Item #: 1. Revise text as follows: Scope.

Transcription

1 Item #: 1 UMC (103.0, 103.1, 103.2, 103.3, ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 13A) Revise text as follows: Scope General. The provisions of this code shall apply to the addition to or erection, installation, alteration, repair, relocation, replacement, use, or maintenance of any heating, ventilating, cooling, refrigeration systems; incinerators; or other miscellaneous heat-producing appliances within this jurisdiction. Additions, alterations, repairs to, and replacement of equipment or systems shall comply with the provisions for new equipment and systems, except as otherwise provided in Section of this code Conflicts. Where in any specific case different sections of this code or referenced standards specify different materials, methods of construction, or other requirements, the most restrictive shall govern as determined by the Authority Having Jurisdiction. Where there is a conflict between a general requirement and a specific requirement, the specific requirement shall be applicable Design and testing. The design and testing of equipment regulated by this code shall be subject to the approval of the Authority Having Jurisdiction Appendices The standards contained in Appendix A shall be considered as part of this code. Appendices B and C contain recommended practices that shall not apply unless specifically adopted. Appendix D contains conversion tables and a table for determining the approximate minimum thickness for carbon sheet steel. The UMC in the 3rd paragraph of Section Scope, speaks to conflicts in the code but does not cover conflicts between codes and standards. 1

2 Item #: 2 UMC (105.0 and ): Martin Cooper Central California Chapter IAPMO/Rep. Central California Chapter IAPMO Revised text as follows: Alternate Materials and Methods of Construction Equivalency. Nothing in this code is intended to prevent the use of alternate materials, systems, methods, or devices of equivalent or superior quality, strength, fire resistance, effectiveness, durability, and safety over those prescribed by this code that meet the requirements of this section. Any alternate material, system, method, or device approved for use shall comply with the intent of this code and shall provide an equivalent or superior level of quality, strength, effectiveness, fire resistance, durability and safety to that prescribed in this code. Technical documentation shall be submitted to the Authority Having Jurisdiction to demonstrate equivalency. The Authority Having Jurisdiction shall have the authority to approve or disapprove the system, method, or device for the intended purpose. Any approval of an alternate material, system, method, or device shall be at the discretion of the Authority Having Jurisdiction Intent. However, tthe exercise of this discretionary approval by the Authority Having Jurisdiction shall have no effect beyond the jurisdictional boundaries of said Authority Having Jurisdiction. Any alternate material or method of construction so approved shall not be considered as conforming to the requirements and/or intent of this code for any purpose other than that granted by the Authority Having Jurisdiction. Revisions to the alternate material and alternative engineered design provisions to clarify that approval is discretionary, to clarify the requirement to comply with the intent of the code, to remove vague and ambiguous language, and to ensure consistency between UPC and UMC code language Current Code language is unclear as to whether alternate materials and methods of construction must comply with the intent of the code. The 2006 UMC inadvertently removed the express requirement that alternate materials and methods must comply with the intent of the code. However, a reference to this requirement remains in the last sentence of UMC section The requirement to comply with the intent of the code is also contained in the Alternative Engineered Design provisions of UPC section The proposed amendment clarifies this issue. The proposed amendment also creates consistency in the codes by harmonizing the alternate approval codelanguage found in the UPC and UMC. The proposed changes also remove repetitive and unnecessary language. 2

3 Item #: 3 UMC (105.0 and ): David Mann Plumbers & Steamfitters Local 342/Rep. Self Revised text as follows: Alternate Materials and Methods of Construction Equivalency. Nothing in this code is intended to prevent the use of alternate materials, systems, methods, or devices of equivalent or superior quality, strength, fire resistance, effectiveness, durability, and safety over those prescribed by this code that meet the requirements of this section. Any alternate material, system, method, or device approved for use shall comply with the intent of this code and shall provide an equivalent or superior level of quality, strength, effectiveness, fire resistance, durability and safety to that prescribed in this code. Technical documentation shall be submitted to the Authority Having Jurisdiction to demonstrate equivalency. The Authority Having Jurisdiction shall have the authority to approve or disapprove the system, method, or device for the intended purpose. Any approval of an alternate material, system, method, or device shall be at the discretion of the Authority Having Jurisdiction Intent. However, tthe exercise of this discretionary approval by the Authority Having Jurisdiction shall have no effect beyond the jurisdictional boundaries of said Authority Having Jurisdiction. Any alternate material or method of construction so approved shall not be considered as conforming to the requirements and/or intent of this code for any purpose other than that granted by the Authority Having Jurisdiction. Current code language is unclear as to whether alternate materials and methods of construction must comply with the intent of the code. The 2006 UMC inadvertently removed the express requirement that alternate materials and methods must comply with the intent of the code. However, a reference to this requirement remains in the last sentence of section of the UMC. The requirement to comply with the intent of the code is also contained in the Alternative Engineered Design provisions of section of the UPC. The proposed amendment clarifies this issue. The proposed amendment also creates consistency in the codes by harmonizing the alternate approval code-language found in the UPC and UMC. 3

4 Item #: 4 UMC (204.0 ): Theodore C. Lemoff NFPA International Delete text as follows: BRINE - As determined in accordance with NFPA 30. NFPA 30 does not cover brine. 4

5 Item #: 5 UMC (205.0, ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 20) Add definition to Section as follows: CRAWL SPACE In a building, an area accessible by crawling, having a clearance less than human height, for access to plumbing or wiring, storage, etc. Revise text as follows: General Ducts Under Floor or Crawl Space. Air ducts installed under a floor in a crawl space shall be installed as follows: so as to maintain a vertical clearance of eighteen (18) inches for all portions of the duct that would obstruct access to any part of the crawl space. (A) Shall not prevent access to any area of the crawl space. (B) Where it is required to move under ducts for access to areas of the crawl space a minimum vertical clearance of eighteen (18) inches shall be provided. To clarify the intent of Section the committee recommends this code change. 5

6 Item #: 6 UMC (205.0, Clothes Dryer ): John K. Taecker Underwriters Laboratories Inc. Revise definition as follows: CLOTHES DRYER An appliance used to dry wet laundry by means of heat derived from the combustion of fuel gases or electric heating elements. Gas-fired clothes dryers are identified as Type 1 or Type 2. Clothes dryers use either fuel gas or electricity as the source for providing the heat to dry the clothes. 6

7 Item #: 7 UMC (206.0 ): John K. Taecker Underwriters Laboratories Inc. Revise text as follows: DAMPERS shall be defined as follows: Fire Damper An automatic-closing metal assembly consisting of one or more louvers, blades, slats, or vanes that closes upon detection of heat so as to restrict the passage of flame and is listed to the applicable complying with recognized standards. Smoke Damper A damper arranged to seal off airflow automatically through a part of an air duct system so as to restrict the passage of smoke and is listed to the applicable recognized standard. To distinguish clearly the purpose of a fire damper. Both fire and smoke dampers need to be listed to the applicable recognized standard, which are UL 555 and UL 555S, respectively, as identified in Chapter 17. 7

