Report on Proposals Copyright, NFPA NFPA 54

Transcription

1 Alternates Report of the Committee on National Fuel Gas Code Mike Gorham, Chair Northwest Gas Company, MN [U] Rep. National Propane Gas Association Paul W. Cabot, Secretary (Nonvoting) American Gas Association, DC James P. Brewer, Magic Sweep Corporation, VA [IM] Rep. National Chimney Sweep Guild Duane W. Brown, Ranger Insurance Company, TX [I] William H. Bruno, Brunoʼs Enterprises, MO [SE] Thomas E. Buchal,, Intertek Testing Services NA, Inc., NY [RT] Allen J. Callahan, CSA America, Inc., OH [RT] Bob Cave, American Public Gas Association, VA [U] Sharon E. Coates, State of Arkansas, AR [E] Rep. International Fire Marshals Association Tim Collings, City of Salt Lake City, UT [E] Rep. International Association of Plumbing & Mechanical Officials Thomas R. Crane, Crane Engineering and Forensic Services, MN [SE] John P. Doucette, Connecticut Department of Public Safety, CT [E] Glen Edgar, Selkirk Metalbestos, Inc., OH [M] Rep. Gas Appliance Manufacturers Association, Inc. Alberto Jose Fossa, MDJ Consultores Associados S/C Ltda, Brasil [SE] Rep. NFPA Latin American Section Richard L. Gilbert, Railroad Commission of Texas, TX [E] Wilbur L. Haag, Jr., A.O. Smith Water Products Company, SC [M] Rep. Gas Appliance Manufacturers Association Inc. Steen Hagensen, EXHAUSTO, Inc., GA [M] Patricio J. Himes, Sistemas de Energia, Mexico, [U] Rep. Asociacion Mexicana de Distribuidores de Gas Russel Iwan, Metropolitan Utilities District, NE [IM] Rep. American Gas Association Michael T. Kobel, Intʼl Assn. of Plumbing & Mechanical Officials, CA [E] Brian C. Olson, US Department of the Interior, CO [U] Kenneth P. Padgett, Piedmont Natural Gas Company/ICC, SC [E] Rep. Southern Building Code Congress Intʼl Inc./International Code Council, Inc. Windell F. Peters, AGL Resources Inc., GA [IM] Rep. American Gas Association Dale L. Powell, Copper Development Association, PA [M] Phillip H. Ribbs, City of San Jose, CA [E] Rep. International Association of Plumbing & Mechanical Officials David W. Rock, City of Portland, OR [E] Rep. Oregon Mechanical Officials Association Issac P. Sargunam, Maytag Corporation, IA [M] Rep. Association of Home Appliance Manufacturers Gregory L. Seitz, New Jersey Natural Gas Company, NJ [IM] Rep. American Gas Association Hall Virgil, Carrier Corporation, IN [M] Rep. Gas Appliance Manufacturers Association Inc. Richard E. White, South Bend, IN [U] Rep. National Association of Plumbing Heating Cooling Contractors Robert Wozniak, Underwriters Laboratories Inc., NY [RT] Edward Angelone, KeySpan Energy Delivery, NY [IM] (Alt. to Gregory L. Seitz) Paul E. Beach, Emerson Electric Company, OH [M] (Alt. to Wilbur L. Haag) C. John Beck, Pacific Gas and Electric Company, CA [IM] (Alt. to Windell F. Peters) C. Royal Edwards, National Chimney Sweep Guild, FL [IM] (Alt. to James P. Brewer) Jacob H. Hall, Rheem Manufacturing Company, AL [M] (Alt. to Hall Virgil) John M. Halliwill, International Association of Plumbing & Mechanical Officials, CA [E] (Alt. to Michael T. Kobel) Gregory S. Koll, Metropolitan Utilities District, NE [IM] (Alt. to Russel Iwan) Blaine R. Lanning, CSA International, OH [RT] (Alt. to Allen J. Callahan) Stephen L. Pitner, Railroad Commission of Texas, TX [E] (Alt. to W. Richard L. Gilbert) Hari Ramanathan, International Association of Plumbing & Mechanical Officials, CA [E] (Alt. to Phillip H. Ribbs) Bruce J. Swiecicki, National Propane Gas Association, IL [IM] (Alt. to Mike Gorham) John R. Wiggins, Underwriters Laboratories Inc., NC [RT] (Alt. to Robert Wozniak) Staff Liaison: Theodore C. Lemoff Committee Scope: This Committee shall have primary responsibility for documents on safety code for gas piping systems on consumersʼ premises and the installation of gas utilization equipment and accessories for use with fuel gases such as natural gas, manufactured gas, liquefied petroleum gas in the vapor phase, liquefied petroleum gas-air mixtures, or mixtures of these gases, including: a. The design, fabrication, installation, testing, operation, and maintenance of gas piping systems from the point of delivery to the connections with each gas utilization device. Piping systems covered by this Code are limited to a maximum operating pressure of 125 psig. For purposes of this Code, the point of delivery is defined as the outlet of the meter set assembly, or the outlet of the service regulator or service shutoff valve where no meter is provided. b. The installation of gas utilization equipment, related accessories, and their ventilation and venting systems. This list represents the membership at the time the Committee was balloted on the text of this edition. Since that time, changes in the membership may have occurred. A key to classifications is found at the front of this book. The Report of the Technical Committee on National Fuel Gas Code is presented for adoption. This Report was prepared by the Technical Committee on National Fuel Gas Code and proposes for adoption, amendments to NFPA 54, National Fuel Gas Code, 2002 edition. NFPA 54 is published in Volume 9 of the 200 National Fire Codes and in separate pamphlet form. This Report has been submitted to letter ballot of the Technical Committee on National Fuel Gas Code, which consists of 0 voting members. The results of the balloting, after circulation of any negative votes, can be found in the report. 54-1

2 ..101 Food Service Equipment Appliance, Gas Steam Generator. A separate Note: To assist in review and comment, a preprint of NFPA 54 is available appliance primarily intended to supply steam for use with food service and downloadable from the NFPA website at It is also in equipment appliances. CD ROM and print versions available from NFPA upon request by calling..102 Furnace, Central. A self-contained, gas-burning appliance for heating Customer Service at Gas Utilization Equipment. Any device that utilizes gas as a fuel or 54-1 Log# 119 NFG-AAA Final Action: Reject raw material or both. (Entire Document)..112 Gas Vent. A passageway... for conveying vent gases from gas Submitter : Karin Rountree, Ampco Safety Tools Recommendation: Anywhere ignition sources are a concern, please include as a requirement: Non-Sparking Tools are required where hazardous, combustible or flammable gases, liquids, dusts, or residues are present. Substantiation: Ordinary hand tools are usually made of steel and if struck, scraped, or dropped, can cause sparks which can be disastrous in an explosive environment. Non-Sparking Tools eliminate this hazard, however, standards regarding their application are incomplete, inconsistent and in some cases inaccurate. We feel prevention is one of the most effective means of ensuring safety. If we can prevent an accident and save someoneʼs life and business, if we can implement standards and codes to educate and inform before an accident happens, then we should make the necessary standards and codes to solve the problem. The standards are recommended practices developed by NFPA are designed to improve overall safety and protection of property and personnel. Implementing a Non-Sparking Tools requirement wherever an ignition source is concern would reduce the risk of fire and explosion where hazardous conditions are present. Non-Sparking Tools are recommended by Safety Engineers and Insurance Companies and meet OSHA and EPA requirements where hazardous, combustible or flammable gases, liquids, dusts and residues are present. Non- Sparking Tools should be used when storing, processing, handling hazardous materials as well as maintenance and repair operations within hazardous environments. All it takes is just one spark to cause an explosion. Committee Meeting Action: Reject Committee Statement: Specific text is not provided as required. appliances or their vent connectors to the outside atmosphere...11 Gas Vent, Special Type. Gas vents for venting listed Category II, III, and IV gas appliances Gas Vent, Type B. A vent for venting listed gas appliances with draft hoods and other Category I gas appliances listed for use with Type B gas vents Gas Vent, Type B-W. A vent for venting listed gas-fired vented wall furnaces Heat Pump, Gas-Fired. A n gas-burning, automatically operated appliance Household Cooking Gas Appliance. A n gas appliance for Household Cooking Gas Appliance, Built-In Unit Household Cooking Gas Appliance, Broiler...10 Industrial Air Heaters, Direct Gas-Fired Non-Recirculating. A heater in which all the products of combustion generated by the gas-burning device appliance are released into the Industrial Air Heaters, Direct Gas-Fired Recirculating. A heater in which all the products of combustion generated by the gas-burning device appliance are released into the Kettle, Gas-Fired. See Food Service Equipment, Gas-Fired Kettle..16 Labeled. Appliances, e E quipment, piping, accessories, or materials or vent components to which has been attached a label, symbol or other identifying mark of an organization that is acceptable to the authority having jurisdiction and concerned with product evaluation, that maintains periodic inspection of production of labeled appliances, equipment, piping, accessories, or materials or vent components and by whose labeling the manufacturer indicates compliance with appropriate standards or performance in a specified manner...18 Leak Check. An operation performed on a complete gas piping system and connected appliances and equipment to verify that the system does not leak...140* Listed. Appliances, e E quipment, piping, accessories, materials, 54-2 Log# CP1 NFG-AAA Final Action: Accept vent components or services included in a list published by an organization (Chapters 1, and 4) acceptable to the authority having jurisdiction and concerned with evaluation of Submitter : Technical Committee on National Fuel Gas Code Recommendation: This code is a safety code that shall apply to the installation of fuel gas piping systems, appliances, fuel gas utilization equipment, and related accessories as shown in (A) through (D): (A) Coverage of piping systems shall extend from the point of delivery to the appliance connections with each gas utilization device. (D) Requirements for appliances, gas utilization equipment and related accessories shall include installation, combustion, and ventilation air and venting This code shall not apply to the following items (reference standards for some of which appear in Annex L): (1) Portable LP-Gas appliances and equipment of all types that are not connected to a fixed fuel piping system. (2) Installation of farm appliances and equipment such as brooders, dehydrators, dryers, and irrigation equipment...5 Air Conditioner, Gas-Fired. A n gas-burning, automatically operated appliance for supplying cooled and/or dehumidified air or chilled liquid...17* Authority Having Jurisdiction (AHJ). The organization, office or individual responsible for approving appliances, equipment, materials, an installation, or a procedure...27 Boiler, Low-Pressure. A self-contained gas-burning appliance for supplying steam or hot water...4 Clothes Dryer. A n device appliance used to dry wet laundry by means of heat derived from the combustion of fuel gases...56 Controls. Devices designed to regulate the gas, air, water, or electrical supply to a n gas appliance. These may be manual or automatic...66 Direct Gas-Fired Industrial Air Heater. A heater in which all of the products of combustion generated by the gas-burning device appliance are released..70 Draft. A pressure difference that causes gases or air to flow through a chimney, vent, flue, or fuel burning equipment appliance...79 Equipment. See Appliance Devices other than appliances...95 Food Service Equipment Appliance, Gas Counter Appliance. An appliance such as a gas coffee brewer and coffee urn and any appurtenant water heating equipment appliance, food and dish warmer, hot plate, and griddle...96 Food Service Equipment Appliance, Gas Deep Fat Fryer...97 Food Service Equipment Appliance, Gas-Fired Kettle...98 Food Service Equipment Appliance, Gas Oven, Baking and Roasting...99 Food Service Equipment Appliance, Gas Range Food Service Equipment Appliance, Gas Steam Cooker. A n gas appliance that cooks, defrosts, or reconstitutes food by direct contact with steam. products or services, that maintains periodic inspection of production of listed appliances, equipment, piping, accessories or materials, vent components or periodic evaluation of services, and whose listing states either that the appliances, equipment, piping, accessories, material, vent components or service meets appropriate designated standards or has been tested and found suitable for a specified manner Outdoor Cooking Gas Appliance. As used in this code, a postmounted, fuel-gas burning outdoor cooking appliance for Oven, Gas Baking and Roasting. See Food Service Equipment Appliance, Gas Oven..175 Qualified Agency. Any individual, firm, corporation, or company that either in person or through a representative is engaged in and is responsible for (a) the installation, testing, or replacement of gas piping or (b) the connection, installation, testing, repair, or servicing of appliances and equipment; that is Refrigerator (Using Gas Fuel). A n fuel-gas-burning appliance that is designed to extract heat from a suitable chamber Regulator, Gas Appliance. A pressure regulator for controlling pressure to the appliance manifold of gas equipment Regulator, Line Gas. A pressure regulator placed in a gas line between the service regulator and the gas appliance regulator Regulator, Pressure. A device Equipment placed in a gas line for reducing, controlling, and maintaining the pressure in that portion of the piping system downstream of the device equipment Room Large in Comparison with Size of Equipment Appliance Sources of Ignition. Devices or Appliances or equipment that, Unit Heater, High-Static Pressure. A self-contained, automatically controlled, vented, fuel-gas-burning appliance having Valve, Equipment Appliance Shutoff. A valve located in the piping system, used to shut off individual appliance or equipment...22 Vent. A passageway used to convey flue gases from gas utilization equipment appliances or their vent connectors to the outside atmosphere Vent Damper Device, Automatic. A device... individual automatically operated fuel-gas-burning appliance and that is Vent Gases. Products of combustion from fuel-gas-burning appliances plus * Venting System. A continuous open passageway from the flue collar or draft hood of a n gas-burning appliance to the Qualified Agency. Installation, testing, and replacement of gas piping, gas utilization equipment appliances, or accessories, and... Substantiation: Editorial, consistent terminology usage. Editorial changes to Chapters 1 through 4. Also see (Log #CP18), (Log #CP19), (Log #CP140), and (Log #CP141) for remaining revisions to chapters. 54-2

3 The National Fuel Gas Code is sometimes inconsistent in the use of such terms as gas utilization equipment, equipment, appliance, gas-burning 54-7 Log# 8 NFG-AAA Final Action: Reject devices, gas-fired appliances, etc. The use of similar terms to describe gas (..7) consuming, and in some cases, non-consuming devices, and their inconsistent use in the code may confuse the code user as to which provisions apply. The main goal of this draft is to separate appliances that consume gas from equipment and systems used in gas delivery, venting, etc. and thereby improve the codeʼs precision. Committee Meeting Action: Accept Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..7 Air Shutter. An adjustable device for varying the size of the primary air inlet(s). An air damper used to control the size of air intake or exhaust openings. Substantiation: The current definition is too narrow, the use of primary air inlet suggests a burner application only, and adjustable suggests a manual, preset application. Committee Meeting Action: Reject 54- Log# CP17 NFG-AAA Final Action: Accept Committee Statement: This term is used only in Annex H. The definition is ( (20) (New) ) appropriate for the use in Annex H. Submitter : Technical Committee on National Fuel Gas Code Recommendation: (20) Construction of appliances. Substantiation: Revise the scope to clarify that the requirements of the code 54-8 Log# 9 NFG-AAA Final Action: Reject do not apply to the internal components of appliances. (..11) Committee Meeting Action: Accept Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..11 Appliance Categorized Vent Diameter/Area. The minimum vent diameter/ area/ diameter permissible required for a Category 54-4 Log# 6 NFG-AAA Final Action: Reject I appliances appliance to maintain a nonpositive vent static pressure when (1.4) tested in accordance with nationally recognized standards. Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation: 1.4 Equivalency. The provisions of this code are not intended to prevent the use of any material, method of construction, or installation procedure not specifically prescribed prohibited by this code, provided any such alternate is acceptable to the authority having jurisdiction [see..17]. The authority having jurisdiction shall require that sufficient evidence be submitted to substantiate any claims made regarding the safety of such alternates. Substantiation: This surely is what is intended by this section. It is tempting Substantiation: To make diameter/area conform to the order of these words in the title, and to improve the wording of the definition. Secretary Note: Suggested correction of diameter/area applies to NFPA version. Committee Meeting Action: Reject Committee Statement: The proposal would be a significant change which is not substantiated. to use proscribed here but that will invite the same mistake in another 54-9 Log# 40 NFG-AAA Final Action: Accept edition. (..16) Committee Meeting Action: Reject Committee Statement: The current wording is correct since the code intent is to permit the use of materials and equipment that the code does not prescribe. To make a change could cause confusion where the committee is not aware any exists. Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..16 Atmospheric Pressure. The pressure of the weight of air and water vapor on the surface of the earth, approximately 14.7 pounds/ square inch (psia) (101 kpa absolute) at sea level. Substantiation: This is redundant -- water vapor is a component of air. Committee Meeting Action: Accept 54-5 Log# 7 NFG-AAA Final Action: Reject (..4) Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep Log# 41 NFG-AAA Final Action: Accept in Principle National Association of Plumbing-Heating-Cooling Contractors (..25) Recommendation:..4 Air, Circulating. Air for cooling, heating, or ventilation distributed to habitable spaces. See Circulating Air. Substantiation: To better position the definition. Committee Meeting Action: Reject Committee Statement: Refer to Committee Action on 54-6 (Log #44). The committee will review the style of the definitions, and may make style changes. Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..25 Boiler, Hot Water Heating, Low Pressure. A boiler in which no steam is generated, from which hot water is circulated for heating purposes and then returned to the boiler, and that operates at water pressures not exceeding 160 psi (1100 kpa) and at water temperatures not exceeding 250 F (121 C) at or near the boiler outlet. Substantiation: The definition is for a low pressure hot water heating boiler, and the title should say so Log# 44 NFG-AAA Final Action: Accept in Principle in Part Committee Meeting Action: Accept in Principle (..4) Committee Statement: Refer to Committee Action on (Log #). Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..4 Air, Circulating. Air for cooling, heating, or ventilation distributed to habitable spaces Log# NFG-AAA Final Action: Accept in Principle..4 Circulating Air. The air that flows through a heating (or cooling) unit (..25,..26,..27,..28) and then into the space to be heated (or cooled). Substantiation: To put the term circulating air in a more logical place, and improve the definition. Committee Meeting Action: Accept in Principle in Part The definition will not be changed. The definition will be reorganized to eliminate commas and reordered and provide headings as appropriate. Committee Statement: The committee believes that the current definition is adequate. Submitter : Wilbur L. Haag, Jr., A.O. Smith Water Products Company Recommendation:..25 Boiler, Hot Water Heating Boiler. A boiler in which no steam is generated, from which hot water is circulated for heating purposes and then returned to the boiler, and that operates at water pressures not exceeding 160 psi (1100 kpa) and at water temperatures not exceeding 250 F (121 C) at or near the boiler outlet designed to heat water for circulation through an external space heating system...26 Boiler, Hot Water Supply. A boiler, completely filled with water, which furnishes hot water to be used externally to itself, and that operates at water pressures not exceeding 160 psi (1100 kpa) and at water temperatures not exceeding 250 F (121 C) at or near the boiler outlet used to heat water for 54-

4 purposes other than space heating...27 Boiler, Low-Pressure. A self-contained gas-burning appliance for supplying steam or hot water Steam Heating. A boiler designed to convert water into steam which is supplied to an external space heating system...28 Boiler, Steam Heating. A boiler in which steam is generated and that operates at a steam pressure not exceeding 15 psi (100 kpa) Low-Pressure. A boiler that supplies steam at a pressure not exceeding 15 psi (100 kpa), or hot water at a pressure not exceeding 160 psi (1100 kpa) at a temperature not exceeding 250 o F (121 o C). Substantiation: There is no explanation of what low pressure means in the present definition for Boiler, Low-Pressure. This proposal corrects that by using language for the four definitions exactly as in the Z21.1/CSA 4.9 Standard. Committee Meeting Action: Accept in Principle 1. Accept the proposed definitions of Hot Water Heating Boiler, Hot Water Supply Boiler, and Low Pressure Boiler 2. Revise the definition of Steam Boiler to read: Steam Boiler. A boiler designed to convert water into steam which is supplied to an external system. Committee Statement: The proposed definitions are accepted, and the definition of Boiler is modified by changing the term to Steam Boiler and deleting of the word space which could be interpreted to limit its use. or draft hood of a gas-burning appliance to the outside atmosphere outdoors for the purpose of removing flue or vent gases Plastic Pipe, Tubing, and Fittings. Plastic pipe, tubing, and fittings shall be used outside outdoors underground only and shall conform with ASTM D 251, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings. Pipe to be used shall be marked gas and ASTM D Plastic Piping, Joints, and Fittings An independent vent to the outside exterior of the building, sized in accordance with the regulator manufacturerʼs instructions, shall be provided where the location of a regulator is such that a ruptured diaphragm will cause a hazard. Where there is more than one regulator at a location, each regulator shall have a separate vent to the outside outdoors, or if approved Vents. The discharge stacks, vents, or outlet parts of all pressure relieving and pressure limiting devices shall be located so that gas is safely discharged in to the outside atmosphere outdoors Piping Underground Beneath Buildings.. The conduit shall extend at least 4 in. (100 mm) outside the building, be vented outdoors above grade to the outside, and be installed so as to prevent the entrance of water and insects Connection of Plastic Piping. Plastic pipe shall be installed outside outdoors, underground only Connections between Metallic and Plastic Pipe. Connections made outside outdoor and underground between metallic and plastic piping shall be made only with ASTM D 251, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings, Category I transition fittings Where passing through an outside exterior wall, the piping shall also be protected against corrosion by coating or wrapping with an inert material Log# 42 NFG-AAA Final Action: Accept in Principle approved for such applications. (..27) Repair Garages.... Air for combustion purposes shall be obtained from Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors outside the outdoors building Bleed Lines for Diaphragm-Type Valves. Bleed lines shall comply with the following requirements: Recommendation:..27 Boiler, Low-Pressure. A self-contained gas-burning (1) Diaphragm-type valves shall be equipped to convey bleed gas to the appliance for supplying steam or hot water. Substantiation: The purpose of this definition is accomplished by fixing..25 and..28. In addition, the definition, as stated, is incorrect. Committee Meeting Action: Accept in Principle Committee Statement: Refer to Committee Action on (Log #). outside atmosphere outdoors or into the combustion chamber adjacent to a continuous pilot Exhausting to the Outdoors. Type 1 and Type 2 clothes dryers shall be exhausted to the outside air outdoors Air Supply. Where outside outdoor air dampers or closing louvers are used, they shall be verified to be in the open position prior to main burner operation Air Supply. Where outside outdoor air dampers or closing louvers are used, they shall be verified to be in the open position prior to main burner 54-1 Log# 4 NFG-AAA Final Action: Accept in Principle operation. (..28) Direct-vent wall furnaces shall be installed with the vent-air intake Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..28 Boiler, Steam Heating, Low Pressure. A boiler in which steam is generated and that operates at a steam pressure not exceeding 15 psi (100 kpa). Substantiation: To make the title consistent with the definition. Committee Meeting Action: Accept in Principle Committee Statement: Refer to Committee Action on (Log #). terminal in the outside atmosphere outdoors Equipment Not Required to be Vented. Where any or all of this equipment in (5) through (11) is installed so the aggregate input rating exceeds 20 Btu/hr/ft (207 W/m) of room or space in which it is installed, one or more shall be provided with venting systems or other approved means for removing conveying the vent gases to the outside atmosphere outdoors so the aggregate input rating of the remaining unvented equipment does not exceed the 20 Btu/hr/ft (207 W/m) Minimum Safe Performance. A venting system shall be designed and constructed so as to develop a positive flow adequate to remove convey flue or vent gases to the outside atmosphere outdoors. Substantiation: Editorial, consistent terminology. Replace the word outside as it relates to air from the outdoors or outdoor atmosphere with the preferred Log# CP125 NFG-AAA Final Action: Accept term outdoor. Also replace remove with convey and outside wall with (..9, various other sections) ʻexterior wall. Submitter : Technical Committee on National Fuel Gas Code Recommendation:..9 Chimney. [See also Gas Vent, Vent, and Venting System.] One or more passageways, vertical or nearly so, for conveying flue or vent gases to the outside atmosphere outdoors. Committee Meeting Action: Accept..66 Direct Gas-Fired Industrial Air Heater. A heater in which all of the Log# CP11 NFG-AAA Final Action: Accept products of combustion generated by the gas-burning device are released into the air stream being heated; whose purpose is to offset the building heat loss by heating incoming outside outdoor air, inside air or a combination of both...67 Direct Gas-Fired Make-Up Air Heater. A heater in which all the products of combustion generated by the fuel-gas burning device are released into the outside outdoor air stream being heated...68 Direct Vent Appliances. Appliances that are constructed and installed so that all air for combustion is derived directly from the outside atmosphere outdoors and all flue gases are discharged to the outside atmosphere outdoors...92 Flue, Chimney. The passage(s) in a chimney for conveying the flue or vent gases to the outside atmosphere outdoors...10 Furnace, Enclosed. A specific heating, or heating and ventilating, furnace incorporating an integral total enclosure and using only outside outdoor air for combustion Gas Vent. A passageway composed of listed factory-built components assembled in accordance with the terms of listing for conveying vent gases (..44 Clothes Dryer Type 1,..45 Clothes Dryer Type 2) Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise text to read as follows:..44 Clothes Dryer, Type 1. Factory-built package, multiply produced. Primarily used in family living environment. May or may not be coin-operated for public use...45 Clothes Dryer, Type 2. Factory-built package, multiply produced. Used in business with direct intercourse of the function with the public. May or may not be operated by public or hired attendant. May or may not be coin-operated. Substantiation: To clarify the definitions. Committee Meeting Action: Accept from gas appliances or their vent connectors to the outside atmosphere Log# 45 NFG-AAA Final Action: Accept in Principle outdoors. (..66)..22 Vent. A passageway used to convey flue gases from gas utilization equipment or their vent connectors to the outside atmosphere outdoors...26* Venting System. A continuous open passageway from the flue collar Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors 54-4

5 Recommendation:..66 Direct Gas-Fired Industrial Air Heater. A heater in which all of the products of combustion generated by the gas-burning device are released into the air stream being heated ; whose purpose is to offset the building heat loss by heating incoming outside air, inside air or a combination of both. Substantiation: The struck out material is not a definition -- it is an explanation! Committee Meeting Action: Accept in Principle..66 Direct Gas-Fired Industrial Air Heater, Recirculating. A n air recirculating heater in which all of the products of combustion generated by the gas-burning device are released into the air stream being heated. Committee Statement: The revised definition is accepted with an editorial revision. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..78 Effective Ground-Fault Current Path. An intentionally constructed, permanent, low impedance electrically conductive path designed and intended to carry underground electric fault current conditions from the point of a ground fault on a wiring system to the electrical supply source. Substantiation: Change uses proper electrical terms. Committee Meeting Action: Accept Ballot Results: Affirmative: 22 Negative: Explanation of Negative: SWIECICKI: I agree with Mr. Wozniakʼs proposed revision. VIRGIL: I agree with Robert Wozniakʼs reason for voting negative. WOZNIAK: The original definition was much like that which appeared in the National Electrical Code (NEC), but due to a typographical error, the wording was altered. Also, one word was missing, which made the error appear to be Log# 46 NFG-AAA Final Action: Accept in Principle grammatically correct. The definition should read, Effective Ground-Fault (..67) Current Path. An intentionally constructed, permanent, low impedance Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..67 Direct Gas-Fired Make-Up Air Heater. A heater in which all the products of combustion generated by the fuel-gas burning device are released into the flow of air that is passing through the heater outside air stream being heated. Substantiation: The proposed change is more readily understandable. Committee Meeting Action: Accept in Principle..67 Direct Gas-Fired Non-Recirculating Industrial Air Heater. A nonrecirculating electrically conductive path designed and intended to carry current underground under ground- fault conditions from the point of a ground fault on a wiring system to the electrical supply source. This revision is now identical to the definition of paragraph in the 2002 edition of the NEC. Comment on Affirmative WHITE: The definition should be identical with the NEC provision However, his printed version deletes underground which I am sure he does not mean. The present reading in our book is underground, as in below the surface of the earth. In my zeal, I deleted the underground, but I did not check the NEC like I should have. industrial air heater in which all the products of combustion generated by the fuel-gas burning device are released into the air stream being heated. Committee Statement: The proposed definition is accepted with an editorial Log# 50 NFG-AAA Final Action: Reject revision, and the title is changed to match the revised title of the standard to (..84) which these products are listed. Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..84 FAN Max. The maximum capacity in Btu/Hour of a vent or connector serving i nput rating of a Category I, fan-assisted appliance Log# 47 NFG-AAA Final Action: Reject attached to a vent or connector. (..72) Substantiation: The rating is the vent rating, not the appliance rating. Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..72 Draft, Natural. Draft produced by the difference in the weight of a column of flue gases within a chimney or vent and a corresponding column of air of equal dimension outside the chimney or vent. [211: ] See Natural Draft. Committee Meeting Action: Reject Committee Statement: The term FAN Max is correctly defined, as used in the venting tables Natural Draft. A negative pressure in a chimney or vent that results Log# 51 NFG-AAA Final Action: Reject from difference in density of the gases in the chimney or vent and the air in the (..85) ambient atmosphere, or from venturi effects of the wind blowing across the top of the chimney or vent. Substantiation: More likely place to search for the definition of Natural Draft. To provide an improved definition of a term presently found in..72. Committee Meeting Action: Reject Committee Statement: The proposed definition does not significantly improve the definition, and the committee notes that the current definition is extracted from NFPA 211. Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..85 FAN Min. The minimum input in Btu/hour rating of a Category I, fan-assisted appliance attached to a vent or connector for satisfactory operation of the vent or connector. Substantiation: The rating is for satisfactory operation of the vent. Committee Meeting Action: Reject Committee Statement: The term FAN Min is correctly defined, as used in the venting tables Log# 48 NFG-AAA Final Action: Reject (..74) 54-2 Log# 52 NFG-AAA Final Action: Reject Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. (..86) National Association of Plumbing-Heating-Cooling Contractors Recommendation:..74 Draft Regulator. A device that functions to maintain a desired draft in at or near the appliance outlet by automatically varying the amount of dilution air entering the vent reducing to reduce excessive draft the draft to the desired value. Substantiation: This change makes clear that the regulator regulates excessive draft only, and the method is by short-circuiting the excess draft near the appliance outlet with additional dilution air. Committee Meeting Action: Reject Committee Statement: The change would make the definition unnecessarily restrictive. Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..86 FAN+FAN. The maximum combined appliance input rating of capacity in Btu/Hour of a vent or connector serving two or more Category I, fan-assisted appliances attached to the common vent. Substantiation: The rating is the vent rating, not the appliance rating. Committee Meeting Action: Reject Committee Statement: The term FAN + FAN is correctly defined, as used in the venting tables Log# 5 NFG-AAA Final Action: Reject Log# 49 NFG-AAA Final Action: Accept (..87) (..78) Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors 54-5

6 Recommendation:..87 FAN+NAT. The maximum combined appliance input rating of capacity in Btu/Hour of a vent or connector serving one or more Category I, fan-assisted appliances and one or more Category I, draft hood-equipped appliances attached to the common vent Log# 58 NFG-AAA Final Action: Accept in Principle Substantiation: The rating is the vent rating, not the appliance rating. (..152) Committee Meeting Action: Reject Committee Statement: The term FAN + NAT is correctly defined, as used in the venting tables. Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..152 Nondisplaceable Valve Member. A nondisplaceable valve member that cannot be moved from its seat by a force applied to the handle, or force applied by a plane surface to any exterior portion of the valve Log# 55 NFG-AAA Final Action: Reject Substantiation: Circular definition as presently shown. (..129) Committee Meeting Action: Accept in Principle Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..129 Hybrid Pressure System. A piping system in which the pressure at the point of delivery is reduced by one or more line pressure regulators prior to the appliance connec-tion. Substantiation: Delete this unless staff has found that we use it somewhere!(?)..152 Nondisplaceable Valve Member. A nondisplaceable valve member that cannot be moved from its seat by a force applied to the handle, or force applied by a plane surface to any exterior portion of the valve. Committee Statement: Accepted and unneeded text is also deleted. Committee Meeting Action: Reject 54-1 Log# 59 NFG-AAA Final Action: Reject Committee Statement: The term is used in and the definition. (..157) Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..157 Outdoor Cooking Gas Appliance. As used in this Log# CP112 NFG-AAA Final Action: Accept code, a post-mounted, fuel-gas burning outdoor cooking appliance for (..10,..11) installation directly on and attachment attached to a post provided as a part of Submitter : Technical Committee on National Fuel Gas Code Recommendation: Delete..10 and..11. Substantiation: Duplicate definitions are deleted, see..66 and..67 Committee Meeting Action: Accept the appliance by the manufacturer. Substantiation: As presently offered, it is not quite the correct word. Committee Meeting Action: Reject Committee Statement: The definition is revised in 54-2 (Log #CP114) Log# CP114 NFG-AAA Final Action: Accept Log# 54 NFG-AAA Final Action: Accept in Principle (..157) (..11) Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..11 Industrial Air Heaters, Direct Gas-Fired Recirculating. A heater in which all the products of combustion generated by the gas-burning device are released into the air stream being heated to compensate for building heat loss by heating incoming outdoor air, and, if applicable, inside air. See..66 Substantiation: To avoid defining the same thing in two places. Committee Meeting Action: Accept in Principle Committee Statement: The definition is deleted in (Log #CP112). Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise..157 to read:..157 Outdoor Cooking Gas Appliance. As used in this code, a post-mounted, fuel-gas burning outdoor cooking appliance for installation directly on and attachment to a post provided as a part of the appliance by the manufacturer. A gas-fired cooking appliance for outdoor use only that is provided with a means of support by the manufacturer and is connected to a fixed gas piping system. Substantiation: The definition is revised to reflect outdoor cooking products currently available. Committee Meeting Action: Accept 54- Log# 60 NFG-AAA Final Action: Accept in Principle Log# 56 NFG-AAA Final Action: Accept (..165) (..14) Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..14 Joint. A connection between two lengths of pipe or between a length of pipe and a fitting. Substantiation: The definition given is not different from the dictionary meaning of the word joint. Committee Meeting Action: Accept Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..165 Piping. As used in this code, either pipe, tubing, or both. See Pipe, Tubing..205 Tubing. Substantiation: There is no entry for Pipe, Tubing Committee Meeting Action: Accept in Principle..165 Piping. As used in this code, either pipe, tubing, or both. See Pipe, Tubing..16 Pipe,..205 Tubing. Committee Statement: The definition section numbers are added to clarify Log# 57 NFG-AAA Final Action: Accept (..145) 54-4 Log# 61 NFG-AAA Final Action: Reject (..170) Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..145 Mechanical Exhaust System. Equipment installed in and made a part of the vent, which will provide a positive induced draft assure a satisfactory flow of gases through the vent. Substantiation: A positive induced draft is an oxymoron. Committee Meeting Action: Accept Revise..145 to read:..145 Mechanical Exhaust System. Equipment installed in and made a part of the vent, to provide the required flow of gases through the vent. Committee Statement: Accepted with an editorial revision. Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..170 Pressure Drop. The loss in pressure of a fluid flowing in a piping system due to friction or obstruction in pipes, valves, fittings, regulators, and burners t he piping system. Substantiation: Pressure drop requires that the fluid be flowing. Also, piping system encompasses all the specified items. Committee Meeting Action: Reject Committee Statement: The definition is clear. 54-6

7 protective equipment and appropriate training is required to protect against injury and environmental mishaps. This can include, but is not limited to: PCBs 54-5 Log# 62 NFG-AAA Final Action: Reject in oily substances, asbestos in gaskets, elemental mercury in vent lines and (..174) some types of pressure reducing regulators or meters. Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..174 Purge. To free a gas conduit of air or gas, or a mixture of gas and air replace the contents of a gas conduit by the vigorous introduction of an appropriate replacement fluid. Substantiation: To establish the concept that purging must be rapid or vigorous, and to avoid the idea that purging is only to replace fuel gas -- it may also be required to replace air in a piping system. Committee Meeting Action: Reject Committee Statement: The proposed changes are not needed. The proposed language adds terms that are too subjective. Substantiation: Environmental issues are not addressed in the Code. For a national code to completely disregard environmental issues that contractors, utilities, and homeowners encounter is unethical, maybe criminal. The Code should not set environmental policy, but it should at least warn or bring it to the userʼs attention. Committee Meeting Action: Reject Committee Statement: Requirements of the type proposed are not appropriate for this Code. They are covered elsewhere, i.e., OSHA Log# 64 NFG-AAA Final Action: Reject (4.4 (New) ) Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep Log# CP127 NFG-AAA Final Action: Accept National Association of Plumbing-Heating-Cooling Contractors (..205) Recommendation: 4.4 Operational Test of Completed Systems. When gas Submitter : Technical Committee on National Fuel Gas Code Recommendation:..205 Tubing. Semirigid conduit of copper, steel, aluminum, CSST or plastic. Substantiation: The clarify that CSST is included under the definition for tubing. Committee Meeting Action: Accept supply is available at the time of substantial completion of the work, the installing agency shall conduct an operational test of the complete system to be sure that the firing rates of appliances are correct, that the devices are venting properly, and that there is no undue vent products spillage. Substantiation: This proposal springs from a consulting inquiry that came to me. A contractor installed gas piping and some appliances in a residence in a rural location where natural gas was not available. Besides the appliances he installed, he also piped up other products that were supplied by the general contractor or the owner. The contractor also relocated some appliances from the ownerʼs original home and converted them to use LPG! Some of the new units were set up for natural gas and plainly labeled as such, but they were not 54-7 Log# 6 NFG-AAA Final Action: Accept modified for LPG. After a short time of using these devices, various parts of (..28) the new house were significantly sooted and the contractor refused to cover the Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation:..28 Venting System, Mechanical Draft, Forced. A venting system in which a fan or other mechanical device issued is used to cause the flow of flue or vent gases under positive static vent pressure. Substantiation: To remove an oxymoron, viz., static pressure in a flowing gas. Committee Meeting Action: Accept Committee Statement: Inclusion of the word static can cause confusion. damages! Eventually, the contractor was made to see the light, but only after legal fees (and my minor fee). It seems to me that the concept in this proposal should be in the code -- how it is said and where located, I leave to the panels and total committee. Committee Meeting Action: Reject Committee Statement: The committee agrees that the subject is important, and notes that this subject is covered elsewhere in the Code, i.e., Chapter 11. Ballot Results: Affirmative: 22 Negative: Log# CP18 NFG-AAA Final Action: Accept (Chapters 5, 6 and 7) Explanation of Negative: SWIECICKI: I agree with Mr. Virgilʼs reasons. VIRGIL: I vote negative because static should not be deleted from the definition,..28 Venting System, Mechanical Draft, Forced. A venting system in which a fan or other mechanical device is used to cause the flow of flue or vent gases under positive static vent pressure. The fact that the pressure is static pressure is fundamental to the definition in the same way it is used in the definitions for Vented Appliance, Category III and IV; i.e...22 Vented Appliance, Category III. An appliance that operates with a positive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent.ʼ..2 Vented Appliance, Category IV. An appliance that operates with a positive vent static pressure and with a vent gas temperature that may cause excessive condensate production in the vent. Static pressure is the driving force that causes the flow of flue or vent gases in a forced mechanical draft venting system, just as it causes the flow of air in circulating air ducts. Static pressure is measured at the peripheral holes in a pitot-static tube. See the PRESSURE MEASUREMENT and PITOT-STATIC TUBES sections in the Measurement and Instruments chapter of the ASHRAE Fundamentals Handbook. The word static avoids confusion, rather than causes confusion in this definition in the NFGC. WHITE: I agree to leave the word static in the definition, but it still cries out for some sort of improvement! Submitter : Technical Committee on National Fuel Gas Code Recommendation: Addition to Existing System. When additional gas utilization equipment is appliances are being connected to a gas piping system, the Interconnections for Stand-By Fuels. Where a supplementary gas for stand-by use is connected downstream from a meter or a service regulator where a meter is not provided, a device equipment to prevent backflow shall be installed The volume of... from the manufacturersʼ input ratings of the gas utilization equipment appliances served. Where the input rating is not indicated, the gas supplier, equipment appliance manufacturer, or a qualified agency The total connected hourly load shall be used as the basis for piping sizing, assuming all appliances are equipment is operating at full capacity simultaneously Allowable Pressure Drop. The design pressure loss...of the appliance gas utilization equipment, shall be such that the supply pressure at the appliance equipment is greater than the minimum pressure required for proper appliance equipment operation * General Considerations. Gas piping systems shall... the point of delivery and the appliance gas utilization equipment ()(d) Boiler or mechanical equipment rooms Where Required. A line gas pressure regulator... the branch supply line or gas utilization equipment is appliances are designed to A regulator shall not be vented to the gas equipment appliance flue or exhaust system Gas Appliance Pressure Regulators Where to Install. Protective devices shall be installed as close to the 54-8 Log# 106 NFG-AAA Final Action: Reject utilization equipment as practical where the design of utilization equipment (4 (New) ) connected is... NOTE: This Proposal appeared as Comment (Log # 71) which was held from the A2002 ROC on Proposal 54 -New. Submitter : Gordon (Don) Rogers, Con Edison Recommendation: Add new text to read as follows: X.X.X Notice to Users. When disconnecting existing piping, proper personal 5.11 Low-Pressure Protection. A protective device shall be installed between the meter and the gas utilization equipment appliance if the operation of the equipment appliance is such Design. Piping systems shall be... at points of connections to appliances and equipment and at anchorage or guide points Piping shall be anchored to prevent undue strains on connected 54-7

