Errata ANSI Z223.1 National Fuel Gas Code 2012 Edition Reference: Various Errata No.: Z

Transcription

1 Errata ANSI Z223.1 National Fuel Gas Code 2012 Edition Reference: Various Errata No.: Z Issue Date: 7/26/12 National Fuel Gas Code user: The American Gas Association (AGA) notes the following errors in the 2012 edition of ANSI Z223.1, National Fuel Gas Code. The first printing of the code by AGA contains these errors. AGA's later code printings are revised to include these corrections. To determine if you have a later printing, look for "Second (or later) Printing" located on the inside front cover of the code. AGA and NFPA separately print the code. Please visit the NFPA website at for any issued errata on NFPA 54. Notes on using the errata: Each erratum is numbered and is grouped by chapter and annex. Underscored material denotes those items or wording that are to be added and strike through material denotes those items or wording that are to be deleted. Shading is provided where necessary to identify hard-to-see revisions. AGA provides replacement code pages that can be inserted into or pasted over the existing pages in your code. Additional Information: For additional information on the errata, the code or National Fuel Gas Code Committee, please contact Mr. Paul Cabot, AGA, , pcabot@aga.org or Denise Beach, NFPA, , dbeach@nfpa.org. Also visit AGA's and NFPA's websites at or Copyright 2012 by American Gas Association - All Rights Reserved See reverse for Notice and Disclaimer of Liability Concerning the Use of AGA Documents.

2 Notice and Disclaimer of Liability Concerning the Use of AGA Documents Z223.1 documents are developed through a consensus standards development process approved by the American National Standards Institute. This process brings together volunteers representing varied viewpoints and interests to achieve consensus on fire and other safety issues. While the AGA administers the process and establish rules to promote fairness in the development of consensus, they do not independently test, evaluate, or verify the accuracy of any information or the soundness of any judgments contained in their codes and standards. The AGA disclaim liability for any personal injury, property or other damages of any nature whatsoever, whether special, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, or reliance on this document. The AGA also make no guaranty or warranty as to the accuracy or completeness of any information published herein. In issuing and making this document available, the AGA are not undertaking to render professional or other services for or on behalf of any person or entity. Nor is the AGA undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. The AGA have no power, nor do they undertake, to police or enforce compliance with the contents of this document. Nor does the AGA list, certify, test, or inspect products, designs, or installations for compliance with this document. Any certification or other statement of compliance with the requirements of this document shall not be attributable to the AGA and is solely the responsibility of the certifier or maker of the statement.

3 Errata Z AGA Printed Version NOTE: The following errata apply to the American Gas Association s first printing of ANSI Z Technical Committee on National Fuel Gas Code Page 2 1. Revise organization name as follows: Thomas R. Stroud, Health Hearth, Patio and Barbeque Association, [M] 2. Add the line to bottom of page: *NFPA 54 Committee only. Z223 Committee only. Chapter 10 Page Low Water Cutoff Hot water boilers installed above the radiation level and all steam boilers shall be provided with an automatic means to shut off the fuel supply to the burner(s) if the boiler water level drops to the lowest safe water line. All hot water boilers and all steam boilers shall be provided with an automatic means to shut off the fuel supply to the burner(s) if the boiler water level drops below the lowest safe water line. In lieu of the low water cutoff, water tube or coil-type boilers which require forced circulation to prevent overheating and failure shall have an approved flow sensing device arranged to shut down the boiler when the flow rate is inadequate to protect the boiler against overheating. Copyright 2012 by American Gas Association - All Rights Reserved