8 Item #: 8 UMC (TIA UMC , 206.0, 208.0, , 604.5, 608.1, ): John Ingargiola FEMA Mitigation Add new text as follows: D Design Flood Elevation. The elevation of the design flood, including wave height, relative to the datum specified on the community s legally designated flood hazard map F Flood Hazard Area. The greater of the following two areas: 1. The area within a floodplain subject to a 1 percent or greater chance of flooding in any given year. 2. The area designated as a flood hazard area on a community s flood hazard map, or otherwise legally designated. Flood Hazard Area Subject to High Velocity Wave Action. Area within the flood hazard area which is subject to high velocity wave action, and shown on a Flood Insurance Rate Map or other flood hazard map as Zone V, VO, VE or V Location Protection Against Damage. (Make existing text a subsection with title; remainder unchanged) Protection Against Flood Damage. For buildings located in flood hazard areas, heating, ventilating, airconditioning, refrigeration, miscellaneous heatproducing, and energy-utilizing equipment and appliances shall be elevated at or above the design flood elevation. Exception: Equipment and appliances are permitted to be located below the design flood elevation provided that they are designed and installed to prevent water from entering or accumulating within the components and to resist hydrostatic and hydrodynamic loads and stresses, including the effects of buoyancy, during the occurrence of flooding to the design flood elevation in compliance with the floodresistant construction requirements of the building code Walls below buildings in flood hazard areas subject to high velocity wave action. In flood hazard areas subject to high velocity wave action, equipment and appliances, including piping, shall not be mounted on or penetrate walls intended to break away under flood loads Air Exhaust and Intake Openings. Outside air exhaust openings and air intake openings shall be located at or above the design flood elevation Protection Against Flood Damage. In flood hazard areas, ducts shall be located above the design flood elevation or shall be designed and constructed to prevent water from entering or accumulating within the ducts during floods up to the design flood elevation.if the ducts are located below the design flood elevation, the ducts shall be capable of resisting hydrostatic and hydrodynamic loads and stresses, including the effects of buoyancy, during the occurrence of flooding to the design flood elevation The use of under-floor space shall be limited to dwelling units not more than two stories in height. Except for the floor immediately above the under-floor plenum, supply ducts shall be provided extending from the plenum to registers on other floor levels. Exception: In flood hazard areas, under-floor spaces shall not be used as supply plenums unless the flood opening requirements in the building code are satisfied In flood hazard areas tanks shall be elevated to or above the design flood elevation or they shall be 8

9 designed, constructed, installed and anchored to resist all flood-related and other loads during the design flood, or lesser floods, without release of contents into floodwaters or infiltration by floodwaters into the contents. The code change provides consistency with the regulations of the National Flood Insurance Program (NFIP) and the flood resistant provisions of ASCE 24, which is referenced by the NFPA 5000 and the International Building Code. In particular, the NFIP regulations require that service systems and equipment be elevated above the design flood elevation, but also provide an option to elevating. The alternative is set forth in regulation at 44 CFR 60.3(a)(3)(iii) and (iv), and requires that buildings and structures be constructed with methods and practices that minimize flood damages and, specifically, that electrical, heating, ventilation, plumbing and air conditioning equipment and other service facilities be designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding. Local jurisdictions that have been identified as subject to flooding as indicated on maps prepared for the National Flood Insurance Program (NFIP) are required to regulate development in flood hazard areas in order to qualify for certain forms of federal disaster assistance and for their citizens to be able to purchase federal flood insurance. To protect citizens and their property, it is important that the codes that govern construction include provisions to minimize damage and exposure to flooding. In addition, many local jurisdictions participate in the NFIP s Community Rating System (CRS). The CRS offers discounts on federal flood insurance premiums in communities that administer floodplain management programs that exceed the NFIP minimum requirements. The U.S. Department of Homeland Security/FEMA has determined that the proposed changes to the UMC will result in consistency with the NFIP regulations. Because of the multi-hazard benefits that accrue from administration of building codes, especially codes that include flood-resistant provisions, communities that adopt the UMC and other NFIP-consistent codes will qualify for additional points under the CRS. 9

10 Item #: 9 UMC (207.0, Excess Flow Valve (New) ): Sidney Cavanaugh Cavanaugh Consulting/Rep. Brass Craft Add new definition as follows: EXCESS FLOW VALVE a valve designed to close when the fuel gas passing through exceeds a prescribed flow rate. A needed definition duplicating same definition in the UPC for devices used in fuel gas systems and applications covered by both the plumbing and mechanical codes. 10

11 Item #: 10 UMC (212 0, 225.0, and Table 17 1): Philip Campbell UA Training Specialist Revise as follows: Section Joint, Welded - A gastight joint obtained by the joining of metal or plastic parts in molten state. Section Welder, Pipe - A person who specializes in the welding of pipes and holds a valid certificate of competency from a recognized testing laboratory, based on the requirements of the ASME Boiler and Pressure Vessels code, Section IX for metal pipe and / or based on the requirements of the AWS B2.4 Specification for Welding Procedure and Performance Qualification for Thermoplastics Plastic Piping, Joints, and Fittings. Plastic pipe, tubing, and fittings shall be joined in accordance with the manufacturers instructions. The following shall be observed when making such joints: [NFPA 54:5.6.9] (A) The joint shall be designed and installed so that the longitudinal pullout resistance of the joint will be at least equal to the tensile strength of the plastic piping material. (B) Plastic pipe fittings designed to be joined by thermoplastic welding processes shall comply with AWS B2.4 Specification for Welding Procedure and Performance Qualification for Thermoplastics. Welding shall be performed by certified installers meeting the requirements of AWS B2.4 (BC) Heat-fusion joints shall be made in accordance with qualified procedures that have been established and proven by test to produce gastight joints at least as strong as the pipe or tubing being joined. AWS B2.4 Specification for Welding Procedure and Performance Qualification for Thermoplastics. Joints shall be made with the joining method recommended by the pipe manufacturer. Heat fusion fittings shall be marked "ASTM D 2513." TABLE 17 1 Standards for Equipment and Materials Note: This Chapter has been revised and reformatted in its entirety. No arrows or side bars have been used to signify changes. Standard Number Standard Title [UMC References] AWS B Specifications for Welding Procedures and Performance Qualifications for Thermoplastics [UMC 225.0, (B), (C)] The referenced standard AWS B2.4 Specification for Welding Procedures and Performance Qualification for Thermoplastics was approved by ANSI on February 16, The standard was prepared by AWS B2 Committee on Welding Qualification, which consists of many knowledgeable volunteers form the mechanical and thermoplastic industries, representing varied viewpoints and interest to achieve a consensus. The various methods of welding thermoplastics pipe and fittings are now becoming widely used for joining such pipe and fittings. The code currently does not provide adequate requirements to ensure that these installations are being performed by qualified installers. 11