8 appliances and equipment and shall not be supported by other piping All parts of the supporting equipment system shall be designed and Log# CP12 NFG-AAA Final Action: Accept installed so they will not be disengaged by movement of the supported piping. (5.6..4, 6.2.8) (1) Bends shall be made only with bending equipment tools and procedures intended for that purpose (4) Where the piping manufacturer specifies the use of special bending equipment tools or procedures, such equipment tools or procedures shall be used Each outlet, including a valve shall be closed gastight with a threaded plug or cap immediately after installation and shall be left closed until the gas utilization appliance or equipment is connected thereto. When an appliance or equipment is disconnected... Exception No. 1: Laboratory equipment appliances installed in accordance with 8.5.2(1) shall be permitted Appliance Equipment shutoff valves installed Shutoff Valves for Multiple House Lines. In multiple tenant buildings... accessible from the appliance or equipment location, an Gas piping shall... connected to gas utilization equipment appliances that is are connected to the equipment appliance grounding... that equipment appliance Where the piping system is connected to appliances, or equipment, or equipment components designed for operating pressures of less than the test pressure, such appliances, or equipment or equipment components shall be isolated from the piping system by disconnecting them and capping the outlet(s) Where the piping system is connected to appliances, or equipment, or equipment components designed for operating pressures equal to or greater than the test pressure, such appliances and or equipment shall be isolated from the piping system by closing the individual equipment appliance shutoff valve(s). 7.2 Piping System, Appliance and Equipment Leakage Test Placing Appliances and Equipment in Operation. Gas utilization Appliances and equipment shall not be placed in operation Placing Appliances and Equipment in Operation. After the piping system has been placed in operation, all appliances and equipment... Substantiation: Editorial, consistent terminology use. Editorial changes to Chapter 5 through 7. Also see 54-2 (Log #CP1), (Log #CP19), (Log #CP140), and (Log #CP141) for remaining revisions to chapters. The National Fuel Gas Code is sometimes inconsistent in the use of such terms Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise text to read as follows: Corrugated Stainless Steel. Corrugated stainless steel tubing shall be tested and listed in compliance accordance with the construction, installation, and performance requirements of ANSI LC 1/CSA 6.26, Fuel Gas Piping Systems Using Corrugated Stainless Steel Tubing CSST. CSST piping systems shall be installed in accordance with this code and the manufacturerʼs installation instructions. Substantiation: This code does not contain a requirement that CSST piping be installed in accordance with the manufacturerʼs instructions. Hardened listed nail plates, terminations at portable appliances, detailed sleeve requirements through the sides of fireplaces and fireplace inserts, as well as methods for installation of CSST underground are important requirements found only in the manufacturerʼs installation instructions. Changes to section are made to eliminate the references to installation instructions since chapter 5 is the material chapter. Committee Meeting Action: Accept Ballot Results: Affirmative: 24 Negative: 1 Explanation of Negative: VIRGIL: I vote negative because the proposal for the new Section 6.2.8, should not be added unless it includes the same statements that are being added to 8.5.1(4) by Proposal 54-75a (Log #CP115) (8.5.1(4)) and for the same substantiation. Existing proposal: Corrugated Stainless Steel. Corrugated stainless steel tubing shall be tested and listed in compliance accordance with the construction, installation, and performance requirements of ANSI LC 1/CSA 6.26, Fuel Gas Piping Systems Using Corrugated Stainless Steel Tubing CSST. CSST piping systems shall be installed in accordance with this code and the manufacturerʼs installation instructions. Add the following text to 6.2.8: CSST shall not pass through an appliance housing, cabinet, or casing. CSST shall connect only to appliances that are fixed in place. as gas utilization equipment, equipment, appliance, gas-burning devices, gas-fired appliances, etc. The use of similar terms to describe gas consuming, and in some cases, non-consuming devices, and their inconsistent 54-4 Log# 81 NFG-AAA Final Action: Accept in Principle use in the code may confuse the code user as to which provisions apply. The (5.6.4) main goal of this draft is to separate appliances that consume gas from equipment and systems used in gas delivery, venting, etc. and thereby improve the codeʼs precision. Committee Meeting Action: Accept Submitter : James Ranfone, American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) Committee Recommendation: Plastic Pipe, Tubing, and Fittings. Plastic pipe, tubing, and fittings supplying gas shall be used outside underground only and shall conform with ASTM D 251, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings. Pipe to be used shall be marked gas and ASTM D 251. PVC pipe, tubing and fittings used to vent regulators Log# 109 NFG-AAA Final Action: Reject shall conform to UL 651, Schedule 40 and 80 Rigid PVC Conduit. (5.5.1(4)) Substantiation: Section requires vent materials used in regulator NOTE: This Proposal appeared as Comment (Log # 124 ) which was held from the A2002 ROC on Proposal Submitter : Hall Virgil, Carrier Corporation / Rep. Gas Appliance Manufacturers Association Recommendation: Add new text to read as follows: (4) CSST where installed in accordance with the manufacturerʼs instructions. Installer shall extend rigid metallic pipe 2 inches minimum outside an appliance casing to connect to CSST to prevent chafing of CSST on an edge of the gas connector opening in an appliance casing and to prevent exposure to high temperatures. Substantiation: CSST should not pass through a gas connector opening in an appliance casing because CSST can be damaged by sharp edges of an appliance casing and should not be subjected to high temperatures within an appliance casing. Although many appliances have flame-rollout protection, CSST may not withstand the elevated temperatures within appliance casings that could occur during abnormal operating conditions. Committee Meeting Action: Reject Committee Statement: Refer to Committee Action on 54-75a (Log #CP115). Ballot Results: Affirmative: 24 Abstain: 1 Explanation of Abstention: VIRGIL: I vote abstain because this proposal section number is incorrectly identified because it was held from the A2002 ROC before the sections were renumbered. It should be identified as Section 8.5.1(4). Proposal 54-75a (Log #CP115) (8.5.1(4)) implements this proposal. vent lines to be in accordance with section 5.6. Section 5.6 restrict plastic piping to outdoor, underground usage only. However, while the code appears clear-cut on this issue, it may have been an unintended consequence of a code change several editions back to provide guidance on acceptable vent materials when the code did not have any such requirements. We believe the committee failed to take into account the use of PVC vent lines that do not convey line pressure gas. The revision would allow the use of PVC indoors and outdoors above ground if it meets UL 651. Several utilities continue to use UL 651 PVC for vent line on utility owned regulators that are allowed under DOT regulations. NFPA 58, Liquefied Petroleum Gas Code, also allows it use. Committee Meeting Action: Accept in Principle Revise to read: Plastic Pipe, Tubing, and Fittings Plastic pipe, tubing, and fittings used to supply fuel gas shall be used outside underground only and shall conform with to ASTM D 251, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings. Pipe to be used shall be marked gas and ASTM D Regulator vent piping. Plastic pipe, tubing, and fittings used to connect regulator vents to remote vent terminations shall be PVC conforming to UL 651, Schedule 40 and Schedule 80 rigid PVC conduit. Committee Statement: Accepted with editorial revisions. Ballot Results: Affirmative: 2 Negative: 2 Explanation of Negative: KOBEL: ASTM D 251 is the product standard for the acceptance of plastic fuel gas piping, it is for outside use and underground. The substantiation for the use of UL 651 indicates that a utility acceptance outside the building should allow for its usage in the building. DOT utility rules do not cover usage of these materials in a building. RIBBS: ASTM D 251 is the product standard for the acceptance of plastic fuel gas piping, it is for outside use and underground. The substantiation for the 54-8

9 use of UL 651 indicates that a utility acceptance outside the building should allow for its usage in the building. DOT utility rules do not cover usage of these materials in a building Log# 65 NFG-AAA Final Action: Accept ( (2)) Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation: Anodeless Risers. Anodeless risers shall comply with the following: (2) Service head adapters and field-assembled anodeless risers incorporating service head adapters shall be recommended by the manufacturer for the gas used by the manufacturer and shall be design-certified to meet the requirements of Category I of ASTM D 251, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings, and 49 CFR (e). The manufacturer shall provide the user qualified installation instructions as prescribed by 49 CFR (b). Substantiation: To eliminate repetition. Committee Meeting Action: Accept Log# 17 NFG-AAA Final Action: Reject (5.6.7, Welder, Approved (New), (New)) Submitter : James M. Harper, City of Hastings, Nebraska / Rep. Nebraskaland Conference of Building Officials Recommendation: Metallic Pipe Threads and welds Welds. Welding of joints in a gas supply system shall comply with AWS B2.1 or API 1104 or ASME Boiler and Pressure Vessel Code, Section IX. Welds shall be done by an approved welder. Welder, Approved. An approved welder is a person who can demonstrate experience in the type of work being performed, satisfactory to the code official, and has a certificate or similar document from an approved agency or institution that demonstrates the personʼs ability to meet the requirements of Section IX of the ASME Boiler and Pressure Vessel Code, relating to welder qualifications. Add reference into Chapter 14 ASME Boiler and Pressure Vessel Code, Section IX, 2001 AWS B2.1, Standard Welding Procedure Specification (SWPS), 2002 API 1104, Welding of Pipelines and Related Facilities, 19th Edition, 1999 Substantiation: The National Fuel Gas Code is silent about how to make a welded joint for gas piping systems. The added section provides direction on welded joints. The standards indicated (AWS B2.1, API 1104, ASME Boiler and Pressure Vessel Code) are widely recognized as acceptable standards for making welded joints in gas piping systems. The code change also indicates that an approved welder must fabricate the joints. Gas piping installations are too important not to have a qualified person doing the work and the method of welding specified. As a matter of organization, the specifics of how to make a joint probably should appear in section and expand the title of this chapter. Standards for brazing joints, or making flared joints, eventually should also be under this same section. Committee Meeting Action: Reject Committee Statement: The committee believes that welding specification and welder qualification should be a state or local issue. Gas piping installed under the National Fuel Gas code is well below 20 percent of the specified minimum yield strength. Pipe standards exclude welding qualification for pipelines operating at these low pressures. A includes the requirements for welding Log# 88 NFG-AAA Final Action: Reject ( ) Submitter : Dale Watterson, Madison Gas and Electric Recommendation: * Pipe Joints. Pipe joints shall be threaded, flanged, brazed or welded. Where nonferrous pipe brazed, the brazing materials shall have a melting point in excess of 1000 F (58 C). Brazing alloys shall not contain more than 0.05 percent phosphorus. Brazed joints made in the field by the tee-drill process shall not be permitted. Substantiation: There is no ANSI standard to field made joints. The wall thickness of the copper is reduced. Joint dimension and quality are tool and operator dependent. Brazed joint dimension is critical to joint strength. Committee Meeting Action: Reject Committee Statement: No technical substantiation is provided to support that this process should be prohibited Log# 21 NFG-AAA Final Action: Reject ( (8)) Submitter : Gregg Gress, International Code Council Recommendation: (8) Special Fittings. Fittings such as couplings, proprietary-type joints, saddle tees, gland-type compression fittings, and flared, flareless, or compression-type tubing fittings shall be (1) used within the fitting manufacturersʼ pressure-temperature recommendations; (2) used within the service conditions anticipated with respect to vibration, fatigue, thermal expansion, or contraction; () installed or braced to prevent separation of the joint by gas pressure or external physical damage; and (4) acceptable to the authority having jurisdiction. Substantiation: Saddle tees are typically an assembly that is bolted onto a pipe over a hole drilled into the pipe, thereby creating a branch opening. such assemblies employ an elastomeric gasket. Such gaskets are not employed in any piping/fitting system recognized by this code for indoor piping systems. Committee Meeting Action: Reject Committee Statement: No substantiation is provided to support that there are problems with saddle tees. Ballot Results: Affirmative: 22 Negative: Explanation of Negative: COLLINGS: Saddle valves are not a part of the systems approved for use for gas in this code. This type of fitting has a tendency to leak especially when disturbed. In an active seismic zone this could be a real problem. I agree with the proponent. KOBEL: Saddle valves are not a part of the systems approved for use for gas in this code. Saddle valve gaskets harden and deteriorate over time leading to leaks especially after being disturbed. In an active seismic zone this would create hazardous conditions. I agree with the proponents substantiation. RIBBS: Saddle valves are not a part of the systems approved for use for gas in this code. This type of fitting has a tendency to leak especially when disturbed. In an active systemic zone this could be a real problem. I agree with the proponent Log# 76 NFG-AAA Final Action: Accept (5.6.9()) Submitter : James Ranfone, American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) Committee Recommendation: Plastic Piping, Joints, and Fittings. () Where compression-type mechanical joints are used, the gasket material in the fitting shall be compatible with the plastic piping and with the gas distributed by the system. An internal tubular rigid stiffener shall be used in conjunction with the fitting. The stiffener shall be flush with the end of the pipe or tubing and shall extend at least to the outside end of the pipe or tubing and shall extend at least to the outside end of the compression fitting when installed. The stiffener shall be free of rough or sharp edges and shall not be a force fit in the plastic. Split tubular stiffeners shall not be used. Substantiation: Editorial correction. It appears that an error in printing occurred during the publication of the 1992 edition. The error has been carried forward to the latest edition. Committee Meeting Action: Accept Log# 1 NFG-AAA Final Action: Reject (5.7.2.) Submitter : Kurt Baltrusch, PE, Energy West, Inc. Recommendation: Gas meters regulators shall be located at least ft (0.9 m) from sources of ignition unless specifically designed for the application Substantiation: Gas meters close to a source of ignition are not a concern, however, gas regulators, most of which contain a relief valve, can vent gas and having them close to an ignition source is a concern. Also, the ft. should be measured not from the meter, but from the gas regulator vent. There are some regulators with high-pressure cut offs that are acceptable in these areas. Committee Meeting Action: Reject Committee Statement: No technical substantiated is provided to delete requirements for meters or to add restrictions for regulators Log# 66 NFG-AAA Final Action: Accept in Principle ( ()) Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation: The requirements of this section shall be met and a

10 piping system deemed to have overpressure protection where the following are included in the piping system: () The O nly the simultaneous failure of both devices occurs simultaneously in order to will produce overpressure in the down - stream system. Substantiation: Torturous language selection to avoid the use of must, but better than the present entry. Committee Meeting Action: Accept in Principle Revise to read as follows: The requirements of this section shall be met and a piping system deemed to have overpressure protection where two devices (a service or line pressure regulator plus one other device) are installed such that: (1) Each device shall limit the pressure to a value that does not exceed the maximum working pressure of the downstream system. ( 2) The individual failure of either device shall not result in overpressure of the downstream system. Committee Statement: Accepted with additional editorial revisions. any gas leakage. Where the end sealing is of a type that will retain the full pressure of the pipe, the conduit shall be designed for the same pressure as the pipe. The conduit shall extend at least 4 in. (100 mm) outside the building, be vented above grade to the outside, and be installed so as to prevent the entrance of water and insects Conduit with Both Ends Terminating Indoors. Where the conduit originates and terminates within the same building, the conduit shall originate and terminate in an accessible portion of the building and shall not be sealed. Committee Statement: Accepted with revisions to meet the intent of the submitter. Ballot Results: Affirmative: 22 Negative: Explanation of Negative: COLLINGS: I feel that current code language offers a higher degree of safety. Underground piping even in a conduit that has not been pressure tested to be sure it has no leaks can be subject to a higher degree of degradation. By grading the conduit to the outside you can relieve any build up of gas. True you may or may not detect the leak as fast. However this system will help keep any concentration of gas at a safer level Log# CP128 NFG-AAA Final Action: Accept KOBEL: This proposal if accepted could cause a conflict with the Uniform ( ) Plumbing Code TM (UPC TM ) and the Uniform Mechanical Code TM (UMC TM ) as Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise text to read as follows: Cover Requirements. Underground piping systems shall be installed with a minimum of 18 in. (460 mm) 12 in. (00 mm) of cover. Where external damage to the pipe is not likely to result, the minimum cover shall be 12 in. (00 mm). The minimum cover shall be increased to 18 in. (460 mm) if external damage to the pipe or tubing from external forces is likely to result. Where a minimum of 12 in. (00 mm) of cover cannot be provided, the pipe no proposal has been made to change the language in these documents. RIBBS: This proposal if accepted could cause a conflict in the Uniform Plumbing Code TM (UPC TM ) and the Uniform Mechanical Code TM (UMC TM ) as no proposal has been made to change the language in these documents. Comment on Affirmative VIRGIL: In the Committee Meeting Action for revise the text as follows because this section applies to both ends of the conduit, and text does not indicate which end should be accessible and not sealed....in an accessible portions of the building... shall be installed in conduit or bridged (shielded). Substantiation: To coordinate with NFPA 58. Committee Meeting Action: Accept Ballot Results: Affirmative: 2 Negative: 2 Explanation of Negative: KOBEL: This proposal could cause a conflict with the Uniform Plumbing Code TM (UPC TM ) and the Uniform Mechanical Code TM (UMC TM ) as no proposal has been made to change the language in these documents. This would also add to the conflict that already exists in the International Fuel Gas Code that is based on Z22.1 National Fuel Gas Code. RIBBS: This proposal if accepted could cause a conflict in the Uniform Plumbing Code TM (UPC TM ) and the Uniform Mechanical Code TM (UMC TM ) as no proposal has been made to change the language in these documents. This would also add to the conflict that already exists in the International Fuel Gas Code that is based on Z22.1, National Fuel Gas Code Log# 1 NFG-AAA Final Action: Accept in Principle (6.1.6) Submitter : Russel Iwan, Metropolitan Utilities District / Rep. Metropolitan Utilities District Recommendation: Piping Underground Beneath Buildings. Where the installation of gas piping underground beneath buildings is unavoidable, the piping shall be encased in an approved conduit designed to withstand the superimposed loads. The conduit shall extend into a normally usable and accessible portion of the building, and, at the point where the conduit terminates in the building., the space between the conduit and the gas piping shall be sealed to prevent the possible entrance of any gas leakage. Where the end sealing is of a type that will retain the full pressure of the pipe, the conduit shall be designed for the same pressure as the pipe. The conduit shall extend at least 4 in. (100 mm) outside the building, be vented above grade to the outside, and be installed so as to prevent the entrance of water and insects. Substantiation: If gas piping is installed underground beneath a building in a conduit that extends into a normally usable and accessible portion of the building, and it leaks, I see no difference between this and any gas piping that is leaking within the building. If any gas piping is leaking, whether installed within a building or underground in a conduit, it should be shut off and repaired. I think it would be easier to detect a leak in this manner instead of venting it to the outside. There are also no guidelines in how to size the vent to the outside in event that the conduit is long and has several bends to get to the outside. Committee Meeting Action: Accept in Principle Revise to read: Piping Underground Beneath Buildings. Where the installation of gas piping underground beneath buildings is unavoidable, the piping shall be encased in an approved conduit designed to withstand the superimposed loads and installed in accordance with or Conduit with One End Terminating Outdoors. The conduit shall extend into an normally usable and accessible portion of the building and, at the point where the conduit terminates in the building, the space between the conduit and the gas piping shall be sealed to prevent the possible entrance of Log# CP122 NFG-AAA Final Action: Accept ( ) Submitter : Technical Committee on National Fuel Gas Code Recommendation: Connections Between Metallic and Plastic Piping. Connections made outside and underground between metallic and plastic piping shall be made only with fittings conforming to either: (1) ASTM D 251, Standard Specification for Thermoplastic Gas Pressure Pipe, Tubing, and Fittings, Category I transition fittings. (2) ASTM F197 Standard Specification for Factory Assembled Anodeless Risers and Transition Fittings. Substantiation: Revised to add a relevant reference standard. Committee Meeting Action: Accept Log# 19 NFG-AAA Final Action: Reject ( ) Submitter : Gregg Gress, International Code Council Recommendation: Piping shall be supported with pipe hooks, metal pipe straps, bands, brackets, or hangers suitable for the type and size of piping, of adequate strength and quality, and located at intervals so as to prevent or damp out excessive vibration. All such means of support shall be metallic and compatible with the piping material. Piping shall be anchored to prevent undue strains on connected equipment and shall not be supported by other piping. Pipe hangers and supports shall conform to the requirements of ANSI/MSS SP- 58, Pipe Hangers and Supports - Materials, Design and Manufacture. Substantiation: Piping is commonly supported with plastic stapping and plastic pipe hooks which could fail early in a fire and which could allow piping movement due to material creep. Metallic piping should be supported with like materials. The current text can be interpreted to allow plastic devices for all except pipe straps. Committee Meeting Action: Reject Committee Statement: The proposal would restrict hangers that are being used. Ballot Results: Affirmative: 22 Negative: Explanation of Negative: COLLINGS: I agree with the proponent. Very few listed hangers are used and very few of the hangers that are manufactured for use with specific materials are used with the intended materials. Many try to use plastic hangers and strap with cast and iron pipe. These materials can become brittle over time and break. I feel the code change makes it much clearer that metallic pipe needs to be supported with the intended hangers and strap. KOBEL: I agree with the proponents substantiation. Using plastic hangers and straps with CSST and iron pipe could lead to failure. These materials can become brittle over time and break. I feel the code change makes it much clearer that metallic pipe needs to be supported with the intended hangers and

11 strap. RIBBS: I agree with the proponent. Very few listed hangers are used and very few of the hangers that are manufactured for use with specific materials are used with the intended materials. Many try to use plastic hangers and strap with csst and iron pipe. These materials can become brittle over time and break. I feel the code change makes it much clearer that metallic pipe needs to be supported with the intended hangers and strap Log# 2 NFG-AAA Final Action: Accept in Principle ( (New) ) Submitter : Edward Angelone, KeySpan Energy Delivery / Rep. New York State Gas Utilization Committee Recommendation: Gas piping across flat roofs should be properly anchored to protect against wind storm damage. The piping should be anchored as per table The piping should be strapped permanently to the roof top by means of additional support or directly to the roof utilizing roof support beams. Substantiation: The code is silent to roof top piping and should be addressed. Committee Meeting Action: Accept in Principle Revise as follows: Piping on Roof Tops. Gas piping installed on the roof surfaces shall be elevated above the roof surface and shall be supported in accordance with Table Committee Statement: The code is silent on the installation of piping installed on roofs. The proposed coverage would provide minimum installation requirements Log# 129 NFG-AAA Final Action: Accept (6.5. and A.6.5.) Submitter : Terry Swisher, IAPMO / Rep. Committee on Uniform Plumbing Code Recommendation: Delete text as follows: 6.5.* Mitered Bends. Mitered bends shall be permitted subject to the following limitations: (1) Miters shall not be used in systems having a design pressure greater than 50 psi (40 kpa). Deflections caused by misalignments up to degrees shall not be considered as miters. (2) The total deflection angle at each miter shall not exceed 90 degrees. A.6.5. Care should be taken in making mitered joints to provide proper root opening and alignment and full weld penetration. Substantiation: UNIFORM PLUMBING CODE (UPC) Section Mitered Joints and NFPA 54 Section 6.5. and the Annex reference are to be deleted because this joining method is no longer a gas industry practice. UPC Section and NFPA Section 6.5 and Annex delete the reference to field bends and renumber accordingly. See also Section and NFPA 6.5 in their entirety. The Task Group recommends the UPC & UMC Technical Committees and the NFPA 54-TC review these requirements to see if they are still valid and do these requirements apply to all the materials allowed for piping systems by the codes. Specific concerns have been raised about steel pipe such as how the welding process for the manufacture of the pipe can affect bending. Committee Meeting Action: Accept Log# 17 NFG-AAA Final Action: Accept ( ) Submitter : James P. Brewer, Magic Sweep Corp. / Rep. National Chimney Sweep Guild Recommendation: Modifiy last sentence of section as follows: When equipment is disconnected from an outlet and the outlet is not to be used again immediately, it shall be closed capped or plugged gastight. Substantiation: The current wording, closed gastight could be interpreted to mean simply closing the gas valve serving the outlet. The real intent of this section is to prevent gas flow from unused openings irregardless of the position of the gas valve. Committee Meeting Action: Accept Log# CP12 NFG-AAA Final Action: Accept (6.9.2.) Submitter : Technical Committee on National Fuel Gas Code Recommendation: Relocate 6.9. to Emergency Shutoff Valves. An exterior shutoff valve to permit turning off the gas supply to each building in an emergency shall be provided. The emergency shutoff valves shall be plainly marked as such and their locations posted as required by the authority having jurisdiction. Substantiation: The relocation no longer requires an emergency shutoff valve for buildings served by a single gas meter. The utility service valve will still be installed because it is required by Federal Regulations, and therefore there will be the same number of emergency shutoff valves installed. The code will still require emergency valves for systems where one meter serves multiple systems. Committee Meeting Action: Accept Log# 82 NFG-AAA Final Action: Reject (6.9. Exception (New) ) Submitter : Gregg Gress, International Code Council Recommendation: 6.9. Emergency Shutoff Valves. An exterior shutoff valve to permit turning off the gas supply to each building in an emergency shall be provided. The emergency shutoff valves shall be plainly marked as such and their locations posted as required by the authority having jurisdiction. Exception: Emergency shutoff valves serving one and two-family dwellings shall be permitted to be installed indoors provided that such valves control all outlets within and exterior to the building. Substantiation: This section requires all buildings to have an exterior emergency shutoff valve, which would include dwelling units. An exterior valve that is posted invites vandalism. Homeowners might return from vacation to find their water piping frozen and severe property damage. If the service riser valve does not satisfy the requirement of this section, a ball valve will likely be installed which is conspicuous and easily operated by pranksters or vandals. Committee Meeting Action: Reject Committee Statement: Refer to Proposal (Log #CP12) which makes this proposal moot Log# 94 NFG-AAA Final Action: Accept ( ) Submitter : Gregg Gress, International Code Council Recommendation: Where new branches are installed from the point of delivery to new appliance(s), only the newly installed branch(es) shall be required to be pressure tested. Connections between the new piping and the existing piping shall be tested with a noncorrosive leak-detecting fluid or approved leak-detecting methods. Substantiation: The scope of this section is unnecessarily limited to branches that take off from the point of delivery. This provision is reasonable for new branches anywhere in a piping system. Committee Meeting Action: Accept Log# 111 NFG-AAA Final Action: Reject ( (New) ) Submitter : John J. Lentini, Applied Technical Services, Inc. Recommendation: Add a new paragraph: For fixed systems, responsibility for ensuring that the requirements of this section have been met shall rest with the fuel gas retailer. Substantiation: The code, as currently written, requires inspection and testing of new, or out-of-gas systems, but it does not fix responsibility on a particular entity. This failure to name the responsible entity allows responsible parties to abdicate responsibility, resulting in tragic consequences. By fixing responsibility on the retailer, the entity in the best position to conduct an inspection and pressure test, retailers will be more focused on safety. Nothing in this proposal would prevent the retailer from contracting with another entity for actually conducting the tests and inspections required for safe operation, but the retailer would still retain ultimate responsibility. Committee Meeting Action: Reject Committee Statement: The Code should not assign responsibility, rather it should require what is needed for safety Log# 8 NFG-AAA Final Action: Reject ( (New) ) 2002: The comment proposed something that could not be properly handled within the time frame for processing the 2002 edition of NFPA 54, and was held for the 2005 edition.

12 Submitter : Martin P. Petchul, PE, Peidmont Natural Gas Recommendation: Add new text to read as follows: Where the maximum working pressure of the existing gas piping system is increased, the piping system shall be pressure tested according to 7.1. A visual examination of the existing gas piping system is not required under these conditions. Where repairs or additions are made to the existing gas piping system, the affected piping shall be tested at the newly established test pressure. Connections to the piping system shall be tested with a noncorrosive leak-detecting fluid or approved leak-detecting methods. Substantiation: Coverage is needed for instances when the pressure of an existing piping system is increased. This frequently occurs when a contractor wants to use an existing low pressure (inches WC) system with higher pressure gas (either higher inches WC or PSIG). Please note: it is possible to raise the pressure of the system and still be within the previously met test pressure requirements of The goal of the proposal is to require a pressure test and not a visual inspection when increasing the working pressure of an existing piping system. Committee Meeting Action: Reject Committee Statement: All piping systems are tested at a minimum of psi. These systems can be used up to 2 psi. Based on this, and a review of the substantiation provided, the change is not needed. the gas specified on the rating plate for use with a different gas without consulting the installation instruction, the serving gas supplier, or the appliance equipment manufacturer for complete instructions Safety Shutoff Devices for Unlisted LP- Gas Appliances Equipment Used Indoors. Unlisted appliances gas utilization equipment for use with * Protection of Appliances Gas Equipment from Fumes or Gases Other than Products of Combustion Non-direct-vent type gas appliances installed... shall be located in a mechanical an equipment room separate... Direct vent appliances equipment shall be Process Air. In addition... cooling of appliances, equipment or material, controlling Structural members of a building shall not pass through appliances gas utilization equipment having Structural members passing through appliances gas utilization equipment having an... Building columns, girders, beams, or trusses shall not be installed within appliances equipment, unless Gas utilization Appliances and equipment shall be furnished... the building structure, appliance and equipment At the locations selected for installation of gas utilization appliances and equipment, the dynamic and static load-carrying capacities of the building structure shall be checked to determine if they are adequate to carry the additional loads. The appliances and equipment shall be supported and Flammable Vapors. Gas A a ppliances shall not be installed... Gas utilization equipment Appliances installed in compliance with Log# 67 NFG-AAA Final Action: Reject Gas utilization equipment Appliances in residential garages and... (7..2) Such equipment appliances shall be located or protected... Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation: 7..2 Placing in Operation. When piping full of air is placed in operation, the air in the piping shall be displaced with fuel gas, except where such piping is required by Table 7..2 to be purged with an inert gas prior to introduction of fuel gas. The air can be safely displaced with fuel gas provided that a moderately rapid and continuous flow of fuel gas is introduced at one end of the line and air is vented out at the other end. The fuel gas flow shall be continued without interruption until the vented gas is free of air. The point of discharge shall not be left unattended during purging. After purging, the vent shall then be closed. Where required by Table 7..2, the air in the piping shall first be displaced with an inert gas, and the inert gas shall then be displaced with fuel gas Placing in Operation. When piping full of air is placed in operation, the air in the piping shall be displaced by one of the following means: The general procedure is to purge the air in the piping with an inert gas, which is then purged by fuel gas When the size and length of the piping to be placed in operation are less than the values given in Table 7..2, the following procedure is permitted: The air in the piping shall be purged with fuel gas, that is, a moderately rapid and continuous flow of fuel gas in introduced at one end of the line and air is vented out the other end In either case, the point of discharge shall not be left unattended during purging. After purging, the vent shall be closed. Substantiation: To clarify and simplify the present wording. Committee Meeting Action: Reject Committee Statement: The proposed revision does not add clarity When appliances are installed in a separate, enclosed space having access only from outside of the garage, such equipment appliance shall be permitted to Parking Structures. Gas utilization equipment Appliances installed in enclosed Repair Garages. Gas utilization equipment Appliances installed in repair... Exception No. 2: Heating equipment appliances for vehicle repair areas where Gas Equipment Appliance Physical Protection. Where it is necessary to locate appliances gas utilization equipment close to a passageway traveled by vehicles or machinery equipment, guardrails or bumper plates shall be installed to protect the equipment from damage Venting of Flue Gases. Gas utilization equipment Appliances shall be vented in accordance with the provisions of Chapter Extra Device or Attachment. No device or attachment shall be installed on any gas utilization equipment appliance that could in any way impair the combustion of gas Adequate Capacity of Piping. When additional gas utilization equipment is appliances are being connected to a gas piping system.. Where inadequate, the existing system shall be enlarged as necessary, or separate gas piping of adequate capacity shall be run from the point of delivery to the appliance equipment Avoid Strain on Gas Piping. Gas utilization equipment Appliances shall be supported Gas Appliance Pressure Regulators. Where the gas supply pressure is higher than that at which the gas utilization equipment appliance is designed to operate or varies beyond the design pressure limits of the equipment appliance, an gas appliance pressure regulator shall be installed Venting of Gas Appliance Pressure Regulators. (1) Gas A a ppliance pressure regulators requiring access to the atmosphere for successful operation shall be equipped with vent piping leading outdoors or, if Log# CP19 NFG-AAA Final Action: Accept the regulator vent is an integral part of the equipment appliance, into the... (Chapter 8) (2) Vent limiting means shall be employed on listed gas appliance pressure Submitter : Technical Committee on National Fuel Gas Code Recommendation: Chapter 8 Appliance, Equipment and Accessory Installation 8.1.1* Appliances, Equipment and Accessories, and Equipment To Be Approved. Gas A a ppliances, equipment and accessories, and gas utilization equipment shall be approved. Approved shall mean acceptable to the authority having jurisdiction. Acceptance of unlisted appliances, gas utilization equipment and accessories shall be on the basis of a sound engineering evaluation. In such cases, the appliance, equipment or accessory shall be safe and suitable for the proposed service and shall be recommended for the service by the manufacturer Added or Converted Appliances Equipment. When additional or replacement appliances or equipment is are installed or an appliance is converted to gas from another fuel, the location in which the appliances or equipment is are to be operated shall be checked to verify the following: (2) The installation components and equipment appliances meet the clearances to combustible material provisions of It shall be determined that the installation and operation of the additional or replacement equipment appliances does not render the remaining equipment appliances unsafe for continued operation Type of Gas(es). It shall be determined whether the appliance gas utilization equipment has been designed for use with the gas to which it will be connected. No attempt shall be made to convert the appliance equipment from regulators only. (4) Under no circumstances shall a regulator be vented to the gas utilization equipment appliance flue or exhaust system. (6) A vent line(s) from a gas appliance pressure regulator Bleed Lines for Diaphragm-Type Valves. () Bleed lines shall not terminate in the gas utilization equipment appliance flue or exhaust system. (5) A bleed line(s) from a diaphragm type valve and a vent line(s) from a gas appliance pressure regulator shall Combination of Appliances and Equipment. Any combination of appliances, gas utilization equipment, attachments, or devices used together in any manner shall comply with the standards that apply to the individual appliance and equipment Installation Instructions. The installing agency shall conform with the appliance and equipment manufacturersʼ recommendations in completing an installation Protection of Outdoor Equipment. Gas utilization equipment Appliances not listed for outdoor installation but installed outdoors shall be provided with protection to the degree that the environment requires. Equipment Appliances listed for outdoor installation shall be permitted to be installed without protection in accordance with the provisions of their listing. [See ] Accessibility for Service. All gas utilization equipment appliances shall be located with respect to building construction and other equipment so as to permit access to the gas utilization equipment appliance. Sufficient clearance 54-12

13 shall be... area adjacent to the equipment appliance shall be floored Clearance to Combustible Materials. Gas utilization equipment Appliances and their vent connectors shall be... Minimum clearances between combustible walls and the back and sides of various conventional types of equipment appliances and their vent connectors are Installation of Carpeting. Equipment Appliances shall not be installed on carpeting, unless the equipment appliance is listed for such installation Air for combustion, ventilation, and dilution of flue gases for gas utilization equipment appliances installed in Gas A a ppliances of other than Equipment Appliances shall be located Where used, a... enclosure as the equipment appliance served so Indoor Opening Size and Location. (1)* Combining spaces on the same story. Each opening shall... total input rating of all gas utilization equipment appliances in the space, but... (2) Combining spaces in different stories. The volumes of... total input rating of all gas utilization equipment appliances Two Permanent Openings Method: (1)* Where directly communicating with... total input rating of all equipment appliances in the enclosure.... (2)* Where communicating with,,, total input rating of all equipment appliances in the enclosure * One Permanent Opening Method:... The equipment appliance shall have clearances of... (1)... total input rating of all equipment appliances located in the enclosure Motorized louvers shall be interlocked with the equipment appliance so they Exception: Direct vent gas-fired appliances designed for Appliances Equipment on Roofs Gas utilization equipment Appliances on roofs shall be... Where enclosures are... service access panel(s) of the equipment appliance and the wall of the enclosure Roofs on which equipment is appliances are to be installed shall Installation of Equipment Appliances on Roofs. to the inlet of the equipment appliance as practical at the time of equipment appliance installation Installation of Piping. Piping shall be installed in a manner not to interfere with inspection, maintenance, or servicing of the gas utilization equipment appliances Electrical Connections. Electrical connections between gas utilization equipment appliances and the building wiring, including the grounding of the equipment appliances, shall conform to NFPA 70, National Electrical Code Electrical Ignition and Control Devices. Electrical ignition... operation of the gas utilization equipment appliance in the event of Electrical Circuit. The electrical... with the gas utilization equipment appliances shall be in accordance with the wiring diagrams supplied with the equipment appliance Continuous Power. All gas utilization equipment appliances using electrical controls shall... Central heating equipment appliances shall be provided Drafts. Any hole in the plaster... thermostat to the gas utilization equipment appliance being controlled shall... Substantiation: Editorial, consistent terminology use. Editorial changes to Chapter 8. Also see 54-2 (Log #CP1), (Log #CP18), (Log #CP140), and (Log #CP141) for remaining revisions to chapters. The National Fuel Gas Code is sometimes inconsistent in the use of such terms as gas utilization equipment, equipment, appliance, gas-burning devices, gas-fired appliances, etc. The use of similar terms to describe gas consuming, and in some cases, non-consuming devices, and their inconsistent use in the code may confuse the code user as to which provisions apply. The main goal of this draft is to separate appliances that consume gas from equipment and systems used in gas delivery, venting, etc. and thereby improve the codeʼs precision. Committee Meeting Action: Accept Gas utilization equipment Appliances shall be a Log# CP111 NFG-AAA Final Action: Accept Equipment Appliances shall be installed on... any part of the (8.1.1) equipment appliance and the All equipment appliances requiring an external source of electrical power for its operation shall be provided with (1) a readily accessible electrical disconnecting means within sight of the equipment appliance that will completely deenergize the equipment appliance, and (2) a 120-V ac grounding-type receptacle outlet on the roof adjacent to the equipment appliance. The receptacle outlet shall be on the supply side of the disconnect switch Where water stands on the roof at the equipment appliance or in the passageways to the equipment appliance, or where... Such platform(s) or walkway(s) shall be located adjacent to the equipment appliance and control panels so that the equipment appliance can be safely serviced where water stands on the roof Access to Equipment Appliances on Roofs Gas utilization equipment Appliances located on roofs or other elevated locations shall be accessible. 8.5 Appliance and Equipment Connections to Building Piping Connecting Gas Appliances and Equipment. Gas utilization equipment Appliances and equipment shall be connected... ()... The connector shall be used in accordance with the terms of their listing, and shall be in the same room as the equipment appliance.... (6) Gas-fired F f ood service (commercial cooking) equipment appliances listed for use with casters or otherwise subject to movement for cleaning, and other large and heavy gas utilization equipment appliances that can be moved Use of Nonmetallic Gas Hose Connectors. (1) Indoor. Indoor gas hose connectors shall be used only to connect laboratory, shop, and ironing equipment appliances requiring mobility during operation. An equipment appliance shutoff valve shall... (2) Outdoor. Outdoor gas hose connectors are permitted to connect portable outdoor gas-fired equipment appliances. An equipment appliance shutoff valve.. This connection... area where the equipment appliance is to be used Connection of Portable and Mobile Industrial Gas Equipment Where portable industrial gas utilization equipment appliances or equipment appliances requiring mobility or subject to vibration is Where industrial gas utilization equipment appliances requiring mobility is connected to Where industrial gas utilization equipment appliances subject to vibration is Equipment Appliance Shutoff Valves and Connections. Gas utilization equipment Appliances connected to a piping system shall... installed within 6 ft (1.8 m) of the equipment appliance it serves. Shutoff valves serving decorative gas appliances shall be Quick-Disconnect Devices. Quick disconnect devices used to connect equipment appliances to the building piping shall be listed * Gas Convenience Outlets. Gas utilization equipment Appliances shall be permitted to Sediment Trap. Where a sediment trap is not incorporated as a part of the gas utilization equipment appliance, a sediment trap shall be installed as close Submitter : Technical Committee on National Fuel Gas Code Recommendation:..40 Chimney, Factory-Built. A chimney composed of... with the t erms of listing manufacturerʼs installation instructions to form the completed chimney Gas Vent. A passageway composed of... with the terms of listing manufacturerʼs installation instructions for conveying * Appliances, Accessories, and Equipment To Be Approved. Gas appliances, accessories, and gas utilization equipment shall be approved. Approved shall mean acceptable to the authority having jurisdiction. Listed appliances, accessories and equipment shall be installed in accordance with the manufacturerʼs installation instructions. Acceptance of Protection of Outdoor Equipment.... Equipment listed... in accordance with the p rovisions of their listing manufacturerʼs installation instructions Exception: Direct vent gas-fired appliances... installed in accordance with t he listing and the manufacturerʼs instruction s Gas utilization equipment shall be installed in accordance with its listing and the manufacturerʼs installation instructions ()... The connector shall be used in accordance with the t erms of their listing manufacturerʼs installation instructions, and shall be Use of Nonmetallic Gas Hose Connectors. Listed gas hose connectors... with the terms of their listing manufacturerʼs installation instructions and as follows: 8.5.6* Gas Convenience Outlets. Gas utilization equipment shall be... used in accordance with the terms of their listings manufacturerʼs installation instructions Application.... Listed gas utilization equipment shall be installed in accordance with their listing and installed in accordance with the manufacturersʼ manufacturerʼs installation instructions, or as (1) Listed air conditioning equipment shall be installed with clearances per the terms of their listing and in accordance with the manufacturerʼs instructions Listed central heating furnaces and low-pressure boilers... shall be installed with clearances per the terms of their listing and in accordance with the manufacturerʼs instructions.... Table 9.2.(b) 11. Listed single-wall connectors shall be installed in accordance with the terms of their listing and the manufacturerʼs installation instructions (1)... Clothes dryers listed for installation at reduced clearances shall be installed in accordance with the ir listing manufacturerʼs installation instructions A listed decorative appliance for installation in a vented fireplace shall be installed in accordance with its listing and the manufacturerʼs installation instructions (1) Listed vented gas fireplaces shall be installed in accordance with the ir listing and the manufacturersʼ manufacturerʼs installation instructions and (1) Furnaces listed for installation at lesser clearances shall be installed in accordance with the ir listings manufactureʼs installation instructions (1) Listed floor furnaces shall be installed in accordance with the ir 54-1