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5 54-2 NATIONAL FUEL GAS CODE Z Technical Committee on National Fuel Gas Code Thomas R. Crane, Chair Crane Engineering, MN [SE/SE] Paul W. Cabot, Nonvoting Secretary American Gas Association, DC [IM] Hugo Aguilar, International Association of Plumbing & Mechanical Officials, CA [EA] Edward Angelone, National Grid, NY [IM/ES] David Berning, A.O. Smith Water Products Company, SC [M] Rep. Air-Conditioning, Heating and Refrigeration Institute James P. Brewer, Magic Sweep Corporation, VA [IM/I-M] Rep. National Chimney Sweep Guild Thomas E. Buchal, Intertek Testing Services, NY [RT/AR-TL] Todd W. Buechler, Fairmont Specialty Insurance, IL [I/I] Dan Buuck, National Association of Home Builders, DC [I-M] S. Ron Caudle, Southern California Gas Company, CA [ES] Sidney L. Cavanaugh, Cavanaugh Consulting, CA Rep. United Association [I-M] Sharon Coates, State of Arkansas, AR [E/EA] Rep. International Fire Marshals Association Mike Deegan, Clearwater Gas System, FL, [U/ES] Rep. American Public Gas Association John Doucette, Connecticut Department of Public Safety, CT [EA] Glen Edgar, Selkirk, Corporation, OH [M/M] Rep. Air-Conditioning, Heating, and Refrigeration Institute Alberto Jose Fossa, * MDJ, Assessoria & Engenharia Consultiva, Brazil [SE] Rep. NFPA Latin American Section Ronnie Ray Frazier, Atmos Energy Corporation, TX [IM/ES] Pennie Feehan, Feehan Consulting, CA [M] Rep. Copper Development Association Mike Gorham, Northwest Gas Company, MN [IM/ES] Rep. National Propane Gas Association Gregg Gress, International Code Council, IL [E/EA] Steen Hagensen, EXHAUSTO Inc., GA [M/M] Jacob Hall, * Rheem Water Heater Division, AL [M] Rep. Air-Conditioning, Heating and Refrigeration Institute David Berning, * A.O. Smith Water Products Company, SC [M] (Alt. to J. H. Hall) Duane W. Brown, Ranger Insurance Company, TX [I] (Alt. to T. Buechler) Lawrence Brown, National Association of Home Builders, DC [IM] (Alt. to D. Buuck) John Doucette, * Connecticut Department of Public Safety, CT [E] (Alt. to P.T. Holmes) Pennie Freehan, * Freehan Consulting, CA [M] (Alt. to D. L. Powell) Richard Gilbert, Railroad Commission of Texas, TX [E/EA] (Alt. to J. T. Osterhaus) Brian Olson, U.S. Department of the Interior, CO [EA] (Alt. to K. Sons) Alternates Karl Harn, City of Portland, OR [E/EA] Rep. Oregon Mechanical Officials Association [EA] Patricio J. Himes, Sistemas de Energia, Mexico [U/ES] Rep. Asociación Mexicana Distribuidores de Gas Peter Hoekstra, Association of Home Appliance Manufacturers VA [M] Peter T. Homes, * State of Maine, ME [E] Adam S. Muliawan, * International Association of Plumbing & Mechanical Officials, CA [E] Brian C. Olson, * U.S. Department of the Interior, CO [U] James T. Osterhaus, Railroad Commission of Texas, TX [E/EA] Andrea Lanier Papageorge, AGL Resources, GA [IM/ES] Dale Powell, * Copper Development Association, PA [M] Phillip H. Ribbs, * PHR Consultants, CA [E] Rep. California State Pipe Trades Council Earl Righmier, AERCO International, Inc. NJ [M] Rep. Air-Conditioning, Heating, and Refrigeration Institute Bryan Rocky, Johnson Controls, Inc., KS [M/M] Rep. Air-Conditioning, Heating and Refrigeration Institute Joseph Mike Romano, TECO Peoples Gas, FL [ES] Kenneth Sons, U.S. Department of the Interior, CO [EA] Matt Sigler, * International Association of Plumbing & Mechanical Officials, CA [E] Robert E. Stack, CSA America, Inc., OH [RT/AR-TL] Jeffrey A. Stackpole, AON Global Risk Consulting, MI [I/I] Thomas R. Stroud, Hearth, Patio and Barbeque Association, [M] Franklin R. Switzer, Jr., * S-afe, Inc., IN [SE] Robert Wozniak, Underwriters Laboratories Inc., NY [RT/AR-TL] Stephen M. Yapchanyk, Con Edison, NY [ES] Dale Powell, Copper Development Association, PA [M] (Alt. P Freehan) Joseph Mike Romano,* TECO Peoples Gas, FL [IM] (Alt. to R. R. Frazier) Bruce J. Swiecicki, National Propane Gas Association, IL [IM/ES] (Alt. to M. R. Gorham) Matt Sigler, International Association of Plumbing & Mechanical Officials, CA [E] (Alt. to H. Aguilar) Lynne Simnick, * International Association of Plumbing & Mechanical Officials, CA [E] (Alt. to A. S. Muliawan) Denise Beach, NFPA Staff Liaison This list represents the membership at the time the Committee was balloted on the final text of this edition. Since that time, changes in the membership may have occurred. A key to classifications is found at the back of the document. NOTE: Membership on a committee shall not in and of itself constitute an endorsement of the Association or any document developed by the committee on which the member serves. Committee Scope: This Committee shall have primary responsibility for documents on safety code for gas piping systems on consumers 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 the following: (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. *NFPA 54 Committee only. Z223 Committee only Edition Errata Z