12 Item #: 11 UMC (215.0 ): John K. Taecker Underwriters Laboratories Inc. Revise text as follows: MANUFACTURER S INSTALLATION INSTRUCTIONS Printed instructions included with equipment or devices for the purpose of providing information regarding safe and proper installation and use whether or not as part of the conditions of listing. Instructions not only provide installation instructions, but also use of the product. 12

13 Item #: 12 UMC (216.0, ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 6) Delete the definition of Noncombustible Material in Section 502 in its entirety and amend the definition of Noncombustible in Section 216 as follows: NONCOMBUSTIBLE As applied to building construction material, means a material that in the form in which it is used is either one of the following: (1) Material of which no part will ignite and burn when subjected to fire. A material that in the form in which it is used and under the conditions anticipated, will not ignite, burn, support combustion, or release flammable vapors when subjected to fire or heat. Materials that are reported as passing ASTM E 136, Standard Test Method for Behavior of Materials in a vertical Tube Furnace at 750ºC, shall be considered noncombustible materials. (2) Material having a structural base of noncombustible material as defined in 1 above, with a surfacing material not over 1/8 inch ( 3.2 mm ) thick that has a flame spread index not higher than fifty (50). Noncombustible does not apply to surface finish materials. Material required to be noncombustible for reduced clearances to flues, heating appliances, or other sources of high temperature shall refer to material conforming to 1 above. No material shall be classed as noncombustible that is subject to increase in combustibility or flamespread index beyond the limits herein established, through the effects of age, moisture, or other atmospheric condition NONCOMBUSTIBLE MATERIAL. A material that, in the form in which it is used and under the conditions anticipated, will not ignite, burn, support combustion, or release flammable vapors when subjected to fire or heat, Materials that are reported as passing ASTM E 136, standard Test Method for Behavior of Materials in a vertical tube Furnace at 750ºC shall be considered noncombustible materials. The intent when the code was revised to the common code format was to have definitions that apply to the code in general in Chapter 2 and definitions applying to a specific Chapter to be in that Chapter. Section definition for noncombustible would allow gypsum wallboard to be used as a noncombustible material for some applications, while Section definition for noncombustible material would not. The Section definition for Limited Combustible Material is similar to Section definition for noncombustible. Chapter 5 is partially correct and Chapter 2 is partially correct; therefore both should be merged together in Chapter 2 and removed from Chapter 5. 13

14 Item #: 13 UMC (217.0 Group A, B, E, F, H, I, M, R, S, and U ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 7) Delete all occupancy classifications from Section (Group A,B,E,F,H,I,M,R.S and U) including their subdivisions in their entirety from the UMC and amend the definition of Occupancy Classification as follows: OCCUPANCY CLASSIFICATION Classifications are defined in the Building Code Occupancy Classifications should be the same as those in the local building code. 14

15 Item #: 14 UMC (218.0 ): James Paschal Bodycote/Rep. Aquatherm Add text as follows: PP-an abbreviation for polypropylene. This definition is needed in the code to support other proposed revisions to include polypropylene piping systems. 15

16 Item #: 15 UMC (223.0 ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 12) Delete without substitution: UNCONFINED SPACE.- A room or space having a volume equal to at least fifty (50) cubic feet (1.42 m3) per 1,000 Btu/h (0.293 kw) of the aggregate input rating of all fuel-burning appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed, through openings not furnished with doors, are considered a part of the unconfined space. A term that is no longer used in the code should not be defined as it has the potential to confuse the users of the code. 16

17 Item #: 16 UMC (Table 3 1 Note 11): Theodore C. Lemoff NFPA International Revise text of table 3 1 Note as follows: 11 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. [NFPA 54: ] (Portions of table not shown do not change) This proposal is not original material; its reference/source is as follows: NFPA 54, National Fuel Gas Code 17

18 Item #: 17 UMC (302.4 (New) ): John K. Taecker Underwriters Laboratories Inc. Add new text as follows: Electrical Appliances. Electrical appliances shall be installed in accordance with the requirements of NFPA 70, National Electrical Code, and applicable requirements in this code. The UMC states in Section that oil-burning appliances are required to be installed with NFPA 31. Requirements for installation of fuel gas equipment is contained in various chapters in the UMC. This new section would note that electrical appliances are intended to be installed in accordance with the National Electrical Code (NEC). 18

19 Item #: 18 UMC (303.1 ): Theodore C. Lemoff NFPA International Revise text as follows: Connecting Gas Equipment Gas utilization Appliances and equipment shall be connected to the building piping in compliance with Section by one of the following: (1) Rigid metallic pipe and fittings. (2) Semi-rigid metallic tubing and metallic fittings. Aluminum alloy tubing shall not be used in exterior locations. (3) Listed connectors used in accordance with the terms of their listing that are completely in the same room as the equipment. (4) Listed gas hose connectors in accordance with Section (5) Gas-fired food service (commercial cooking) equipment listed for use with casters or otherwise subject to movement for leaning, and other large and heavy gas utilization equipment that can be moved, shall be connected in accordance with the connector manufacturer's installation instructions using a listed appliance connector complying with ANSI Z21.69, Standard for Connectors for Movable Gas Appliances. (6) In Sections 303.1(2), (3), and (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 rainwater), detergents, or sewage. [NFPA 54: 9.6.1] To identify text extracted from NFPA 54 as such. This proposal is not original material; its reference/source is as follows: NFPA 54, National Fuel Gas Code 19

20 Item #: 19 UMC (303.1, 303.2, ): John K. Taecker Underwriters Laboratories Inc. Delete without substitution: Connecting Gas Equipment Gas utilization equipment shall be connected to the building piping in compliance with Section by one of the following: (1) Rigid metallic pipe and fittings. (2) Semi-rigid metallic tubing and metallic fittings. Aluminum alloy tubing shall not be used in exterior locations. (3) Listed connectors used in accordance with the terms of their listing that are completely in the same room as the equipment. (4) Listed gas hose connectors in accordance with Section (5) 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 manufacturer's installation instructions using a listed appliance connector complying with ANSI Z21.69, Standard for Connectors for Movable Gas Appliances. (6) In Sections 303.1(2), (3), and (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 rainwater), detergents, or sewage Use of Gas Hose Connectors. Listed gas hose connectors shall be used in accordance with the terms of their listing and as follows: (A) Indoor. Indoor gas hose connectors shall be permitted to be used with laboratory, shop, or ironing equipment that requires mobility during operation. An equipment shutoff valve shall be installed where the connector is attached to the building piping. The connector shall be of minimum length and shall not exceed 6 feet. (1.8 m). The connector shall not be concealed and shall not extend from one room to another or pass through wall partitions, ceilings, or floors. (B) Outdoor. Outdoor gas hose connectors shall be permitted to be used to connect portable outdoor gasfired equipment. An equipment shutoff valve, a listed quick-disconnect device, or a listed gas convenience outlet shall be installed where the connector is attached to the supply piping and in such a manner so as to prevent the accumulation of water or foreign matter. This connection shall only be made in the outdoor area where the equipment is to be used Connection of Portable and Mobile Industrial Gas Equipment. (A) Portable industrial gas utilization equipment or equipment requiring mobility or subject to vibration shall be permitted to be connected to the building gas piping system by the use of flexible hose suitable and safe for the conditions under which it can be used. (B) Industrial gas utilization equipment requiring mobility shall be permitted to be connected to the rigid piping by the use of swivel joints or couplings that are suitable for the service required. Where swivel joints or couplings are used, only the minimum number required shall be installed. (C) Industrial gas utilization equipment subject to vibration shall be permitted to be connected to the building piping system by the use of all metal flexible connectors suitable for the service required. (D) Where flexible connections are used, they shall be of the minimum practical length and shall not extend from one room to another or pass through any walls, partitions, ceilings, or floors. Flexible connections shall not be used in a concealed location. They shall be protected against physical or thermal damage and shall be provided with gas shutoff valves in readily accessible locations in rigid piping upstream from the flexible connections. [NFPA 54:8.5.1, 8.5.2, 8.5.3] These requirements are already covered by Sections , , and , respectively. The requirements in the proposed deleted sections are in conflict with the more specific related requirements in Chapter 12. For example, Section includes the use of CSST, where Section does not include CSST in the list of permissible means of connection. 20