14 listing and the manufacturersʼ manufacturerʼs installation instructions Listed automatically operated floor furnaces shall be equipped with temperature limit controls in accordance with the terms of their listing Clearance for Listed Equipment. Floor-mounted food service equipment... in accordance with its listing and the manufacturerʼs installation instructions Listed floor-mounted food service equipment... in accordance with its listing and the manufacturerʼs installation instructions For Use with Casters. Floor-mounted equipment... in accordance with the ir listing and the accompanying manufacturerʼs installation instructions for Food service counter appliances... in accordance with the ir listing and the manufacturersʼ manufacturerʼs installation instructions Clearance from Combustible Material. (1) Listed floor-mounted household cooking appliances... in accordance with the ir listing and the manufacturersʼ manufacturerʼs installation instructions. () Listed household cooking appliances...in accordance with the manufacturerʼs installation instructions for standards applying to the supplementary () A listed cooking appliance or microwave oven... the terms of the upper applianceʼs l isting and the manufacturerʼs installation instructions () A listed cooking appliance or microwave oven... the terms of the upper applianceʼs listing and the manufacturerʼs installation instructions Installation. Listed built-in household cooking appliances shall be installed in accordance with their listing and the manufacturerʼs installation instructions Clearances for Listed Appliances. Listed illuminating appliances... in accordance with their listing and the manufacturers ʻ manufacturerʼs installation instructions Clearance. (1) Listed heaters... in accordance with the ir listing and the manufacturersʼ manufacturerʼs installation instructions Listed Units. Listed open-top broiler units shall be installed in accordance with their listing and the manufacturersʼ manufacturerʼs installation instructions Listed Units. Listed outdoor cooking appliances... in accordance with their listing and the manufacturersʼ manufacturerʼs installation instructions Clearance. (2) A listed pool heater shall be installed in accordance with its listing and the manufacturerʼs installation instructions Clearance. Listed room heaters shall be installed in accordance with their listings and the manufacturers ʻ manufacturerʼs installation instructions. In no case shall the clearances be such as to interfere with combustion air and accessibility Clearance. A listed gas-fired toilet shall be installed in accordance with its listing and the manufacturerʼs installation instructions, provided (1)... A unit heater listed for reduced clearances shall be installed in accordance with its listing and the manufacturerʼs installation instructions (1)... A unit heater listed for reduced clearances shall be installed in accordance with its listing and the manufacturerʼs installation instructions Listed wall furnaces shall be installed in accordance with their listing and the manufacturers ʻ manufacturerʼs installation instructions Listed water heaters shall be installed in accordance with their instructions Exception: Direct vent gas-fired appliances... in accordance with the listing and the manufacturerʼs installation instruction s Application. The installation of gas vents shall comply with the following requirements: (1) Gas vents shall be installed in accordance with the terms of their listings and the manufacturersʼ manufacturerʼs installation instructions. (6) Gas vents installed... in accordance with the terms of their listing and the manufacturersʼ manufacturerʼs installation instructions Support of Gas Vents. Gas vents... in accordance with their listings and the manufacturers ʻ manufacturerʼs installation instructions. Table Note: These clearances shall apply unless the listing installation instructions of an a listed appliance or connector specifies different clearances, in which case the listed clearances shall apply Obstructions. (1) Draft regulators and safety controls... in accordance with the terms of their listing manufacturerʼs installation instructions. () Listed heat reclaimers and automatically operated vent dampers installed in accordance with the t erms of their listing manufacturerʼs installation instructions () Listed appliances derated in accordance with the terms of the listing manufacturerʼs installation instructions shall be permitted Exception: Vents serving listed appliances installed in accordance with the appliance manufacturerʼs installation instructions and the terms of the listing Exception: Vents serving listed appliances installed in accordance with the appliance manufacturerʼs installation instructions and the terms of the listing. K.1.1 Fireplace, Factory-Built. A fireplace... in accordance with the terms of listing manufacturerʼs installation instructions to form the completed fireplace. Substantiation: The phrasing in accordance with its listing is being eliminated from the entire code since the installer rarely has the product standard. The product standard contains required installation instructions as part of the listing that must be supplied by each manufacturer. Therefore in many cases, installed in accordance with itʼs listing is the same as the manufacturerʼs installation instructions. Committee Meeting Action: Accept Ballot Results: Affirmative: 22 Negative: 1 Ballot Not Returned: 7 BUCHAL, CAVE, DOUCETTE, HIMES, OLSON, PADGETT, RIBBS Explanation of Negative: WOZNIAK: Removal of the statement,...in accordance with its Listing and replacement with...manufacturerʼs installation instruction, is not, contrary to the Rationale, the same. While the installer may not have the product standard or the report of the testing agency, the description of the product standard or the report of the testing agency, the description of the product category is readily obtainable. The terms of the listing are usually described therein. Reference to the listing in the Code - and reinforcement of the manufacturerʼs instructions - is essential to verify that the acceptability of the installation is indeed according to the specifications of the testing agency (vis-à-vis the standard) and not soley based upon the manufacturerʼs instructions. listing and the manufacturers ʻ manufacturerʼs installation instructions Pressure-Limiting Devices. A water heater installation shall be provided with overpressure protection by means of an approved, listed device installed Log# CP16 NFG-AAA Final Action: Accept in accordance with the terms of its listing and the manufacturerʼs installation (8.1.4) instructions Temperature-Limiting Devices. Water heater installation... in accordance with the terms of its listing and the manufacturers ʻ manufacturerʼs installation instructions Temperature, Pressure, and Vacuum Relief Devices. The installation of T t emperature, pressure, and vacuum relief devices or combinations thereof, and automatic gas shutoff devices, shall be installed in accordance with the terms of their listing and the manufacturers ʻ manufacturerʼs installation instructions General.... Listed vents shall be installed in accordance with the manufacturerʼs installation instructions Direct-Vent Equipment. Listed direct-vent... in accordance with the Submitter : Technical Committee on National Fuel Gas Code Recommendation: Safety Shutoff Devices for Unlisted LP-Gas Equipment Used Indoors. Unlisted gas utilization equipment for use with undiluted liquefied petroleum gases and installed indoors, except attended laboratory equipment, shall be equipped with safety shutoff devices of the complete shutoff type. Substantiation: To allow lab equipment that do not contain shuttoff valves. Committee Meeting Action: Accept terms of its listing, the manufacturerʼs installation instructions, and Equipment with Integral Vents. Gas utilization equipment... in accordance with its listing, t he manufacturersʼ installation instructions, and Log# 115 NFG-AAA Final Action: Reject and ( ) Mechanical draft systems... in accordance with t he terms of their listing and both the appliance and the mechanical draft system manufacturers ʻ manufacturerʼs installation instructions Special Gas Vent. Special gas vent... in accordance with the terms of the special gas vent listing and the manufacturersʼ manufacturerʼs installation instructions Factory-built chimneys shall be installed in accordance with their listing and the manufacturers ʻ manufacturerʼs installation instructions * Exception: The liner shall be installed in accordance with the liner manufacturerʼs installation instructions and the terms of the listing Support of Chimneys. Listed factory-built chimneys... in accordance with their listings and the manufacturers ʻ manufacturerʼs installation Submitter : Robert S. Boiko, R. Boiko Corporation Recommendation: Revise text to read as follows: Gas Utilization equipment in residential garages and in adjacent spaces that open to the garage and are not part of the living space of a dwelling unit shall be installed so that all burners and burner ignition devices are located not less than 18 in. (460 mm) above the floor unless listed as flammable vapor ignition resistant. Substantiation: They do not allow these listed heaters to be near hazardous flammable materials, but NFPA does. NFPA NEC 2002 is cited and demonstrates the special hazardous environment in garages and the very special precautions to take to avoid explosions and serious damage or death

15 Note: Supporting material is available for review at NFPA Headquarters. Committee Meeting Action: Reject Committee Statement: Residential garages are not classified, therefore the substantiation is not correct Log# 118 NFG-AAA Final Action: Reject ( ) Submitter : Robert S. Boiko, R. Boiko Corporation Recommendation: Revise text to read as follows: Gas Utilization equipment in residential garages and in adjacent spaces that open to the garage and are not part of the living space of a dwelling unit shall be installed so that all burners and burner ignition devices are located not less than 18 in. (460 mm) above the floor unless listed as flammable vapor ignition resistant and of the direct vent or coaxial/concentric vent type where all combustion air is drawn from outside the structure. Substantiation: This is an addendum/update to (Log #1). In addition to the previous supporting information the attached supporting material show two types of residential water heaters produced by all of the major manufacturers, that take all combustion air from outside and exhaust to the outside. One model requires no electrical connection, the other uses a 120 volt blower system. The chambers are sealed from burning contaminated air. Note: Supporting material is available for review at NFPA Headquarters. Committee Meeting Action: Reject Committee Statement: No reason is provided to support that the current requirements are inadequate. Ballot Results: Affirmative: 24 Negative: 1 Explanation of Negative: COLLINGS: I feel that the proponent is correct. Since the real issue is the source of combustion and not just the burner. Also if an incident does occur and the equipment functions properly there is still a high repair cost to reactivate the equipment. Tests show that raising the source of ignition to 18 in. above the floor delays ignition of fumes considerably which gives an added margin of safety and time to react to a spill or other incident that could create flammable vapors Log# 68 NFG-AAA Final Action: Reject (8...2) Submitter : Richard E. White, Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation: 8...2* One Permanent Opening Method: One permanent opening, commencing within 12 in. (00 mm) of the top of the enclosure, shall be provided. The equipment appliance shall have clearances of at least 1 in. (25 mm) from the sides and back and 6 in. (150 mm) from the f ront of the appliance enclosure. The opening shall directly communicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces that freely communicate with the outdoors [see Figure A.8...2] and shall have a minimum free area of the comply with the following limitations : (1) Minimum free area of 1 in. 2 /000 Btu/hr (700 mm 2 /kw) of the total input rating of all equipment located in the enclosure, and (2) Minimum free area of n N ot less than the sum of the areas of all vent connectors in the space, () Minimum dimension of not less than in. Substantiation: To clarify the wording and add the requirement of inch minimum dimension. Committee Meeting Action: Reject Committee Statement: The proposal does not add clarity. The in. requirement is currently in Log# 112 NFG-AAA Final Action: Accept (8..7) Submitter : Technical Committee on National Fuel Gas Code Recommendation: 1. Revise 8..7 to read as follows: 8..7 Louvers and Grilles and Screens Louvers and Grilles. The required size of openings for combustion, ventilation, and dilution air shall be based on the net free area of each opening. Where the free area through a design of louver or grille or screen is known, it shall be used in calculating the size opening required to provide the free area specified. Where the louver and grille design and free area are not known, it shall be assumed that wood louvers will have 25 percent free area and metal louvers and grilles will have 75 percent free area. Nonmotorized louvers and grilles shall be fixed in the open position Minimum Screen Mesh Size. Screens shall not be smaller than 1/4-in. mesh. Renumber as Substantiation: The requirement was inadvertently deleted form the 1999 edition of the code and users need the text. No reason for the deletion in 1999 was found. Committee Meeting Action: Accept 1. Accept the proposed 8..7 and Revise to read: Minimum Screen Mesh Size. Screens shall have a mesh size not smaller than 1/4-inch. Committee Statement: Accepted with an editorial change Log# 20 NFG-AAA Final Action: Accept (8..8.1) Submitter : Gregg Gress, International Code Council Recommendation: Ducts shall be constructed of galvanized steel or an equivalent corrosion-resistant material a material having equivalent corrosion resistance, strength and rigidity. Substantiation: This section can be interpreted as allowing flexible non metallic and flexible metallic ducts, both of which have poor flow characteristics which were probably not anticipated when this provision was put in the code. Flexible ducts are also subject to restrictions and collapse because they are not structurally comparable to steel ducts. Committee Meeting Action: Accept Log# 120 NFG-AAA Final Action: Reject (8..8.7) Submitter : John Crouch, HPBA (Hearth, Patio & Barbecue Association) Recommendation: Revise text to read as follows: Exception: Direct Vent gas-fired appliances designed for installation in a solid fuel burning fireplace where installed in accordance with the listing and the manufacturerʼs instructions. Substantiation: The remaining space surrounding a chimney liner, gas vent, special gas vent, or plastic piping installed within a masonry, metal, or factory built chimney shall not be used to supply combustion air. Exception: Direct vent gas-fired appliances designed for installation in a solid fuel burning fireplace where installed in accordance with the listing and the manufacturerʼs instructions The remaining space surrounding a chimney liner, gas vent, special gas vent, or plastic piping installed within a masonry, metal, or factory built chimney shall not be used to supply combustion air. Exception: Direct vent gas-fired appliances designed for installation in a solid fuel burning fireplace where installed in accordance with the listing and the manufacturerʼs instructions. Justification: The deletion clarifies that freestanding direct vent appliances also can be installed to use an existing chimney to supply combustion air, for example, through a thimble penetration of the chimney. There is no difference in technology or performance between a freestanding appliance and a fireplace insert that would provide a rationale for different treatment of the two appliance types with regard to combustion air from the chimney. Committee Meeting Action: Reject Committee Statement: The committee added the exception to in the 2002 edition based on appliances that were listed. The committee is not aware of the need to expand this, and sees problems in doing so. The committee invites manufacturers who believe that this change is needed to provide specific substantiation Log# CP129 NFG-AAA Final Action: Accept (8.5) Submitter : Technical Committee on National Fuel Gas Code Recommendation: Add new text to read as follows: 8.5 Equipment in Attics Attic Access. An attic in which an appliance is installed shall be accessible through an opening and passageway at least as large as the largest component of the appliance, not less than 22 in. by 0 in. (560 mm x 760 mm) Where the height of the passageway is less than 6 ft, the distance from the passageway access the to appliance shall not exceed 20 ft (6.1 m) measured along the center line of the passageway The passageway shall be unobstructed and shall have solid flooring not less than 24 in. (610 mm) wide from the entrance opening to the appliance Work Platform. A level working platform not less than 0 in. (760 mm) by 0 in. shall be provided in front of the service side of the appliance.

16 8.5. Lighting and Convenience Outlet. A permanent 120-volt receptacle outlet and a lighting fixture shall be installed near the appliance. The switch controlling the lighting fixture shall be located at the entrance to the passageway. Substantiation: A new section is added to provide provisions for the installation of appliances in attics. Committee Meeting Action: Accept () Listed appliance connector in compliance with ANSI Z21.24, Connectors for Gas Appliances. The connector shall be used in accordance with the terms of their listing, and shall be in the same room as the equipment. Only one connector shall be used per appliance Maximum Length and Number of Unlisted Appliance Connectors. Unlisted appliance connectors shall be a maximum of 6 ft. Only one connector shall be used per appliance Equipment Shutoff Valves and Connections. Gas utilization equipment connected to a piping system shall have an accessible, approved manual shutoff valve with a nondisplaceable valve member, or a listed gas convenience outlet, located and installed in accordance with one of the following: 54-7 Log# 122 NFG-AAA Final Action: Reject 1. W w ithin 6 ft (1.8 m) of the equipment it serves. (8.5.1) 2. At the manifold and installed in each gas line that serves an individual Submitter : Jon Nisja, Northcentral Regional Fire Code Development Committee Recommendation: Revise to read: Connecting Gas Equipment. Gas utilization equipment shall be connected to the building piping in compliance with through by one of the following: (1) Rigid metallic pipe and fittings. (2) Semirigid metallic tubing and metallic fittings. Aluminum alloy tubing shall not be used in exterior locations. () A listed connector in compliance with ANSI Z21.24, Standard for Connectors for Gas Appliances. The connector shall be used in accordance with the terms of its listing and shall be in the same room as the equipment. Only one connector shall be used per appliance. (4) CSST where installed in accordance with the manufacturerʼs instructions. (5) Listed nonmetallic gas hose connectors in accordance with (6) Gas-fired food service (commercial cooking) equipment listed for use with casters or otherwise subject to movement for cleaning, and other large and heavy gas utilization equipment that can be moved, shall be secured to prevent accidental damage or disconnection of the gas line and connected in accordance with the connector manufacturerʼs installation instructions using a listed appliance connector complying with ANSI Z21.69, Connectors for Movable Gas Appliances. (7) In 8.5.1(2), 8.5.1(), and 8.5.1(5), the connector or tubing shall be installed so as to be protected against physical and thermal damage. Aluminum alloy tubing and connectors shall be coated to protect against external corrosion where they are in contact with masonry, plaster, or insulation or are subject to repeated wettings by such liquids as water (except rain water), detergents, or sewage. Substantiation: This change was submitted in the May 2004 cycle to NFPA 96. The 96 committee rejected the proposal stating that this issue was covered in NFPA 54. Since portable gas appliances are specifically addressed it would be logical to insert this language in 54. Restaurants and other establishments frequently use gas fire appliances that have a degree of portability increasing the potential for an employee to inadvertently moving the appliance and severing the gas line. Committee Meeting Action: Reject Committee Statement: The subject is covered in appliance located within 50 feet of the manifold. The valves shall be readily accessible and permanently identified.. In the fireplace if listed for such use. 4. In an area remote from a gas fireplace, room heater installed in a fireplace, or decorative appliance for installation in vented fireplace, where such valves are readily accessible, permanently identified and shall serve no other equipment. Where a n appliance connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from this the valve to permit removal of controls. Shutoff valves serving decorative gas appliances shall be permitted to be installed in fireplaces if listed for such use. Substantiation: To permit alternative locations for manual shutoff valves in gas piping systems, define appliance connectors, and ensure that the codeʼs gas piping installation and pressure testing requirements are applied up to all parts of the gas piping system no matter where the valve is installed. Alternative valve locations: Manual shutoff valves are installed to permit the servicing of individual gas equipment without the need to shut down the entire system. Therefore, the remote installation of equipment shutoff valves serving individual appliances should be allowed if they are readily accessible and identified. The proposed revisions provide safe and reasonable installation requirements for shutoff valves that are only used when servicing or replacing the equipment. There is little safety need for these valves to be located within 6 feet of a gas log or gas fireplace or when a manifold piping system is installed. The requirement for gas fireplace and gas logs are similar to those include in the International Fuel Gas Code which is widely adopted in the US. Appliance Connector/Piping System Definitions: The new definition for appliance connector and the revision to the piping system definition are meant ensure that the length of pipe and tubing between the shutoff valve and appliance (in manifolded systems or where the valve is remotely located for gas fireplace equipment) are subject to all of the codeʼs piping installation and testing requirements. Clarification of valves located before appliance connectors: To clarify that shutoff valves are to be installed upstream from listed and other flexible appliance connectors. Since fixed appliances are often connected directly to the gas piping by the same gas piping material that is used through out the system (i.e. black steel, copper, CSST), the code requirement to locate the valve before the connector makes little sense for these appliances. One 6 ft Unlisted Connector Length: In making the above revisions, a loophole is created that raises the possibility that two or more unlisted connectors may be joined together as the piping system or appliance connector. The new Log# CP126 NFG-AAA Final Action: Accept requirement is meant to allow only one unlisted connector per appliance (same (8.5.1) as for listed) and to limit overall connector length to 6 feet. Committee Meeting Action: Accept in Principle Submitter : Technical Committee on National Fuel Gas Code Recommendation: 8.5.1(7) In 8.5.1(2), (), (4), and (5) the connector or Equipment Shutoff Valves and Connections. Gas utilization equipment tubing shall be installed so as to be protected against physical and thermal connected to a piping system shall have an accessible, approved manual shutoff damage. Aluminum alloy tubing and connectors shall be coated to protect valve with a nondisplaceable valve member, or a listed gas convenience outlet, against external corrosion where they are in contact with masonry, plaster, or installed within 6 ft (1.8 m) of the equipment it serves. Where a connector is insulation or are subject to repeated wettings by such liquids as water (except used, the valve shall be installed upstream of the connector. A union or flanged rain water), detergents, or sewage. connection shall be provided downstream from this valve to permit removal of Substantiation: CSST is added to help ensure that it is protected as other controls. Shutoff valves serving decorative gas appliances shall be permitted to tubing products are required too. be installed in fireplaces if listed for such use. Committee Meeting Action: Accept Equipment Shutoff Valves and Connections. Each gas appliance connected to a piping system shall have an accessible, approved manual shutoff valve with a nondisplaceable valve member, or a listed gas convenience outlet. Such valves and convenience outlets shall serve a single appliance Shutoff Valve Location. The shutoff valve shall be located within Log# 7 NFG-AAA Final Action: Accept in Principle feet of the appliance it serves. Where a connector is used, the valve shall be (8.5.1, 8.5.2, 8.5.4,..12 Appliance Connector (New),..166 Connecting installed upstream of the connector. A union or flanged connection shall be Gas Equipment) provided downstream from the valve to permit removal of appliance controls. Shutoff valves serving decorative gas appliances shall be permitted to be Submitter : James Ranfone, American Gas Association / Rep. AGA Building installed in fireplaces if listed for such use. Energy Codes and Standards (BECS) Committee Exception No. 1. Shutoff valves serving appliances installed in vented Recommendation:..12 Appliance Connector. A length of semirigid tubing fireplaces and ventless firebox enclosures are not required to be located within with end fittings, listed nonmetallic gas hose, or other suitable flexible a specified distance of the appliance where such valves are readily accessible connector as required by the code, specifically designed to connect gas and permanently identified. The piping from the shutoff valve to within 6 feet equipment to the piping system. of the appliance shall be designed, sized and installed in accordance with..166 Piping System. All piping, valves, and fittings from the outlet of the Chapters 5 and 6. point of delivery from the supplier to the outlets point of connection of the Exception No. 2. Where installed at a manifold, valves shall be located within gas equipment shutoff valves or appliance connector. 50 feet of the appliance served and shall be readily accessible and permanently Connecting Gas Equipment. identified. The piping from the manifold to within 6 feet of the appliance shall 54-16

17 be designed, sized and installed in accordance with Chapters 5 and Shutoff Valve Location for Non-Manifolded Systems shall be located within 6 feet of the appliance it serves. Where a connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from the valve to permit removal of appliance controls. Shutoff valves serving decorative gas appliances shall be permitted to be installed in fireplaces if listed for such use Shutoff Valve Location for Manifolded Systems shall be located within 50 feet of the appliance served and shall be readily accessible and permanently identified. The piping from the manifold to within 6 feet of the appliance shall be designed, sized and installed in accordance with Chapters 5 and Shutoff valves serving appliances installed in vented fireplaces and ventless firebox enclosures shall not have a minimum required to the appliance where such valves are readily accessible and permanently identified The piping from the shutoff valve to within 6 feet of the appliance shall be designed, sized and installed in accordance with Chapters 5 and 6. Committee Statement: Accepted with revisions. To permit alternative locations for equipment shutoff valves in gas piping systems and ensure that the codeʼs gas piping installation and pressure testing requirements are applied up to all parts of the gas piping system no matter where the valve is installed. The revision would only add in two exceptions, one for fireplace appliances and one for manifolds. The 50 feet requirement was based on successful experience in Canada. The proposed definition was not needed with the revisions that were made. Ballot Results: Affirmative: 24 Negative: 1 Explanation of Negative: VIRGIL: I vote negative because the proposal is indeterminate. The Committee Meeting Action includes two different sections identified as , which makes the proposal equivocal a Log# CP115 NFG-AAA Final Action: Accept (8.5.1(4)) Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise (4) to read: (4) CSST where installed in accordance with the manufacturerʼs instructions. CSST shall not pass through an appliance housing, cabinet, or casing. CSST shall connect only to appliances that are fixed in place. Substantiation: The proposed actions of (Log #9) and (Log #14) are combined into one action. CSST should not pass through a gas connector opening in an appliance casing because CSST can be damaged by sharp edges of an appliance casing and should not be subjected to high temperatures within an appliance casing. Although many appliances have flame-rollout protection, CSST may not withstand the elevated temperatures within appliance casings that could occur during abnormal operating conditions. The concept of the Proposal in (Log #9) is accepted and is revised to allow options for installers. Committee Meeting Action: Accept Revise (4) to read: (4) CSST where installed in accordance with the manufacturerʼs instructions. CSST shall not pass through an appliance housing, cabinet, or casing. Committee Statement: The proposed actions of (Log #9) and (Log #14) are combined into one action. CSST should not pass through a gas connector opening in an appliance casing because CSST can be damaged by sharp edges of an appliance casing and should not be subjected to high temperatures within an appliance casing. Although many appliances have flame-rollout protection, CSST may not withstand the elevated temperatures within appliance casings that could occur during abnormal operating conditions. The concept of the proposal in (Log #9) is accepted and is revised to allow options for insallers. Ballot Results: Affirmative: 2 Negative: 0 Ballot Not Returned: 7 BUCHAL, CAVE, DOUCETTE, HIMES, OLSON, PADGETT, RIBBS Log# 9 NFG-AAA Final Action: Accept in Principle (8.5.1(4)) 2002: The comment proposes something that could not be properly handled within the time frame for processing the report. Submitter : Hall Virgil, Carrier Corporation / Rep. GAMA-An Appliance and Equipment Manufacturers Association Recommendation: (4) CSST where installed in accordance with the manufacturerʼs instructions. Installer shall extend rigid metallic pipe 2 inches minimum outside an appliance casing to connect to CSST to prevent chafing of CSST on an edge of the gas connector opening in an appliance casing and to prevent exposure to high temperatures. Substantiation: CSST should not pass through a gas connector opening in an appliance casing because CSST can be damaged by sharp edges of an appliance casing and should not be subjected to high temperatures within an appliance casing. Although many appliances have flame-rollout protection, CSST may not withstand the elevated temperatures within appliance casings that could occur during abnormal operating conditions. Committee Meeting Action: Accept in Principle Committee Statement: See 54-75a (Log #CP115) Log# 14 NFG-AAA Final Action: Reject (8.5.1(4)) Submitter : Richard Sekerchak, Dormont Manufacturing Company Recommendation: Revise text to read as follows: 8.5.1(4) CSST where installed in accordance with the manufacturerʼs instructions, CSST is not to be used with appliances that can be moved such as ranges and dryers nor with commercial cooking appliances. Substantiation: Clarify the requirement for the appropriate use of CSST and make the Code consistent with manufacturerʼs instructions. Also, this revision will make the Code requirement consistent with the requirements of ANSI Z21.24 and ANSI Z Committee Meeting Action: Reject Committee Statement: See Proposal 54-75a (Log #CP115) Log# 1 NFG-AAA Final Action: Accept in Principle (8.5.1(6)) Submitter : Richard Sekerchak, Dormont Manufacturing Company Recommendation: Revise text to read as follows: 8.5.1(6) All Gas-fired food service ( commercial cooking appliances (ref...95 thru..101), equipped with either legs or casters, ) equipment listed for use with castors or otherwise subject to movement for cleaning, and other large and heavy gas utilization equipment that can be moved, shall be connected in accordance with the connector manufacturersʼ installation instructions using a listed appliance connector complying with ANSI Z21.69, Connectors for Movable Gas Appliances. Substantiation: Regardless if appliances are on legs or casters, commercial cooking appliances are all moved at intervals of time for cleaning, maintenance, or repair. The intervals differ depending on the type of equipment and reason for the movement. However, during the movement, the connector can and does get pulled hard axially and pushed against the wall and appliance which can easily damage an un-reinforced gas connector. Therefore, we recommend that only movable appliance connectors be permitted in commercial cooking applications to gain the benefit of the extra reinforcement afforded by its design and features. This revision will make the Code requirement consistent with the requirements of ANSI Z21.69-latest edition. The addition of the reference will provide clarity for installers on what is considered food service equipment. Committee Meeting Action: Accept in Principle (6) Gas-fired food service (commercial cooking) equipment listed for use with casters or otherwise subject to movement for cleaning, and other large and heavy gas utilization equipment that can be moved, shall be connected in accordance with the connector manufacturerʼs installation instructions using a listed appliance connector complying with ANSI Z21.69, Connectors for Movable Gas Appliances Commercial Cooking Appliances. Commercial cooking appliances that are moved for cleaning and sanitation purposes shall be connected in accordance with the connector manufacturerʼs installation instructions using a listed appliance connector complying with ANSI Z21.69, Connectors for Movable Gas Appliances. Committee Statement: Accepted with revisions to clarify the use of a Z21.69 connector with all commercial cooking appliances that can be moved for the purpose of cleaning and sanitation. Counter appliances are now included since they are often moved which can result in damage to a non-z21.69 connector. Movable large equipment is not required to use a Z21.69 connector since this equipment is less often moved and will be connected in accordance with the requirements of 8.5.1(1) through (7) Log# 11 NFG-AAA Final Action: Accept in Part (8.5.1(8)) Submitter : Richard Sekerchak, Dormont Manufacturing Company Recommendation: Add text to read as follows: (8) A listed connector in compliance with ANSI Z Standard for Connectors for Outdoor Gas Appliances and Manufactured Homes. The connector shall be used in accordance with the terms of its listing and shall be

18 completely exposed. Only one connector shall be used per appliance. Substantiation: Add Code coverage for gas connectors used with appliances that are located outdoors and specify the appropriate consensus standard for the listing. Committee Meeting Action: Accept in Part Add text to read as follows: (4) A listed connector in compliance with ANSI Z21.75, Standard for Connectors for Outdoor Gas Appliances and Manufactured Homes. Only one connector shall be used per appliance. Renumber remaining items. Committee Statement: The remainder is not accepted because it is not needed to accomplish the intent of the proposal Log# 14 NFG-AAA Final Action: Accept in Principle (8.5.4) Submitter : Larry Krummert, Columbia Gas of PA - NISOURCE / Rep. Columbia Gas of PA Recommendation: Equipment Shutoff Valves and Connections. Gas utilization equipment connected to a piping system shall have an accessible, approved manual shutoff valve with a nondisplaceable valve member, or a listed gas convenience outlet, installed within 6 ft (1.8 m) of the equipment it serves. Each gas utilization equipment shall have a valve serving the appliance only. Where a connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from this valve to permit removal of controls. Shutoff valves serving decorative gas appliances shall be permitted to be installed in fireplaces if listed for such use. Substantiation: According to you could have a valve that controls 2 appliances but still fits into Diagram provided. Committee Meeting Action: Accept in Principle Equipment Shutoff Valves and Connections. Each gas appliance connected to a piping system shall have an accessible, approved manual shutoff valve with a nondisplaceable valve member, or a listed gas convenience outlet. Appliance shutoff valves and convenience outlets shall serve a single appliance only and shall be installed in accordance with the following: The shutoff valve shall be located within 6 feet of the appliance it serves. (1) Where a connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from the valve to permit removal of appliance controls. (2) Shutoff valves serving decorative gas appliances shall be permitted to be installed in fireplaces if listed for such use Shutoff valves serving appliances installed in vented fireplaces and ventless firebox enclosures shall not be required to be located within 6 feet of the appliance where such valves are readily accessible and permanently identified. The piping from the shutoff valve to within 6 feet of the appliance shall be designed, sized and installed in accordance with Chapters 5 and Where installed at a manifold, the appliance shutoff valve shall be located within 50 feet of the appliance served and shall be readily accessible and permanently identified. The piping from the manifold to within 6 feet of the appliance shall be designed, sized and installed in accordance with Chapters 5 and 6. Committee Statement: The intent of the proposal is accomplished with an editorial revision. Ballot Results: Affirmative: 24 Negative: 1 Explanation of Negative: VIRGIL: I vote negative because the new and deleted text is not identified by underlining and strikeouts. When proposals are sent out for public review and comment, the reviewers should be provided with proposals that are easily analyzed and understood Log# 1 NFG-AAA Final Action: Reject (8.5.4) Submitter : Edward Angelone, KeySpan Energy Delivery / Rep. New York State Gas Utilization Committee Recommendation: Equipment Shutoff Valves and Connections. Gas utilization equipment connected to a piping system shall have an accessible, approved manual shutoff valve with a nondisplaceable valve member, or a listed gas convenience outlet, located and installed in accordance with one of the following: 1. installed W w ithin 6 ft. (1.8m) of the equipment it serves and readily accessible. 2. A permanently identified valve in the basement below the appliance or in an adjoining room not to exceed 50 feet from the manifold of the appliance. The valve shall be readily accessible. In addition the appliance valve should be a hand valve/ball valve that can be easily operated by the customer in an emergency without the need for a wrench. Where a connector is used, the valve shall be installed upstream of the connector. A union or flanged connection shall be provided downstream from this valve to permit removal of controls. Shutoff valves serving decorative gas appliances shall be permitted to be installed in fireplaces if listed for such use. Substantiation: To permit alternate locations for manual shut off valves in gas piping systems that are readily accessible and identified. A shutoff valve behind a cooking appliance is not readily accessible. Committee Meeting Action: Reject Committee Statement: Proposal (Log #7) was accepted in principle and would include new requirements for alternative locations of shut off valves. There was no substantiation provided to require a hand operated ball valve in manifold systems. The size of piping systems, which include the valve, is to be accomplished in accordance with Chapter 12, which includes consideration of pressures losses due to the installed valve type Log# 12 NFG-AAA Final Action: Accept (8.5.5) Submitter : Richard Sekerchak, Dormont Manufacturing Company Recommendation: Revise text to read as follows: Quick-disconnect devices used to connect equipment to the building piping shall be listed to ANSI Z21.41, Quick-Disconnect Devices for use with Gas Fuel Appliances. Where installed indoors, an approved manual shutoff valve with a nondisplaceable valve member shall be installed upstream of the quick-disconnect device. Substantiation: Make the Code requirement consistent with the other requirements such as 8.5.1() and 8.5.1(6) to assure that adequate devices are being used. Also, this revision will make the Code requirement consistent with the requirements of ASNI Z Committee Meeting Action: Accept 54-8 Log# 86 NFG-AAA Final Action: Reject (8.5.7) Submitter : Gregg Gress, International Code Council Recommendation: Sediment Trap. Where a sediment trap is not incorporated as a part of the gas utilization equipment, a sediment trap shall be installed as close to the inlet of the equipment as practical at the time of equipment installation. The sediment trap shall be either a tee fitting with a capped nipple in the bottom outlet as illustrated in Figure or other device recognized as an effective sediment trap. Illuminating appliances, ranges, clothes dryers, decorative vented appli-ances for installation in vented fireplaces, gas fireplaces, and outdoor grills shall not be required to be so equipped. Substantiation: There is no valid reason to deprive some appliances of protection from debris in the piping system. It has been argued that ranges, dryers and decorative appliances are manually operated and thus, any malfunction caused by debris would be apparent. All of these appliances can be operated for long time periods unattended, some cycling on thermostats. Common sense dictates that all appliances benefit from the basic protection afforded by the simple inexpensive sediment trap. Committee Meeting Action: Reject Committee Statement: The committee believes that the exemptions are reasonable for appliances that are not automatically operated Log# 16 NFG-AAA Final Action: Reject (8.5.7) Submitter : James P. Brewer, Magic Sweep Corp. / Rep. National Chimney Sweep Guild Recommendation: Modify the second sentence of Section as follows: The sediment trap shall be either a tee fitting with a minimum inch long capped nipple in the bottom outlet arranged to change the direction of gas flow as illustrated in figure or other device recognized as an effective sediment trap. Substantiation: Eliminates the reference to Figure and clearly states the fundamental requirements of a sediment trap. Committee Meeting Action: Reject Committee Statement: The proposal is unenforceable. Manufacturers should not be placed in a position to prohibit add on devices.