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7 Z INSTALLATION OF SPECIFIC APPLIANCES mm) for the next 3 ft (0.9 m) and 1 in. (25 mm) beyond 6 ft (1.8 m) Assembly and Installation. A central heating boiler or furnace shall be installed in accordance with the manufacturer s instructions and shall be installed on a floor of noncombustible construction with noncombustible flooring and surface finish and with no combustible material against the underside thereof, or on fire-resistive slabs or arches having no combustible material against the underside thereof. Exception No. 1: Appliances listed for installation on a combustible floor. Exception No. 2: Installation on a floor protected in an approved manner 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 Low Water Cutoff All hot water boilers and all steam boilers shall be provided with an automatic means to shut off the fuel supply to the burner(s) if the boiler water level drops below the lowest safe water line. In lieu of the low water cutoff, water tube or coil-type boilers which require forced circulation to prevent overheating and failure shall have an approved flow sensing device arranged to shut down the boiler when the flow rate is inadequate to protect the boiler against overheating * Steam Safety and Pressure Relief Valves. Steam and hot water boilers shall be equipped, respectively, with listed or approved steam safety or pressure relief valves of appropriate discharge capacity and conforming with ASME requirements. A shutoff valve shall not be placed between the relief valve and the boiler, or on discharge pipes between such valves and the atmosphere Relief valves shall be piped to discharge near the floor The entire discharged piping shall be at least the same size as the relief valve discharge piping Discharge piping shall not contain threaded end connection at its termination point Furnace Plenums and Air Ducts Furnace plenums and air ducts shall be installed in accordance with NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems, or NFPA 90B, Standard for the Installation of Warm Air Heating and Air-Conditioning Systems A furnace plenum supplied as a part of a furnace shall be installed in accordance with the manufacturer's instructions * Where a furnace plenum is not supplied with the furnace, any fabrication and installation instructions provided by the manufacturer shall be followed. The method of connecting supply and return ducts shall facilitate proper circulation of air Where a furnace is installed so supply ducts carry air circulated by the furnace to areas outside the space containing the furnace, the return air shall also be handled by a duct(s) sealed to the furnace casing and terminating outside the space containing the furnace Refrigeration Coils. The installation of refrigeration coils shall comply with the following requirements: (1) A refrigeration coil shall not be installed in conjunction with a forced air furnace where circulation of cooled air is provided by the furnace blower, unless the blower has sufficient capacity to overcome the external static resistance imposed by the duct system and refrigeration coil at the air flow rate for heating or cooling, whichever is greater. (2) Furnaces shall not be located upstream from refrigeration coils, unless the refrigeration coil is designed or equipped so as not to develop excessive temperature or pressure. (3) Refrigeration coils shall be installed in parallel with or on the downstream side of central furnaces to avoid condensation in the heating element, unless the furnace has been specifically listed for downstream installation. With a parallel flow arrangement, the dampers or other means used to control flow of air shall be sufficiently tight to prevent any circulation of cooled air through the furnace. (4) Means shall be provided for disposal of condensate and to prevent dripping of condensate on the heating element Cooling Units Used with Heating Boilers Boilers, where used in conjunction with refrigeration systems, shall be installed so that the chilled medium is piped in parallel with the heating boiler with appropriate valves to prevent the chilled medium from entering the heating boiler Where hot water heating boilers are connected to heating coils located in air handling units where they can be exposed to refrigerated air circulation, such boiler piping systems shall be equipped with flow control valves or other automatic means to prevent gravity circulation of the boiler water during the cooling cycle Edition Errata Z