21 Item #: 20 UMC (303.2 ): Theodore C. Lemoff NFPA International Revise text as follows: Use of Gas Hose Connectors. Listed gas hose connectors shall be used in accordance with the terms of their listing and as follows: (A) Indoor. Indoor gas hose connectors shall be permitted to be used with laboratory, shop, or ironing equipment that requires mobility during operation. An equipment shutoff valve shall be installed where the connector is attached to the building piping. The connector shall be of minimum length and shall not exceed 6 feet. (1.8 m). The connector shall not be concealed and shall not extend from one room to another or pass through wall partitions, ceilings, or floors. (B) Outdoor. Outdoor gas hose connectors shall be permitted to be used to connect portable outdoor gas-fired equipment. An equipment shutoff valve, a listed quick-disconnect device, or a listed gas convenience outlet shall be installed where the connector is attached to the supply piping and in such a manner so as to prevent the accumulation of water or foreign matter. This connection shall only be made in the outdoor area where the equipment is to be used. [NFPA 54: 9.6.2] Text extracted from NFPA 54 is identified as such. (NFPA 54 NOT attached) This proposal is not original material; its reference/source is as follows: NFPA 54, National Fuel Gas Code 21

22 Item #: 21 UMC (304.6 ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 13A) Revise text as follows: Liquefied Petroleum Gas Facilities. Containers, container valves regulating equipment, and appurtenances for the storage and supply of liquefied petroleum gas shall be installed in accordance with the Fire Code Chapter 13 In Section Liquified Petroleum Gas Facilities, the more appropriate reference would be Chapter 13 which defines Liquid Petroleum Gas Facilities in Section and references NFPA 58 in Section

23 Item #: 22 UMC (305.1 ): John K. Taecker Underwriters Laboratories Inc. Revise text as follows: Accessibility for Service. All gas utilization equipment shall be located with respect to building construction and other equipment so as to permit access to the gas utilization equipment. Sufficient clearance shall be maintained to permit cleaning of heating surfaces; the replacement of filters, blowers, motors, burners, controls, and vent connections; the lubrication of moving parts where necessary; the adjustment and cleaning of burners and pilots; and the proper functioning of explosion vents, if provided. For attic installation, the passageway and servicing area adjacent to the equipment shall be floored. Requirements for accessibility for service of utilization equipment should apply to all types of appliances, gas fired, oil fired, and electrical. 23

24 Item #: 23 UMC (305.2 (New) ): Pennie Feehan Cast Iron Soil Pipe Institute Add new text as follows: Equipment on Roofs General Equipment on roof shall be designed or enclosed so as the withstand climatic conditions in the areas in which it is installed. Where enclosures are provided, each enclosures shall be of reasonable height, and shall have at least a thirty (30) inch (760m) clearance between the entire service access panel(s) of the equipment and the wall of the enclosure Roofs on which equipment is to be installed shall be capable of supporting the additional load or shall be reinforced to support the additional load All access locks, screws, and bolts shall be of corrosion-resistant material Installation of Equipment on Roofs Equipment shall be installed on accordance with its listing and the manufacture s installation instructions Equipment shall be installed on a well-drained surface of the roof. At least 6 ft. between any part of the equipment and the edge of a roof or similar hazard, or rigidly fixed rail, guards, parapets, or other building structures at least forty-two (42) inches (91.1m) in height shall be provided on the exposed side All equipment requiring an external source of electrical power for its operation shall be provided with (1) readily accessible electrical disconnecting means within sight of the equipment, and (2) a 120 V AC grounding-type receptacle outlet on the roof adjacent to the equipment. The receptacle outlet shall be on the supply side of the disconnect switch Where water stands on the roof at the equipment or in the passageways to the equipment, or where the roof is of a design having a water seal, a suitable platform walkway, or both shall be provided above the waterline. Such platform(s) or walkway(s) shall be located adjacent to the equipment and control panels so that the equipment can be safely serviced where water stands on the roof Access to Equipment on Roofs Equipment located on roofs or other elevated locations shall be accessible Buildings of more than fifteen (15) feet (4.6m) in height shall have an inside means of access to the roof, unless other means acceptable to the roof, unless other means acceptable to the Authority Having Jurisdiction are used The inside means of access shall be a permanent of foldaway inside stairway of ladder, terminating is an enclosure, scuttle, or trapdoor. Such scuttles or trapdoors shall be at least twenty-two (22) inches x twenty-four (24) (560 mm x 610 mm) in size, shall open easily and safely under all conditions, especially snow, and shall be constructed so as to permit access on the inside. At least six (6) feet (1.8m) of clearance shall be available between the access opening and the edge of the roof or similar hazard, or rigidly fixed rails or guards a minimum of forty-two (42) inches (1.1m) in height shall be provided on the exposed side. Where parapets or other building structures are utilized in lieu of guards or rails, they shall be a minimum of forty-two (42) inches (1.1m) in height Permanent lighting shall be provided at the roof access. The switch for such lighting shall be located inside the building near the access means leading to the roof. The only section that addresses roofs is Section and the section refers to gas utilization equipment. I feel that the code is missing other pieces of equipment that must be accessed safely for installations, inspection and servicing. This proposal is not original material; its reference/source is as follows: UMC Section