19 54-85 Log# 11 NFG-AAA Final Action: Accept (8.6.) Submitter : Robert S. Boiko, R. Boiko Corporation Recommendation: Revise text to read as follows: The electrical circuit employed for operating the automatic main gas control valve, automatic pilot, room temperature limit control, or other electrical devices used with gas utilization equipment shall be in accordance with the wiring diagrams supplied with the equipment certified or approved by the original equipment manufacturer. Substantiation: Ambiguity exists as currently written. Whoʼs diagrams? It is now very common to see after market energy devices, controllers, draft induced motors, sequencers, sensors, alarms and other components which may also be supplied with diagrams, but not checked for safety or compatibility by AGA or the original equipment manufacturer. There must be one responsible authority to assure equipment design function and integrity. Committee Meeting Action: Accept Ballot Results: Affirmative: 2 Negative: 2 Explanation of Negative: SWIECICKI: I agree with Mr. Virgilʼs reasons. VIRGIL: I vote negative because the proposed revision does not remove ambiguity. The original equipment manufacturer could be the manufacturer of the automatic gas control valve, automatic pilot, room temperature [thermostat], limit control, or other electrical devices or could be the appliance manufacturer. The original text needs no revisions except to replace the gas utilization equipment with appliances and to replace equipment with appliance as follows: 8.6. Electrical Circuit. The electrical circuit employed for operating the automatic main gas-control valve, automatic pilot, room temperature thermostat, limit control, or other electrical devices used with an appliance the gas utilization equipment shall be in accordance with the wiring diagrams supplied with the appliance equipment. Certified or approved wiring diagrams are not needed because appliance standards require appliance manufacturers to include the following items with completed appliances: wiring diagrams and a list of replacement parts with the source where parts are available. These diagrams and lists normally continue to be available from the appliance manufacturer, in case the diagrams and lists supplied with the appliances are lost. The proposed text is unacceptable for public review and comment because it fails to identify deleted text (i.e.,...room temperature thermostat, limit control... ) Log# CP140 NFG-AAA Final Action: Accept (Chapter 9) Submitter : Technical Committee on National Fuel Gas Code Recommendation: Chapter 9 Installation of Specific Equipment Appliances Application. This Chapter is applicable primarily to nonindustrial-type gas utilization equipment appliances and installations and, unless specifically indicated, does not apply to industrial -type equipment appliances and installations. Listed gas utilization equipment appliances shall be installed in accordance with their listing and the manufacturersʼ instructions, or as elsewhere specified in this part as applicable to the equipment appliance. Unlisted equipment appliances shall be installed as specified in this Chapter as applicable to the equipment appliance. For additional information concerning particular gas equipment appliances and accessories, including industrial types, reference can be made to the standards listed in Chapter 14 and Annex L * Installation in Bedroom or Bathroom. Gas utilization equipment Appliances shall not be installed Room Size in Comparison Calculation. Where the room size in comparison with the size of the equipment appliance is to be calculated, Air Conditioning Equipment Appliances (Gas-Fired Air Conditioners and Heat Pumps) Independent Gas Piping. Gas piping serving heating gas utilization equipment appliances shall be permitted to also serve cooling equipment appliances where the heating and cooling equipment appliances cannot be operated simultaneously. [See Section 5.4.] 9.2. Clearances for Indoor Installation. The installation of air-conditioning equipment appliances shall comply with the following requirements: (1) Listed air conditioning equipment appliances installed in rooms that are large in comparison with the size of the equipment appliance shall be... (2) Air-conditioning equipment appliances installed in rooms that are NOT large (such as alcoves and closets) in comparison with the size of the equipment appliance... () Unlisted air-conditioning equipment appliances shall be installed... above the equipment appliance and... (4) Air-conditioning equipment appliances (listed and unlisted) installed in rooms that are large in comparison with the size of the equipment appliance shall... provided the combustible material or equipment appliance is protected... (6) Listed air-conditioning equipment appliances shall have... Table 9.2.(a) : Revise first column and note as follows: Equipment Appliance IV Air Conditioning equipment appliances Note: See 9.2. for additional requirements for air-conditioning equipment appliances and Assembly and Installation. Air-conditioning equipment appliances shall be installed... instructions. Unless the equipment appliance is listed Furnace Plenums and Air Ducts. A furnace plenum... the air-conditioning equipment appliance shall be... Where a furnace plenum is not supplied with the equipment appliance, any fabrication... Where the air conditioner is... the size of the equipment appliance, the air circulated... casing of the equipment appliance and Switches in Electrical Supply Line. Means for interrupting the electrical supply to the air-conditioning equipment appliance and Listed central heating furnaces and... the size of the equipment appliance shall Central heating furnaces and... the size of the equipment appliance shall... Figure (1) Extent Of Protection Necessary to Reduce Clearances from Gas Equipment Appliance or Vent Connectors. Notes: A equals the clearance with... types of equipment appliances Unlisted central heating furnaces and... the size of the equipment appliance shall be Central heating furnaces and... the size of the equipment appliance shall be... the combustible material or equipment appliance is protected The clearance to this equipment appliance shall not Erection of Equipment Appliances Duct furnaces used in conjunction with a cooling equipment appliance shall be Air washers operating with chilled water that deliver air below the dew point of the ambient air at the duct furnace equipment are considered Seepage Pan. Where the excavation... provided or the equipment appliance is sealed by the manufacturer to meet this condition Food Service Equipment Appliances, Floor-Mounted Clearance for Listed Equipment Appliances. Listed floor-mounted food service equipment appliances, such as..., unit broilers, gas-fired kettles, steam cookers, steam generators,... Floor-mounted food service equipment appliances listed... Equipment Appliances designed Clearance for Unlisted Equipment Appliances. Unlisted floor-mounted food service equipment appliances shall... sides and rear of the equipment appliance and... the front of the equipment appliance. Clearances for unlisted equipment appliances installed... Clearances for unlisted equipment appliances installed Listed floor-mounted food service equipment appliances that is are listed specifically Floor-mounted food service equipment appliances that is are not listed... (1) Where the equipment appliance is set... the base of the equipment appliance or where... (2) Where the equipment appliance is set... the base of the equipment appliance, it shall... the floor under the equipment appliance is protected... The preceding specified floor... beyond the equipment appliance on all sides. () Where the equipment appliance is set... the base of the equipment appliance, it shall... the equipment appliance is protected... (4) Where the equipment appliance does not have... under the equipment appliance is protected Mounting on Noncombustible Floor. Listed floor-mounted food service equipment appliances that is are designed For Use with Casters. Floor-mounted equipment appliances with casters shall... the movement of the equipment appliance to prevent Level Installation. Floor-mounted food service equipment appliances shall be installed level on a firm foundation * Ventilation. Means shall be provided... food service equipment appliance is installed to permit proper combustion of the gas. 9.1 Food Service Equipment Appliances, Counter Gas Appliance Pressure Regulators. Where a gas appliance pressure regulator... Substantiation: Editorial, consistent terminology use. Editorial changes to Chapter 9. Also see 54-2 (Log #CP1), (Log #CP18), (Log #CP19), and (Log #CP141) for remaining revisions to chapters. The National Fuel Gas Code is sometimes inconsistent in the use of such terms as gas utilization equipment, equipment, appliance, gas-burning devices, gas-fired appliances, etc. The use of similar terms to describe gas consuming, and in some cases, non-consuming devices, and their inconsistent use in the code may confuse the code user as to which provisions apply. The main goal of this draft is to separate appliances that consume gas from equipment and systems used in gas delivery, venting, etc. and thereby improve the codeʼs precision. Committee Meeting Action: Accept

20 language should be added to clarifying what is a weather stripped door and a self closing device. Additionally direct vent sealed chamber type heating Log# 80 NFG-AAA Final Action: Accept in Principle equipment offers a higher level of protection in areas where people may be ill (Table 9.2.(b)) or sleeping. Bath exhaust systems could cause negative pressures in the bathroom and could cause back drafting. Submitter : James Ranfone, American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) Committee Recommendation: Table 9.2.(b) Reduction of Clearances with Specified Log# 89 NFG-AAA Final Action: Reject Forms of Protection (9..4) () in. (24 gauge) sheet metal over 1 in. glass fiber or mineral wool batts reinforced with wire on rear face with ventilated air space (5) in. (24 gauge) sheet metal with ventilated air space (6) 1/2 in. thick insulation board with ventilated air space (7) in. (24 gauge) sheet metal with ventilated air space over in. (24 gauge) sheet metal with ventilated air space (8) 1 in. glass fiber or mineral wool batts sandwiched between two sheets in. (24 gauge) sheet metal with ventilated air space. Substantiation: without a dimensional term inch appears to be meaningless. Also, most installers would request 24 gauge when purchasing sheet metal to meet the code requirements. Since neither the installer nor the code official is likely to physically measure the sheet metal for conformance, 24 gauge is more practical and usable. Committee Meeting Action: Accept in Principle Table 9.2.(b) Reduction of Clearances with Specified Forms of Protection () in. (nominal 24 gauge) sheet metal over 1 in. glass fiber or mineral wool batts reinforced with wire on rear face with ventilated air space (5) in. (nominal 24 gauge) sheet metal with ventilated air space (6) 1/2 in. thick insulation board with ventilated air space Submitter : Dale Watterson, Madison Gas and Electric Recommendation: 9..4 Temperature- or Pressure-Limiting Devices. Steam and hot water boilers, respectively, shall be provided with approved automatic limiting devices for shutting down the burner(s) to prevent boiler steam pressure or boiler water temperature from exceeding the maximum allowable working pressure or temperature.safety limit controls shall not be used as operating controls unless approved by the boiler manufacturer. Substantiation: Almost all residential steam boilers only have one pressure control, like the HWPA 404A, this control is a safety limit and operating control. Many small hot water boilers have only one aquastat. Committee Meeting Action: Reject Committee Statement: This subject is covered in the appliance standard. All listed residential boilers include both operating and safety controls. The safety control is the pressure limit while the operating control is the thermostat. (7) in. (nominal 24 gauge) sheet metal with ventilated air space over Log# 12 NFG-AAA Final Action: Accept in Part in. (nominal 24 gauge) sheet metal with ventilated air space ( ) (8) 1 in. glass fiber or mineral wool batts sandwiched between two sheets in. (nominal 24 gauge) sheet metal with ventilated air space. Committee Statement: The term nominal is added before 24 gauge to recognize the different gauge scales are used. Submitter : Jennifer S. Henderson, CSA America Inc. Recommendation: Exhaust ducts for unlisted Type 2 clothes dryers shall be installed with a minimum clearance of 6 in. (150 mm) from adjacent combustible material. Where exhaust ducts for Type 2 clothes dryers are installed with reduced clearances, the adjacent combustible material shall be protected in accordance with Table 9.2.(b). Exhaust ducts for listed Type 2 clothes dryers shall be installed with clearances not less than that shown on the Log# 124 NFG-AAA Final Action: Reject marking plate and in the manufacturersʼ instructions. (9..1) Substantiation: Listed Type 2 clothes dryers are tested to verify clearances Submitter : Roger Rotundo, IAPMO / Rep. Committee on Uniform Mechanical Code Recommendation: Revise text as follows to read as follows: 9..1 Location. Central heating furnace and low-pressure boiler installations in bedrooms or bathrooms shall comply with one of the following: (1) Central heating furnaces and low pressure boilers shall be installed in a closet located in the bedroom or bathroom, the closet shall have a weather stripped solid door with a self closing device, and all combustion air shall be obtained from the outdoors. (2) Central heating furnaces and low pressure boilers shall be of the direct vent type. Substantiation: Industry has noted that doors are not maintained in a closed position by removing or defeating the door closer, There is no standard for what type of weather stripping is to be used and how it is to be maintained. The new existing section has been deleted in at least one state code. There is nothing in the current language to indicate the room can not be used for storage or other uses. The current language has only been in the standard for one cycle. Committee Meeting Action: Reject to combustible materials including clearances from the exhaust ducts. These clearances are marked on the appliance and are noted in the installation instructions. Additionally, listed Type 2 clothes dryers are equipped with operating thermostats and limits to ensure that the exhaust temperatures are less than 250 F. Specifying a 6 inch clearance from single wall vent systems to combustible material on listed clothes dryers is overly restrictive. Committee Meeting Action: Accept in Part Revise to read: Exhaust ducts for unlisted Type 2 clothes dryers shall be installed with a minimum clearance of 6 in. (150 mm) from adjacent combustible material. Where exhaust ducts for Type 2 clothes dryers are installed with reduced clearances, the adjacent combustible material shall be protected in accordance with Table 9.2.(b). Committee Statement: The requirement for listed appliances is redundant to Committee Statement: The code requires the use of outdoor air for Log# CP10 NFG-AAA Final Action: Accept appliances installed in the closet. This will minimize the potential for (9.9.) inadequate combustion air and any potential for CO. There is no evidence that the code provision has caused problems. Also refer to Committee Action on (Log #125). Ballot Results: Affirmative: 22 Negative: Explanation of Negative: COLLINGS: Direct vent sealed chamber type heating equipment offers a higher level of protection in areas where people may be ill or sleeping. Bath exhaust systems could cause negative pressures in the bathroom and could cause back drafting. KOBEL: Since the TC meeting our research has revealed that there was no technical substantiation given when this requirement was added to the NFGC. The original substantiation provides reasons to reconsider this section for deletion. If this change is allowed to stand, I believe language should be added to define the requirements for a weather stripped door and a self closing device. Direct vent heating equipment offers a higher level of protection in areas where people may be ill or sleeping. Bath exhaust systems can cause negative pressures in the bathroom resulting in back drafting of toxic combustion products. RIBBS: Since the TC meeting, I have learned that there was not a true technical substantiation given for adding this requirement into the NFGC. Submitter : Technical Committee on National Fuel Gas Code Recommendation: 9.9. Installation. () Recirculating direct gas-fired industrial air heaters shall be permitted to provide fresh air ventilation only for the amount that exceeds the minimum ventilation air specified on the heaterʼs rating plate to maintain the combustion level created by the heater in the space being served by the heater below 25 ppm for carbon monoxide, ppm for nitrogen dioxide, and 5000 ppm for carbon dioxide. Where gas-powered fork trucks or other fossil fueled equipment are utilized in the conditioned space, additional ventilation requirements for the facility must be addressed separately. (4) Recirculating direct gas-fired industrial air heaters shall be provided with access for removal of burners; replacement of motors, controls, filters, and other working parts; and for adjustment and lubrication of parts requiring maintenance. Substantiation: Eliminate provisions that are included in the manufacturerʼs installation instructions. The code only allows listed products. Committee Meeting Action: Accept Additionally I feel the original substantiation gives reasons to reconsider this section for deletion. Should the existing coverage continue I feel additional Log# 75 NFG-AAA (9.9.()) Final Action: Accept in Principle 54-20

21 bathroom wall met the requirements of exceptions 1 and 2. Submitter : James Ranfone, American Gas Association / Rep. AGA Building Here are some real facts: When burning natural gas if the air fuel mixture is Energy Codes and Standards (BECS) Committee properly set and there is good ventilation the byproducts are CO2 and water; Recommendation: 9.9. Installation. harmless unless displacing too much oxygen. However the flame is blue and () Recirculating direct gas-fired industrial air heaters shall be permitted to nearly invisible. This is a far from acceptable condition for a decretive provide fresh air ventilation only for the amount that exceeds the minimum appliance. These appliances are purposely set so the flames are out of ventilation air specified on the heaterʼs rating plate to maintain the combustion adjustment which will produce CO. Also unvented room heaters can be level created by the heater in the space being served by the heater below effected by any number of conditions including altitude that can cause any of 25 ppm for carbon monoxide, ppm for nitrogen dioxide, and 5000 ppm these appliances to produce CO. for carbon dioxide. Where gas-powered fork trucks or other fossil fueled equipment are utilized in the conditioned space, additional ventilation requirements for the facility must be addressed separately. Substantiation: The local enforcing authority is not equipped for, nor is typically expected to, perform indoor air sampling and therefore the code provision is unenforceable. Committee Meeting Action: Accept in Principle Committee Statement: Refer to (Log #CP10) which eliminates () in its entirety Log# 71 NFG-AAA Final Action: Reject ( (), ()) Submitter : Joseph A. Peluso Jr., Commonwealth of Massachusetts / Rep. Massachusetts State Plumbing & Gas Fitters Board Recommendation: Vertical Clearance. Built-in top (or surface) cooking appliances shall have a vertical clearance above the cooking top of not less than 0 in. (760 mm) to combustible material or metal cabinets. A minimum clearance of 24 in. (610 mm) is permitted when one of the following is installed: () A listed cooking appliance or microwave oven is installed over a listed cooking appliance a minimum clearance of 24 in. (610 mm) shall be maintained and will conform to the terms of the upper applianceʼs listing and the manufacturerʼs instructions. Substantiation: Consistency in minimum 24 in. clearance requirement above cook tops. Committee Meeting Action: Reject Committee Statement: This is a fire safety issue, and the committee believes that the current text provides adequate fire protection Log# 0 NFG-AAA Final Action: Reject (9.2, 9.6.1) Submitter : Kevin K. Kearns, Peoples Energy Recommendation: 9.6.1* Prohibited Installations. Decorative appliances for installation in vented fireplaces shall not be installed in bathrooms or bedrooms unless the appliance is listed and the bedroom or bathroom has the required volume in accordance with Section Unvented gas fireplaces shall not be install in bathrooms or bedrooms. Refer to part 9.2 for details and exceptions. 9.2 Room Heaters and Unvented Gas Fireplaces 9.2.1* Prohibited Installations. Unvented room heaters a nd unvented gas fireplaces shall not be installed in bathrooms or bedrooms Installations in Institutions. Room heaters and unvented gas fireplaces shall not be installed in the following occupancies: 9.2. Clearance. A room heater a nd unvented gas fireplaces shall be placed so as not to cause a hazard to walls, floors, curtains, furniture, doors when open, and so on, and to the free movements of persons within the room. Room H h eaters a nd unvented gas fireplaces designed and marked For use in noncombustible fireplace only shall not be installed elsewhere. Listed room heaters a nd unvented gas fireplaces shall be installed in accordance with their listings and the manufacturersʼ instructions. In no case shall the clearances be such as to interfere with combustion air and accessibility. Unlisted room heaters a nd unvented gas fireplaces shall be installed with clearances from combustible material not less than the following: Substantiation: Currently, Peoples Energy and the City of Chicago utilize the rules for room heaters (2002 edition, page 54-5, Section 9.2) and apply them to ventless gas fireplaces. Committee Meeting Action: Reject Committee Statement: The proposal is well intentioned, but the subject is covered in the Code. All vent free fireplace type room heaters are design certified to ANSI Z Unvented gas fireplaces and gas logs in bedrooms and bathrooms are not wall mounted and therefore are prohibited by Ballot Results: Affirmative: 24 Negative: 1 Explanation of Negative: COLLINGS: I feel the proponentʼs code change adds clarity. It would be easy to argue that a listed unvented fireplace installed in the center of a bedroom or Log# 96 NFG-AAA Final Action: Reject (9.2, K.1.8, K.1.9, K.1.44) Submitter : Roger Rotundo, IAPMO Recommendation: 9.2 Room Heaters * Prohibited Installations. Unvented room heaters shall not be installed, used, maintained or permitted to exist in any residential occupancy whether new or as a replacement installation in bathrooms or bedrooms. Exception No. 1: Where approved by the authority having jurisdiction, one listed wall-mounted unvented room heater equipped with an oxygen depletion safety shutoff system shall be permitted to be installed in a bathroom provided that the input rating shall not exceed 6,000 Btu/hr (1760 W/hr) and combustion and ventilation air is provided as specified in Exception No. 2: Where approved by the authority having jurisdiction, one listed wall-mounted unvented room heater equipped with an oxygen depletion safety shutoff system shall be permitted to be installed in a bedroom provided that the input rating shall not exceed 10,000 Btu/hr (290 W/hr) and combustion and ventilation air is provided as specified in K.1.8 Room Heater, Unvented Circulator. A room heater designed to convert the energy in fuel gas to convected and radiant heat by direct mixing of air to be heated with the combustion products and excess air inside the jacket. K.1.9 Room Heater, Unvented Closed Front, Wall Heater. An unvented circulator having a closed front, for insertion in or attachment to a wall or partition. K.1.44 Room Heater, Wall Heater, Unvented Closed Front. An unvented circulator having a closed front, for in-sertion in or attachment to a wall or partition. Substantiation: The Uniform Plumbing Code (UPC) prohibits the installation of unvented room heaters. The proposed deletion of the unvented heater provisions and the addition of the prohibition language in the NFGC would coordinate the coverage between the UPC and NFGC. Additionally, 1. Proposal provides additional life safety requirements for residential occupancies. Consumer Product Safety Commission Report (Oct 2000) identifies 15 deaths associated with CO poisoning due to fuel heating systems. 2. Current NFPA requirements recognize and limit these appliances for uses in bedrooms and bathrooms. In reality all areas of residential occupancies are used in the same manner. Example: Family rooms are used for guest sleeping, slumber parties, etc. Since NFPA recognizes that there is a life safety issue for bedrooms and bathrooms, these same life, safety issues apply to the entire residence.. Any exception can be handled by the AHJ in accordance with NFPA 54, Section The UNIFORM MECHANICAL CODE (UMC) prohibits the installation of unvented room heaters. The proposed deletion of the unvented heater provisions and the addition of the prohibition language in the NFGC would coordinate the coverage between the UMC and the NFGC. Annex K These definitions should also be deleted because they are not applicable to the current code. Committee Meeting Action: Reject Committee Statement: The products are listed to an ANSI standard that addresses the safety of the appliances. Since 1980, unvented appliances have been required to have an oxygen depletion safety system (ODS). The 2-year history of vent free room heaters has shown the appliances to be safe. 15- million units have been installed in the 20 years since ODS has been required. The committee is advised that communication with CPSC staff reports that no deaths have been connected to vent free heaters equipped with an ODS. The National Fuel Gas Code has addressed the safe installation of unvented heaters for 0 years. Ballot Results: Affirmative: 19 Negative: 5 Abstain: 1 Explanation of Negative: COLLINGS: I agree with the proponents comments and reasoning. Reports on CO poisoning and deaths from fuel burning appliances does not necessarily indicate whether or not the appliances were vented. I have entered several different rooms that contained unvented fireplaces or room heaters. Each time I experienced two things. First I noticed the smell and second I begin feeling lightheaded and with extended exposure I begin to get a headache. Although not scientific the effects are real. Here are some real facts: When burning natural gas if the air fuel mixture is properly set and there is good ventilation the byproducts are CO2 and water; harmless unless displacing too much oxygen. However the flame is blue and nearly invisible. This is a far from acceptable condition for a decretive

22 appliance. These appliances are purposely set so the flames are out of adjustment which will produce CO. Also unvented room heaters can be effected by any number of conditions including altitude that can cause any of these appliances to produce CO. EDGAR: Having mixed feelings on the subject, especially in northern climate areas, and now reading Mr. Hagensenʼs reasons for voting negative on Proposal (Log #96), Iʼd like to change my vote to negative. HAGENSEN: Although I understand some of the committeeʼs reasons for rejecting the proposal, Iʼm concerned about the proposed committee action. Inquiries made in Europe indicate that permanently installed unvented room heaters are not allowed in several European countries. They are not considered safe and the Oxygen Depletion Sensors (ODS) are not meeting safety requirements in terms of reliability. This concerns me as I have attended presentations by the vent-free fireplace manufacturers stating the ODSʼ are supplied by European companies, are completely safe and are used all over Europe. This does not appear to be true statements and indicate either lack of knowledge or an attempt to misguide. During a presentation the GAMA Vent-Free Product Division representative stated that there had been no deaths, lawsuits or anything else that could indicate any safety problems with unvented room heaters. However, a discussion with a fireplace manufacturer (not vent-free) indicated that manufacturers of unvented fireplaces have settled cases out of court to avoid unwanted exposure. Based on the information available I can not support the committeeʼs action and believe more information is needed. KOBEL: I agree with the proponents substantiation under items 2, and 4. If these installations continue to be allowed I believe additional requirements must be added. These additional requirements should include dedicated makeup air and a hardwired carbon monoxide detector located in the room where the unvented heater is used. RIBBS: I stand on the original substantiation items 2,, 4. Additionally should these installations continue there should be additional provisions for dedicated makeup air and provisions for a hardwired carbon monoxide detector located in the room where the unvented heater is used. Explanation of Abstention: VIRGIL: I vote abstain because I do not have enough experience with unvented appliances Log# 125 NFG-AAA Final Action: Reject ( ) Submitter : Terry Swisher, IAPMO / Rep. Committee on Uniform Plumbing Code Recommendation: Revise text to read as follows: Water heater installations in bedrooms and bathrooms shall comply with one of the following: (1) Water heater shall be installed in a closet equipped with a weather stripped door with a self closing device, and all combustion air shall be obtained from the outdoors in accordance with 8... (2) Water heater shall be of the direct vent type. Substantiation: Industry has noted that doors are not maintained in a closed position by removing or defeating the door closer, There is no standard for what type of weather stripping is to be used and how it is to be maintained. The new existing section has been deleted in at least one state code. There is nothing in the current language to indicate the room can not be used for storage or other uses. The current language has only been in the standard for one cycle. Committee Meeting Action: Reject Committee Statement: The code requires the use of outdoor air for appliances installed in the closet. This will minimize the potential for inadequate combustion air and any potential for CO. The is no evidence that the code provision has caused problems. Also refer to (Log #124). Ballot Results: Affirmative: 22 Negative: Explanation of Negative: COLLINGS: Bathroom exhaust fans can create negative pressures causing the water heater to back draft. Direct vent systems provide a higher level of safety. KOBEL: See my Explanation of Negative on (Log #124). RIBBS: Since the TC meeting, I have learned that there was not a true technical substantiation given for adding this requirement into the NFGC. Additionally I feel the original substantiation gives reasons to reconsider this section for deletion. Should the existing coverage continue I feel additional language should be added to clarifying what is a weather stripped door and a self closing device. Additionally bathroom exhaust fans can create negative pressures causing the water heater to back draft. Direct vent systems provide a higher level of safety Log# 90 NFG-AAA Final Action: Reject ( (1)) Submitter : Dale Watterson, Madison Gas and Electric Recommendation: Water heater installations in bedrooms and bathrooms shall comply with one of the following: (1) Water heater shall be installed in a closet equipped with a weather-stripped door with a self-closing device, and all combustion and dilution air shall be obtained from the outdoors in accordance with 8... Substantiation: Besides combustion air power vent (non direct vent) water heaters mix a large amount of dilution air to lower vent temperature so PVC venting may be used. Committee Meeting Action: Reject Committee Statement: This is covered in Log# 91 NFG-AAA Final Action: Reject ( ) Submitter : Dale Watterson, Madison Gas and Electric Recommendation: Water heaters of other than the direct-vent type shall be located as close as practical to the chimney or gas vent or vented in accordance with manufacturerʼs instructions. Substantiation: New power vent water heaters use inside air for combustion but use dedicated PVC vents rather than connecting to a chimney or other gas vent. Committee Meeting Action: Reject Committee Statement: The paragraph is deleted in (Log #CP117) Log# CP117 NFG-AAA Final Action: Accept ( ) Submitter : Technical Committee on National Fuel Gas Code Recommendation: Delete Water heaters of other than the direct-vent type shall be located as close as practical to the chimney or gas vent. Substantiation: The requirement is not enforceable. Committee Meeting Action: Accept Log# CP116 NFG-AAA Final Action: Accept (9.28.7) Submitter : Technical Committee on National Fuel Gas Code Recommendation: Delete section and Figure Circulating Tank Types Connection to Tank. The method of connecting the circulating water heater to the tank shall provide proper circulation of water through the heater and permit a safe and useful temperature of water to be drawn from the tank. [See Figure ] Figure Typical gravity circulating tank-type installation Size of Water Circulating Piping. The size of the water circulating piping shall conform with the size of the water connections of the heater Sediment Drain. A suitable water valve or cock, through which sediment can be drawn off or the tank emp-tied, shall be installed at the bottom of the tank. Substantiation: This is a plumbing item and should not be in the National Fuel Gas Code Committee Meeting Action: Accept Log# CP141 NFG-AAA Final Action: Accept (Chapter 10) Submitter : Technical Committee on National Fuel Gas Code Recommendation: Chapter 10 Venting of Equipment Appliances 10.1 General. This chapter recognizes that... characteristics of the gas utilization equipment appliance. The operating characteristics of vented gas utilization equipment appliance can be categorized... whether or not the equipment appliance generates flue Connection to Venting Systems. Except as permitted in through , all gas utilization equipment appliances shall be connected to venting systems Equipment Appliances Not Required to be Vented. The following equipment appliances shall not be required to be vented: (5) A single listed booster-type... provided that the equipment appliance is installed... any surface other than the equipment appliance. (10) Other equipment appliances listed for unvented use and not provided with flue collars (11) Specialized equipment appliances of limited input such as laboratory

23 burners or gas lights Where any or all of this equipment these appliances in... the remaining unvented equipment appliances does not exceed... Where the calculation includes... space in which the equipment appliance is installed * Ventilating Hoods. Ventilating hoods... used to vent gas utilization equipment appliances installed in... to vent industrial equipment appliances, particularly Well-Ventilated Spaces. The operation of industrial gas utilization equipment appliances such that Direct-Vent Equipment Appliances. Listed direct-vent gas utilization equipment appliances shall be considered Equipment Appliances with Integral Vents. Gas utilization equipment Appliances incorporating integral venting means Equipment Appliance Draft Requirements. A venting system shall satisfy the draft requirements of the equipment appliance in accordance Design and Construction. Gas utilization equipment Appliances required to be Gas utilization equipment Appliances requiring venting shall Vent connectors serving equipment appliances vented by natural Where a mechanical draft system is... requirements of the equipment appliance for safe performance Ventilating hoods and... used to vent gas utilization equipment appliances installed in Where automatically operated gas utilization equipment is appliances are vented through... to properly vent the equipment appliance and when... Table Type of Venting System to Be Used. REVISE TABLE ENTRIES AS FOLLOWS: Gas Utilization Equipment Appliances Listed Category I equipment appliances Listed equipment appliances equipped with draft hoods Equipment Appliances listed or use with Type B gas vents Special Gas Vent listed for this equipment these appliances [10.4.] Category II equipment appliances Category III equipment appliances Category IV equipment appliances As specified or furnished by manufacturers of listed equipment appliances [10.4.2, 10.4.] Equipment Appliances that can be converted to use of solid fuel Unlisted combination gas and oil-burning equipment appliances Combination gas- and solid-fuel-burning equipment appliances Equipment Appliances listed for use with chimneys only Unlisted equipment appliances Listed combination gas and oil-burning equipment appliances Direct vent equipment appliances Equipment Appliances with integral vent Plastic Piping. Plastic piping used for venting equipment appliances listed for * Exception: Masonry chimney flues...use with listed gas appliances with draft hoods, Category I appliances, and other gas appliances A chimney for residential-type or low-heat gas utilization equipment appliances shall extend A chimney for medium-heat equipment appliances shall extend A chimney shall extend... connected equipment appliance draft hood The effective area of a chimney venting system serving listed gas appliances Where an incinerator is vented by a chimney serving other gas utilization equipment appliances, the gas When inspection reveals that... be suitable for the equipment appliances to be attached Gas utilization equipment An appliance shall not be Where one chimney serves gas utilization equipment appliances and equipment burning liquid fuel burning appliances, the equipment appliances shall... Where the gas utilization equipment appliance is automatically controlled, it shall be equipped with a safety shutoff device Exception: Direct vent gas-fired appliances designed... Figure Typical Termination Locations for Chimneys and Single-Wall Metal Pipes Serving Residential-Type and Low-Heat Equipment Appliances Gas Vent Termination. (b) Industrial gas utilization equipment appliances as provided in (d) Equipment Appliances with integral vents as provided in (2) A Type B or a Type L gas vent shall... the highest connected equipment appliance draft hood Size of Gas Vents. Venting systems shall... the gas vent and gas equipment appliance manufacturersʼ instructions Category II, Category III, and Category IV Appliances. The sizing of gas vents for Category II, Category III, and Category IV gas utilization equipment appliances shall be in accordance with the equipment appliance manufacturersʼ instructions Gas Vents Serving Equipment Appliances on More Than One Floor A single or common gas vent shall... to vent Category I gas utilization equipment appliances located All gas utilization equipment appliances connected to The size of the connectors... for gas utilization equipment appliances listed (2) The size of the connector... from its gas utilization equipment t he applianceʼs gas heat input rate and... () The size of the common... the total gas utilization equipment applianceʼs gas heat input rate entering Cold Climate. Uninsulated single-wall metal... for venting gas utilization equipment appliances Termination. (1) Single-wall metal pipe... connected equipment appliance draft hood outlet or flue collar Installation with Equipment Appliances Permitted by Single-wall metal pipe... which the gas utilization equipment appliance is located... Table Clearances for Connectors Equipment Appliance : REVISE TABLE ENTRIES AS FOLLOWS: Listed equipment appliance with draft hoods and equipment appliance listed for use with Type B Gas Vents Residential and low-heat equipment appliances other than those above Medium-heat equipment appliance Size of Single-Wall Metal Pipe. (1)* A venting system of a single-wall metal pipe... and the gas equipment appliance manufacturerʼs instructions: Provision shall be made... serving Category II and Category IV gas utilization equipment appliances and Where local experience indicates... serving Category I and Category III gas utilization equipment appliances in accordance Vent Connectors for Category I Gas Utilization Equipment Appliances Where Required. A vent connector... to connect gas utilization equipment an appliance to a gas vent, chimney,... directly connected to the equipment appliance A vent connector shall be made... produced by the gas utilization equipment appliance and of Where the vent connector used for gas utilization equipment an appliance having a Where the vent connector used for gas utilization equipment an appliance having a (1) Vent Connectors not Installed in Attics, Crawl Spaces, or Other Unconditioned Areas. Vent connectors for listed gas appliances A vent connector for a low-heat equipment appliance shall be a factory-built chimney section or steel pipe having resistance to heat and corrosion equivalent to that for the appropriate galvanized pipe as specified in Table Factory-built chimney sections shall be joined together in accordance with the chimney manufacturerʼs instructions Vent connectors for medium-heat equipment appliances and... (1) A steel vent connector for equipment an appliance with... Table Minimum Thickness for Steel Vent Connectors for Medium- Heat Equipment Appliances and Commercial and Industrial Incinerators A vent connector for gas utilization equipment an appliance with a single draft hood Where two or more gas appliances are Where two or more gas appliances are Where the size of a... equal to the equipment appliance input, the size increase shall be made at the equipment appliance draft hood outlet A vent connector shall be as short as practical and the gas utilization equipment appliance located as Exception: Vent connectors made... serving listed equipment appliances with draft hoods and other equipment appliances listed for Vent connectors for medium-heat equipment appliances shall Vent Connectors for Category II, Category III, and Category IV Gas Utilization Equipment Appliances Equipment Appliances Requiring Draft Hoods. Vented gas utilization equipment appliances shall be installed with draft hoods. Exception: Dual oven-type..., direct-vent equipment appliances, fan-assisted combustion system appliances, equipment appliances requiring... appliances equipped... and equipment appliances designed for forced venting Installation. A draft hood supplied... part of a listed vented gas utilization equipment appliance shall... specified by the equipment appliance manufacturer If a draft hood is not supplied by the equipment appliance manufacturer... as the equipment appliance flue collar Where it is determined that... recommendations of the equipment appliance manufacturer Draft Control Devices. Where a draft control device is part of the gas utilization equipment appliance or is supplied by the equipment appliance manufacturer, it shall... In the absence of manufacturerʼs instructions... the equipment appliance or as near to the equipment appliance as practical * Additional Devices. Gas utilization equipment Appliances (except incinerators) requiring... equipped with a listed double-acting barometric draft regulator s installed and adjusted in accordance with the manufacturerʼs manufacturers ʼ instructions Location. Draft hoods and barometric draft regulators... as the equipment appliance in such Positioning. Draft hoods and draft regulators... by any part of the equipment appliance or adjacent construction. The equipment appliance and Clearance. A draft hood shall... that of the equipment appliance it serves and... Where a greater or lesser clearance is indicated on the equipment

24 appliance label Manually Operated Dampers. A manually operated damper shall not be Explanation of Negative: placed in any equipment appliance vent... COLLINGS: I agree with the proponent. Industrial applications do not Obstructions. 5) Approved economizers... systems of equipment necessarily mean all areas are large and well ventilated. I have seen office appliances not required... provided the gas utilization equipment appliance space built inside a warehouse and also a manufacturing plant complete with manufacturerʼs... roof and roof top units for heating and a/c. Ventilation conditions change Substantiation: Editorial, consistent terminology use. Editorial changes to considerably from summer to winter. Summer doors are open and fans are Chapter 10. Also see 54-2 (Log #CP1), (Log #CP18), (Log running. In the winter the place is closed up to keep warm. Further there is #CP19), and (Log #CP140), for remaining revisions to chapters. quite a history of people in these types of work places being exposed to various The National Fuel Gas Code is sometimes inconsistent in the use of such terms chemical and environmental elements that later have been found to cause them as gas utilization equipment, equipment, appliance, gas-burning considerable harm. Generally the employees are unaware of their exposure. devices, gas-fired appliances, etc. The use of similar terms to describe gas consuming, and in some cases, non-consuming devices, and their inconsistent use in the code may confuse the code user as to which provisions apply. The main goal of this draft is to separate appliances that consume gas from equipment and systems used in gas delivery, venting, etc. and thereby improve the codeʼs precision. Committee Meeting Action: Accept Comment on Affirmative VIRGIL: I vote affirmative, with editorial comments. Revise by adding and s to appliance for consistency plural/singular tense. Revise Table , Listed equipment appliances -equipped with draft hood s for consistency plural/singular tense. Revise Table , Equipment Appliances -with integral vent s for consistency plural/singular tense. Revise (2) as follows,... applianceʼs gas heat rate input rate and... for correct terminology. Revise () as follows,... applianceʼs gas heat rate input rate entering... for correct terminology a Log# CP101 NFG-AAA Final Action: Accept (10.1, , 10..1, , , ) Submitter : Technical Committee on National Fuel Gas Code Recommendation: 10.1 Minimum Safe Performance. A venting system shall be designed and constructed so as to develop a positive flow adequate to remove convey flue or vent gases to the outdoors Minimum Safe Performance. A venting system shall be designed and constructed so as to develop a positive flow adequate to remove flue or vent gases to the outside atmosphere. Substantiation: that is general in nature is relocated to the actual General section Committee Meeting Action: Accept Ballot Results: Affirmative: 2 Ballot Not Returned: 7 BUCHAL, CAVE, DOUCETTE, HIMES, OLSON, PADGETT, AND RIBBS Log# 87 NFG-AAA Final Action: Reject (10.2.4) Submitter : René M. Beliveau, City of Golden Building Division / Rep. Colorado Association of Plumbing and Mechanical Officials Recommendation: Well-Ventilated Spaces. The operation of industrial gas utilization equipment such that its flue gases are dis-charged directly into a large and well-ventilated space shall be permitted. Substantiation: There is presently no definition of large and well-ventilated space within the code. This type of language serves no purpose other than to create confusion as to what appliances may or may not be vented into a space that may or may not be large enough to dilute products of combustion to a safe level. All appliances shall be vented according to their respective manufacturerʼs installation instructions. This code section suggests that a gas appliance requiring venting, in accordance with its listing, may not have to be vented if the installer or inspector thinks the space is large and wellventilated. Not only would this situation violate the listings, it could become potentially dangerous to occupants. This section is inappropriate without providing a proven and tested methodology to actually calculate and logically arrive at such a determination. Committee Meeting Action: Reject Committee Statement: The term large well ventilated spaces applies only in industrial occupancies where ventilation exists. The paragraph is needed for industrial applications. The committee recognizes that material would be very useful for enforcers and invites comments. Ballot Results: Affirmative: 24 Negative: Log# 5 NFG-AAA Final Action: Accept in Principle (10.2.5) Submitter : Gregg Gress, Glen Edgar, International Code Council Recommendation: Direct-Vent Equipment. Listed direct-vent gas utilization equipment shall be considered properly vented where installed in accordance with the terms of its listing, the manufacturerʼs instructions, and , and Substantiation: With respect to the requirements of sections and , there is no reason to treat direct-vent appliances differently. Sections and would apply to a category IV furnace installed without an outdoor air intake but would not apply when the same appliance is installed as a direct-vent appliance. Committee Meeting Action: Accept in Principle Direct-Vent Equipment. Listed direct-vent gas utilization equipment shall be considered properly vented where installed in accordance with the terms of its listing, the manufacturerʼs instructions, and Committee Statement: Accepted with a change to refer to all of Ballot Results: Affirmative: 24 Negative: 1 Explanation of Negative: VIRGIL: I vote negative because Section is the only section in 10.8 that applies to direct-vent appliances. Section applies to a mechanical draft venting system, not a direct-vent appliance. See..27 Venting System, Mechanical Draft. A venting system designed to remove flue or vent gases by mechanical means, which may consist of an induced draft portion under nonpositive static pressure or a forced draft portion under positive static pressure. A mechanical draft venting system is a venting system, not an appliance. Section applies to a mechanical draft venting system, of other than direct-vent type. Section applies to Through-the-wall vents for Category II and Category IV appliances and noncategorized appliances.... Categorization does not determine whether an appliance is or is not a direct-vent appliance. Section does not apply to Category II and IV appliances that are not direct-vent appliances. So, should not be added to the requirements for section Direct-Vent Appliances. Section will automatically apply to direct-vent appliances, if the appliances are Category II or Category IV appliances. The Committee Meeting Action does not properly identify deleted text (i.e., ) as it should Log# 104 NFG-AAA Final Action: Reject (10..6) NOTE: This Proposal appeared as Comment (Log #5) which was held from the A2002 ROC on Proposal Submitter : James P. Brewer, Magic Sweep Corp. / Rep. National Chimney Sweep Guild Recommendation: Revise text to read as follows: Circulating Air Ducts and Furnace Plenums. No portion of a venting system shall extend into or pass through any circulating air duct or furnace plenum Above Ceiling Spaces. Where venting systems pass through a space above a ceiling used as a return air plenum it shall be installed according to one of the following methods: 1. With joints within the above ceiling return air plenum sealed air-tight in a manner approved by the manufacturer of the venting system. 2. The venting system shall be a listed positive-pressure venting system.. Non-air-tight venting systems installed with no joints or fittings located within the above ceiling return air plenum. Substantiation: This modification will provide guidance for the installation of venting systems in above ceiling return air plenums. The intent of the new requirements is to identify qualities or properties of venting systems that would allow them to be safely installed in above ceiling return air plenums. Committee Meeting Action: Reject Committee Statement: (Log #108) is accepted.

25 . The third vent system installation option within above-ceiling spaces (venting system installed in an airtight conduit or enclosure with joints between the interior of the enclosure and the plenum sealed) is more acceptable because the circulating air is not directly exposed to the vent system. Comment on Affirmative EDGAR: Proposed indicates: The venting system shall be a listed Special Gas Vent, other system serving a Category III or Category IV appliance, or other positive pressure vent, with joints sealed in accordance with the appliance or vent manufacturersʼ instructions. It is unclear whether the term listed applies to all or just the first (Special Gas Vent) option. It should apply to all. In order to confirm same and clarify this issue, it is recommended to insert the term listed at two additional places in this clause as follows: The venting system shall be a listed Special Gas Vent, other system listed as appropriate for serving a Category III or Category IV appliance or other listed positive pressure vent, with joints sealed in accordance with the appliance or vent manufacturersʼ instructions. This should reduce the likelihood of misinterpretation Log# 108 NFG-AAA Final Action: Accept in Principle ( (New) ) NOTE: This Proposal appeared as Comment (Log # 122) which was held from the A2002 ROC on Proposal Submitter : David S. Johnston, Washington Gas Recommendation: Revise text to read as follows: 7..6 Circulating Air Ducts and Furnace Plenums. No portion of a venting system shall extend into or pass through any circulating air duct or furnace plenum Above-Ceiling Return Air Plenums. Where a venting system passes through an above-ceiling return air plenum or other non-ducted portion of a return air system, it shall conform to one of the following requirements: 1) The venting system shall be a listed Special Gas Vent or other system serving a Category III or Category IV appliance, with joints fully sealed in accordance with the appliance and vent manufacturersʼ instructions. 2) Sections of piping shall be inherently sealed and installed such that no fittings or joints between sections are installed in the above-ceiling plenum. ) The venting system shall be installed in an airtight conduit or enclosure with joints between the interior of the enclosure and the plenum sealed. Substantiation: The committee action to make a distinction between plenums in general and furnace plenums is welcome. The changes made to most sections of the code that use the word plenum by committee proposal 195 are also appropriate, since those sections clearly pertain to furnace plenums. However, the issue is more complex with section This section previously excluded venting systems from all types of plenums, including those that are formed by portions of the building structure. This is consistent with the broad understanding of the word plenum and its application in many other codes. (For instance, plenum cable wiring conforms to special requirements applicable to installations in air circulation systems, including building-space plenums.) The committeeʼs revised wording for 7..6 is certainly correct, as vents should clearly not be installed in furnace plenums or ducts. However, a means is needed to preserve the restriction on venting systems in other types of air circulation systems, especially those designed to operate under negative pressure. Because the pressure that will be present in any plenum is not limited or regulated by the code, there is no way of ensuring that a return air system would not draw combustion products through any unsealed portions of a venting system. The proposed additional paragraph is designed to permit venting systems that can be expected to be well enough sealed to prevent leakage of combustion products even if exposed to depressurized surroundings. The proposal would also permit non-sealed venting systems to pass through plenums if separated from the atmosphere of the plenum by a conduit or other enclosure. These options should provide a commonsense means of permitting nearly any venting system to run through areas such as above-ceiling plenums without creating an undue risk of hazard. Committee Meeting Action: Accept in Principle Revise text to read as follows: Circulating Air Ducts, Above-Ceiling Air Handling Spaces, and Furnace Plenums No portion of a venting system shall extend into or pass through any circulating air duct or furnace plenum Where a venting system passes through an above-ceiling air space or other non-ducted portion of an air handling system, it shall conform to one of the following requirements: 1) The venting system shall be a listed Special Gas Vent, other system serving a Category III or Category IV appliance, or other positive pressure vent, with joints sealed in accordance with the appliance or vent manufacturersʼ instructions. 2) The vent system shall be installed such that no fittings or joints between sections are installed in the above-ceiling space. ) The venting system shall be installed in a conduit or enclosure with joints between the interior of the enclosure and the ceiling space sealed. Committee Statement: Accepted with editorial revisions for clarity. Ballot Results: Affirmative: 24 Negative: 1 Explanation of Negative: VIRGIL: I vote negative because: 1. Special Gas Vents (high temperature plastic vent) or other systems serving Category III appliances with joints sealed in accordance with the appliance or vent manufacturerʼs instructions have failed (leaked) in field applications, which were the subject of vent system recalls by vent and appliance manufacturers. Vent joints could leak within an above-ceiling air space or other non-ducted portion of an air handling system. 2. Vent systems installed such that no fittings or joints between sections have failed (leaked) in field applications, which were the subject of vent system recalls by vent and appliance manufacturers. Vent pipes that are installed with no fittings or joints within an above-ceiling air space or other non-ducted portion of an air handling system Log# 4 NFG-AAA Final Action: Accept ( Exception) Submitter : Gregg Gress, Glen Edgar, International Code Council Recommendation: Chimneys shall be lined in accordance with NFPA 211, Standard for Chimneys, Fireplaces, Vents and Solid Fuel-Burning Appliances. Exception: Existing chimneys shall be permitted to have their use continued when an appliance is replaced by an appliance of similar type, input rating, and efficiency. Substantiation: Allowing a new appliance to connect to an unlined chimney is in conflict with the appliance listing. For example, Z21.47/CSA 2. requires the furnace installation instructions to state: Venting (Category I) into an unlined masonry chimney is prohibited. This is a clear violation of the appliance listing. Committee Meeting Action: Accept Ballot Results: Affirmative: 2 Negative: 2 Explanation of Negative: ANGELONE: I feel the exception is needed and justified in applications where an existing residential water heater is connected to an existing unlined chimney and needs to be replaced. In most installations the water heater may be the only gas appliance connected to the chimney and operating without any problems. Requiring the chimney to be lined, for the only reason due to the elimination of the exception appears to be unreasonable. The new replacement water heater is generally an appliance of similar type, input and efficiency. Requiring a liner creates a financial hardship, technically not justified and the only alternative is a direct vented water heater or electric water heater. WOZNIAK: The substantiation, while valid for Category I furnaces, is not valid for water heaters, which are not categorized and have no provision for installation of the vent to a lined masonry chimney as part of its listing. Requiring a liner/reliner should be encouraged if inspection of the chimney determines that it is required, but the code should grant the AHJ the prerogative to require or not require a liner for a particular installation Log# 121 NFG-AAA Final Action: Reject ( ) Submitter : John Crouch, HPBA (Hearth, Patio & Barbecue Association) Recommendation: Revise text to read as follows: The remaining space surrounding a chimney liner, gas vent, special gas vent, or plastic piping installed within a masonry, metal, or factory built chimney shall not be used to supply combustion air. Exception: Direct vent gas-fired appliances designed for installation in a solid fuel burning fireplace where installed in accordance with the listing and the manufacturerʼs instructions The remaining space surrounding a chimney liner, gas vent, special gas vent, or plastic piping installed within a masonry, metal, or factory built chimney shall not be used to supply combustion air. Exception: Direct vent gas-fired appliances designed for installation in a solid fuel burning fireplace where installed in accordance with the listing and the manufacturerʼs instructions. Substantiation: The deletion clarifies that freestanding direct vent appliances also can be installed to use an existing chimney to supply combustion air, for example, through a thimble penetration of the chimney. There is no difference in technology or performance between a freestanding appliances and a fireplace insert that would provide a rationale for different treatment of the two appliances types with regard to combustion air from the chimney. Committee Meeting Action: Reject Committee Statement: The committee does not agree freestanding appliances

26 should be allowed to use combustion air from a chimney space a Log# CP100 NFG-AAA Final Action: Accept (10.6.1) Submitter : Technical Committee on National Fuel Gas Code Recommendation: (4) Type B or and Type L vents shall extend in a generally vertical direction with offsets not exceeding 45 degrees, except that a vent system having not more than one 60-degree offset shall be permitted. Any angle greater than 45 degrees from the vertical is considered horizontal. The total horizontal distance of a vent plus the horizontal vent connector serving draft hood-equipped appliances shall not be greater than 75 percent of the vertical height of the vent. Substantiation: Editorial Committee Meeting Action: Accept Ballot Results: Affirmative: 2 Ballot Not Returned: 7 BUCHAL, CAVE, DOUCETTE, HIMES, OLSON, PADGETT, AND RIBBS Log# CP118 NFG-AAA Final Action: Accept (10.6.1, , Figure ) Submitter : Technical Committee on National Fuel Gas Code Recommendation: Delete () as follows: Application. The installation of gas vents shall comply with the following requirements: () A gas vent passing through a roof shall extend through the roof flashing, roof jack, or roof thimble and be terminated with a listed termination cap. (1) and (2) are unchanged. Revise as follows: Gas Vent Termination. The termination of gas vents shall comply with the following requirements: (1) A gas vent shall terminate in accordance with one of the following: (a) Gas vents that are 12 inches or less in size and located not less than 8 feet from a vertical wall or similar obstruction, shall terminate above the roof in accordance with Figure and Table (b) Gas vents that are over 12 inches in size or are located less than 8 feet from a vertical wall or similar obstruction, shall terminate not less than 2 feet above the highest point where they pass through the roof and not less than 2 feet above any portion of a building within 10 feet horizontally. (2) thru (5) unchanged. (6) All gas vents shall extend through the roof flashing, roof jack, or roof thimble and terminate with a listed cap or listed roof assembly. (7) A gas vent shall terminate at least ft (0.9 m) above any forced air inlet located within 10 ft (.0 m). Revise the title of Figure to read: Termination locations for gas vents with listed caps 12 in. (00 mm) or less in size at least 8 ft (2.4 m) from a vertical wall. Substantiation: Sections and are revised based on proposals log 74 and 27. The title of Figure is revised. Committee Meeting Action: Accept Comment on Affirmative VIRGIL: I vote affirmative with an editorial comment. In Substantiation, replace the second with Log# 27 NFG-AAA Final Action: Accept in Principle (10.6.1(), (1)(a)) Submitter : Gregg Gress, Glen Edgar, International Code Council Recommendation: Application. The installation of gas vents shall comply with the following requirements: () A gas vent passing through a roof shall extend through the roof flashing, roof jack, or roof thimble and be terminated with a listed termination cap Gas Vent Termination. The termination of gas vents shall comply with the following requirements: (1) A gas vent shall terminate in accordance with one of the following: (a) Above the roof surface with a listed cap or listed roof assembly. Gas vents 12 in. (00 mm) in size or smaller with listed caps shall be permitted to be terminated in accordance with Figure and Table provided they are at least 8 ft (2.4 m) from a vertical wall or similar obstruction. All other gas vents shall terminate not less than 2 ft (0.6 m) above the highest point where they pass through the roof and at least 2 ft (0.6 m) higher than any portion of a building within 10 ft (.0 m). Gas vents that are 12 inches or less in size and located not less than 8 feet from a vertical wall or similar obstruction, shall terminate above the roof in accordance with Figure and Table Gas vents that are over 12 inches in size and gas vents of any size that are located less than 8 feet from a vertical wall or similar obstruction, shall terminate not less than 2 feet above the highest point where they pass through the roof and not less than 2 feet above any portion of a building within 10 feet horizontally. All gas vents shall extend through the roof flashing, roof jack, or roof thimble and terminate with a listed cap or listed roof assembly. Substantiation: Table is not an option to which a vent is permitted to be terminated. Table specifies the minimum required termination height and is not intended to be optional. The bulk of the rewording serves to improve the language and clarify the intent. If an installer wants to install a 6 inch B- vent 2 feet above anything within 10 feet, they can still do so. Committee Meeting Action: Accept in Principle (1) and (2) are unchanged, delete () as follows: () A gas vent passing through a roof shall extend through the roof flashing, roof jack, or roof thimble and be terminated with a listed termination cap Gas Vent Termination. The termination of gas vents shall comply with the following requirements: (1) A gas vent shall terminate in accordance with one of the following: (a) Gas vents that are 12 inches or less in size and located not less than 8 feet from a vertical wall or similar obstruction, shall terminate above the roof in accordance with Figure and Table (b) Gas vents that are over 12 inches in size or are located less than 8 feet from a vertical wall or similar obstruction, shall terminate not less than 2 feet above the highest point where they pass through the roof and not less than 2 feet above any portion of a building within 10 feet horizontally. (2) thru (5) unchanged (6) All gas vents shall extend through the roof flashing, roof jack, or roof thimble and terminate with a listed cap or listed roof assembly. Committee Statement: Refer to (Log #CP118) Log# 24 NFG-AAA Final Action: Accept (10.6.1(4)) Submitter : Gregg Gress, Glen Edgar, International Code Council Recommendation: Delete (4) and add new Application. The installation of gas vents shall comply with the following requirements: (4) Type B or Type L vents shall extend in a generally vertical direction with offsets not exceeding 45 degrees, except that a vent system having not more than one 60-degree offset shall be permitted. Any angle greater than 45 degrees from the vertical is considered horizontal. The total horizontal distance of a vent plus the horizontal vent connector serving draft hood-equipped appliances shall not be greater than 75 percent of the vertical height of the vent. Exception: Systems designed and sized as provided in Chapter 1 or in accordance with other approved engineering methods Type B and Type L vents sized in accordance with item () or (4) of section shall extend in a generally vertical direction with offsets not exceeding 45 degrees, except that a vent system having not more than one 60- degree offset shall be permitted. Any angle greater than 45 degrees from the vertical is considered horizontal. The total horizontal distance of a vent plus the horizontal vent connector serving draft hood-equipped appliances shall not be greater than 75 percent of the vertical height of the vent. Substantiation: The current text appears to be applicable to all vents, despite the fact that Chapter 1 has entirely different and conflicting rules for offsets. The current text is intended for vents that are sized by the old rules still hanging on in items () and (4) of section , therefore, that is where this text belongs. The current text is only associated with items () and (4) of , not chapter 1 or engineered systems. Committee Meeting Action: Accept Ballot Results: Affirmative: 24 Negative: 1 Explanation of Negative: VIRGIL: I vote negative because (4) clearly applies to all Type B and Type L vents except vent systems designed and sized as provided in Chapter 1 or in accordance with other approved engineering methods. The Exception following (4) makes that clear. The only improvement that could be made is to revise the NFPA version of the NFGC such that the Exception is indented and moved up closer to (4) as was done in the ANSI version of the NFGC. See below for ANSI version:

27 Section covers Gas Vent Applications. Section covers Size of Gas Vents, not gas vent applications. Vent offsets and total horizontal distance of a vent are Gas Vent Application concerns, not Gas Vent Sizing concerns. Do not move the text to Make no changes to (4) or Log# 74 NFG-AAA Final Action: Accept in Principle (10.6.2) Submitter : James Ranfone, American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) Committee Recommendation: Gas Vent Termination. The termination of gas vents shall comply with the following requirements: (1) A gas vent shall terminate in accordance with one of the following: (a) Above the roof surface with a listed cap or listed roof assembly. Gas vents 12 in. (00 mm) in size or smaller with listed caps shall be permitted to be terminated in accordance with Figure and Table provided they are at least 8 ft (2.4 m) from a vertical perpendicular wall or similar obstruction. All other gas vents shall terminate not less than 2 ft (0.6 m) above the highest point where they pass through the roof and at least 2 ft (0.6 m) higher than any portion of a building within 10 ft (.0 m). A gas vent shall terminate at least ft (0.9 m) above any forced air inlet located within 10 ft (.0 m). Substantiation: The code in section requires that mechanical draft vent terminate a least ft above a forced air inlet located within 10 ft. Section was revised during the 1999 code revision cycle by adding the words mechanical draft and thus no longer applies to natural draft vents. A search of the public records on the 1999 change indicate that the change was made to correlate with an editorial clean up of figure A.10.8 and there were no committee discussions nor was a technical reason provided to exclude natural draft vent terminations. Therefore, the current code does not contain any minimum distance requirements for these natural draft vents from roof top outdoor air intakes. The revision would restore the 1996 edition requirement and apply the current mechanical draft distance requirement to natural draft vents. The word vertical is being replaced by perpendicular to clarify that the 8 foot distance does not apply to high ratio pitch roofs such as those listed in the last few entries of Table Committee Meeting Action: Accept in Principle Committee Statement: Refer to (Log #CP118). Comment on Affirmative VIRGIL: I vote affirmative with an editorial comment. In the Substantiation, revise as follows,... ft above a and forced air inlet Log# 77 NFG-AAA Final Action: Accept (Table ) Submitter : James Ranfone, American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) Committee Recommendation: Revise Table as follows: Substantiation: Editorial corrections. Slope is the correct term and Over is missing from the second line of the table. Committee Meeting Action: Accept Table Roof Pitch Slope Heights Roof pitch slope Ft H (minimum) m Flat to 6/ Over 6/12 to 7/ Over 7/12 to 8/ Over 8/12 to 9/ Over 9/12 to 10/ Over 10/12 to 11/ Over 11/12 to 12/ Over 12/12 to 14/ Over 14/12 to 16/ Over 16/12 to 18/ Over 18/12 to 20/ Over 20/12 to 21/ Log# NFG-AAA Final Action: Reject (10.6.2(1). (New) ) Submitter : Thomas Cole Recommendation: Insert new (b) and relabel (b) through (f) to (c) through (g). (b) Listed vent termination caps shall be designed to prevent the entry of water, insects, birds, small animals or other foreign material (ex. Bird Nests) that could cause blockage in the vent termination cap and or the vent system. Substantiation: The birds are entering the class B double wall vent systems and the flexible liners installed into masonry chimneys through UL approved termination caps. When the vent system is blocked with nesting material, the products of combustion canʼt be vented to the outside of the structure. The furnace will not shut off even if there is a pressure switch since the products of combustion just come out of the draft hood of the water heater. The UL approved caps need to be redesigned so that the birds can not enter the vent system. The UL idea of taking the cap off once a year to check for a nest is not a solution to the problem. Additional Substantiation Submitted: Two CPSC Incident reports, venting manufacturers literature, correspondence from UL, CPSC & homeowners, photos, newspaper articles, Committee Meeting Action: Reject Committee Statement: The subject of vent cap design is covered by UL 441. The committee recommends that UL be contacted, and reference the action on this proposal Log# 69 NFG-AAA Final Action: Accept ( ) Submitter : Gregg Gress, Glen Edgar, International Code Council Recommendation: A single or common gas vent shall be permitted in multistory installations to vent Category I gas utilization equipment located on more than one floor level, provided the venting system is designed and installed in accordance with approved engineering methods. Substantiation: If appliances on different floor levels are connected to the same vent it must be a common vent and cannot be a single vent. Single vents serve a single appliance, section and speak only of common vents.

28 Committee Meeting Action: Accept 1. Revise to read: * Cold Climate. Uninsulated single-wall metal pipe shall not be used outdoors in cold climates for venting gas utilization equipment in regions where the 99 percent winter design temperature is below 2 degrees Fahrenheit Log# CP105 NFG-AAA Final Action: Accept 2. Add a new A to read: ( ) A Data on winter design temperature can be found in Figure G.2.4 and Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise text to read as follows: A single or common gas vent shall be permitted in multistory installations to vent Category I gas utilization equipment located on more than one floor level, provided the venting system is designed and installed in the 199 edition of the ASHRAE Handbook Fundamentals. Committee Statement: Accepted with an editorial change. accordance with approved engineering methods. For the purpose of this Log# 5 NFG-AAA Final Action: Reject section, crawl spaces, basements and attics shall be considered as floor levels. Substantiation: An attic and crawl space should be considered as a floor level in multistory venting system design. Committee Meeting Action: Accept (10.8.1, , , 10.8., , Figures A & A ) 2002: The comment proposed something that could not be properly handled within the time frame for processing the 2002 edition of NFPA 54, and was held for the 2005 edition. Submitter : Drew Smith, State Industries, Inc. / Rep. State Industries, Inc. Recommendation: Revise wording in , , and to agree with proposed revisions to new Figures A and A (log #4) Log# 18 NFG-AAA Final Action: Accept Substantiation: The current Figure A.10.8 and stated clearances do not ( ) adequately reflect the three types of through-the-wall vented appliances Submitter : Kevin Croshaw, City of Logan / Rep. Utah Chapter of ICC Recommendation: All gas utilization equipment connected to the common vent shall be located in rooms separated from habitable occupiable space. Each of these rooms shall have provisions for an adequate supply of combustion, ventilation, and dilution air that is not supplied from habitable occupiable space. [See Figure ] Substantiation: This change uses the same wording that is used in the available today in the field. These are (1) direct vent, gravity type, (2) power vent, and () power direct vent. Committee Meeting Action: Reject Committee Statement: Refer to Committee Action on (Log #4). International Mechanical Code section for multistory venting. Habitable Log# 16 NFG-AAA Final Action: Reject space is defined in the International Building Code section 202 (A space in a (10.9.2) building for living, sleeping, eating or cooking. Bathrooms, toilet rooms, closets, halls, storage or utility spaces and similar areas are not considered habitable spaces.) It could be argued that the current wording would not require a separation from a hallway in a dwelling, because the hallway is not habitable space, or any number of other spaces that are not considered habitable spaces but are considered occupiable. An office is occupiable, but not considered habitable under the International Building Code. Committee Meeting Action: Accept Submitter : Carl A. Longino, County of Greenville SC / Rep. Myself Recommendation: Where local experience indicates that condensation is a problem, provision shall be made to drain off and dispose of condensate from venting systems serving Category I and Category III gas utilization equipment in accordance with An auxiliary drain pan shall be required for each condensing furnace where damage to any building component will occur as a result of stoppage in the condensate piping. Substantiation: Evaporators and cooling coils are no longer the only equipment that produce condensate. All condensing furnaces are equipped with exhaust fans with drain ports that require drains to be run to the outside. Most manufacturers of condensing furnaces recommend a pan under their equipment Log# 70 NFG-AAA Final Action: Reject However a recommendation is not enforceable. Furnace drains are equally ( ) subject to stoppage and obstructions as cooling or evaporator coils, produce the Submitter : Gregg Gress, Glen Edgar, International Code Council Recommendation: All gas utilization equipment connected to the common vent shall be located in rooms or spaces that are accessed only from the outdoors. separated from habitable space. Each of these rooms shall have provisions for an adequate supply of combustion, ventilation, and dilution air that is not supplied from habitable space. The gas utilization equipment in these rooms or spaces shall be provided with combustion air in accordance with same condensate, and damage building components in the same way. Committee Meeting Action: Reject Committee Statement: No substantiation was provided that demonstrates that a problem exists. section 8... [See Figure ] Log# 2 NFG-AAA Final Action: Accept Substantiation: Habitable is defined in building codes as excluding ( (1)) bathrooms, toilet rooms, closets, halls, storage and utility spaces and similar areas. By this definition, appliances and the multistory venting system would be allowed in such spaces, thus circumventing the intended separation requirement of this section. Occupied spaces includes bathrooms, toilet rooms, halls, etc. Committee Meeting Action: Reject Committee Statement: The proposed change makes the Code significantly more restrictive with no substantiation. Submitter : Gregg Gress, Glen Edgar, International Code Council Recommendation: Vent connectors for residential-type appliances shall comply with the following: (1) Vent Connectors not Installed in Attics, Crawl Spaces, or Other Unconditioned Areas. Vent connectors for listed gas appliances having draft hoods, and for appliances having draft hoods and equipped with listed conversion burners, and Category I appliances that are not installed in attics, crawl spaces, or other unconditioned areas shall be one of the following: Substantiation: The code is silent on materials for connectors for non draft hood-equipped appliances Log# 18 NFG-AAA Final Action: Accept in Principle Committee Meeting Action: Accept (10.7.2) Submitter : James P. Brewer, Magic Sweep Corp. / Rep. National Chimney Sweep Guild Recommendation: Revise text to read as follows: Log# CP120 NFG-AAA Final Action: Accept Cold Climate. Uninsulated single-wall metal pipe shall not be used ( ) outdoors in cold climates for venting gas utilization equipment in areas where the 99 percent winter design temperature is below 2 degrees fahrenheit. Substantiation: The current criteria cold climates is undefined and unenforceable. The proposed criteria of 2 degrees will prohibit single-wall pipe in most areas but still allow it in warm climates like Florida and California. Committee Meeting Action: Accept in Principle Revise text to read as follows: Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise to read: A vent connector for nonresidential low-heat equipment shall be a factory-built chimney section or steel pipe having resistance to heat and corrosion equivalent to that for the appropriate galvanized pipe as specified in Table Factory-built chimney sections shall be joined together in accordance with the chimney manufacturerʼs instructions

29 Substantiation: Editorial revision for clarification. Committee Meeting Action: Accept Log# CP121 NFG-AAA Final Action: Accept ( , ) Submitter : Technical Committee on National Fuel Gas Code Recommendation: Revise to read: Except as provided for in , t T he maximum horizontal length of a single-wall connector shall be 75 percent of the height of the chimney or vent, except for engineered systems and in accordance with Chapter 1. The maximum length of an individual connector serving multiple appliances, from the appliance outlet to the junction with the common vent or another connector, shall be 100 percent of the height of the chimney or vent Except as provided for in , t T he maximum horizontal length of a Type B double-wall connector shall be 100 percent of the height of the chimney or vent, except for engineered systems and in accordance with Chapter 1. For a chimney or vent system serving multiple appliances, t T he maximum length of an individual connector serving multiple appliances, from the appliance outlet to the junction with the common vent or another connector, shall be 100 percent of the height of the chimney or vent. Substantiation: The paragraph is split as it covers different subjects. The * is deleted as it is not needed. The reference to is deleted, and replaced with the subject of The second sentence of each paragraph is revised editorially to not begin with For. Committee Meeting Action: Accept Ballot Results: Affirmative: 24 Negative: 1 Explanation of Negative: VIRGIL: I vote negative because a substantive change was made in the attempt to editorially not begin with For. The original text applied to a chimney or vent system serving multiple appliances. This erroneous change was made in two places. The text can be corrected in both places as follows, an individual connector for a chimney or vent system serving multiple appliances. In replacing the reference to , approved engineering methods was inappropriately replaced with engineered systems. Engineered systems must be approved by the authority having jurisdiction. Add approved to engineered systems. The proposed text exception would require engineered systems AND in accordance with Chapter 1. Section requires EITHER method, not BOTH methods. Change engineered systems to engineered systems or accordance with Chapter Log# 28 NFG-AAA Final Action: Accept in Part ( ) Submitter : Gregg Gress, Glen Edgar, International Code Council Recommendation: A vent connector shall not pass through any ceiling, floor, or fire-resistance rated wall. A single-wall metal pipe connector shall not pass through any interior wall. Exception: Vent connectors made of listed Type B or Type L vent material and serving listed equipment with draft hoods and other equipment listed for use with Type B gas vents that pass through walls or partitions constructed of combustible material shall be installed with not less than the listed clearance to combustible material. Single-wall metal pipe connectors shall not pass through any wall, floor or ceiling except as permitted by sections and Penetrations of walls, floors and ceilings by vent connectors constructed of Type B or Type L vent material shall be protected as required by the building code. Substantiation: This section conflicts with the manufacturerʼs installation instructions for all major manufacturers of B-vent. The B-vent design manuals depict B-vent connectors passing through ceilings and joining with common vents in attic spaces. This may be necessary to increase connector rise. It also conflicts with section which speaks of Type B and L vent connectors that pass through attics, meaning that they first had to pass through a ceiling to enter the attic. In cases where a B-vent is installed in a fire rated shaft, a connector must pass through a fire-rated wall in order to enter the shaft and connect to the common vent. A B-vent and a B-vent connector are identical in construction, therefore, there is no reason to treat them differently. If a B-vent can rise from an appliance up through a ceiling, why canʼt a B-vent connector do the same? The only difference is that one is called a connector and the other is simply called a B- vent. The exception is no longer needed since the revised main section would not prohibit type B and L vent connector penetrations. The current exception literally applies only to connectors through combustible walls and is silent on noncombustible walls. The exception is not actually an exception anyway because the main section does not prohibit double-wall pipe from penetrating non fire-rated walls. The clearance to combustible requirements of the exception are redundant with section The revised text consolidates the penetration provisions for single-wall pipe connectors and clarifies that double-wall connectors need no prohibition other than what is specified in the building codes, related to penetrations of building elements. Committee Meeting Action: Accept in Part A vent connector shall not pass through any ceiling, floor, or fireresistance rated wall. A single-wall metal pipe connector shall not pass through any interior wall. Exception: Vent connectors made of listed Type B or Type L vent material and serving listed equipment with draft hoods and other equipment listed for use with Type B gas vents that pass through walls or partitions constructed of combustible material shall be installed with not less than the listed clearance to combustible material. Single-wall metal pipe connectors shall not pass through any wall, floor or ceiling except as permitted by sections and Committee Statement: Reference to building codes is deleted as building codes always apply Log# 22 NFG-AAA Final Action: Reject ( , (New) ) Submitter : Gregg Gress, Glen Edgar, International Code Council Recommendation: Delete and add new A single-wall metal pipe shall not pass through a combustible exterior wall unless guarded at the point of passage by a ventilated metal thimble not smaller than the following: (1) For listed appliances equipped with draft hoods and appliances listed for use with Type B gas vents, the thimble shall be a minimum of 4 in. (100 mm) larger in diameter than the single-wall metal pipe. Where there is a run of not less than 6 ft (1.8 m) of single-wall metal pipe in the open between the draft hood outlet and the thimble, the thimble shall be a minimum of 2 in. (50 mm) larger in diameter than the single-wall metal pipe. (2) For unlisted appliances having draft hoods, the thimble shall be a minimum of 6 in. (150 mm) larger in diameter than the single-wall metal pipe. () For residential and low-heat appliances, the thimble shall be a minimum of 12 in. (00 mm) larger in diameter than the single-wall metal pipe. Exception: In lieu of thimble protection, all combustible material in the wall shall be removed from the single-wall metal pipe a sufficient distance to provide the specified clearance from such single-wall metal pipe to combustible material. Any material used to close up such opening shall be noncombustible A vent connector made of a single-wall metal pipe shall not pass through a combustible exterior wall unless guarded at the point of passage by a ventilated metal thimble not smaller than the following: (1) For listed appliances equipped with draft hoods and appliances listed for use with Type B gas vents, the thimble shall be a minimum of 4 in. (100 mm) larger in diameter than the vent connector. Where there is a run of not less than 6 ft (1.8 m) of vent connector in the opening between the draft hood outlet and the thimble, the thimble shall be a minimum of 2 in. (50 mm) larger in diameter than the vent connector. (2) For unlisted appliances having draft hoods, the thimble shall be a minimum of 6 in. (150 mm) larger in diameter than the vent connector. () For residential and low-heat appliances, the thimble shall be a minimum of 12 in. (00 mm) larger in diameter than the vent connector. Exception: In lieu of thimble protection, all combustible material in the wall shall be removed from the vent connector a sufficient distance to provide the specified clearance from such vent connector to combustible material. Any material used to close up such opening shall be noncombustible. Substantiation: This section conflicts with the intent of sections and A single-wall connector that passes through an exterior wall will be in an unconditioned area (outdoors). The current text should be relocated with the single-wall text since this is where it is applicable. Committee Meeting Action: Reject Committee Statement: Refer to Committee Action on (Log #28) Log# CP142 NFG-AAA Final Action: Accept (Chapters 11, 12,1, Annex A, B, C, D, H, J, K and L) Submitter : Technical Committee on National Fuel Gas Code Recommendation: Chapter 11 Procedures to Be Followed to Place Equipment Appliance in Operation * Adjusting Input. The input shall be adjusted to the proper rate in accordance with the equipment appliance manufacturersʼ manufacturerʼs High Altitude. Ratings of gas utilization equipment appliances are based... at elevations above 2000 ft (600 m), equipment appliance ratings... (1) At the rate of 4 percent... sized equipment appliance. 11.2* Primary Air Adjustment. The primary air for injection... in accordance with the appliance manufacturersʼ instructions....

30 11. Safety Shutoff Devices. Where a safety shutoff device is... replaced with a new equipment device Automatic Ignition. Gas utilization equipment Appliances supplied with Protective Devices. All protective devices furnished with the gas utilization equipment appliance, such as * Checking the Draft. Vent-connected gas utilization equipment appliances shall be... Where the combustion products... the draft hood, the equipment appliance shall Operating Instructions. Operating instructions shall... near the equipment appliance for the use of the consumer Vent Height. For multiple units of gas utilization equipment appliances all located on... A...15 Approved. The American Gas Association... installations, procedures, appliances, equipment, or materials;... In determining the acceptability of installations, procedures, appliance, equipment, or materials, the... A...15 Approved. The American Gas Association, American National Standards Institute, and the National Fire Protection Association... procedures, appliances, equipment, or materials;... procedures, appliances, equipment, or materials,... compliance with AGA, ANSI, CSA or NFPA, or other appropriate... The authority... labeling practices [see Section..17] of an organization... Additional information regarding the coordination of appliance design, construction, and maintenance can be found in Annex B. A Listed. The means for identifying listed appliances and equipment may... do not recognize appliances and equipment a listed unless it is also labeled.... A (1) Allowable loss in pressure [see 5.4.4] from point of delivery to equipment appliance. A.5.4. Where the ratings of the equipment appliances to be installed... A.5.4. Gas Piping Size. For any gas piping system, for special gas utilization equipment appliances, or for conditions... A Additional interlocks might be necessary for safe operation of equipment appliances supplied by the gas-mixing machine. A The American Gas Association,... procedures, appliances, equipment, or materials ; nor do they approve or evaluate testing laboratories. In determining... procedures, appliances, equipment, or materials, the authority having jurisdiction can may base acceptance on compliance with AGA, ANSI, CSA or NFPA, or other appropriate standards....the authority having jurisdiction can may also refer to... product evaluations and is thus in a position to determine... Additional information regarding the coordination of gas utilization equipment appliance design,... A.8. Special Conditions Created by Mechanical Exhausting or Fireplaces. Operation of exhaust fans,... installed gas utilization equipment appliances. A Where exhaust fans are... operation of the equipment appliance. A (2) The gas equipment appliance manufacturerʼs instructions () The vent ing equipment system manufacturerʼs sizing instructions (4) Drawings, calculations, and specifications provided by the venti ng equipment system manufacturer Coordination of Gas Utilization Appliance and Equipment Design, Construction, and Maintenance B.1.2 The person or agency planning an installation of gas appliances and equipment does the following: B.1.4 The gas appliance or equipment manufacturer or builder provides the following: (1) Design and construction of all gas appliances or equipment or assemblies shipped from its plant (2) Design and construction of all gas appliances or equipment fabricated, erected, or assembled by the gas appliances or equipment manufacturer or builder in the field In case the ratings of the equipment appliances to be installed... To obtain the cubic feet per hour of gas required, divide the total Btu /hr input of all equipment appliances by the average... C.6 Use of Sizing Charts. (1)... However, in some cases, certain combinations of utilization equipment appliances will not occur simultaneously... () Determine the minimum pressure required at the inlet to the critical utilization equipment appliance. Usually, the critical item will be the piece of equipment appliance with the highest... (5) To use Figure C.6 (a) (low pressure applications), calculate the piping length from the inlet to the critical utilization equipment appliance.... D. Testing for Leakage not Using a Meter (2) For Gas Systems Using Undiluted Liquefied Petroleum Gas: System Preparation for Propane.... Accordingly, each individual equipment appliance shutoff valve... D.4 When Leakage is Indicated. If the meter test hand moves or a pressure drop on the gauge is noted, all appliances and equipment or outlets supplied... H.1 General... Accordingly, in some cases, d... of the equipment appliance. J.1 Example of Combustion Combination Indoor and Outdoor Combustion Air Opening Design. Determine the required... the following equipment appliance installation example. Example Installation:... No additional indoor spaces can be used to help meet the equipment appliance combustion air needs. Solution (1) Determine the total available room volume: Equipment Appliance room volume: K.1.2 Automatic Damper Regulator. A mechanically or... on combustion equipment appliances. K.1.26 Household Cooking Gas Appliance, Floor Supported Unit. K.1.1 Loads, Connected. Sum of the rated Btu/ hr gas input to individual gas utilization equipment appliances connected to a... K.1.5 Regulator, Gas Appliance, Adjustable. K.1.6 Regulator, Gas Appliance, Multistage. K.1.7 Regulator, Gas Appliance, Nonadjustable. L.1 This list of documents is included because they pertain to appliances, equipment, accessories, materials, and... Substantiation: Editorial, consistent terminology use. Editorial changes to Chapters 11 through Annex L. Also see 54-2 (Log #CP1), (Log #CP18), (Log #CP19), (Log #CP140), and (Log #CP141) for remaining revisions to chapters. The National Fuel Gas Code is sometimes inconsistent in the use of such terms as gas utilization equipment, equipment, appliance, gas-burning devices, gas-fired appliances, etc. The use of similar terms to describe gas consuming, and in some cases, non-consuming devices, and their inconsistent use in the code may confuse the code user as to which provisions apply. The main goal of this draft is to separate appliances that consume gas from equipment and systems used in gas delivery, venting, etc. and thereby improve the codeʼs precision. Committee Meeting Action: Accept Comment on Affirmative VIRGIL: I vote affirmative with editorial comments. In A...15, revise as follows,...american National Standards Institute, and National Fire Protection Association do does not approve,... In K.1.1, revise as follows,...rated Btu/ hr gas input.... Add K.1.59 from the AGA version of NFGC to NFPA version of NFGC. In L.1, Chapter 1 should be Chapter 14 and reference should be referenced. B.1.5 The person or agency installing the gas appliances or equipment and the person or agency authorizing the installation of gas appliances or equipment (purchaser) jointly should do the following: (1) Select, erect, or assemble gas appliances and equipment, Log# 19 NFG-AAA Final Action: Accept (4) Initially operate the gas appliances or equipment in a safe manner (11, Chapter 12, Chapter 1) B.2 Gas Appliance and Equipment Design and Construction Checklist. B.2.1 (1) Suitability of appliance and equipment for process requirements B.2.4 (6) Arrangement of piping to provide accessibility for appliance and equipment adjustments... B Gas controls and electrical equipment systems should be selected... B. Maintenance of Gas Appliances and Equipment. B..1 These recommendations are prepared for maintenance of gas appliances and equipment. Special types of appliances and equipment demand special attention. B..5.1 A necessary part of the gas appliance or equipment maintenance... B..5.2 Gas combustion equipment systems, including blowers,... B..7 A necessary part of the gas appliance or equipment maintenance is... B..8 Standby or substitute fuel equipment and systems for gas appliances or equipment should... C.1 General. (1) Allowable loss in pressure from point of delivery to equipment appliance For any gas piping system, or special gas utilization equipment appliance, or Submitter : James Ranfone, American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) Committee Recommendation: Relocate Chapter 11 after Chapter 9. Relocate Chapter 12 after Chapter 5. Relocate Chapter 1 after Chapter 10. Substantiation: To improve the usability of the code. The proposed chapter relocations would group like subjects in logical order as follows: Pipe Sizing (Chapter 12) would follow Gas Piping System Design, Materials, and Components (Chapter 5), Placing Equipment in Operation (Chapter 11) would follow Installation of Specific Equipment (Chapter 9), Sizing of Category I Venting Systems (Chapter 1) would follow Venting of Equipment (Chapter 10). Committee Meeting Action: Accept for conditions... C.2.1 General. The quantity of gas to be provided... from the manufacturerʼs Btu gas input Btu/hr rating of the equipment appliance that will be installed. 54-0