25 Item #: 24 UMC ( , , 307.3, through ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 13) Revise text as follows: The electrical rating in volts, amperes (or watts), and, for other than single phase, the number of phases. In addition, the appliance shall be permanently and legibly marked at the factory with: The output rating in Btu/h or kw Heat Pump and Electric Cooling Appliances. Heat pumps and electric cooling appliances shall bear a permanent and legible factory-applied nameplate on which shall appear: The name or trademark of the manufacturer The catalog model nomenclature The amount and type of refrigerant The factory test pressures or pressures applied The electrical rating in volts, amperes, and for other than single phase, the number of phases The output rating in Btu/h or W The electrical rating in volts, amperes, or watts of each field replaceable electrical component The symbol of an approved agency certifying compliance of the equipment with recognized standards Required clearances from combustible surfaces on which or adjacent to which it may be mounted. Also, the appliance shall be accompanied by clear and compete installation instructions, including required clearances from combustibles other than mounting or adjacent surfaces, and temperature rating of fieldinstalled wiring connections if over 140º F (60º C). UL 1995, Standard for Safety (for electrical) Heating and Cooling Equipment, shows the information required to be placed on the appliance label in Section Additional requirements should be added for some products such as heat pumps since these are also electrical appliances. 25

26 Item #: 25 UMC (313.0 (New) ): John Halliwill Halliwill and Associates/Rep. Self Add new text as follows: Water Supply. Water supplies and backflow protection shall be as required by the Uniform Plumbing Code. This proposed language currently appears in Chapter 11, Refrigeration. It should also appear here in the general requirements because there are other areas of the code where the water supply is connected to the appliances and equipment covered by this code, such as warm air appliances containing humidification equipment, waterbased fire protection systems in hoods and boilers used for hydronic/steam heating. This proposal is not original material; its reference/source is as follows: 2006 UPC 26

27 Item #: 26 UMC (NFPA 96 Extracts ): Theodore C. Lemoff NFPA International Revise extracts as follows: (See attached Items 1 through 20 on pages 27 1 through 27 4) Extracts from other documents should be maintained at the most recent edition, which will be the 2006 edition of NFPA

28 Item AUTOMATIC. Operating by its own mechanism when actuated by some impersonal influence, such as a change in current, strength, pressure, temperature, or mechanical configuration. AUTOMATIC. That which provides a function without the necessity of human intervention. [101:3.3] [NFPA ] Item 2 CERTIFIED. A formally stated recognition and approval of an acceptable level of competency, acceptable to the AHJ. [NFPA ] Item 3 QUALIFIED. A competent and capable person or company that has met the requirements and training for a given field acceptable to the AHJ. [NFPA ] Item 4 TRAINED. A person who has become proficient in performing a skill reliably and safely through instruction and practice/field experience acceptable to the AHJ. [NFPA ] Item Cooking equipment that has been listed in accordance with UL 197 or an equivalent standard for reduced emissions shall not be required to be provided with an exhaust system. [NFPA *] The listing evaluation of cooking equipment covered by Section shall demonstrate that the grease discharge at the exhaust duct of a test hood placed over the appliance shall not exceed 5 mg/m 3 when operated with a total airflow of cubic meters per second (500 dm). [NFPA ] The responsibility for inspection, maintenance, and cleanliness of the ventilation control and fire protection of the commercial cooking operations shall be the ultimate responsibility of the owner of the system provided that this responsibility has not been transferred in written form to a management company or other party. [NFPA ] (Renumber existing sections as required) Item Field-applied grease duct enclosures and factory-built grease duct enclosures shall be listed in accordance with UL 2221, Standard for Tests of Fire Resistive Grease Duct Enclosure Assemblies, or equivalent standard and installed in accordance with the manufacturer s instructions and the listing requirements. [NFPA ] (Renumber existing sections as required) 27-1

29 Item The distance between the grease removal device and the cooking surface shall be as great as possible but not less than 18 in. (457.2mm). [NFPA ] Where grease removal devices are used in conjunction with charcoal or charcoal-type broilers, including gas or electrically heated charbroilers, a minimum vertical distance of 4 ft.(1.22 m) shall be maintained between the lower edge of the grease removal device and the cooking surface. [NFPA ] Exception No. 1: Grease removal devices supplied as part of listed hood assemblies shall be installed in accordance with the terms of the listing and the manufacturer s instructions. [NFPA ] Exception No. 2: For cooking equipment without exposed flame and where flue gases bypass grease removal devices, the minimum vertical distance shall be permitted to be reduced to not less than 6in. (152.4 mm). [NFPA ] Exception No. 3: Where a grease removal device is listed for separation distances less than those required in and , the listing requirements shall be permitted. [NFPA ] Item Grease filters shall be listed and constructed of steel or listed equivalent material [NFPA ] and shall be of rigid construction that will not distort or crush under normal operation, handling, and cleaning conditions. [NFPA ] Filters shall be tight fitting and firmly held in place and grease filters shall be arranged so that all exhaust air passes through the grease filters. [NFPA ] Item On horizontal ducts, at least one 20 in. by 20 in. (508 mm by 508 mm) opening shall be provided for personnel entry. [NFPA ] Horizontal ducting shall be secured sufficiently to allow for he weight of personnel entry into the duct. [NFPA ] Where an opening of this size is not possible, openings large enough to permit thorough cleaning shall be provided at 12 ft. (3.7m) intervals. Support systems for horizontal grease duct systems 609 mm (24 in.) and larger in any cross-sectional dimension shall be designed for the weight of the ductwork plus 363 kg (800 lb) at any point in the duct systems. [NFPA ] Item In existing systems, when changes in the cooking media, positioning, or replacement of cooking equipment occur, the fire-extinguishing system shall be made to comply with [NFPA ] (Renumber existing sections as required) Item Grease removal devices, hood exhaust plenums, and exhaust ducts requiring protection in accordance with Section shall be permitted to be protected by a listed fixed baffle hood containing a constant or fireactuated water-wash system that is listed to extinguish a fire in the grease removal devices, hood exhaust plenums, and exhaust ducts. Each such area not provided with a listed water-wash extinguishing system shall be provided with an appropriate fire suppression system listed for the purpose. and in compliance with UL 300 or other equivalent standards and shall be installed in accordance with the requirements of their listing. [NFPA ] 27-2

30 Item Modification of Existing Hood Systems Any abandoned pipe or conduit from a previous installation shall be removed from within the hood, plenum, and exhaust duct. [NFPA ] Penetrations and holes resulting from the removal of conduit or piping shall be sealed with listed or equivalent liquid tight sealing devices. [NFPA ] The addition of obstructions to spray patterns from the cooking appliance nozzle(s) such as baffle plates, shelves, or any modification shall not be permitted. [NFPA ] Changes or modifications to the hazard after installation of the fire-extinguishing systems shall result in reevaluation of the system design by a properly trained and qualified person(s) or company. [NFPA ] (Renumber existing sections as required) Item Secondary filtration and pollution control equipment shall be operated in accordance with the terms of their listing and the manufacturer's recommendations. [NFPA ] Inspection and maintenance of equipment allowed in Section shall be conducted by properly trained and qualified persons at a frequency determined by the manufacturer's instructions or equipment listing. [NFPA ] Item Inspection. An inspection and servicing Maintenance of the fire-extinguishing systems and listed exhaust hoods containing a constant or fire-activated water system that is listed to extinguish a fire in the grease removal devices, hood exhaust plenums, and exhaust ducts shall be made by properly trained, qualified, and certified person(s) or company acceptable to the Authority Having Jurisdiction at least every six months. by properly trained and qualified persons. [NFPA ] Item Fusible links (including fusible links on fire-actuated damper assemblies) and automatic sprinkler heads shall be replaced at least annually semiannually, or more frequently if necessary where required by the manufacturer, to ensure proper operation of the system. Other detection devices shall be serviced or replaced in accordance with the manufacturer's recommendations. Exception: Where automatic bulb-type sprinklers or spray nozzles are used and annual examination shows no buildup of grease or other material on the sprinkler or spray nozzles. [NFPA ] Item Upon inspection, if found to be contaminated with deposits from grease-laden vapors, the entire exhaust system the contaminated portions of the exhaust system shall be cleaned by a properly trained, qualified, and certified company or person(s) acceptable to the Authority Having Jurisdiction in accordance with Section [NFPA ] 27-3