31 Log# CP14 NFG-AAA Final Action: Accept The gas input rate I is calculated with the following formula. (11.1.1, A ) I=Q x HHV Submitter : Technical Committee on National Fuel Gas Code Recommendation: Chapter 11 where: Procedures to Be Followed to Place Equipment in Operation 11.1 Adjusting the Burner Input * Adjusting Input. The input shall be adjusted to the proper rate in accordance with the equipment manufacturersʼ instructions. The input rate can be adjusted by either changing the size of a fixed orifice, I is gas input rate (Btu/hr) Q is the gas flow rate at standard conditions (ft /hr). HHV is the average Higher Heat Value of the gas at standard temperature and pressure conditions (Btu/ft ), which can be obtained from the gas supplier. changing the adjustment of an adjustable orifice, or readjusting the applianceʼs gas pressure regulator outlet pressure (where a regulator is provided in the appliance ). Input rate can be determined by either: (1)* Checking burner input by using a gas meter. Appliances can be seriously overfired, if the timed meter gas flow rate used to set input rate is not adjusted for meter pressure. At 2 psi meter pressure an appliance would be 1% overfired, if the gas flow rate is not adjusted for meter pressure (2)* Checking burner input by using orifice pressure drop and orifice size. Overfiring shall be prohibited. [ See Table ] High Altitude. Gas input ratings Ratings of gas utilization equipment are based on sea level operation and shall not be changed for operation at (2) The fixed orifice size for each burner can be determined in accordance with Table F.1 for utility gases and Table F.2 for undiluted liquefied petroleum gases. Checking Burner Input by Using Orifice Pressure Drop and Orifice Size Not Using a Meter. elevations up to 2000 ft (600 m). For operation at elevations above 2000 ft (600 m), equipment input ratings shall be reduced in ac-cordance with one of the following methods: (1) At the rate of 4 percent for each 1000 ft (00 m) above sea level before selecting appropriately sized equipment. (2) As permitted by the authority having jurisdiction. () Listed appliances derated in accordance with the terms of the ir listing REVISE TABLE TITLES: Table F.4 Equivalent Orifice Sizes at High Altitudes (includes 4% input reduction for each 1000 ft above sea level ) Table F.4 Equivalent Orifice Sizes at High Altitudes (includes 4% input reduction for each 1000 ft above sea level )(Continued) shall be permitted. 11. Safety Shutoff Devices. Where a safety shutoff device is provided, it See next page for tables shall be checked for proper operation and adjustment in accordance with the appliance manufacturerʼs instructions. Where the device does not func-tion properly to turn off the gas supply in the event of pilot outage or other improper operation, it shall be properly serviced or replaced with a new device equipment. DELETE IN ITS ENTIRELY: Table A Burner input shall be checked in accordance with the appliance manufacturerʼs installation instructions. If no appliance instructions are provided, burner input rate can be checked as follows: (1) Checking Burner Input Using a Meter (clocking). To check the Btu /hr input rate, the test hand on the gas meter should be timed for at least one revolution and the input determined from this timing. Test dials are generally marked... are given in Table Tables Table A a through A c. These tables are provided for specific gas pressures within the meters and give gas flow rate (corrected to standard conditions) in cubic feet of gas per hour. Standard temperature is 60 F, and standard pressure is inches of mercury. Measure the time for at least one revolution of a dial. Look up the gas flow rate in Tables A a through A c. Gas flow rates can be calculated for meter pressures other than in these tables in the following manner. A pressure adjustment factor F should be determined for use in the gas input calculation for the gas pressure difference Delta-P between the meter inlet and the atmosphere. The gas supplier can provide the pressure at the meter inlet. The pressure adjustment factor F is calculated with the following formula. Tables A a through A c was were calculated with this formula. mercury) F = (Delta-P+(B x 1.596)) / (29.92 x 1.596) where: F is the pressure correction factor. Deltat-P is the meter inlet pressure (inches of water column). B is the barometric pressure, unadjusted to sea level (inches of NOAA weather reports barometric pressure inches of mercury, adjusted to sea level. The sea level adjustment must be subtracted from the barometric pressure reported by NOAA weather. The local sea level adjustment can be obtained from NOAA. EXAMPLE: NOAA reported barometric pressure to be 0.12 inches of mercury for a city at 250 feet elevation. The barometric pressure adjustment for 250 feet is 0.27 inches of mercury. Subtract the local sea level adjustment from the NOAA barometric pressure to get the unadjusted barometric pressure = The gas flow rate Q is calculated with the following formula. Q = F x C where: Q is gas flow rate at standard conditions (ft /hr) F is the pressure adjustment factor. C is the timed gas flow rate (ft /hr) 54-1 Substantiation: Provide guidance on two methods to adjust appliance input rate. If furnace gas input rate is set accurately by using orifice size and manifold pressure, the apparent input rate measured by clocking the utility gas meter will always be lower than the actual input rate, unless we account for pressure drop at the manifold (normally.5 iwc) plus the difference in pressure (presssure drop) between the manifold and the meter. The meter is uncompensated for the difference between meter gas pressure and barometric pressure. The higher pressure within the meter will result in more mass (higher density) per cubic foot of gas. The effect on clocked gas input rate due to higher gas pressure within the gas meter can be significant. ANSI Z21.47 CSA , b.9. requires a rating plate marking that states, Minimum permissible gas supply pressure for purposes of input adjustment, which we could mark as 4.5 iwc for natural gas. With the meter pressure equal to the minimum gas supply pressure of 4.5 iwc, the actual input will be 1.11% higher than the apparent clocked input rate. Any increase in meter pressure beyond 4.5 iwc will cause still greater overfiring. At 1.5 iwc meter pressure, the actual input will be.2% high. Some gas utilities are installing gas meters in the 2 psi service lines ahead of the service regulators, which will cause even greater overfiring unless the input measurement accounts for the pressure difference. If the meter pressure is 2 psi, the actual input would be 1.61% higher than the apparent clocked rate, unless the measurement accounts for the pressure difference. Committee Meeting Action: Accept Comment on Affirmative VIRGIL: I vote affirmative with editorial comments. Revise A (1) in three places as follows,...table s A a through A c. Revise A (1) as follows,... was were calculated with this formula. In the example, Indent the paragraphs starting with NOAA, The gas flow... and The gas input.... The lines that are already indented should be indented further than the three listed above. The line that starts with HHV should be indented under HHV after it wraps around to the next line. Revise A (2) by adding the following sentence to the first line, The fixed orifice size for each burner can be determined in accordance with Table F.1 for utility gases and Table F.2 for undiluted liquefied petroleum gases Log# 114 NFG-AAA Final Action: Reject (11., 11.5) Submitter : Robert S. Boiko, R. Boiko Corporation Recommendation: Revise text to read as follows: 11. Safety Shutoff Devices. Where a safety shutoff device is provided, it shall be checked for proper operation and adjustment in accordance with the manufacturerʼs instructions. Where the device does not function properly to turn off the gas supply in the event of a pilot outage, or electronic ignition failure, it shall be properly serviced or replaced with new equipment. Any replacement parts required shall be approved by the original equipment

32 Table A Gas Flow Rate to Burner in Cubic Feet per Hour at Standard Temperature and Pressure Meter Pressure: 7.0 in. wc or 0.25 psi 11.0 in. wc or 0.40 psi 55.4 in. wc or 2 psi Seconds Size of Test Meter Dial for One 1 / Revolution 2 ft 1 ft 2 ft 5 ft 1 / 2 ft 1 ft 2 ft 5 ft 1 / 2 ft 1 ft 2 ft 5 ft

33 Table A Gas Flow Rate to Burner in Cubic Feet per Hour at Standard Temperature and Pressure (Continued) Meter Pressure: 7.0 in. wc or 0.25 psi 11.0 in. wc or 0.40 psi 55.4 in. wc or 2 psi Seconds Size of Test Meter Dial for One 1 / Revolution 2 ft 1 ft 2 ft 5 ft 1 / 2 ft 1 ft 2 ft 5 ft 1 / 2 ft 1 ft 2 ft 5 ft Note: To convert to Btu per hour, multiply the cubic feet per hour of gas by the Btu per cubic foot heating value of the gas used. 54-

34 manufacturer of AGA as compatible for use in the control and operting circuit 1. Revise the inlet pressure to 2.0 psi or less in all low pressure tables, and of that specific burning appliance. delete the footnote Protective Devices. All protective devices furnished with the gas 2. Replace NR where used in all tables with NA. Add a footnote NA utilization equipment such as a limit control, fan control to blower, temperature means a flow of less than 10 cfh in all natural gas tables, and NA means a and pressure relief valve, low water cutoof device, or manual operating features flow of less than 10,000 btu/hr in all propane tables. shall be checked for proper operation. Any replacement parts required shall be. Provide significant digits and no decimals in all table entries. approved by the original equipment manufacturer or AGA as compatible for 4. Eliminate 2 1/2 inch copper tube size columns in all copper tables. Replace 1 use in the control and operating circuit of that specific gas burning appliance. 5/8 and 2 1/8 ACR headings with -. Substantiation: 11. as written does not describe electronic ignition via spark 5. Do not delete Table 12. ignited pilots or direct spark ignition of burners. The new wording addresses 6. Revise Tables 12.19, 12.20, 12.1, 12.2 and 12. and extend the pipe this issue. 11. and 11.5 AGA and UL approval of appliances is based on lengths to 2,000 ft and make other revisions consistent with the other tables. specific components functioning in a precise manner. Replacing original factory parts with non-approved parts can be dangerous. Example, fast rise gas See revised tables on pages valve where designed for slow rise, undersized relief valve. Committee Meeting Action: Reject Committee Statement: The concept of tables with longer lengths and other Committee Statement: Electronic ignition failure will result in no gas flow. revisions is accepted. Tables 12.5 and 12.6 are deleted as they are combined in There is no substantiation that a problem exists. the revised Tables 12.1 and Log# 15 NFG-AAA Final Action: Reject (12.1) Submitter : Alfonso Fernandez-Fraga, Initial Engineers, P.A. Recommendation: 12.1 Pipe Sizing Methods. Where the pipe size is to be determined using any of the methods in through 12.1., the diameter of each pipe segment shall be obtained from the pipe sizing tables in Section 12.2 or from the sizing equations in Section 12.. [See calculation examples in Annex C]. For SI units, 1 ft = m ; 1 ft = 0.05 m; 1 in. w.c. = kpa; 1 psi = kpa; 1000 Btu/hr = 0.29 kw. Linear interpolation is permitted for pipe sizing tables where the initial pressure is less than 1.5 psi. Substantiation: It is my understanding that linear interpolation is permitted for tables that reflect calculations for pressures less than 1.5 psig. Because Annex C item C(f) indicates choose the next larger figure below in the column, the authorities having jurisdiction have taken this to mean that linear interpolation is not acceptable. Informal Interpretation by Paul Cabot dated October 8, 2002 Committee Meeting Action: Reject Committee Statement: It is the intent of the committee to allow interpolation Log# 99 NFG-AAA Final Action: Accept in Principle (Table 12.1,12.-2,,4,5,6,7,8,9,10,11,12,1,14,15,19,20,22,2,24,25,26,27,;..149) Submitter : Terry Swisher, IAPMO Recommendation: Revise tables as follows: See Tables on pages 5 through 55. Substantiation: The Uniform Plumbing Code (UPC) Technical Committee requests the following revisions: 1. The NFGC steel and copper gas piping tables should be expanded to longer lengths (up to 2000 feet) to make them more usable for UPC users and will allow their extraction into the UPC. 2. All steel and copper tables should use the following pipe length increments: 10 ft between 0-100ft, 25 ft between ft, 50ft between ft, 100ft between ft. These increments should enable most users to directly use the tables without the need for interpolation.. Merge tables 12.1 & 12.5, 12.2 &12.6. The two merged tables will then list all of the pipe sizes for low pressure schedule 40 steel natural gas systems up to 2000 feet. 4. Pipe capacities for sizes 1/4, /8 and -1/2 inch in the schedule 40 steel tables are not usable since these sizes are not available. These columns should be deleted where they appear in the tables. The minimum connecter pipe size for most appliances is 1/2 inch. 5. By expanding the tables, some smaller diameter pipe size capacities fall below 10,000 Btu. Since this low capacity would not be useful for gas pipe design, a NR (Not Recommended) should replace all table capacities 10,000 Btu and below. A NR definition is also being proposed. 6. The low pressure natural gas tables should be labeled so the inlet pressure title block reads 0.5 psi* with a footnote that indicates that the table capacities are valid for all inlet pressures below 2 psi with the same pressure drop. This change would make the table labeling consistent with the terminology understood and used by most installers and code officials. 7. Delete Table 12. for polyethylene plastic tubing since the material does not have consensus product standard. Committee Meeting Action: Accept in Principle Accept the proposal with the following revisions Log# 126 NFG-AAA Final Action: Accept in Principle in Part (Table 12.4 (New) ) Submitter : Terry Swisher, IAPMO / Rep. Committee on Uniform Plumbing Code Recommendation: Add UPC Table 12-9 Natural Gas, Schedule 40, psi with 1.5 psi pressure drop as a new table in the NFGC. See tables on pages 88 and 89 Substantiation: The Uniform Plumbing Code (UPC) contains pipe-sizing table for natural gas, schedule 40, psi with 1.5 psi pressure drop. By adding this new table, the NFGC will be more usable and would better coordinate coverage between the UPC and NFGC. Committee Meeting Action: Accept in Principle in Part Add a new Table 12-4 with a psi inlet and 2 psi drop, which has been revised per the tables accepted in (Log #99). Insert Table 12-4 (Revised by Committee). Committee Statement: The revised table will be consistent with the tables approved in (Log #99). The committee believes that a 2 psi drop is more realistic for this table. The metric table is not included as it is not needed. Metric conversions are provided Log# 101 NFG-AAA Final Action: Accept in Principle (Table 12.14, , 16, 17, 18, 28, 29, 0) Submitter : Robert Torbin, Foster-Miller, Inc. Recommendation: Update of existing tables to include two new CSST EHD sizes. The new EHD sizesinclude 48 and 60. See tables on pages 90 through 92 Substantiation: Occasionally, new CSST sizes are needed as manufacturers submit new products to testing labs for certification. Per the requirements of ANSI LC-1, there shall be two EHD sizes for each nominal size of CSST. Thus a second line is needed for 1.5-in and a second size is needed for 2-inch. Committee Meeting Action: Accept in Principle The tables are accepted and revised to limit all value to significant digits and to show no decimal values. See tables on pages 90 through 92 The revisions in these tables are in addition to the changes made in proposal (Log #99). Committee Statement: The tables are revised to be consistent with those accepted in (Log #99) Log# 117 NFG-AAA Final Action: Reject (12.14, 12.18) Submitter : Richard Powell, Ward Manufacturing Inc. Recommendation: Add nominal sizes to columns along with EHD values for CSST tables. Substantiation: Users do not understand the correlation between CSST nominal tubing sizes and EHD values. This has led some users to oversize systems.

35 ..149 NR. Piping configuration is not recommended due to capacity of 10,000 Btu or less. Table 12.1 Schedule 40 Metallic Pipe Gas Natural Inlet pressure 0.50 psi or less Pressure Drop 0. in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal 1 1 / / / 2 4 Actual ID Table 12.2 Maximum Capacity in Cubic Feet of Gas per Hour ,050 1,600,050 4,800 8,500 17, ,100 2,100,00 5,900 12, ,650 2,700 4,700 9, ,450 2,00 4,100 8, ,270 2,000,600 7, ,150 1,850,250 6, ,050 1,700,000 6, ,600 2,800 5, ,500 2,600 5, ,400 2,500 5, ,250 2,200 4, ,10 2,000 4, ,050 1,850, ,700,500 Schedule 40 Metallic Pipe Gas Natural Inlet pressure 0.50 psi or less Pressure Drop 0.5 in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal 1 1 / / / 2 4 Actual ID Maximum Capacity in Cubic Feet of Gas per Hour ,400 2,100,950 6,00 11,000 2, ,460 2,750 4,50 7,700 15, ,180 2,200,520 6,250 12, ,900,000 5,00 10, ,680 2,650 4,750 9, ,520 2,400 4,00 8, ,400 2,250,900 8, ,00 2,050,700 7, ,220 1,950,450 7, ,150 1,850,250 6, ,020 1,650 2,950 6, ,500 2,650 5, ,70 2,450 5, ,280 2,280 4,

36 54-11 (Log #99) Rec. continued Table 12.5 Schedule 40 Metallic Pipe Gas Natural Inlet pressure 1.0 psi or less Pressure Drop 0. in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal / / 2 1 / Actual ID Table 12.6 Maximum Capacity in Cubic Feet of Gas per Hour ,275 2,0,594 5,262 7,0 1,261 21,472 44,118 80,10 126, ,97 2,470,616 5,08 9,114 14,758 0,22 55,07 87, ,122 1,98 2,904 4,046 7,19 11,851 24,50 44,225 70, ,698 2,485,462 6,264 10,14 20,840 7,851 59, ,505 2,20,069 5,552 8,990 18,470,547 5, ,6 1,996 2,780 5,00 8,145 16,75 0,96 48, ,167 1,708 2,80 4,05 6,971 14,2 26,015 41, ,04 1,514 2,109,816 6,178 12,694 2,056 6,501 1, ,041 1,450 2,62 4,246 8,725 15,847 25,087 1, ,164 2,106,410 7,006 12,725 20,146 2, ,802 2,919 5,997 10,891 17,242 Schedule 40 Metallic Pipe Gas Natural Inlet pressure 1.0 psi or less Pressure Drop 0.5 in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal / / 2 1 / Actual ID Maximum Capacity in Cubic Feet of Gas per Hour ,681 2,680 4,78 6,97 9,66 17,482 28,08 58, ,66 167, ,156 1,842,256 4,767 6,641 12,015 19,456 9,974 72,60 114, ,479 2,615,828 5, 9,649 15,624 2,100 58,0 92, ,266 2,28,277 4,565 8,258 1,72 27,474 49,900 78, ,122 1,98 2,904 4,046 7,19 11,851 24,50 44,225 70, ,017 1,797 2,61,666 6,62 10,78 22,062 40,071 6, ,58 2,252,17 5,676 9,190 18,88 4,296 54, ,6 1,996 2,780 5,00 8,145 16,75 0,96 48,120 1, ,72 1,911,457 5,598 11,502 20,891,07 1, ,102 1,55 2,776 4,496 9,27 16,776 26,559 2, ,1 2,76,848 7,905 14,58 22,

37 54-11 (Log #99) Rec. continued Table 12.1 Schedule 40 Metallic Pipe Gas Natural Inlet pressure 0.5 psi* Pressure Drop 0. in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal 1 / / / Actual ID Maximum Capacity in Cubic Feet of Gas per Hour ,056 1,582,046 4,856 8,584 17,508 1,675 51, ,79 191,97 0, ,087 2,094,7 5,900 12,0 21,770 5,251 72,426 11, , ,681 2,680 4,78 9,66 17,482 28,07 58, ,66 167, ,49 2,294 4,055 8,270 14,962 24,228 49,778 90,411 14, ,275 2,0,594 7,0 1,261 21,472 44,118 80, , ,156 1,842,256 6,641 12,015 19,456 9,974 72,60 114, ,06 1,695 2,996 6,110 11,054 17,899 6,775 66, , ,576 2,787 5,684 10,284 16,651 4,212 62,19 98, ,479 2,615 5, 9,649 15,62 2,100 58,0 92, ,97 2,470 5,08 9,114 14,758 0,22 55,072 87, ,28 2,189 4,465 8,078 1,080 26,874 48,810 77, ,122 1,98 4,046 7,19 11,851 24,49 44,225 70, ,02 1,825,722 6,7 10,90 22,401 40,687 64, ,698,462 6,264 10,14 20,840 7,851 59, ,505,069 5,552 8,990 18,470,547 5, ,6 2,780 5,00 8,145 16,75 0,96 48, ,254 2,558 4,628 7,49 15,96 27,964 44, ,167 2,80 4,05 6,971 14,2 26,015 41, ,095 2,2 4,09 6,541 1,49 24,409 8, ,04 2,109,816 6,178 12,694 2,056 6, ,00,624 5,868 12,056 21,898 4, ,911,457 5,598 11,502 20,891, ,80,11 5,61 11,015 20,005 1, ,758,181 5,150 10,582 19,219 0, ,694,064 4,962 10,194 18,515 29, ,66 2,959 4,791 9,844 17,880 28, ,58 2,864 4,67 9,527 17,0 27, ,55 2,776 4,496 9,27 16,776 26, ,490 2,696 4,66 8,970 16,292 25,79 1, ,450 2,622 4,246 8,725 15,847 25,087 1, ,77 2,491 4,0 8,286 15,050 2,826 1,200 NR ,1 2,76,848 7,905 14,58 22,71 1,00 NR ,258 2,275,685 7,570 1,750 21,767 1,400 NR ,208 2,186,540 7,27 1,209 20,912 1,500 NR ,164 2,106,410 7,006 12,725 20,146 1,600 NR ,124 2,04,29 6,766 12,289 19,455 1,700 NR ,088 1,968,187 6,548 11,892 18,827 1,800 NR ,055 1,908,090 6,48 11,50 18,254 1,900 NR ,024 1,85,001 6,165 11,198 17,727 2,000 NR ,802 2,919 5,996 10,891 17,242 *Table capacities are valid or any inlet gas pressure less than 2 psi with a 0. in. pressure drop. 54-7

38 54-11 (Log #99) Rec. continued Table 12.2 Schedule 40 Metallic Pipe Gas Natural Inlet pressure 0.5 psi* Pressure Drop 0.5 in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal 1 / / / Actual ID Maximum Capacity in Cubic Feet of Gas per Hour ,92 2,085 4,016 6,401 11,16 2,081 41,758 67,615 18,92 252,22 99, ,4 2,760 4,400 7,778 15,864 28,700 46,471 95,481 17, , ,151 2,217,5 6,246 12,79 2,047 7,18 76,675 19, , ,897,024 5,45 10,90 19,725 1,940 65, , , ,681 2,680 4,78 9,66 17,482 28,07 58, ,66 167, ,52 2,428 4,29 8,756 15,840 25,649 52,698 95, , ,402 2,24,949 8,055 14,57 2,596 48,482 88,055 19, ,04 2,078,674 7,494 1,557 21,952 45,10 81, , ,22 1,950,447 7,01 12,720 20,597 42,18 76, , ,156 1,842,256 6,641 12,015 19,456 9,974 72,60 114, ,024 1,62 2,886 5,886 10,649 17,24 5,428 64,47 101, ,479 2,615 5, 9,649 15,62 2,100 58,0 92, ,61 2,406 4,907 8,877 14,7 29,52 5,68 84, ,266 2,28 4,565 8,258 1,72 27,474 49,900 78, ,122 1,98 4,046 7,19 11,851 24,49 44,225 70, ,017 1,797,666 6,62 10,78 22,062 40,071 6, ,65,72 6,101 9,879 20,297 6,865 58, ,58,17 5,676 9,190 18,88 4,296 54, ,44 2,944 5,25 8,62 17,717 2,179 50, ,6 2,780 5,00 8,145 16,75 0,96 48, ,295 2,641 4,777 7,76 15,894 28,868 45, ,25 2,519 4,558 7,80 15,16 27,541 4, ,18 2,41 4,65 7,067 14,521 26,74 41, ,16 2,18 4,19 6,790 1,950 25,7 40, ,095 2,2 4,09 6,541 1,49 24,409 8, ,057 2,156,901 6,16 12,978 2,571 7, ,02 2,087,775 6,11 12,559 22,811 6, ,02,660 5,927 12,177 22,116 5, ,965,555 5,756 11,826 21,479 4,00 1, ,911,457 5,598 11,502 20,891,07 1, ,815,284 5,17 10,924 19,841 1,411 1, ,72,1 5,072 10,422 18,929 29,966 1, ,658,000 4,857 9,980 18,126 28,696 1, ,59 2,882 4,666 9,588 17,414 27,569 1, ,55 2,776 4,496 9,27 16,776 26,559 1, ,482 2,681 4,41 8,920 16,200 25,647 1, ,44 2,595 4,201 8,62 15,678 24,820 1, ,90 2,516 4,07 8,69 15,200 24,064 1, ,50 2,44,956 8,128 14,762 2,70 2, ,1 2,76,848 7,905 14,58 22,71 *Table capacities are valid or any inlet gas pressure less than 2 psi with a 0.5 in. pressure drop. 54-8

39 54-11 (Log #99) Rec. continued Table 12. Schedule 40 Metallic Pipe Gas Natural Inlet pressure 2.0 psi Pressure Drop 1.0 psi Specific Gravity 0.60 Pipe Size (in.) Nominal 1 / / / 2 4 Actual ID Maximum Capacity in Cubic Feet of Gas per Hour 10 1,506,041 5,561 11,415 17,106 2,944 52,505 92, , ,065 2,150,92 8,072 12,096 2,295 7,127 65,6 1, ,756,211 6,591 9,876 19,020 0,14 5, , ,521 2,781 5,708 8,55 16,472 26,25 46,410 94, ,60 2,487 5,105 7,650 14,7 2,481 41,510 84, ,241 2,270 4,660 6,98 1,449 21,45 7,89 77, ,150 2,102 4,15 6,465 12,452 19,845 5,082 71, ,075 1,966 4,06 6,048 11,647 18,56 2,817 66, ,014 1,854,805 5,702 10,981 17,502 0,940 6, ,708,508 5,257 10,125 16,18 28,50 58, ,528,18 4,702 9,056 14,44 25,518 52, ,7 2,817 4,222 8,10 12,960 22,911 46, ,271 2,608,909 7,527 11,999 21,211 4, ,174 2,41,61 6,959 11,09 19,608 9, ,04 2,141,209 6,179 9,849 17,411 5, ,940 2,907 5,599 8,924 15,775 2, ,785 2,675 5,151 8,210 14,51 29, ,661 2,488 4,792 7,68 1,502 27, ,558 2,5 4,496 7,166 12,668 25, ,472 2,205 4,247 6,769 11,966 24, ,98 2,094 4,04 6,429 11,65 2, ,4 1,998,848 6,1 10,842 22, ,277 1,91,685 5,87 10,8 21, ,227 1,88,540 5,642 9,975 20, ,182 1,771,410 5,46 9,609 19, ,141 1,710,29 5,249 9,280 18, ,105 1,655,187 5,080 8,980 18, ,071 1,605,090 4,925 8,707 17, ,040 1,558,001 4,78 8,456 17,247 1, ,012 1,516 2,919 4,652 8,224 16,775 1, ,49 2,772 4,418 7,811 15,92 1, ,7 2,645 4,215 7,452 15,200 1, ,15 2,5 4,07 7,16 14,555 1, ,26 2,4,878 6,856 1,98 1, ,217 2,44,76 6,605 1,471 1, ,175 2,264,608 6,78 1,009 1, ,17 2,191,491 6,172 12,589 1, ,10 2,124,85 5,984 12,206 1, ,071 2,06,287 5,812 11,854 2, ,042 2,006,197 5,65 11,

40 54-11 (Log #99) Rec. continued Table 12.4 Schedule 40 Metallic Pipe Gas Natural Inlet pressure 5.0 psi Pressure Drop.5 psi Specific Gravity 0.60 Pipe Size (in.) Nominal 1 / / / 2 4 Actual ID Maximum Capacity in Cubic Feet of Gas per Hour 10,185 6,44 11,766 24,161 6,206 69, ,1 196, , ,252 4,550 8,20 17,084 25,602 49,05 78,58 18,924 28,61 0 1,89,715 6,79 1,949 20,904 40,257 64,162 11,41 21,6 40 1,59,217 5,88 12,080 18,10 4,864 55,566 98,24 200, ,425 2,878 5,262 10,805 16,192 1,18 49,700 87,86 179, ,01 2,627 4,804 9,864 14,781 28,466 45,70 80,208 16, ,204 2,42 4,447 9,12 1,685 26,54 42,004 74, , ,15 2,0 4,260 8,542 12,801 24,652 9,291 69, , ,062 2,145,922 8,054 12,069 2,242 7,044 65,489 1, ,978,617 7,427 11,128 21,4 4,159 60,87 12, ,769,25 6,64 9,95 19,170 0,55 54, , ,589 2,905 5,964 8,97 17,211 27,41 48,494 98, ,471 2,690 5,522 8,274 15,94 25,96 44,897 91, ,60 2,487 5,104 7,649 14,729 2,478 41,504 84, ,167 2,199 4,515 6,765 1,028 20,764 6,708 74, ,058 1,992 4,091 6,129 11,804 18,814,260 67, ,8,76 5,69 10,860 17,09 0,599 62, ,705,501 5,246 10,10 16,102 28,466 58, ,600,285 4,922 9,479 15,108 26,709 54, ,511,10 4,649 8,954 14,271 25,229 51, ,45 2,947 4,416 8,504 1,554 2,961 48, ,69 2,812 4,21 8,11 12,91 22,859 46, ,11 2,692 4,04 7,769 12,8 21,891 44, ,260 2,587,876 7,464 11,896 21,00 42, ,214 2,492,74 7,190 11,460 20,260 41, ,172 2,406,605 6,944 11,067 19,565 9, ,14 2,29,489 6,720 10,710 18,9 8, ,100 2,258,8 6,515 10,84 18,57 7, ,068 2,19,285 6,27 10,085 17,828 6,6 1, ,09 2,1,195 6,154 9,809 17,40 5,68 1, ,025,05 5,845 9,16 16,468,590 1, ,92 2,895 5,576 8,887 15,711 2,046 1, ,850 2,77 5,40 8,511 15,045 0,688 1, ,778 2,664 5,10 8,176 14,454 29,482 1, ,71 2,566 4,942 7,877 1,924 28,401 1, ,654 2,478 4,772 7,606 1,447 27,427 1, ,600 2,98 4,618 7,61 1,01 26,542 1, ,552 2,25 4,478 7,17 12,617 25,74 1, ,507 2,258 4,49 6,91 12,25 24,992 2, ,466 2,196 4,20 6,741 11,918 24,

41 54-11 (Log #99) Rec. continued Table 12.7 Semi-Rigid Copper Tubing Tube Size (in.) Gas Natural Inlet pressure 0.5 psi or less* Pressure Drop 0. in. WC Specific Gravity 0.60 K & L / / / 2 Nominal: ACR 1 / Outside: Inside: Maximum Capacity in Cubic Feet of Gas per Hour ,271 2,646 4, ,819, ,461 2, ,250 2, NR ,108 1, NR ,004 1, NR ,64 80 NR , NR , NR , NR , NR , NR 4. NR NR 4.0 NR NR.5 NR NR.2 NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR ,000 NR NR NR ,100 NR NR NR ,200 NR NR NR ,00 NR NR NR ,400 NR NR NR ,500 NR NR NR NR ,600 NR NR NR NR ,700 NR NR NR NR ,800 NR NR NR NR ,900 NR NR NR NR ,000 NR NR NR NR Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products. *Table capacities are valid or any inlet gas pressure less than 2 psi with a 0. in. pressure drop 54-41

42 54-11 (Log #99) Rec. continued Table 12.8 Semi-Rigid Copper Tubing Tube Size (in.) Gas Natural Inlet pressure 0.5 psi or less* Pressure Drop 0.5 in. WC Specific Gravity 0.60 Nominal: K & L 1 1 / / / 2 ACR Outside: Inside: Maximum Capacity in Cubic Feet of Gas per Hour ,062 1,675,489 6, ,151 2,98 4, ,926, ,648 2, ,461 2, ,2 2,41 70 NR ,218 2, NR ,1 2, NR ,06 1, NR ,004 1, NR , NR , NR , NR , NR , NR 4.2 NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR ,000 NR NR NR ,100 NR NR NR ,200 NR NR NR ,00 NR NR NR ,400 NR NR NR ,500 NR NR NR ,600 NR NR NR ,700 NR NR NR ,800 NR NR NR ,900 NR NR NR ,000 NR NR NR Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products. *Table capacities are valid or any inlet gas pressure less than 2 psi with a 0.5 in. pressure drop 54-42

43 54-11 (Log #99) Rec. continued Table 12.9 Semi-Rigid Copper Tubing Gas Natural Inlet pressure 0.5 psi or less* Pressure Drop 1.0 in. WC Specific Gravity 0.60 Nominal: SPECIAL USE: Use this Table to Size Tubing from House Line Regulator to the Appliance. Tube Size (in.) K & L 1/4 /8 1/2 5/8 / /4 1-1/ /2 ACR /8 1/2 5/8 /4 7/8 1-1/8 1-/8 1-5/8 2-1/8 2-5/8 Outside: Inside: Maximum Capacity in Cubic Feet of Gas per Hour ,546 2,47 5,076 8, ,062 1,675,489 6, ,45 2,802 4, ,151 2,98 4, ,020 2,125, ,926, ,772, ,648 2, ,546 2, ,461 2, NR ,295 2, NR ,17 2, NR ,079 1, NR ,004 1, NR , NR , NR , NR , NR , NR NR , NR NR , NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR ,000 NR NR ,100 NR NR ,200 NR NR ,00 NR NR ,400 NR NR ,500 NR NR ,600 NR NR ,700 NR NR ,800 NR NR NR ,900 NR NR NR ,000 NR NR NR *Table capacities are valid or any inlet gas pressure less than 2 psi with a 1.0 in. pressure drop. 54-4

44 54-11 (Log #99) Rec. continued Table Semi-Rigid Copper Tubing Gas Natural Inlet pressure 2.0 psi or less Pressure Drop 17.0 in. WC Specific Gravity 0.60 Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Cubic Feet of Gas per Hour ,91 1,974 4,216 7,591 11,968 24,926 44, ,57 2,898 5,217 8,226 17,12 0, ,089 2,27 4,189 6,605 1,757 24, ,992,586 5,65 11,775 20, ,765,178 5,010 10,46 18, ,599 2,879 4,540 9,455 16, ,471 2,649 4,177 8,699 15, ,69 2,464,886 8,09 14, ,284 2,12,646 7,59 1, ,21 2,184,444 7,172 12, ,075 1,96,052 6,57 11, ,754 2,765 5,760 10, ,614 2,544 5,299 9, ,501 2,67 4,90 8, ,0 2,098 4,69 7, ,205 1,901,959 7, ,109 1,749,642 6, ,02 1,627,88 5, ,526,179 5, ,442,00 5, ,69 2,852 5, ,06 2,721 4, ,251 2,605 4, ,202 2,50 4, ,158 2,411 4, ,118 2,29 4, ,082 2,25, ,049 2,185, ,019 2,122,754 1, ,064,651 1, ,960,468 1, ,870,08 1, ,791,168 1, ,720,044 1, ,657 2,92 1, ,600 2,81 1, ,549 2,740 1, ,502 2,657 1, ,458 2,580 2, ,418 2,509 Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products

45 54-11 (Log #99) Rec. continued Table Semi-Rigid Copper Tubing Gas Natural Inlet pressure 2.0 psi or less Pressure Drop 1.0 psi Specific Gravity 0.60 Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Cubic Feet of Gas per Hour ,00 1,800 2,554 5,455 9,820 15,48 2,247 57, ,27 1,755,749 6,749 10,641 22,16 9, ,409,011 5,420 8,545 17,798 1, ,206 2,577 4,69 7,14 15,22 26, ,069 2,284 4,111 6,482 1,500 2, ,069,725 5,87 12,22 21, ,904,427 5,40 11,25 19, ,771,188 5,027 10,469 18, ,662 2,991 4,716 9,82 17, ,570 2,826 4,455 9,279 16, ,91 2,504,948 8,22 14, ,260 2,269,577 7,451 1, ,160 2,087,291 6,855 12, ,079 1,942,062 6,77 11, ,721 2,714 5,652 10, ,559 2,459 5,121 9, ,45 2,262 4,711 8, ,5 2,104 4,8 7, ,252 1,974 4,112 7, ,18 1,865,885 6, ,12 1,771,689 6, ,072 1,690,520 6, ,026 1,618,71 5, ,555,28 5, ,498,119 5, ,446,012 5, ,400 2,915 5, ,57 2,826 5, ,18 2,745 4,856 1, ,282 2,670 4,724 1, ,217 2,56 4,486 1, ,161 2,419 4,280 1, ,112 2,17 4,098 1, ,069 2,226,97 1, ,029 2,144,79 1, ,070,66 1, ,004,545 1, ,94,47 1, ,887,8 2, ,85,246 Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products

46 54-11 (Log #99) Rec. continued Table Semi-Rigid Copper Tubing Gas Natural Inlet pressure 2.0 psi Pressure Drop 1.5 psi Specific Gravity 0.60 SPECIAL USE: Pipe Sizing Between Point of Delivery and the House Line Regulator. Total Load Supplied by a Single House Line Regulator Not Exceeding 150 Cubic Feet per Hour. 2 Tube Size (in.) Nominal: K & L / / / 2 ACR 1 / Outside: Inside 1 : Maximum Capacity in Cubic Feet of Gas per Hour ,272 2,224,155 6,79 12,11 19,127 9,87 70, ,528 2,168 4,61 8,8 1,146 27,80 48, ,227 1,741,719 6,696 10,557 21,987 8, ,050 1,490,18 5,71 9,05 18,818, ,21 2,821 5,079 8,008 16,678 29, ,197 2,556 4,602 7,256 15,112 26, ,101 2,52 4,24 6,675 1,90 24, ,024 2,188,99 6,210 12,94 22, ,05,695 5,826 12,15 21, ,99,491 5,504 11,46 20, ,718,094 4,878 10,159 17, ,557 2,80 4,420 9,205 16, ,42 2,579 4,066 8,469 14, , 2,99,78 7,878 1, ,181 2,126,52 6,982 12, ,070 1,927,08 6,27 11, ,772 2,79 5,818 10, ,648 2,599 5,412 9, ,546 2,48 5,078 8, ,461 2,0 4,797 8, ,87 2,187 4,556 8, ,24 2,087 4,46 7, ,267 1,998 4,162 7, ,218 1,920,999 7, ,17 1,849,852 6, ,1 1,786,720 6, ,096 1,728,600 6, ,06 1,676,490 6, ,02 1,627,90 5,997 1, ,004 1,58,297 5,8 1, ,50,11 5,540 1, ,44 2,987 5,285 1, ,7 2,861 5,061 1, ,19 2,748 4,862 1, ,271 2,648 4,684 1, ,228 2,557 4,52 1, ,188 2,474 4,77 1, ,152 2,99 4,244 1, ,119 2,0 4,122 2, ,088 2,266 4,009 Notes: 1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products. 2. When this table is used to size the tubing upstream of a line pressure regulator, the pipe or tubing downstream of the line pressure regulator shall be sized using a pressure drop no greater than 1 inch w.c

47 54-11 (Log #99) Rec. continued Table 12.1 Semi-Rigid Copper Tubing Gas Natural Inlet pressure 5.0 psi or less Pressure Drop.5 psi Specific Gravity 0.60 Nominal: Tube Size (in.) K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Cubic Feet of Gas per Hour ,054 2,144,747 5,15 11,54 20,441 2,229 67, , ,47 2,575,65 7,804 14,049 22,151 46,15 81, ,18 2,068 2,94 6,267 11,282 17,788 7,048 65, ,01 1,770 2,511 5,64 9,656 15,224 1,708 56, ,569 2,225 4,754 8,558 1,49 28,102 49, ,421 2,016 4,07 7,754 12,225 25,46 45, ,08 1,855,962 7,14 11,247 2,425 41, ,216 1,726,686 6,66 10,46 21,79 8, ,141 1,619,459 6,227 9,817 20,447 6, ,078 1,529,267 5,882 9,27 19,15 4, ,56 2,896 5,21 8,219 17,118 0, ,228 2,624 4,72 7,447 15,510 27, ,10 2,414 4,45 6,851 14,269 25, ,051 2,245 4,042 6,74 1,275 2, ,990,58 5,649 11,765 20, ,80,246 5,118 10,660 18, ,659 2,987 4,709 9,807 17, ,54 2,778 4,81 9,124 16, ,448 2,607 4,110 8,560 15, ,68 2,462,882 8,086 14, ,299 2,9,687 7,680 1, ,29 2,21,518 7,27 12, ,187 2,17,69 7,016 12, ,140 2,05,26 6,740 11, ,098 1,977,118 6,49 11, ,061 1,910,011 6,271 11, ,026 1,848 2,914 6,068 10, ,792 2,825 5,884 10, ,740 2,74 5,714 10,109 1, ,692 2,668 5,558 9,8 1, ,607 2,54 5,278 9,8 1, ,5 2,418 5,06 8,909 1, ,468 2,15 4,822 8,51 1, ,411 2,224 4,6 8,196 1, ,59 2,14 4,46 7,896 1, ,12 2,069 4,10 7,625 1, ,270 2,002 4,171 7,79 1, ,21 1,942 4,044 7,154 1, ,196 1,886,927 6,948 2, ,16 1,84,820 6,758 Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products

48 54-11 (Log #99) Rec. continued Table Corrugated Stainless Steel Tubing (CSST) *Table capacities are valid or any inlet gas pressure less than 2 psi with a 0.5 in. pressure drop. Gas Natural Inlet pressure psi* or Less Pressure Drop 0.5 in. WC Specific Gravity 0.60 Table Corrugated Stainless Steel Tubing (CSST) *Table capacities are valid or any inlet gas pressure less than 2 psi with a.0 in. pressure drop. Gas Natural Inlet pressure psi* or Less Pressure Drop.0 in. WC Specific Gravity 0.60 Table Corrugated Stainless Steel Tubing (CSST) *Table capacities are valid or any inlet gas pressure less than 2 psi with a 6.0 in. pressure drop. Gas Natural Inlet pressure psi* or Less Pressure Drop 6.0 in. WC Specific Gravity 0.60 Table Polyethylene Plastic Pipe Gas Natural Inlet pressure psi* or Less Pressure Drop 0. in. WC Specific Gravity 0.60 *Table capacities are valid or any inlet gas pressure less than 2 psi with a 0. in. pressure drop. Table Polyethylene Plastic Pipe Gas Natural Inlet pressure psi* or Less Pressure Drop 0.5 in. WC Specific Gravity 0.60 *Table capacities are valid or any inlet gas pressure less than 2 psi with a 0.5 in. pressure drop