31 Item Cooking Equipment Maintenance. [NFPA ] An inspection and servicing of the cooking equipment shall be made at least annually by properly trained and qualified persons. [NFPA ] Cooking equipment that collects grease below the surface, behind the equipment, or in cooking equipment flue gas exhaust, such as griddles or charbroilers, shall be inspected and, if found with grease accumulation, cleaned by a properly trained, qualified, and certified person acceptable to the authority having jurisdiction. [NFPA ] Item A recirculating system shall not use cooking equipment that exceeds that recirculating system's labeled maximum limits for that type of equipment, stated in maximum energy input, maximum cooking temperature, and maximum square area of cooking surface or cubic area volume of cooking cavity. The listing label shall not show the type(s) of cooking equipment tested and the preceding maximum limits. [NFPA ] Item All solid-fuel appliances (whether or not under a hood) with fireboxes of 5 cubic ft. (0.14m 3 ) volume or less shall at least have a listed 2-A rated water-type or wet chemical fire extinguisher or a 1.6 gal (6 L) wet chemical fire extinguisher listed for Class K fires in accordance with NFPA 10, Standard for Portable Fire Extinguishers, in the immediate vicinity of the appliance. Two portable fire extinguishers of at least 1-1/2 gal. (5.7 L) each and containing potassium citrate, potassium acetate, or potassium carbonate solutions shall be permitted to be used instead of the one 2-A-rated portable fire extinguisher. [NFPA ] Item Solid-fuel appliances with fireboxes exceeding 5 cubic ft. (0.14 m 3 ) shall be provided with a fixed-waterpipe system with a hose in the immediate vicinity of the appliance. [NFPA ] The hose shall be equipped with an adjustable nozzle capable of producing a fine to medium spray or mist. [NFPA ] The nozzle shall be of the type that cannot produce a straight stream. [NFPA ] The system shall have a minimum operating pressure of 40 psi (275.8 kpa) and shall provide a minimum of 5 gpm. [NFPA ] 27-4

32 Item #: 27 UMC (502.0 ): Theodore C. Lemoff NFPA International Revise the definition as follows: NONCOMBUSTIBLE MATERIAL. A material that, in the form in which it is used and under the conditions anticipated, will not ignite, burn, support combustion, or release flammable vapors when subjected to fire or heat. Materials that are reported as passing ASTM E 136, Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750 C, shall be are considered noncombustible materials. [NFPA 220: 3.3.4] The definition, which is taken from NFPA 220, is revised to the current edition of NFPA 220. It is not appropriate to use shall in a definition, as a definition is not a requirement. (NFPA 220 NOT attached) This proposal is not original material; its reference/source is as follows: NFPA 220, Standard on Types of Building Construction (2006 edition) 28

33 Item #: 28 UMC (502.0 ): Theodore C. Lemoff NFPA International Add new definition: Clean(ing). For kitchen exhaust systems and cooking equipment, the act of removing grease, oil deposits and other residue. [NFPA 220] This new definition of "cleaning" is required to emphasize that this action is one of fire prevention not simply cosmetic. (NFPA 220 is NOT attached) This proposal is not original material; its reference/source is as follows: NFPA 220, Standard on Types of Building Construction (2006 Edition) 29

34 Item #: 29 UMC (502.0 ): Theodore C. Lemoff NFPA International Provide extract references for the following defined terms: Access Panel, Air Intakes, Air Pollution Control Devices, Appurtenance, Baffle Plate, Clearly Identified, Closed Combustible Construction, Concealed Spaces, Continuous Enclosure, Continuous Weld, Damper, Dips, Discharge, Factory-Built Grease Enclosures, Field-Applied Grease Duct Enclosures, Fume Incinerators, Grease Ducts, Grease Removal Devices, Greasethight, High Broiler, High Limit Control, Hood (and Fixed Baffle), Interconnected, Labeled, Liquidtight, Listed, Open Combustible Construction, Pitched, Recirculating Systems, Removable, Salamander Broiler, Solid Cooking Fuel, Solvent, Spark Arrester, Standard, Thermal Recovery Unit, Trap, Upright Broiler The listed terms are extracted form NFPA 96 and should be cited as such. (NFPA 96 is NOT attached) This proposal is not original material; its reference/source is as follows: NFPA 220, Standard on Types of Building Construction (2006 edition) 30

35 Item #: 30 UMC (502.0 ): Theodore C. Lemoff NFPA International Add text as follows: Certified Person. A person trained and certified by the equipment manufacturer, or by a recognized organization through a formal certification program for the system to be serviced or cleaned, that is acceptable to the authority having jurisdiction. This new definition, which will be included in the upcoming edition of NFPA 96, was added to NFPA 96 to clarify intent as to the qualifications of a certified person. This proposal is not original material; its reference/source is as follows: NFPA 96, Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations (2007 edition proposed) 31

36 Item #: 31 UMC (502.0 ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 2) Delete the definition of Automatic in Chapter 5 as follows: AUTOMATIC. That which provides a function without the necessity of human intervention. [NFPA 96: 3.3.6] The intent when the code was revised to the common code format was to have definitions that apply to the code in general in Chapter 2 and definitions applying to a specific Chapter to be in that Chapter. Since the definition of automatic is the same in both chapters 2 and 5 it is not necessary to have this definition in Chapter 5. 32

37 Item #: 32 UMC (502.0 ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 4) Delete without substitution: DAMPER. A valve or plate within a duct or its terminal components for controlling draft or the flow of gases, including air. The intent when the code was revised to the common code format was to have definitions that apply to the code in general in Chapter 2 and definitions applying to a specific Chapter to be in that Chapter. Damper is adequately defined in Section

38 Item #: 33 UMC (502.0 ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 5) Delete without substitution: LABELED. Equipment or materials 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 equipment or materials, and by whose labeling the manufacturer indicates compliance with appropriate standards or performance in a specified manner. LISTED. Equipment, materials, or services included in a list published by an organization that is acceptable to the Authority Having Jurisdiction and concerned with evaluation of products or services, that maintains periodic inspection of production of listed equipment or materials or periodic evaluation of services, and whose listing states that the equipment, material, or service meets identified standards or has been tested and found suitable for a specified purpose. The intent when the code was revised to the common code format was to have definitions that apply to the code in general in Chapter 2 and definitions applying to a specific Chapter to be in that Chapter. The Section definition for Labeled, Listed (Third Party Certified) and Listing Agency, is sufficient. 34

39 Item #: 34 UMC (502.0 ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 9) Delete without substitution: QUALIFIED. A competent and capable person or company that has met the requirements and training for a given field acceptable to the Authority Having Jurisdiction. [NFPA 96: ] The intent when the code was revised to the common code format was to have definitions that apply to the code in general in Chapter 2 and definitions applying to a specific Chapter to be in that Chapter. Since the definition of QUALIFIED is the same in both Chapters 2 and 5, it is not necessary to have this definition in Chapter 5. 35

40 Item #: 35 UMC (502.0 ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 10) Delete without substitution: STANDARD. A document, the main text of which contains only mandatory provisions using the word shall to indicate requirements and that is in a form generally suitable for mandatory reference by another standard or code or the adoption into law. Nonmandatory provisions shall be located in an appendix, footnote, or fine-print note and are not to be considered a part of the requirements of a standard. The intent when the code was revised to the common code format was to have definitions that apply to the code in general in Chapter 2 and definitions applying to a specific Chapter to be in that Chapter. Since the definition of STANDARD is the same in both Chapters 2 and 5, it is not necessary to have this definition in Chapter 5. 36

41 Item #: 36 UMC (502.0 ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 11) Delete without substitution: TRAINED. A person who has become proficient in performing a skill reliably and safely through instruction and practice/field experience acceptable to the Authority Having Jurisdiction. [NFPA ] The intent when the code was revised to the common code format was to have definitions that apply to the code in general in Chapter 2 and definitions applying to a specific Chapter to be in that Chapter. Since the definition of TRAINED is the same in both Chapters 2 and 5, it is not necessary to have this definition in Chapter 5. 37

42 Item #: 37 UMC (502.0 ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 18) Add new text as follows: SECONDARY FILTRATION Fume incinerators, thermal recovery units, air pollution control devices or other filtration media installed in ducts or hoods located in the path of travel of exhaust products after the initial filtration. Section introduces the term Secondary Filtration which is not defined in the code. The equipment described in Section and referenced in Section is secondary filtration equipment. 38

43 Item #: 38 UMC (502.2 ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 3) Delete without substitution: CERTIFIED. A formally stated recognition and approval of an acceptable level of competency, acceptable to the Authority Having Jurisdiction. [NFPA ] The intent when the code was revised to the common code format was to have definitions that apply to the code in general in Chapter 2 and definitions applying to a specific Chapter to be in that Chapter. Since the definition of certified is the same in both chapters 2 and 5 it is not necessary to have this definition in Chapter 5. 39

44 Item #: 39 UMC (504.1 ): Steven T. Taylor Taylor Engineering LLC/Rep. Self Add new text as follows: Makeup and Exhaust-Air Ducts. Environmental air ducts not regulated by other provisions of this code shall comply with this section. Ducts shall be substantially airtight and shall comply with the provisions of Chapter 6. Exhaust ducts under positive pressure shall not extend into or through ducts or plenums. Exhaust ducts shall terminate outside the building and shall be equipped with back-draft dampers. Environmental air ducts which have an alternate function as a part of an approved smoke-control system do not require design as Class 1 product-conveying ducts. The current requirement was changed as indicated above by the Mechanical Technical Committee (based on a motion by Steve Taylor) a few years ago but somehow the change failed to make it into 2006 version. The rationale for the change is to make this section consistent with Section which states, in part. Exhaust ducts under positive pressure and venting systems shall not extend into or pass through ducts or plenums. Section applies to all duct systems whereas Section applies only to environmental air exhaust ducts, such as toilet exhaust air duct. It does not make sense to have environmental air ducts, To avoid conflict with Section

45 Item #: 40 UMC (TIA , 504.1): Steven T. Taylor Taylor Engineering LLC Revise text as follows: Makeup and Exhaust-Air Ducts. Environmental air ducts not regulated by other provisions of this code shall comply with this section. Ducts shall be substantially airtight and shall comply with the provisions of Chapter 6. Exhaust ducts under positive pressure shall not extend into or through ducts or plenums. Exhaust ducts shall terminate outside the building and shall be equipped with back-draft dampers. Environmental air ducts which have an alternate function as a part of an approved smoke-control system do not require design as Class 1 product-conveying ducts. The current requirement was changed as indicated above by the Mechanical TC (based on a motion by Steve Taylor) a few years ago but somehow the change failed to make it into 2006 version. The rationale for the change is to make this section consistent with Section which states, in part. Exhaust ducts under positive pressure and venting systems shall not extend into or pass through ducts or plenums. Section applies to all duct systems whereas Section applies only to environmental air exhaust ducts, such as toilet exhaust air duct. It does not make sense to have environmental air ducts. To avoid conflict with Section

46 Item #: 41 UMC ( ): Leonard Ramociotti LAR Consultants/Rep. Self Revise text as follows: Length Limitation. Unless otherwise permitted or required by the dryer manufacturer s installation instructions and approved by the Authority Having Jurisdiction, The domestic dryer moisture exhaust ducts shall not exceed a total combined horizontal and vertical length of fourteen (14) feet (4,263 mm), including two (2) 90 degree (1.57 rad) elbows. Two (2) feet (610 mm) shall be deducted for each 90 degree (1.57 rad) elbow in excess of two. This portion of the paragraph is not enforceable, since the builders are not required by any code to install the dryers in any single family residence, condo, or apartment building, and the installation instructions are never available at the time of construction. 42