49 Table Schedule 40 Metallic Pipe Gas Undiluted Propane Inlet pressure 10.0 psi Pressure Drop 1.0 psi Specific Gravity 1.50 SPECIAL USE: Pipe Sizing Between First Stage (High Pressure Regulator) and Second Stage (Low Pressure Regulator) Pipe Size (in.) Nominal Inside: 1 / / / 2 1 / 2 4 Actual: Maximum Capacity in Thousands of Btu per Hour 10,2 6,949 1,091 26,876 40,269 77,554 12, , , ,284 4,776 8,997 18,472 27,677 5,02 84, ,186 06,1 0 1,84,85 7,225 14,84 22,225 42,804 68, , ,58 245, ,570,28 6,184 12,696 19,022 6,64 58,89 10, ,12 210, ,91 2,909 5,480 11,252 16,859 2,468 51,749 91,484 1, , ,261 2,66 4,966 10,195 15,275 29,419 46,889 82, ,64 169, ,160 2,425 4,568 9,79 14,05 27,065 4,17 76, , , ,079 2,256 4,250 8,726 1,074 25,179 40,11 70,944 10, , ,012 2,117,988 8,187 12,267 2,624 7,65 66,56 97,460 15, ,000,767 7,7 11,587 22,15 5,567 62,876 92, , ,772,8 6,854 10,269 19,778 1,522 55,726 11, ,606,025 6,210 9,05 17,920 28,562 50,492 7, , ,477 2,78 5,71 8,560 16,486 26,276 46,452 94, ,74 2,589 5,15 7,964 15,7 24,445 4,214 6,272 88, ,218 2,294 4,711 7,058 1,59 21,665 8,00 56,077 78, ,104 2,079 4,268 6,95 12,16 19,60 4,70 50,810 70, ,015 1,91,927 5,88 11,1 18,060 1,926 46,744 65, ,779,65 5,47 10,541 16,801 29,701 4,487 60, ,669,428 5,15 9,890 15,764 27,867 40,802 56, ,577,28 4,851 9,42 14,890 26,2 8,541 5, ,498,075 4,607 8,87 14,142 25,001 50, ,429 2,94 4,95 8,465 1,492 2,851 4,921 48, ,68 2,809 4,209 8,106 12,920 22,840 46, ,14 2,699 4,044 7,788 12,412 21,94 2,127 44, ,266 2,600,895 7,502 11,957 21,19 4, ,22 2,511,762 7,245 11,547 20,41 29,888 41, ,18 2,40,640 7,011 11,175 19,755 40, ,147 2,56,50 6,798 10,84 19,15 28,04 9, ,114 2,288,428 6,602 10,522 18,601 7,940 1, ,084 2,225,4 6,421 10,24 18,092 26,489 6,902 1, ,084 2,225,4 6,421 9,720 17,18 6,902 1, ,029 2,11,166 6,098 9,27 16,9 5,047 1, ,016,021 5,818 8,880 15,698,46 1, ,91 2,89 5,571 8,51 15,081 2,019 1, ,787 2,677 5,156 8,218 14,528 21,272 29,6 1, ,726 2,585 4,979 7,96 14,00 28,617 1, ,670 2,502 4,819 7,680 1,577 27,69 1, ,619 2,426 4,672 7,446 1,164 26,850 1, ,572 2,56 4,57 7,22 12,784 26,076 2, ,529 2,291 4,41 7,04 12,45 18,206 25,

50 Table 12.2 Schedule 40 Metallic Pipe Gas Undiluted Propane Inlet pressure 2.0 psi Pressure Drop 1.0 psi Specific Gravity 1.50 Pipe Size (in.) Nominal 1 / / / 2 4 Actual ID Maximum Capacity in Thousands of Btu per Hour 10 2,676 5,595 10,59 21,68 2,420 62,48 99, ,927 58, ,89,845 7,24 14,872 22,282 42,91 68,97 120, , ,477,088 5,817 11,942 17,89 4,461 54,925 97, , ,264 2,64 4,978 10,221 15,14 29,494 47,009 8,10 169, ,120 2,42 4,412 9,059 1,57 26,140 41,66 7,65 150, ,015 2,122,998 8,208 12,298 2,685 7,750 66,75 16, ,952,678 7,551 11,14 21,790 4,729 61,95 125, ,816,422 7,025 10,526 20,271 2,09 57, , ,704,210 6,591 9,876 19,020 0,14 5, , ,610,0 6,226 9,29 17,966 28,65 50,621 10, ,427 2,688 5,518 8,268 15,92 25,78 44,865 91, ,29 2,45 5,000 7,491 14,427 22,995 40,651 82, ,189 2,240 4,600 6,892 1,27 21,155 7,98 76, ,106 2,084 4,279 6,411 12,48 19,681 4,792 70, ,847,79 5,682 10,944 17,442 0,85 62, ,674,46 5,149 9,916 15,804 27,99 56, ,540,161 4,77 9,122 14,540 25,70 52, ,42 2,941 4,407 8,487 1,526 2,912 48, ,44 2,759 4,15 7,96 12,691 22,46 45, ,270 2,607,905 7,522 11,988 21,19 4, ,206 2,476,709 7,144 11,86 20,128 41, ,150 2,62,59 6,815 10,862 19,202 9, ,102 2,262,89 6,526 10,402 18,89 7, ,058 2,17,255 6,270 9,99 17,666 6, ,020 2,09,16 6,040 9,627 17,019 4, ,021,029 5,8 9,297 16,45, ,956 2,91 5,645 8,997 15,904 2, ,897 2,842 5,47 8,72 15,420 1, ,842 2,760 5,15 8,471 14,976 0,545 1, ,791 2,684 5,170 8,29 14,566 29,709 1, ,701 2,549 4,910 7,825 1,84 28,216 1, ,62 2,42 4,684 7,465 1,198 26,919 1, ,554 2,29 4,485 7,149 12,68 25,778 1, ,49 2,27 4,09 6,868 12,142 24,765 1, ,49 2,156 4,151 6,617 11,697 2,858 1, ,89 2,082 4,009 6,89 11,295 2,09 1, ,44 2,014,880 6,18 10,91 22,296 1, ,04 1,95,761 5,995 10,598 21,617 1, ,266 1,897,65 5,822 10,29 20,994 2, ,21 1,845,55 5,66 10,011 20,

51 54-11 (Log #99) Rec. continued Table Schedule 40 Metallic Pipe Gas Undiluted Propane Inlet pressure 11.0 in. WC Pressure Drop 0.5 in. WC Specific Gravity 1.50 SPECIAL USE: Pipe Sizing Between Single or Second Stage (Low Pressure Regulator) and Appliance. Pipe Size (in.) Nominal Inside: 1 / / / 2 1 / 2 4 Actual: Maximum Capacity in Thousands of Btu per Hour ,145 2,52,52 6,786 10,815 19,119 27,99 8, ,616 2,422 4,664 7,4 1,141 19,240 26, ,298 1,945,745 5,969 10,552 15,450 21, ,111 1,664,205 5,109 9,01 1,22 18, ,475 2,841 4,528 8,004 11,720 16, ,7 2,574 4,10 7,25 10,619 14, ,144 2,20,774 6,207 9,088 12, ,014 1,952,511 5,501 8,055 11, ,70,295 4,876 7,19 9, ,568,112 4,418 6,468 9, ,758 4,064 8, ,42 2,499,781 5,56 7, ,189 2,299,51 4,906 6, ,078 2,19,06 4,446 6, ,896 2,79 4,090 5, ,718 2,599,805 5, ,79 2,48 4, ,0 2,0 4, ,27 2,187 4, ,180 2,087 4, ,10 1,998 4, ,086 1,920, ,046 1,850, ,010 1,786, ,728, ,676, ,628,20 1, ,58,229 1, ,50,067 1, ,44 2,926 1, ,74 2,802 1, ,20 2,691 1, ,271 2,59 1, ,228 2,504 1, ,188 2,42 1, ,152 2,49 1, ,119 2,282 2, ,088 2,

52 54-11 (Log #99) Rec. continued Table Semi-Rigid Copper Tubing Gas Undiluted Propane Inlet pressure 10.0 psi Pressure Drop 1.0 psi Specific Gravity 1.50 SPECIAL USE: Sizing Between First Stage (High Pressure Regulator) and Second Stage (Low Pressure Regulator) Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Thousands of Btu per Hour ,058 2,152,760 5,5 11,96 20,516 2,47 67,71 119, ,479 2,585,667 7,82 14,101 22,22 46,0 81, ,188 2,075 2,944 6,290 11,2 17,85 7,18 65, ,016 1,776 2,520 5,8 9,691 15,280 1,824 56, ,574 2,24 4,771 8,589 1,542 28,205 49, ,426 2,024 4,2 7,782 12,270 25,556 45, ,12 1,862,977 7,160 11,288 2,511 41, ,221 1,72,700 6,661 10,502 21,87 8, ,145 1,625,471 6,250 9,85 20,522 6, ,082 1,55,279 5,90 9,07 19,85 4, ,61 2,906 5,22 8,249 17,181 0, ,2 2,6 4,741 7,474 15,567 27, ,14 2,42 4,61 6,876 14,21 25, ,055 2,254 4,057 6,97 1,2 2, ,115,807 6,002 12,501 22, ,997,596 5,669 11,808 20, ,897,415 5,85 11,215 19, ,810,258 5,17 10,699 18, ,665 2,997 4,726 9,84 17, ,549 2,789 4,97 9,157 16, ,45 2,616 4,125 8,592 15, ,7 2,471,897 8,116 14, ,04 2,47,701 7,708 1, ,244 2,29,51 7,5 1, ,191 2,144,81 7,042 12, ,144 2,060,248 6,765 11, ,102 1,985,129 6,517 11, ,065 1,917,022 6,294 11, ,00 1,855 2,924 6,091 10, ,798 2,85 5,905 10, ,746 2,75 5,75 10,146 1, ,699 2,678 5,578 9,868 1, ,61 2,544 5,298 9,7 1, ,59 2,427 5,054 8,942 1, ,474 2,24 4,840 8,56 1, ,416 2,22 4,650 8,226 1, ,64 2,151 4,479 7,925 1, ,17 2,077 4,26 7,65 1, ,275 2,010 4,186 7,406 1, ,26 1,949 4,059 7,180 1, ,200 1,892,942 6,97 2, ,167 1,841,84 6,78 Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products

53 54-11 (Log #99) Rec. continued Table Semi-Rigid Copper Tubing Gas Undiluted Propane Inlet pressure 11.0 in. WC Pressure Drop 0.5 in. WC Specific Gravity 1.50 SPECIAL USE: Sizing Between Single or Second Stage (Low Pressure Regulator) and Appliance Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Thousands of Btu per Hour ,795 2,80 5,895 10, ,24 1,945 4,051 7, ,562,25 5, ,7 2,784 4, ,185 2,468 4, ,074 2,26, ,057, ,914, ,796, ,696, ,50 2, ,62 2, NR ,25 2, NR ,166 2, NR ,094 1, NR ,0 1, NR ,76 00 NR , NR ,524 NR ,418 NR ,0 NR ,256 NR ,19 NR ,18 NR 650 NR ,090 NR 700 NR ,047 NR 750 NR ,009 NR 800 NR NR 850 NR NR 900 NR NR 950 NR NR 1,000 NR NR 1,100 NR NR 1,200 NR NR 1,00 NR NR 1,400 NR NR 1,500 NR NR 1,600 NR NR 1,700 NR NR 1,800 NR NR 1,900 NR NR 2,000 NR Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products. 54-5

54 54-11 (Log #99) Rec. continued Table Semi-Rigid Copper Tubing Gas Undiluted Propane Inlet pressure 2.0 psi Pressure Drop 1.0 psi Specific Gravity 1.50 Nominal: Tube Size (in.) K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Thousands of Btu per Hour ,72,027 4,295 9,175 16,517 26,042 54,240 95, ,191 2,081 2,952 6,06 11,52 17,899 7,279 65, ,671 2,71 5,064 9,116 14,7 29,96 52, ,40 2,029 4,4 7,802 12,02 25,621 45, ,267 1,798,841 6,915 10,90 22,708 40, ,148 1,629,480 6,266 9,879 20,575 6, ,057 1,499,202 5,764 9,088 18,929, ,94 2,979 5,6 8,455 17,609 1, ,08 2,795 5,01 7,9 16,522 29, ,26 2,640 4,75 7,49 15,607 27, ,095 2,40 4,212 6,641 1,82 24, ,120,817 6,017 12,5 22, ,950,511 5,56 11,50 20, ,814,267 5,150 10,727 18, ,702,065 4,82 10,064 17, ,608 2,895 4,564 9,507 16, ,527 2,750 4,5 9,029 15, ,457 2,62 4,16 8,614 15, ,40 2,41,805 7,925 14, ,247 2,245,540 7,72 1, ,170 2,106,21 6,917 12, ,105 1,990,17 6,54 11, ,050 1,890 2,979 6,206 10, ,001 1,80 2,842 5,920 10, ,726 2,722 5,669 10, ,659 2,615 5,447 9, ,598 2,519 5,247 9, ,54 2,4 5,067 8, ,49 2,54 4,90 8, ,448 2,28 4,754 8, ,406 2,217 4,617 8,169 1, ,68 2,156 4,491 7,945 1, ,299 2,048 4,265 7,546 1, ,29 1,954 4,069 7,199 1, ,187 1,871,896 6,894 1, ,140 1,797,74 6,62 1, ,098 1,71,606 6,80 1, ,061 1,672,482 6,161 1, ,026 1,618,70 5,962 1, ,569,267 5,781 1, ,524,17 5,614 2, ,482,086 5,461 Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products

55 54-11 (Log #99) Rec. continued 54-55

56 54-11 (Log #99) C. A. Table 12.1 Schedule 40 Metallic Pipe Gas Natural Inlet pressure 0.50 psi or less Pressure Drop 0. in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal 1 1 / / / 2 4 Actual ID Table 12.2 Maximum Capacity in Cubic Feet of Gas per Hour ,050 1,600,050 4,800 8,500 17, ,100 2,100,00 5,900 12, ,650 2,700 4,700 9, ,450 2,00 4,100 8, ,270 2,000,600 7, ,150 1,850,250 6, ,050 1,700,000 6, ,600 2,800 5, ,500 2,600 5, ,400 2,500 5, ,250 2,200 4, ,10 2,000 4, ,050 1,850, ,700,500 Schedule 40 Metallic Pipe Gas Natural Inlet pressure 0.50 psi or less Pressure Drop 0.5 in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal 1 1 / / / 2 4 Actual ID Maximum Capacity in Cubic Feet of Gas per Hour ,400 2,100,950 6,00 11,000 2, ,460 2,750 4,50 7,700 15, ,180 2,200,520 6,250 12, ,900,000 5,00 10, ,680 2,650 4,750 9, ,520 2,400 4,00 8, ,400 2,250,900 8, ,00 2,050,700 7, ,220 1,950,450 7, ,150 1,850,250 6, ,020 1,650 2,950 6, ,500 2,650 5, ,70 2,450 5, ,280 2,280 4,

57 54-11 (Log #99) C. A. continued Table 12.5 Schedule 40 Metallic Pipe Gas Natural Inlet pressure 1.0 psi or less Pressure Drop 0. in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal / / 2 1 / Actual ID Table 12.6 Maximum Capacity in Cubic Feet of Gas per Hour ,275 2,0,594 5,262 7,0 1,261 21,472 44,118 80,10 126, ,97 2,470,616 5,08 9,114 14,758 0,22 55,07 87, ,122 1,98 2,904 4,046 7,19 11,851 24,50 44,225 70, ,698 2,485,462 6,264 10,14 20,840 7,851 59, ,505 2,20,069 5,552 8,990 18,470,547 5, ,6 1,996 2,780 5,00 8,145 16,75 0,96 48, ,167 1,708 2,80 4,05 6,971 14,2 26,015 41, ,04 1,514 2,109,816 6,178 12,694 2,056 6,501 1, ,041 1,450 2,62 4,246 8,725 15,847 25,087 1, ,164 2,106,410 7,006 12,725 20,146 2, ,802 2,919 5,997 10,891 17,242 Schedule 40 Metallic Pipe Gas Natural Inlet pressure 1.0 psi or less Pressure Drop 0.5 in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal / / 2 1 / Actual ID Maximum Capacity in Cubic Feet of Gas per Hour ,681 2,680 4,78 6,97 9,66 17,482 28,08 58, ,66 167, ,156 1,842,256 4,767 6,641 12,015 19,456 9,974 72,60 114, ,479 2,615,828 5, 9,649 15,624 2,100 58,0 92, ,266 2,28,277 4,565 8,258 1,72 27,474 49,900 78, ,122 1,98 2,904 4,046 7,19 11,851 24,50 44,225 70, ,017 1,797 2,61,666 6,62 10,78 22,062 40,071 6, ,58 2,252,17 5,676 9,190 18,88 4,296 54, ,6 1,996 2,780 5,00 8,145 16,75 0,96 48,120 1, ,72 1,911,457 5,598 11,502 20,891,07 1, ,102 1,55 2,776 4,496 9,27 16,776 26,559 2, ,1 2,76,848 7,905 14,58 22,

58 54-11 (Log #99) C. A. continued Table 12.1 Schedule 40 Metallic Pipe Gas Natural Inlet pressure Less than 2 psi Pressure Drop 0. in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal 1 / / / Actual ID Capacity in Cubic Feet of Gas per Hour ,060 1,580,050 4,860 8,580 17,500 1,700 51,00 105, ,000 0, ,090 2,090,40 5,900 12,000 21,800 5,00 72,400 12, , ,680 2,680 4,740 9,660 17,500 28,00 58, , , ,440 2,290 4,050 8,270 15,000 24,200 49,800 90,400 14, ,280 2,00,590 7,0 1,00 21,500 44,100 80, , ,160 1,840,260 6,640 12,000 19,500 40,000 72, , ,060 1,690,000 6,110 11,100 17,900 6,800 66, , ,580 2,790 5,680 10,00 16,700 4,200 62,100 98, ,480 2,610 5,0 9,650 15,600 2,100 58,00 92, ,400 2,470 5,040 9,110 14,800 0,00 55,100 87, ,240 2,190 4,460 8,080 1,100 26,900 48,800 77, ,120 1,980 4,050 7,20 11,900 24,00 44,200 70, ,00 1,820,720 6,70 10,900 22,400 40,700 64, ,700,460 6,260 10,100 20,800 7,900 59, ,500,070 5,550 8,990 18,500,500 5, ,60 2,780 5,00 8,150 16,700 0,400 48, ,250 2,560 4,60 7,490 15,400 28,000 44, ,170 2,80 4,10 6,970 14,00 26,000 41, ,090 2,20 4,040 6,540 1,400 24,400 8, ,00 2,110,820 6,180 12,700 2,100 6, ,000,620 5,870 12,100 21,900 4, ,910,460 5,600 11,500 20,900, ,80,10 5,60 11,000 20,000 1, ,760,180 5,150 10,600 19,200 0, ,690,060 4,960 10,200 18,500 29, ,640 2,960 4,790 9,840 17,900 28, ,580 2,860 4,640 9,50 17,00 27, ,50 2,780 4,500 9,240 16,800 26, ,490 2,700 4,70 8,970 16,00 25,800 1, ,450 2,620 4,250 8,720 15,800 25,100 1, ,80 2,490 4,00 8,290 15,100 2,800 1,200 NA ,10 2,80,850 7,910 14,400 22,700 1,00 NA ,260 2,280,680 7,570 1,700 21,800 1,400 NA ,210 2,190,540 7,270 1,200 20,900 1,500 NA ,160 2,110,410 7,010 12,700 20,100 1,600 NA ,120 2,00,290 6,770 12,00 19,500 1,700 NA ,090 1,970,190 6,550 11,900 18,800 1,800 NA ,050 1,910,090 6,50 11,500 18,00 1,900 NA ,020 1,850,000 6,170 11,200 17,700 2,000 NA ,000 1,800 2,920 6,000 10,900 17,200 NA means a flow of less than 10 cfh 54-58

59 54-11 (Log #99) C. A. continued Table 12.2 Schedule 40 Metallic Pipe Gas Natural Inlet pressure Less than 2 psi Pressure Drop 0.5 in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal 1 / / / Actual ID Capacity in Cubic Feet of Gas per Hour ,90 2,090 4,020 6,400 11,00 2,100 41,800 67,600 19, ,000 99, ,40 2,760 4,400 7,780 15,900 28,700 46,500 95,500 17, , ,150 2,220,50 6,250 12,700 2,000 7,00 76,700 19, , ,900,020 5,50 10,900 19,700 1,900 65, , , ,680 2,680 4,740 9,660 17,500 28,00 58, , , ,520 2,40 4,290 8,760 15,800 25,600 52,700 95, , ,400 2,20,950 8,050 14,600 2,600 48,500 88,100 19, ,00 2,080,670 7,490 1,600 22,000 45,100 81,900 10, ,220 1,950,450 7,00 12,700 20,600 42,00 76, , ,160 1,840,260 6,640 12,000 19,500 40,000 72, , ,020 1,60 2,890 5,890 10,600 17,200 5,400 64,00 102, ,480 2,610 5,0 9,650 15,600 2,100 58,00 92, ,60 2,410 4,910 8,880 14,400 29,500 5,600 84, ,270 2,240 4,560 8,260 1,400 27,500 49,900 79, ,120 1,980 4,050 7,20 11,900 24,00 44,200 70, ,020 1,800,670 6,60 10,700 22,100 40,100 6, ,650,70 6,100 9,880 20,00 6,900 58, ,540,140 5,680 9,190 18,900 4,00 54, ,440 2,940 5,0 8,620 17,700 2,200 50, ,60 2,780 5,00 8,150 16,700 0,400 48, ,290 2,640 4,780 7,740 15,900 28,900 45, ,240 2,520 4,560 7,80 15,200 27,500 4, ,180 2,410 4,60 7,070 14,500 26,400 41, ,140 2,20 4,190 6,790 14,000 25,00 40, ,090 2,20 4,040 6,540 1,400 24,400 8, ,060 2,160,900 6,20 1,000 2,600 7, ,020 2,090,780 6,110 12,600 22,800 6, ,020,660 5,90 12,200 22,100 5, ,960,550 5,760 11,800 21,500 4,000 1, ,910,460 5,600 11,500 20,900,100 1, ,810,280 5,20 10,900 19,800 1,400 1, ,70,10 5,070 10,400 18,900 0,000 1, ,660,000 4,860 9,980 18,100 28,700 1, ,590 2,880 4,670 9,590 17,400 27,600 1, ,50 2,780 4,500 9,240 16,800 26,600 1, ,480 2,680 4,40 8,920 16,200 25,600 1, ,40 2,590 4,200 8,60 15,700 24,800 1, ,90 2,520 4,070 8,70 15,200 24,100 1, ,50 2,440,960 8,10 14,800 2,400 2,000 NA 20 NA means a flow of less than 10 cfh ,10 2,80,850 7,910 14,400 22,

60 54-11 (Log #99) C. A. continued Table 12. Schedule 40 Metallic Pipe Gas Natural Inlet pressure 2.0 psi Pressure Drop 1.0 psi Specific Gravity 0.60 Pipe Size (in.) Nominal 1 / / / 2 4 Actual ID Maximum Capacity in Cubic Feet of Gas per Hour 10 1,506,041 5,561 11,415 17,106 2,944 52,505 92, , ,065 2,150,92 8,072 12,096 2,295 7,127 65,6 1, ,756,211 6,591 9,876 19,020 0,14 5, , ,521 2,781 5,708 8,55 16,472 26,25 46,410 94, ,60 2,487 5,105 7,650 14,7 2,481 41,510 84, ,241 2,270 4,660 6,98 1,449 21,45 7,89 77, ,150 2,102 4,15 6,465 12,452 19,845 5,082 71, ,075 1,966 4,06 6,048 11,647 18,56 2,817 66, ,014 1,854,805 5,702 10,981 17,502 0,940 6, ,708,508 5,257 10,125 16,18 28,50 58, ,528,18 4,702 9,056 14,44 25,518 52, ,7 2,817 4,222 8,10 12,960 22,911 46, ,271 2,608,909 7,527 11,999 21,211 4, ,174 2,41,61 6,959 11,09 19,608 9, ,510,040 5,560 11,400 17,100 2,900 52,500 92, , ,070 2,150,90 8,070 12,100 2,00 7,100 65,600 14, ,760,210 6,590 9,880 19,000 0,00 5, , ,520 2,780 5,710 8,550 16,500 26,00 46,400 94, ,60 2,490 5,110 7,650 14,700 2,500 41,500 84, ,240 2,270 4,660 6,980 1,500 21,400 7,900 77, ,150 2,100 4,20 6,470 12,500 19,900 5,100 71, ,080 1,970 4,040 6,050 11,700 18,600 2,800 67, ,010 1,850,810 5,700 11,000 17,500 0,900 6, ,710,510 5,260 10,100 16,100 28,500 58, ,50,140 4,700 9,060 14,400 25,500 52, ,70 2,820 4,220 8,10 1,000 22,900 46, ,270 2,601,910 7,50 12,000 21,200 4, ,170 2,410,610 6,960 11,100 19,600 40, ,040 2,140,210 6,180 9,850 17,400 5, ,940 2,910 5,600 8,920 15,800 2, ,790 2,670 5,150 8,210 14,500 29, ,660 2,490 4,790 7,640 1,500 27, ,560 2,0 4,500 7,170 12,700 25, ,470 2,210 4,250 6,770 12,000 24, ,400 2,090 4,00 6,40 11,400 2, ,0 2,000,850 6,10 10,800 22, ,280 1,910,680 5,870 10,400 21, ,20 1,840,540 5,640 9,970 20, ,180 1,770,410 5,440 9,610 19, ,140 1,710,290 5,250 9,280 18, ,100 1,650,190 5,080 8,980 18, ,070 1,600,090 4,90 8,710 17, ,040 1,560,000 4,780 8,460 17, ,010 1,520 2,920 4,650 8,220 16, ,440 2,770 4,420 7,810 15, ,70 2,640 4,220 7,450 15, ,20 2,50 4,040 7,140 14, ,260 2,40,880 6,860 14, ,220 2,40,740 6,600 1, ,180 2,260,610 6,80 1, ,140 2,190,490 6,170 12, ,100 2,120,90 5,980 12, ,070 2,060,290 5,810 11, ,040 2,010,200 5,650 11,

61 54-11 (Log #99) C. A. continued Table 12.4 Schedule 40 Metallic Pipe Gas Natural Inlet pressure 5.0 psi Pressure Drop.5 psi Specific Gravity 0.60 Pipe Size (in.) Nominal 1 / / / 2 4 Actual ID Maximum Capacity in Cubic Feet of Gas per Hour 10,185 6,44 11,766 24,161 6,206 69, ,1 196, , ,252 4,550 8,20 17,084 25,602 49,05 78,58 18,924 28,61 0 1,89,715 6,79 1,949 20,904 40,257 64,162 11,41 21,6 40 1,59,217 5,88 12,080 18,10 4,864 55,566 98,24 200, ,425 2,878 5,262 10,805 16,192 1,18 49,700 87,86 179, ,01 2,627 4,804 9,864 14,781 28,466 45,70 80,208 16, ,204 2,42 4,447 9,12 1,685 26,54 42,004 74, , ,15 2,0 4,260 8,542 12,801 24,652 9,291 69, , ,062 2,145,922 8,054 12,069 2,242 7,044 65,489 1, ,978,617 7,427 11,128 21,4 4,159 60,87 12, ,769,25 6,64 9,95 19,170 0,55 54, , ,589 2,905 5,964 8,97 17,211 27,41 48,494 98, ,471 2,690 5,522 8,274 15,94 25,96 44,897 91, ,60 2,487 5,104 7,649 14,729 2,478 41,504 84,656 10,190 6,40 11,800 24,200 6,200 69, , , , ,250 4,550 8,20 17,100 25,600 49,00 78,600 19,000 28, ,840,720 6,790 14,000 20,900 40,00 64,200 11,000 21, ,590,220 5,880 12,100 18,100 4,900 55,600 98, , ,40 2,880 5,260 10,800 16,200 1,200 49,700 87, , ,00 2,60 4,800 9,860 14,800 28,500 45,400 80, , ,200 2,40 4,450 9,10 1,700 26,400 42,000 74,00 151, ,150 2,0 4,260 8,540 12,800 24,700 9,00 69, , ,060 2,150,920 8,050 12,100 2,200 7,000 65,500 14, ,980,620 7,40 11,100 21,400 4,200 60,400 12, ,770,240 6,640 9,950 19,200 0,600 54, , ,590 2,910 5,960 8,940 17,200 27,400 48,500 98, ,470 2,690 5,520 8,270 15,900 25,400 44,900 91, ,60 2,490 5,100 7,650 14,700 2,500 41,500 84, ,170 2,200 4,510 6,760 1,000 20,800 6,700 74, ,060 1,990 4,090 6,10 11,800 18,800,00 67, ,80,760 5,640 10,900 17,00 0,600 62, ,710,500 5,250 10,100 16,100 28,500 58, ,600,290 4,920 9,480 15,100 26,700 54, ,510,100 4,650 8,950 14,00 25,200 51, ,440 2,950 4,420 8,500 1,600 24,000 48, ,70 2,810 4,210 8,110 12,900 22,900 46, ,10 2,690 4,00 7,770 12,400 21,900 44, ,260 2,590,880 7,460 11,900 21,000 42, ,210 2,490,70 7,190 11,500 20,00 41, ,170 2,410,610 6,940 11,100 19,600 9, ,10 2,0,490 6,720 10,700 18,900 8, ,100 2,260,80 6,520 10,400 18,400 7, ,070 2,190,290 6,0 10,100 17,800 6,400 1, ,040 2,10,200 6,150 9,810 17,00 5,400 1, ,00,00 5,840 9,20 16,500,600 1, ,90 2,900 5,580 8,890 15,700 2,000 1, ,850 2,770 5,40 8,510 15,000 0,700 1, ,780 2,660 5,10 8,180 14,500 29,500 1, ,710 2,570 4,940 7,880 1,900 28,400 1, ,650 2,480 4,770 7,610 1,400 27,400 1, ,600 2,400 4,620 7,60 1,000 26,500 1, ,550 2,0 4,480 7,140 12,600 25,700 1, ,510 2,260 4,50 6,90 12,00 25,000 2, ,470 2,200 4,20 6,740 11,900 24,

62 Table 12.7 Semi-Rigid Copper Tubing Tube Size (in.) Gas Natural Inlet pressure 0.5 psi or less Less than 2 psi Pressure Drop 0. in. WC Specific Gravity 0.60 Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Cubic Feet of Gas per Hour ,271 2,646 4, ,819, ,461 2, ,250 2, ,108 1, ,004 1, , , , , , , ,270 2, , , , NA , NA , NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA ,000 NA NA NA ,100 NA NA NA ,200 NA NA NA ,00 NA NA NA ,400 NA NA NA ,500 NA NA NA NA ,600 NA NA NA NA ,700 NA NA NA NA ,800 NA NA NA NA ,900 NA NA NA NA ,000 NA NA NA NA Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products. 266 NA means a flow of less than 10 cfh

63 Gas Natural Table 12.8 Semi-Rigid Copper Tubing Inlet pressure 0.5 psi or less Less than 2 psi Pressure Drop 0.5 in. WC Specific Gravity 0.60 Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Cubic Feet of Gas per Hour ,062 1,675,489 6, ,151 2,98 4, ,926, ,648 2, ,461 2, ,2 2, ,218 2, ,1 2, ,06 1, ,004 1, , , , , , ,060 1,680, ,150 2, , , , ,20 70 NA , NA ,10 90 NA , NA , NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA ,000 NA NA NA ,100 NA NA NA ,200 NA NA NA ,00 NA NA NA ,400 NA NA NA ,500 NA NA NA ,600 NA NA NA ,700 NA NA NA ,800 NA NA NA ,900 NA NA NA ,000 NA NA NA Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products NA means a flow of less than 10 cfh. 54-6

64 Gas Natural 0.5 psi or less Table 12.9 Semi-Rigid Copper Tubing Inlet pressure Less than 2 psi Pressure Drop 1.0 in. WC Specific Gravity 0.60 SPECIAL USE: Use this Table to Size Tubing from House Line Regulator to the Appliance. Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Cubic Feet of Gas per Hour ,546 2,47 5,076 8, ,062 1,675,489 6, ,45 2,802 4, ,151 2,98 4, ,020 2,125, ,926, ,772, ,648 2, ,546 2, ,461 2, ,295 2, ,17 2, ,079 1, ,004 1, , , ,550 2,440 5, ,060 1,680, ,50 2, ,150 2, ,020 2, , , , , , NA , NA , NA , NA , NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA ,000 NA NA ,100 NA NA ,200 NA NA ,00 NA NA ,400 NA NA ,500 NA NA ,600 NA NA ,700 NA NA ,800 NA NA NA ,900 NA NA NA ,000 NA NA means a flow of less than 10 cfh. NA NA

65 Table Semi-Rigid Copper Tubing Gas Natural Inlet pressure Less than 2.0 psi or less Pressure Drop 17.0 in. WC Specific Gravity 0.60 Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Cubic Feet of Gas per Hour ,91 1,974 4,216 7,591 11,968 24,926 44, ,57 2,898 5,217 8,226 17,12 0, ,089 2,27 4,189 6,605 1,757 24, ,992,586 5,65 11,775 20, ,765,178 5,010 10,46 18, ,599 2,879 4,540 9,455 16, ,471 2,649 4,177 8,699 15, ,69 2,464,886 8,09 14, ,284 2,12,646 7,59 1, ,21 2,184,444 7,172 12, ,075 1,96,052 6,57 11, ,754 2,765 5,760 10, ,614 2,544 5,299 9, ,501 2,67 4,90 8, ,0 2,098 4,69 7, ,205 1,901,959 7, ,90 1,970 4,220 7,590 12,000 24, ,60 2,900 5,220 8,20 17, ,090 2,0 4,190 6,610 1, ,990,590 5,650 11, ,770,180 5,010 10, ,600 2,880 4,540 9, ,470 2,650 4,180 8, ,70 2,460,890 8, ,280 2,10,650 7, ,000 1,100 1,200 1,00 1,400 1,500 1,600 1,700 1,800 1,900 2, ,210 2,180,440 7, ,080 1,940,050 6, ,750 2,770 5, ,610 2,540 5, ,500 2,70 4, ,0 2,100 4, ,210 1,900, ,110 1,750, ,00 1,60, ,50, ,440, ,70 2, ,10 2, ,250 2, ,200 2, ,160 2, ,120 2, ,080 2, ,050 2, ,020 2, , , , , , , , , , , ,

66 Gas Natural Table Semi-Rigid Copper Tubing Inlet pressure 2.0 psi or less Pressure Drop 1.0 psi Specific Gravity 0.60 Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Cubic Feet of Gas per Hour ,00 1,800 2,554 5,455 9,820 15,48 2,247 57, ,27 1,755,749 6,749 10,641 22,16 9, ,409,011 5,420 8,545 17,798 1, ,206 2,577 4,69 7,14 15,22 26, ,069 2,284 4,111 6,482 1,500 2, ,069,725 5,87 12,22 21, ,904,427 5,40 11,25 19, ,771,188 5,027 10,469 18, ,662 2,991 4,716 9,82 17, ,570 2,826 4,455 9,279 16, ,91 2,504,948 8,22 14, ,260 2,269,577 7,451 1, ,160 2,087,291 6,855 12, ,079 1,942,062 6,77 11, ,721 2,714 5,652 10, ,559 2,459 5,121 9, ,00 1,800 2,550 5,450 9,820 15,500 2, ,240 1,760,750 6,750 10,600 22, ,410,010 5,420 8,550 17, ,210 2,580 4,640 7,10 15, ,070 2,280 4,110 6,480 1, ,070,70 5,870 12, ,900,40 5,400 11, ,770,190 5,00 10, ,660 2,990 4,720 9, ,570 2,80 4,450 9, ,90 2,500,950 8, ,260 2,270,580 7, ,160 2,090,290 6, ,080 1,940,060 6, ,720 2,710 5, ,560 2,460 5, ,40 2,260 4, ,0 2,100 4, ,250 1,970 4, ,180 1,870, ,120 1,770, ,070 1,690, ,00 1,620, ,550, ,500, ,450, ,400 2, ,60 2, ,20 2,740 1, ,280 2,670 1, ,220 2,540 1, ,160 2,420 1, ,110 2,20 1, ,070 2,20 1, ,00 2,140 1, ,070 1, ,000 1, ,940 1, ,890 2, ,

67 Gas Natural Table Semi-Rigid Copper Tubing Inlet pressure 2.0 psi Pressure Drop 1.5 psi Specific Gravity 0.60 SPECIAL USE: Pipe Sizing Between Point of Delivery and the House Line Regulator. Total Load Supplied by a Single House Line Regulator Not Exceeding 150 Cubic Feet per Hour. 2 Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside 1 : Maximum Capacity in Cubic Feet of Gas per Hour ,272 2,224,155 6,79 12,11 19,127 9,87 70, ,528 2,168 4,61 8,8 1,146 27,80 48, ,227 1,741,719 6,696 10,557 21,987 8, ,050 1,490,18 5,71 9,05 18,818, ,21 2,821 5,079 8,008 16,678 29, ,197 2,556 4,602 7,256 15,112 26, ,101 2,52 4,24 6,675 1,90 24, ,024 2,188,99 6,210 12,94 22, ,05,695 5,826 12,15 21, ,99,491 5,504 11,46 20, ,718,094 4,878 10,159 17, ,557 2,80 4,420 9,205 16, ,42 2,579 4,066 8,469 14, , 2,99,78 7,878 1, ,181 2,126,52 6,982 12, ,070 1,927,08 6,27 11, ,270 2,220,150 6,740 12,100 19,100 9, ,50 2,170 4,60 8,0 1,100 27, ,20 1,740,720 6,690 10,600 22, ,050 1,490,180 5,70 9,00 18, ,20 2,820 5,080 8,000 16, ,200 2,560 4,600 7,250 15, ,100 2,50 4,20 6,670 1, ,020 2,190,940 6,210 12, ,050,690 5,820 12, ,940,490 5,500 11, ,720,090 4,880 10, ,560 2,800 4,420 9, ,40 2,580 4,060 8, ,0 2,400,780 7, ,180 2,10,50 6, ,070 1,90,040 6, ,000 1,100 1,200 1,00 1,400 1,500 1,600 1,700 1,800 1,900 2, ,770 2,790 5, ,650 2,600 5, ,550 2,440 5, ,460 2,00 4, ,90 2,190 4, ,20 2,090 4, ,270 2,000 4, ,220 1,920 4, ,170 1,850, ,10 1,790, ,100 1,70, ,060 1,680, ,00 1,60, ,000 1,580, ,500, ,40 2, ,70 2, ,20 2, ,270 2, ,20 2, ,190 2, ,150 2, ,120 2, ,090 2,

68 54-11 (Log #99) C. A. continued Gas Inlet pressure Natural 5.0 psi or less Table 12.1 Semi-Rigid Copper Tubing Pressure Drop.5 psi Specific Gravity 0.60 Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Cubic Feet of Gas per Hour ,054 2,144,747 5,15 11,54 20,441 2,229 67, , ,47 2,575,65 7,804 14,049 22,151 46,15 81, ,18 2,068 2,94 6,267 11,282 17,788 7,048 65, ,01 1,770 2,511 5,64 9,656 15,224 1,708 56, ,569 2,225 4,754 8,558 1,49 28,102 49, ,421 2,016 4,07 7,754 12,225 25,46 45, ,08 1,855,962 7,14 11,247 2,425 41, ,216 1,726,686 6,66 10,46 21,79 8, ,141 1,619,459 6,227 9,817 20,447 6, ,078 1,529,267 5,882 9,27 19,15 4, ,56 2,896 5,21 8,219 17,118 0, ,228 2,624 4,72 7,447 15,510 27, ,10 2,414 4,45 6,851 14,269 25, ,051 2,245 4,042 6,74 1,275 2, ,990,58 5,649 11,765 20, ,80,246 5,118 10,660 18, ,050 2,140,750 5,20 11,400 20,400 2,200 67, ,470 2,580,650 7,800 14,000 22,200 46, ,180 2,070 2,90 6,270 11,00 17,800 7, ,010 1,770 2,510 5,60 9,660 15,200 1, ,570 2,20 4,750 8,560 1,500 28, ,420 2,020 4,10 7,750 12,200 25, ,10 1,860,960 7,10 11,200 2, ,220 1,70,690 6,640 10,500 21, ,140 1,620,460 6,20 9,820 20, ,080 1,50,270 5,880 9,270 19, ,60 2,900 5,210 8,220 17, ,20 2,620 4,720 7,450 15, ,10 2,410 4,50 6,850 14, ,050 2,250 4,040 6,70 1, ,990,580 5,650 11, ,800,250 5,120 10, ,660 2,990 4,710 9, ,540 2,780 4,80 9, ,450 2,610 4,110 8, ,70 2,460,880 8, ,00 2,40,690 7, ,240 2,20,520 7, ,190 2,140,70 7, ,140 2,050,240 6, ,100 1,980,120 6, ,060 1,910,010 6, ,00 1,850 2,910 6, ,000 1,790 2,820 5, ,740 2,740 5, ,690 2,670 5,560 1, ,610 2,50 5,280 1, ,50 2,420 5,040 1, ,470 2,20 4,820 1, ,410 2,220 4,60 1, ,60 2,140 4,460 1, ,10 2,070 4,10 1, ,270 2,000 4,170 1, ,20 1,940 4,040 1, ,200 1,890,90 1, ,160 1,80,820 2,

69 54-11 (Log #99) C. A. continued Table Corrugated Stainless Steel Tubing (CSST) Gas Natural Inlet pressure 0.5 psi or less Less than 2 psi Pressure Drop 0.5 in. WC Specific Gravity 0.60 Tube Size (EHD*) Flow Designation: Maximum Capacity in Cubic Feet of Gas per Hour ,790 4, ,261 2, ,027 2, , , , , , , , , ,790 4, ,260 2, ,00 2, , , , , , , , , Table Corrugated Stainless Steel Tubing (CSST) Gas Natural 0.5 psi or less Less Inlet pressure than 2 psi Pressure Drop.0 in. WC Specific Gravity 0.60 Tube Size (EHD*) Flow Designation: Maximum Capacity in Cubic Feet of Gas per Hour ,182 1,65 2,141 4,428 10, ,528,199 7, ,254 2,541 5, ,090 2,197 5, ,96 4, ,790 4, ,548, ,8, ,261 2, ,166 2, ,090 2, ,027 2, , , , , , ,180 1,70 2,140 4,40 10, ,50,200 7, ,250 2,540 5, ,090 2,200 5, ,960 4, ,790 4, ,550, ,80, ,260 2, ,170 2, ,090 2, ,00 2, , , , , ,

70 54-11 (Log #99) C. A. continued Table Corrugated Stainless Steel Tubing (CSST) Gas Natural 0.5 psi or less Less Inlet pressure than 2 psi Pressure Drop 6.0 in. WC Specific Gravity 0.60 Tube Size (EHD*) Flow Designation: Maximum Capacity in Cubic Feet of Gas per Hour ,687 1,946,000 6,282 14, ,182 1,65 2,141 4,428 10, ,110 1,758,607 8, ,528,119 7, ,71 2,786 6, ,254 2,541 5, ,090 2,197 5, ,96 4, ,790 4, ,656, ,548, ,458, ,8, ,126 2, , , , ,690 1,950,000 6,280 14, ,180 1,70 2,140 4,40 10, ,110 1,760,610 8, ,50,120 7, ,70 2,790 6, ,250 2,540 5, ,090 2,200 5, ,960 4, ,790 4, ,660, ,550, ,460, ,80, ,10 2, , , ,860 Table Corrugated Stainless Steel Tubing (CSST) Gas Natural Inlet pressure 2.0 psi Pressure Drop 1.0 psi Specific Gravity 0.60 Tube Size (EHD*) Flow Designation: Maximum Capacity in Cubic Feet of Gas per Hour ,098 1,72 2,592 2,986 4,509 9,599 21, ,620 1,869 2,887 6,041 1, ,475 1,70 2,642 5,509 12, ,27 1,470 2,297 4,76 10, ,15 1,11 2,061 4,255 9, ,066 1,692,467 7, ,01 1,69,55 7, ,471 2,997 6, ,207 2,442 5, ,049 2,111 4, ,886 4, ,720, ,487, ,29, ,100 1,70 2,590 2,990 4,510 9,600 21, ,620 1,870 2,890 6,040 1, ,480 1,700 2,640 5,510 12, ,270 1,470 2,00 4,760 10, ,140 1,10 2,060 4,260 9, ,070 1,690,470 7, ,00 1,640,60 7, ,470,000 6, ,210 2,440 5, ,050 2,110 4, ,890 4, ,720, ,490, ,0,

71 54-11 (Log #99) C. A. continued Table Corrugated Stainless Steel Tubing (CSST) Gas Natural Inlet pressure 5.0 psi Pressure Drop.5 psi Specific Gravity 0.60 Tube Size (EHD*) Flow Designation: Maximum Capacity in Cubic Feet of Gas per Hour ,084 1,04 1,995 2,50 4,92 5,659 8,295 18,080 40, ,289 1,616,077,54 5,11 11,78 25, ,181 1,478 2,80,228 4,860 10,77 2, ,01 1,284 2,418 2,786 4,225 8,972 20, ,151 2,157 2,486,791 8,015 18, ,752 2,021,112 6,50 14, ,694 1,955,016 6,20 14, ,511 1,744 2,705 5,646 12, ,228 1,418 2,221 4,600 10, ,060 1,224 1,91,977 9, ,092 1,72,55 8, ,585,240 7, ,78 2,802 6, ,05 2,50 5, ,080 1,00 2,000 2,50 4,920 5,660 8,00 18,100 40, ,290 1,620,080,540 5,10 11,400 25, ,180 1,480 2,800,20 4,860 10,400 2, ,00 1,280 2,420 2,790 4,20 8,970 20, ,150 2,160 2,490,790 8,020 18, ,750 2,020,110 6,50 14, ,690 1,960,020 6,20 14, ,510 1,740 2,710 5,650 12, ,20 1,420 2,220 4,600 10, ,060 1,220 1,90,980 9, ,090 1,70,550 8, ,590,240 7, ,80 2,800 6, ,040 2,500 5,

72 54-11 (Log #99) C. A. continued Table Polyethylene Plastic Pipe Gas Natural 1.0 psi or Less Inlet pressure Less than 2 psi Pressure Drop 0. in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal OD: 1 / / 2 2 Designation: SDR 9. SDR 11.0 SDR SDR SDR SDR Actual ID: Maximum Capacity in Cubic Feet of Gas per Hour ,442 2, , , , , ,440 2, , , , ,

73 54-11 (Log #99) C. A. continued Table Polyethylene Plastic Pipe Gas Natural 1.0 psi or Less Inlet pressure Less than 2 psi Pressure Drop 0.5 in. WC Specific Gravity 0.60 Pipe Size (in.) Nominal OD: 1 / / 2 2 Designation: SDR 9. SDR 11.0 SDR SDR SDR SDR Actual ID: Maximum Capacity in Cubic Feet of Gas per Hour ,258 1,900, ,06 2, ,049 1, , , , , , , ,260 1,900, ,10 2, ,050 1, , , , , , ,

74 54-11 (Log #99) C. A. continued Table Polyethylene Plastic Pipe Gas Natural Inlet pressure 2.0 psi Pressure Drop 1.0 psi Specific Gravity Pipe Size (in.) Nominal OD: 1 / / 2 2 Designation: SDR 9. SDR 11.0 SDR SDR SDR SDR Actual ID: Maximum Capacity in Cubic Feet of Gas per Hour 10 1,858,721 6,714 11,61 17,565 1, ,277 2,557 4,614 7,994 12,072 21, ,026 2,054,706 6,420 9,695 17, ,758,172 5,494 8,297 14, ,558 2,811 4,869 7,54 1, ,412 2,547 4,412 6,66 11, ,299 2,4 4,059 6,10 11, ,208 2,180,776 5,70 10, ,14 2,045,54 5,51 9, ,071 1,92,47 5,054 9, ,712 2,966 4,479 8, ,551 2,688 4,059 7, ,427 2,47,74 6, ,28 2,00,474 6, ,860,720 6,710 11,600 17,600 1, ,280 2,560 4,610 7,990 12,100 21, ,00 2,050,710 6,420 9,690 17, ,760,170 5,490 8,00 14, ,560 2,810 4,870 7,50 1, ,410 2,550 4,410 6,660 12, ,00 2,40 4,060 6,10 11, ,210 2,180,780 5,700 10, ,10 2,050,540 5,50 9, ,070 1,90,50 5,050 9, ,710 2,970 4,480 8, ,550 2,690 4,060 7, ,40 2,470,70 6, ,0 2,00,470 6, ,180 2,040,080 5, ,070 1,850 2,790 5, ,700 2,570 4, ,580 2,90 4, ,480 2,240 4, ,400 2,120, ,0 2,010, ,270 1,920, ,220 1,840, ,170 1,760, ,10 1,700, ,090 1,640 2, ,050 1,590 2, ,020 1,540 2, ,500 2,690 1, ,450 2,610 1, ,80 2,480 1, ,20 2,70 1, ,260 2,270 1, ,210 2,180 1, ,170 2,100 1, ,10 2,00 1, ,090 1,960 1, ,060 1,900 1, ,00 1,850 2, ,000 1,800

75 54-11 (Log #99) C. A. continued Table Schedule 40 Metallic Pipe Gas Undiluted Propane Inlet pressure 10.0 psi Pressure Drop 1.0 psi Specific Gravity 1.50 SPECIAL USE: Pipe Sizing Between First Stage (High Pressure Regulator) and Second Stage (Low Pressure Regulator) Pipe Size (in.) Nominal Inside: 1 / / / 2 4 Actual: Maximum Capacity in Thousands of Btu per Hour 0 1,84,85 7,225 14,84 22,225 42, , ,58 245, ,570,28 6,184 12,696 19,022 6,64 10, ,12 210, ,91 2,909 5,480 11,252 16,859 2,468 91,484 1, , ,261 2,66 4,966 10,195 15,275 29,419 82, ,64 169, ,160 2,425 4,568 9,79 14,05 27,065 76, , , ,079 2,256 4,250 8,726 1,074 25,179 70,944 10, , ,012 2,117,988 8,187 12,267 2,624 66,564 97,460 15, ,000,767 7,7 11,587 22,15 62,876 92, , ,606,025 6,210 9,05 17,920 50,492 7, , ,74 2,589 5,15 7,964 15,7 4,214 6,272 88, ,218 2,294 4,711 7,058 1,59 8,00 56,077 78, ,104 2,079 4,268 6,95 12,16 4,70 50,810 70, ,015 1,91,927 5,88 11,1 1,926 46,744 65, ,779,65 5,47 10,541 29,701 4,487 60, ,669,428 5,15 9,890 27,867 40,802 56, ,577,28 4,851 9,42 26,2 8,541 5, ,429 2,94 4,95 8,465 2,851 4,921 48, ,14 2,699 4,044 7,788 21,94 2,127 44, ,22 2,511,762 7,245 20,41 29,888 41, ,147 2,56,50 6,798 19,15 28,04 9,066 1, ,084 2,225,4 6,421 18,092 26,489 6,902 1, ,787 2,677 5,156 14,528 21,272 29,6 2, ,529 2,291 4,41 12,45 18,206 25,

76 54-11 (Log #99) C. A. continued Table continued Nominal Inside: 1 / / / 2 4 Actual: Capacity in Thousands of Btu per Hour 10,20 6,950 1,100 26,900 40,00 77, , , , ,280 4,780 9,000 18,500 27,700 5,00 85, ,000 06, ,80,840 7,220 14,800 22,200 42,800 68, , , ,570,280 6,180 12,700 19,000 6,600 58,400 10, , ,90 2,910 5,480 11,00 16,900 2,500 51,700 91, , ,260 2,640 4,970 10,200 15,00 29,400 46,900 82, , ,160 2,40 4,570 9,80 14,100 27,100 4,100 76,00 156, ,080 2,260 4,250 8,70 1,100 25,200 40,100 70, , ,010 2,120,990 8,190 12,00 2,600 7,700 66,600 16, ,000,770 7,70 11,600 22,00 5,600 62, , ,770,40 6,850 10,00 19,800 1,500 55, , ,610,020 6,210 9,00 17,900 28,600 50,500 10, ,480 2,780 5,710 8,560 16,500 26,00 46,500 94, ,70 2,590 5,20 7,960 15,00 24,400 4,200 88, ,220 2,290 4,710 7,060 1,600 21,700 8,00 78, ,100 2,080 4,270 6,400 12,00 19,600 4,700 70, ,020 1,910,90 5,880 11,00 18,100 1,900 65, ,780,650 5,470 10,500 16,800 29,700 60, ,670,40 5,140 9,890 15,800 27,900 56, ,580,240 4,850 9,40 14,900 26,00 5, ,500,070 4,610 8,870 14,100 25,000 51, ,40 2,90 4,400 8,460 1,500 2,900 48, ,70 2,810 4,210 8,110 12,900 22,800 46, ,10 2,700 4,040 7,790 12,400 21,900 44, ,270 2,600,900 7,500 12,000 21,100 4, ,220 2,510,760 7,240 11,500 20,400 41, ,180 2,40,640 7,010 11,200 19,800 40, ,150 2,60,50 6,800 10,800 19,200 9, ,110 2,290,40 6,600 10,500 18,600 7,900 1, ,080 2,20,0 6,420 10,200 18,100 6,900 1, ,00 2,110,170 6,100 9,720 17,200 5,000 1, ,020,020 5,820 9,270 16,400,400 1, ,90 2,890 5,570 8,880 15,700 2,000 1, ,850 2,780 5,50 8,50 15,100 0,800 1, ,790 2,680 5,160 8,220 14,500 29,600 1, ,70 2,590 4,980 7,940 14,000 28,600 1, ,670 2,500 4,820 7,680 1,600 27,700 1, ,620 2,40 4,670 7,450 1,200 26,900 1, ,570 2,60 4,540 7,20 12,800 26,100 2, ,50 2,290 4,410 7,00 12,400 25,

77 Table 12.2 Schedule 40 Metallic Pipe Pipe Size (in.) Gas Undiluted Propane Inlet pressure 2.0 psi Pressure Drop 1.0 psi Specific Gravity 1.50 Nominal 1 / / / 2 4 Actual ID Maximum Capacity in Thousands of Btu per Hour 10 2,676 5,595 10,59 21,68 2,420 62,48 99, ,927 58, ,89,845 7,24 14,872 22,282 42,91 68,97 120, , ,477,088 5,817 11,942 17,89 4,461 54,925 97, , ,264 2,64 4,978 10,221 15,14 29,494 47,009 8,10 169, ,120 2,42 4,412 9,059 1,57 26,140 41,66 7,65 150, ,015 2,122,998 8,208 12,298 2,685 7,750 66,75 16, ,952,678 7,551 11,14 21,790 4,729 61,95 125, ,816,422 7,025 10,526 20,271 2,09 57, , ,704,210 6,591 9,876 19,020 0,14 5, , ,610,0 6,226 9,29 17,966 28,65 50,621 10, ,427 2,688 5,518 8,268 15,92 25,78 44,865 91, ,29 2,45 5,000 7,491 14,427 22,995 40,651 82, ,189 2,240 4,600 6,892 1,27 21,155 7,98 76, ,106 2,084 4,279 6,411 12,48 19,681 4,792 70, ,680 5,590 10,500 21,600 2,400 62,400 99, ,000 59, ,840,850 7,240 14,900 22,00 42,900 68, , , ,480,090 5,820 11,900 17,900 4,500 54,900 97, , ,260 2,640 4,980 10,200 15,00 29,500 47,000 8, , ,120 2,40 4,410 9,060 1,600 26,100 41,700 7, , ,010 2,120 4,000 8,210 12,00 2,700 7,700 66,700 16, ,950,680 7,550 11,00 21,800 4,700 61, , ,820,420 7,020 10,500 20,00 2,00 57, , ,700,210 6,590 9,880 19,000 0,00 5, , ,610,00 6,20 9,0 18,000 28,600 50,600 10, ,40 2,690 5,520 8,270 15,900 25,400 44,900 91, ,290 2,440 5,000 7,490 14,400 2,000 40,700 82, ,190 2,240 4,600 6,890 1,00 21,200 7,400 76, ,110 2,080 4,280 6,410 12,00 19,700 4,800 71, ,850,790 5,680 10,900 17,400 0,800 62, ,670,440 5,150 9,920 15,800 27,900 57, ,540,160 4,740 9,120 14,500 25,700 52, ,40 2,940 4,410 8,490 1,500 2,900 48, ,40 2,760 4,10 7,960 12,700 22,400 45, ,270 2,610,910 7,520 12,000 21,200 4, ,210 2,480,710 7,140 11,400 20,100 41, ,150 2,60,540 6,820 10,900 19,200 9, ,100 2,260,90 6,50 10,400 18,400 7, ,060 2,170,260 6,270 9,990 17,700 6, ,020 2,090,140 6,040 9,60 17,000 4, ,020,00 5,80 9,00 16,400, ,960 2,90 5,640 9,000 15,900 2, ,900 2,840 5,470 8,720 15,400 1, ,840 2,760 5,10 8,470 15,000 0, ,790 2,680 5,170 8,240 14,600 29,700 1, ,700 2,550 4,910 7,80 1,800 28,200 1, ,620 2,40 4,680 7,470 1,200 26,900 1, ,550 2,0 4,490 7,150 12,600 25,800 1, ,490 2,240 4,10 6,870 12,100 24,800 1, ,440 2,160 4,150 6,620 11,700 2,900 1, ,90 2,080 4,010 6,90 11,00 2,000 1, ,40 2,010,880 6,180 10,900 22,00 1, ,00 1,950,760 6,000 10,600 21,600 1, ,270 1,900,650 5,820 10,00 21,000 1, ,20 1,840,550 5,660 10,000 20,400 2,000

78 Table Schedule 40 Metallic Pipe Gas Undiluted Propane Inlet pressure 11.0 in. WC Pressure Drop 0.5 in. WC Specific Gravity 1.50 SPECIAL USE: Pipe Sizing Between Single or Second Stage (Low Pressure Regulator) and Appliance. Pipe Size (in.) Nominal Inside: 1 / / / 2 4 Actual: Maximum Capacity in Thousands of Btu per Hour ,145 2,52,52 6,786 19,119 27,99 8, ,616 2,422 4,664 1,141 19,240 26, ,298 1,945,745 10,552 15,450 21, ,111 1,664,205 9,01 1,22 18, ,475 2,841 8,004 11,720 16, ,7 2,574 7,25 10,619 14, ,144 2,20 6,207 9,088 12, ,014 1,952 5,501 8,055 11, ,70 4,876 7,19 9, ,568 4,418 6,468 9, ,42,781 5,56 7, ,189,51 4,906 6, ,078,06 4,446 6, ,79 4,090 5, ,599,805 5,01 Nominal Inside: 1 / / / 2 4 Actual: Capacity in Thousands of Btu per Hour ,150 2,50,520 6,790 10,800 19,100 9, ,620 2,420 4,660 7,40 1,100 26, ,00 1,940,750 5,970 10,600 21, ,110 1,660,210 5,110 9,00 18, ,480 2,840 4,50 8,000 16, ,40 2,570 4,100 7,250 14, ,20 2,70,770 6,670 1, ,140 2,200,510 6,210 12, ,070 2,070,290 5,820 11, ,010 1,950,110 5,500 11, ,70 2,760 4,880 9, ,570 2,500 4,420 9, ,440 2,00 4,060 8, ,40 2,140,780 7, ,190 1,900,50 6, ,080 1,720,040 6, ,580 2,790 5, ,470 2,600 5, ,80 2,440 4, ,00 2,00 4, ,240 2,190 4, ,180 2,090 4, ,10 2,000 4, ,090 1,920, ,050 1,850, ,010 1,790, ,70,50 1, ,680,420 1, ,60,20 1, ,580,20 1, ,500,070 1, ,40 2,90 1, ,70 2,800 1, ,20 2,690 1, ,270 2,590 1, ,20 2,500 1, ,190 2,420 2, ,150 2,

79 Gas Undiluted Propane Table Semi-Rigid Copper Tubing Inlet pressure Pressure Drop 10.0 psi 1.0 psi Specific Gravity 1.50 SPECIAL USE: Sizing Between First Stage (High Pressure Regulator) and Second Stage (Low Pressure Regulator) Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Thousands of Btu per Hour ,058 2,152,760 5,5 11,96 20,516 2,47 67,71 119, ,479 2,585,667 7,82 14,101 22,22 46,0 81, ,188 2,075 2,944 6,290 11,2 17,85 7,18 65, ,016 1,776 2,520 5,8 9,691 15,280 1,824 56, ,574 2,24 4,771 8,589 1,542 28,205 49, ,426 2,024 4,2 7,782 12,270 25,556 45, ,12 1,862,977 7,160 11,288 2,511 41, ,221 1,72,700 6,661 10,502 21,87 8, ,145 1,625,471 6,250 9,85 20,522 6, ,082 1,55,279 5,90 9,07 19,85 4, ,61 2,906 5,22 8,249 17,181 0, ,2 2,6 4,741 7,474 15,567 27, ,14 2,42 4,61 6,876 14,21 25, ,055 2,254 4,057 6,97 1,2 2, ,115,807 6,002 12,501 22, ,997,596 5,669 11,808 20, ,897,415 5,85 11,215 19, ,810,258 5,17 10,699 18, ,060 2,150,760 5,0 11,400 20,500 2,00 67, ,480 2,580,670 7,80 14,100 22,200 46, ,190 2,080 2,940 6,290 11,00 17,900 7, ,020 1,780 2,520 5,80 9,690 15,00 1, ,570 2,20 4,770 8,590 1,500 28, ,40 2,020 4,20 7,780 12,00 25, ,10 1,860,980 7,160 11,00 2, ,220 1,70,700 6,660 10,500 21, ,150 1,60,470 6,250 9,850 20, ,080 1,540,280 5,900 9,10 19, ,60 2,910 5,20 8,250 17, ,20 2,60 4,740 7,470 15, ,10 2,420 4,60 6,880 14, ,060 2,250 4,060 6,400 1, ,000,600 5,670 11, ,810,260 5,140 10, ,660,000 4,70 9, ,550 2,790 4,400 9, ,450 2,620 4,10 8, ,70 2,470,900 8, ,00 2,50,700 7, ,240 2,240,50 7, ,190 2,140,80 7, ,140 2,060,250 6, ,100 1,980,10 6, ,060 1,920,020 6, ,00 1,850 2,920 6, ,000 1,800 2,840 5, ,750 2,750 5, ,700 2,680 5,580 1, ,610 2,540 5,00 1, ,540 2,40 5,050 1, ,470 2,20 4,840 1, ,420 2,20 4,650 1, ,60 2,150 4,480 1, ,20 2,080 4,0 1, ,270 2,010 4,190 1, ,240 1,950 4,060 1, ,200 1,890,940 1, ,170 1,840,80 2,

80 54-11 (Log #99) C. A. continued Table Semi-Rigid Copper Tubing Inlet pressure 11.0 in. WC Pressure Drop 0.5 in. WC Specific Gravity 1.50 SPECIAL USE: Sizing Between Single or Second Stage (Low Pressure Regulator) and Appliance Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Thousands of Btu per Hour ,795 2,80 5,895 10, ,24 1,945 4,051 7, ,562,25 5, ,7 2,784 4, ,185 2,468 4, ,074 2,26, ,057, ,914, ,796, ,696, ,50 2, ,62 2, ,25 2, ,166 2, ,094 1, ,0 1, , , ,800 2,80 5, ,20 1,950 4, ,560, ,40 2, ,180 2, ,070 2, , , , , , , NA , NA , NA ,00 00 NA NA

81 54-11 (Log #99) C. A. continued Table continued SPECIAL USE: Sizing Between Single or Second Stage (Low Pressure Regulator) and Appliance Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Thousands of Btu per Hour NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA ,000 NA NA ,100 NA NA ,200 NA NA ,00 NA NA ,400 NA NA ,500 NA NA ,600 NA NA ,700 NA NA ,800 NA NA ,900 NA NA ,000 Note: Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products. NA means a flow of less than 10,000 But/hr 54-81

82 Gas Undiluted Propane Table Semi-Rigid Copper Tubing Inlet pressure Pressure Drop 2.0 psi 1.0 psi Specific Gravity 1.50 Tube Size (in.) Nominal: K & L 1 1 / / / 2 ACR 1 / Outside: Inside: Maximum Capacity in Thousands of Btu per Hour ,72,027 4,295 9,175 16,517 26,042 54,240 95, ,191 2,081 2,952 6,06 11,52 17,899 7,279 65, ,671 2,71 5,064 9,116 14,7 29,96 52, ,40 2,029 4,4 7,802 12,02 25,621 45, ,267 1,798,841 6,915 10,90 22,708 40, ,148 1,629,480 6,266 9,879 20,575 6, ,057 1,499,202 5,764 9,088 18,929, ,94 2,979 5,6 8,455 17,609 1, ,08 2,795 5,01 7,9 16,522 29, ,26 2,640 4,75 7,49 15,607 27, ,095 2,40 4,212 6,641 1,82 24, ,120,817 6,017 12,5 22, ,950,511 5,56 11,50 20, ,814,267 5,150 10,727 18, ,702,065 4,82 10,064 17, ,608 2,895 4,564 9,507 16, ,527 2,750 4,5 9,029 15, ,457 2,62 4,16 8,614 15, ,70,00 4,00 9,170 16,500 26,000 54, ,190 2,080 2,950 6,10 11,400 17,900 7, ,670 2,70 5,060 9,120 14,400 29, ,40 2,00 4,0 7,800 12,00 25, ,270 1,800,840 6,920 10,900 22, ,150 1,60,480 6,270 9,880 20, ,060 1,500,200 5,760 9,090 18, ,90 2,980 5,60 8,450 17, ,10 2,790 5,00 7,90 16, ,240 2,640 4,750 7,490 15, ,000 1,100 1,200 1,00 1,400 1,500 1,600 1,700 1,800 1,900 2, ,100 2,40 4,210 6,640 1, ,120,820 6,020 12, ,950,510 5,540 11, ,810,270 5,150 10, ,610 2,900 4,560 9, ,460 2,620 4,140 8, ,40 2,410,800 7, ,250 2,250,540 7, ,170 2,110,20 6, ,110 1,990,140 6, ,050 1,890 2,980 6, ,000 1,800 2,840 5, ,70 2,720 5, ,660 2,620 5, ,600 2,520 5, ,540 2,40 5, ,490 2,50 4, ,450 2,280 4, ,410 2,220 4, ,70 2,160 4, ,00 2,050 4, ,240 1,950 4, ,190 1,870, ,140 1,800, ,100 1,70, ,060 1,670, ,00 1,620, ,000 1,570, ,520, ,480,

83 54-11 (Log #99) C. A. continued Table Corrugated Stainless Steel Tubing (CSST) Gas Undiluted Propane Inlet pressure 11.0 in. WC Pressure Drop 0.5 in. WC Specific Gravity 1.50 Tube Size (EHD*) Flow Designation: Maximum Capacity in Thousands of Btu per Hour ,415 2,80 6, ,99 4, ,62, ,404, ,254 2, ,14 2, , , , , , , , , , ,420 2,80 6, ,990 4, ,620, ,400, ,250 2, ,140 2, , , , , , , , , , Table Corrugated Stainless Steel Tubing (CSST) Gas Undiluted Propane Inlet pressure 2.0 psi Pressure Drop 1.0 psi Specific Gravity 1.50 Tube Size (EHD*) Flow Designation: Maximum Capacity in Thousands of Btu per Hour ,106 1,75 2,168 4,097 4,720 7,128 15,174 4, ,120 1,84 2,560 2,954 4,564 9,549 21, ,027 1,266 2,1 2,692 4,176 8,708 19, ,100 2,012 2,2,61 7,529 17, ,794 2,072,258 6,726 15, ,457 1,685 2,675 5,480 12, ,410 1,629 2,591 5,0 12, ,256 1,454 2,25 4,78 10, ,021 1,182 1,908,860 8, ,019 1,658,7 7, ,487 2,981 6, ,6 2,719 6, ,16 2,51 5, ,027 2,101 4, ,110 1,740 2,170 4,100 4,720 7,10 15,200 4, ,120 1,80 2,560 2,950 4,560 9,550 21, ,00 1,270 2,0 2,690 4,180 8,710 19, ,100 2,010 2,20,60 7,50 17, ,790 2,070,260 6,70 15, ,460 1,690 2,680 5,480 12, ,410 1,60 2,590 5,00 12, ,260 1,450 2,0 4,740 10, ,020 1,180 1,910,860 8, ,020 1,660,40 7, ,490 2,980 6, ,60 2,720 6, ,160 2,50 5, ,00 2,100 4,

84 54-11 (Log #99) C. A. continued Table 12.0 Corrugated Stainless Steel Tubing (CSST) Gas Undiluted Propane Inlet pressure 5.0 psi Pressure Drop.5 psi Specific Gravity 1.50 Tube Size (EHD*) Flow Designation: Maximum Capacity in Thousands of Btu per Hour ,065 1,71 2,061,15,999 7,829 8,945 1,112 28,580 6, ,092 1,07 2,07 2,554 4,864 5,600 8,95 17,986 40, ,19 1,866 2,6 4,40 5,102 7,682 16,40 6, ,0 1,629 2,029,822 4,404 6,679 14,18 2, ,46 1,819,409,929 5,99 12,670 28, ,206 1,492 2,769,194 4,919 10,22 2, ,169 1,446 2,677,090 4,768 9,990 22, ,051 1,296 2,88 2,756 4,276 8,925 20, ,062 1,941 2,241,511 7,271 16, ,675 1,94,052 6,287 14, ,49 1,726 2,78 5,616 12, ,59 1,572 2,505 5,122 11, ,17 1,56 2,178 4,429 10, ,046 1,210 1,954,957 9, ,070 1,710 2,060,150 4,000 7,80 8,950 1,100 28,600 6, ,090 1,10 2,040 2,550 4,860 5,600 8,400 18,000 40, ,190 1,870 2,40 4,40 5,100 7,680 16,400 6, ,00 1,60 2,00,820 4,400 6,680 14,200 2, ,460 1,820,410,90 5,990 12,700 28, ,210 1,490 2,770,190 4,920 10,00 2, ,170 1,450 2,680,090 4,770 9,990 22, ,050 1,00 2,90 2,760 4,280 8,90 20, ,060 1,940 2,240,510 7,270 16, ,680 1,90,050 6,290 14, ,490 1,70 2,740 5,620 12, ,60 1,570 2,510 5,120 11, ,170 1,60 2,180 4,40 10, ,050 1,210 1,950,960 9,

85 54-11 (Log #99) C. A. continued Table 12.1 Polyethylene Plastic Pipe Gas Undiluted Propane Inlet pressure 11.0 in. WC Pressure Drop 0.5 in. WC Specific Gravity 1.50 Pipe Size (in.) Nominal OD: 1 / / 2 2 Designation: SDR 9. SDR 11.0 SDR SDR SDR SDR Actual ID: Maximum Capacity in Thousands of Btu per Hour ,227 2,126,211 5, ,461 2,207, ,17 1,772, ,004 1,517 2, ,44 2, ,218 2, ,121 2, ,042 1, , , , , , , ,20 2,10,210 5, ,460 2,210, ,170 1,770, ,000 1,520 2, ,40 2, ,220 2, ,120 2, ,040 1, , , , , , , ,

86 Gas Undiluted Propane Table 12.2 Polyethylene Plastic Pipe Inlet pressure Pressure Drop 2.0 psi 1.0 psi Specific Gravity 1.50 Pipe Size (in.) Nominal OD: 1 / / 2 2 Designation: SDR 9. SDR 11.0 SDR SDR SDR SDR Actual ID: Maximum Capacity in Thousands of Btu per Hour 10,126 6,259 11,29 19,564 29,545 5, ,148 4,02 7,762 1,446 20,06 6, ,725,454 6,2 10,798 16,07 29, ,477 2,957 5,5 9,242 1,956 25, ,09 2,620 4,728 8,191 12,69 22, ,186 2,74 4,284 7,421 11,207 20, ,091 2,184,941 6,828 10,11 18, ,015 2,02,666 6,52 9,592 17, ,907,440 5,960 9,000 16, ,801,249 5,629 8,501 15, ,596 2,880 4,989 7,55 1, ,446 2,609 4,521 6,827 12, ,1 2,401 4,159 6,281 11, ,28 2,2,869 5,84 10,498 10,10 6,260 11,00 19,600 29,500 5, ,150 4,00 7,760 1,400 20,00 6, ,70,450 6,20 10,800 16,00 29, ,480 2,960 5,0 9,240 14,000 25, ,10 2,620 4,70 8,190 12,400 22, ,190 2,70 4,280 7,420 11,200 20, ,090 2,180,940 6,80 10,00 18, ,010 2,00,670 6,50 9,590 17, ,910,440 5,960 9,000 16, ,800,250 5,60 8,500 15, ,600 2,880 4,990 7,50 1, ,450 2,610 4,520 6,80 12, ,0 2,400 4,160 6,280 11, ,240 2,20,870 5,840 10, ,100 1,980,40 5,180 9, ,790,110 4,690 8, ,650 2,860 4,20 7, ,50 2,660 4,020 7, ,440 2,500,770 6, ,60 2,60,560 6, ,290 2,240,80 6, ,20 2,140,220 5, ,180 2,040,090 5, ,10 1,960 2,970 5, ,090 1,890 2,860 5, ,050 1,80 2,760 4, ,020 1,770 2,670 4, ,710 2,590 4, ,670 2,520 4,520 1, ,620 2,450 4,400 1, ,540 2,20 4,170 1, ,470 2,220,980 1, ,410 2,120,810 1, ,50 2,040,660 1, ,00 1,960,50 1, ,260 1,900,410 1, ,220 1,840,00 1, ,180 1,780,200 1, ,140 1,70,110 2, ,110 1,680,

87 54-11 (Log #99) C. A. continued 54-87

88 54-12 (Log #126) 54-88

89 54-12 (Log #126) 54-89

90 54-1 (Log #101) rec 54-90

91 54-1 (Log #101) rec 54-1 (Log #101) C.A

92 54-1 (Log #101) C.A

93 Committee Meeting Action: Reject Committee Statement: The proposal does not provide a specific recommendation, i.e., the actual revisions to the tables. Variability between CSST manufacturers makes it impossible to assign nominal sizes Log# 79 NFG-AAA Final Action: Accept in Principle (Table 12.22, Table 12.2 (New) ) Submitter : James Ranfone, American Gas Association / Rep. AGA Building Energy Codes and Standards (BECS) Committee Recommendation: Add new tables as follows: See tables on page 94 Substantiation: PE Tubing is being used for yard gas line piping and the code lacks sizing tables applicable for natural gas. The code currently contains a PE tubing table for LP (Table 12.). Table entries were calcualted using the low pressure formula in the 2002 National Fuel Gas Code. Committee Meeting Action: Accept in Principle See table on page 95 Committee Statement: Accept the proposed tables and revise them to be consistent with action taken on other tables to recognize that flows below 10 CFH are shown as N/A as they are too small to be of practical use Log# 128 NFG-AAA Final Action: Accept in Principle (Table 12.2 (New) ) Submitter : Terry Swisher, IAPMO / Rep. Committee on Uniform Plumbing Code Recommendation: Add UPC table for LP Gas, Schedule 40, 10 psi with psi pressure drop as a new table in the NFGC. See tables on page 96 Substantiation: The Uniform Plumbing Code (UPC) contains pipe-sizing table for LP gas, schedule 40, 10 psi with.0 psi pressure drop. By adding this new table, the NFGC will be more usable and would better coordinate coverage between the UPC and NFGC. Committee Meeting Action: Accept in Principle Add a new Table with a psi inlet and 2 psi drop, which has been revised per the tables accepted in (Log #99). See revised table on page 97 Committee Statement: The revised table will be consistent with the tables approved in Log 99. The committee believes that a 2 psi drop is more realistic for this table. The metric table is not included as it is not needed. Metric conversions are provided Log# 2 NFG-AAA Final Action: Reject (1.1, 1.2) Submitter : Richard White, E., Richard E. White and Associates, P.C. / Rep. National Association of Plumbing-Heating-Cooling Contractors Recommendation: Replace Section 10.1 in itʼs entirely with the following: 10.1 Requirements for Single Appliance Vent Tables 10.1 through General These venting tables shall not be used where obstructions, as described in the exceptions to Section 7.15, are installed in the venting system Height Limitations For vent heights lower than 6 ft or higher than shown in the tables, engineering methods shall be used to calculate vent capacities Vent Dampers The installation of vents serving listed appliances with vent dampers shall be in accordance with the appliance manufacturerʼs instructions or in accordance with the following: (1) The maximum capacity of the vent system shall be determined using the NAT Max column. (2) The minimum capacity shall be determined as if the appliance were a fanassisted appliance, using the FAN Min column to determine the minimum capacity of the vent system. Where the corresponding FAN Min is NA, the vent configuration shall not be permitted and an alternative venting configuration shall be utilized More than one input rating For appliances with more than one input rate, the minimum vent capacity (FAN Min) determined from the tables shall be less than the lowest appliance input rating, and the maximum vent capacity (FAN Max/NAT Max) determined from the tables shall be greater than the 54-9 highest appliance rating input Minimum Vent Size If the vent size shown in the appropriate tables is smaller than the appliance draft hood outlet or flue collar, the smaller size shall be permitted to be used provided the following requirements are met: (1) The total vent height (H) is at least 10 ft ( m). (2) Vents for appliance draft hood outlets or flue collars 12 in. (00 mm) in diameter or smaller shall not be reduced more than one table size. () Vents for appliance draft hood outlets or flue collars larger than 12 in. (00 mm) in diameter shall not be reduced more than two table sizes. (4) The maximum capacity listed in the tables for a fan-assisted appliance is reduced by 10 percent (0.90 (maximum table capacity). (5) The draft hood outlet is greater than 4 in. (100 mm) in diameter. a. Do not connect a -in. (8- cm) diameter vent to a 4-in. (100-mm) diameter draft hood outlet. b. This provision shall not apply to fan-assisted appliances Vent Connector Size Vent connectors shall be the size of the listed appliance categorized vent diameter, flue collar diameter, or draft hood outlet diameter, except as permitted below: (1) Vent connectors shall be permitted to be increased up to two sizes, but not greater than the vent size. (2) Vent connectors shall be permitted to be reduced provided the requirements of are met Larger Vent than Connector (1) If the vertical vent has a larger diameter than the vent connector, the vertical vent diameter shall be used to determine the minimum vent capacity. (2) The connector diameter shall be used to determine the maximum vent capacity. () The flow area of the vertical vent shall not exceed seven times the flow area of the listed appliance categorized vent area, flue collar area, or draft hood outlet area unless designated in accordance with approved engineering methods Elbows in the Vent (1) Single-appliance venting configurations with zero (0) lateral lengths in Tables 10.1, 10.2, and 10.5 shall have no elbows in the venting system. (2) Zero (0) lateral (L) shall apply only to a straight vertical vent attached to a top outlet draft hood or flue collar. () For vent configurations with lateral lengths, the venting tables include allowance for two 90 degree turns. a. For each additional 90 degree turn, or equivalent, the maximum capacity listed in the venting tables shall be reduced by 10 percent (0.90 X maximum table capacity). b. Two or more turns, the combined angles of which equal 90 degrees, shall be considered equivalent to one 90 degree turn Chimney Liner Systems Listed corrugated metallic chimney liner systems in masonry chimneys shall be sized by using Table 10.1 or 10.2 for Type B vents, with the following limitations: (1) The maximum capacity shall be reduced by 20 percent (0.80 x maximum capacity) (2) The minimum capacity shall be as shown in Table 10.1 or () Corrugated metallic liner systems installed with bends or offsets shall have their maximum capacity further reduced in accordance with Exposure to Outdoors (1) Tables 10.1 through 10.5 shall be used for chimneys and vents not exposed to the outdoors below the roof line. (2) A Type B vent or listed chimney lining system passing through an unused masonry chimney flue shall not be considered to be exposed to the outdoors. (4) Table 10. in combination with Table shall be used for clay-tile-lined exterior masonry chimneys, provided all of the following are met: a. Vent connector is Type B double wall. b. Vent connector length is limited to 11/2 ft for each inch (18 mm/mm) of vent connector diameter. c. The appliance is draft hood-equipped. d. The input rating is less than the maximum capacity given by Table 10.. e. For a water heater, the outdoor design temperature shall not be less than 5ºF (-15ºC). f. For a space-heating appliance, the input rating is greater than the minimum capacity given by Table Exception: The installation of vents serving listed appliances shall be permitted to be in accordance with the appliance manufacturerʼs instructions and the terms of the listing Variations in Material and Size In a single run of vent or vent connector, more than one diameter and type shall be permitted to be used, provided that all the sizes and types are permitted by the tables and these rules High-Altitude Input Ratings Sea level input ratings shall be used when determining maximum capacity for high altitude installation. Actual input (derated for altitude) shall be used for determining minimum capacity for high altitude installation Interpolation Interpolation shall be permitted in calculating capacities for vent dimensions that fall between table entries. (See Example, Appendix G.) Extrapolation Extrapolation beyond the table entries shall not be permitted. For SI units: 1 in = 25 mm; 1 ft = 0.05 m; 1000 Btu/hr = 0.29 kw; 1 in = 645 mm 10.2 Applications of Multiple Appliance Vent Tables 10.6 through 10.1(a) and

94 54-15 (Log #79) rec

95 54-15 (Log #79) C.A