47 Item #: 42 UMC (504.5 ): Leon Alevantis California Department of Health Services Revise text as follows: Termination of Environmental Ducts Separation distances between terminations of Eenvironmental air ducts exhausts and openings into buildings shall be no less than the distances listed in Table 5 2. In addition, terminations of environmental ducts shall be and no less than : three (3) feet (914 mm) from property line; three (3) feet (914 mm) from openings into the building TABLE 5 2 Minimum Separation Distances Between Environmental Duct Terminations and Building Openings Object Minimum Distance, ft (m) Significantly contaminated exhaust (Note 1) 15 (5) Noxious or dangerous exhaust (Notes 2 and 3) 30 (10) Cooling tower exhaust (see also Section ) 25 (7.5) Note 1: Significantly contaminated exhaust is exhaust air with significant contaminant concentration, significant sensory-irritation intensity, or offensive odor. Note 2: Laboratory fume hood exhaust air outlets shall be in compliance with NFPA and ANSI/AIHA Z Note 3: Noxious or dangerous exhaust is exhaust air with highly objectionable fumes or gases and/or exhaust air with potentially dangerous particles, bioaerosols, or gases at concentrations high enough to be considered harmful. Information on separation criteria for industrial environments can be found in the ACGIH Industrial Ventilation Manual 3 and in the ASHRAE Handbook HVAC Applications. 4 1 NFPA , Standard on Fire Protection for LaboratoriesUsing Chemicals. National Fire Protection Association, Quincy, MA. 2 ANSI/AIHA Z , Standard for Laboratory Ventilation. American Industrial Hygiene Association, Fairfax, VA. 3 Industrial Ventilation: A Manual of Recommended Practice, 23rd Edition, American Conference of Governmental Industrial Hygienists (ACGIH), Committee on Industrial Ventilation, Lansing, MI ASHRAE Handbook Heating, Ventilating, and Air-Conditioning Applications. American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., Atlanta, GA. Exhaust ducts located 3 feet from building intakes may result in very high level of pollutant exposure to the occupants of a building. ASHRAE Standard entitled Ventilation for Acceptable Indoor Air Quality has developed specific separation distances between building intakes and various sources of exhausts (listed in Table 5 1 of ). The recommended distances were developed based on existing research. It is therefore imperative that building codes reflect this knowledge, thus providing a reasonable level of occupant protection against pollutants entering building intakes from exhaust ducts. This proposal is not original material; its reference/source is as follows: Current knowledge and standard of care. See above discussion for recommendations by ASHRAE. 43

48 Item #: 43 UMC (504.5 ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 15) Revise text as follows: Termination of environmental Air Ducts. Environmental air duct exhaust: shall terminate a minimum of three (3) feet (914 mm) from property line and three (3) feet (914 mm) from openings into the building. The intent of the this section is not clear. Note to Technical Committee: The task group further recommends that property line be defined and consideration be given to extending to centerline of streets and public ways. The task group was not able to decide on an appropriate definition. 44

49 Item #: 44 UMC (506.9, Table 5 7 and 5 8): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 16) Delete Tables 5 7 and 5 8 in their entirety and amend Section as follows: Exhaust Outlets. Outlets for exhausts that exceed 600ºF (315ºC) shall be in accordance with Table 5 7. The termination point for exhaust ducts discharging to the atmosphere shall be not less than the following: Ducts conveying explosive or flammable vapors, fumes, or dusts: thirty (30) feet (9,144 mm) from property line; ten (10) feet (3,048 mm) from openings into the building, six (6) feet (1,829 mm) from exterior walls or roofs; thirty (30) feet (9,144 mm) from combustible walls or openings into the building that are in the direction of the exhaust discharge; ten (10) feet (3,048 mm) above adjoining grade Other product-conveying outlets: ten (10) feet (3.048 mm) from property line; three (3) feet (914 mm) from exterior wall or roof; ten (10) feet (3,048 mm) from openings into the building; ten (10) feet (3,048 mm) above adjoining grade. The content of Tables 5 7 and 5 8 are not applicable to Chapter 5. Venting of appliances is now covered in Chapter 8. Tables 8 1 and 8 2 now provide the requirements for type of venting system and vent termination requirements. Table 5 8 should be deleted as it is now covered in Table 8 1. Table 5 7 should be deleted and the first sentence of Section should also be deleted. The committee is not aware of any exhaust temperatures exceeding 600º F for product conveying systems as referred to in Section Also, Table 5 7 deals with clearances for chimneys, not ducts. 45

50 Item #: 45 UMC ( ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 17) Revise text as follows: All interior surfaces of the exhaust system shall be reasonably accessible for cleaning and inspection purposes. Currently Section requires interior surfaces of the exhaust system be reasonably accessible, but reasonably accessible is not defined, accessible is defined. 46

51 Item #: 46 UMC (507.2 ): Theodore C. Lemoff NFPA International Delete and replace as follows: Clearance Except where enclosures are required, hoods, grease removal devices, exhaust fans, and ducts shall have a clearance of at least eighteen (18) inches (457.2 mm) to combustible material, three (3) inches (76.2 mm) to limitedcombustible material, and 0 inches (0 mm) to noncombustible material. Exception No. 1: Where the hood, duct, or grease removal device is listed for lesser clearances. Exception No. 2: Reduced clearance to combustible material if the combustible material is protected as follows: (a) inch (0.33 mm) (no. 28 gauge) sheet metal spaced out one (1) inch (25.4 mm) on noncombustible spacers shall have nine (9) inch (228.6 mm) clearance to combustible material. (b) inch (0.69 mm) (No. 22 gauge) sheet metal on one (1) inch (25.4 mm) mineral wool batts or ceramic fiber blanket reinforced with wire mesh or equivalent spaced out one (1) inch (25.4 mm) on noncombustible spacers shall have three (3) inch (76.2 mm) clearance to combustible material. Exception No. 3: Reduced clearance to limited-combustible materials to zero clearance where protected by metal lath and plaster, ceramic tile, quarry tile, other noncombustible materials or assembly of noncombustible materials, or materials and products that are listed for the purpose of reducing clearance and are acceptable to the Authority Having Jurisdiction. The listed materials shall be installed in accordance with the conditions of the listing and the manufacturer's instructions and shall be acceptable to the Authority Having Jurisdiction Measures shall be taken to prevent physical damage to any material or product used for the purpose of reducing clearances. In the event of damage, the material or product shall be repaired and restored to meet its intended listing or clearance requirements and shall be acceptable to the Authority Having Jurisdiction. In the event of a fire within a kitchen exhaust system, the duct and its enclosure (rated shaft, factorybuilt grease duct enclosure, or field-applied grease duct enclosure) shall be inspected by qualified personnel to determine whether the duct and protection method are structurally sound, capable of maintaining their fire-protection function, and suitable for continued operation The protection methods for ducts to reduce clearance shall be applied to the combustible or limitedcombustible construction, not to the duct itself. Exception: Field-applied grease duct enclosures and factory-built grease duct enclosures Clearance Where enclosures are not required, hoods, grease removal devices, exhaust fans, and ducts shall have a clearance of at least 457 mm (18 in.) to combustible material, 76 mm (3 in.) to limited-combustible material, and 0 mm (0 in.) to noncombustible material. [NFPA 96:2008] Where a hood, duct, or grease removal device is listed for clearances less than those required in , the listing requirements shall be permitted. [NFPA 96:2008] Clearance Reduction Where a clearance reduction system consisting of 0.33 mm (0.013 in.) (28 gauge) sheet metal spaced out 25 mm (1 in.) on noncombustible spacers is provided, there shall be a minimum of 229 mm (9 in.) clearance to combustible material. [NFPA 96:2008] Where a clearance reduction system consisting of 0.69 mm (0.027 in.) (22 gauge) sheet metal on 25 mm (1 in.) mineral wool batts or ceramic fiber blanket reinforced with wire mesh or equivalent spaced out 25 mm (1 in.) on noncombustible spacers is provided, there shall be a minimum of 76 mm (3 in.) clearance to combustible material. [NFPA 96:2008] Zero clearance to limited-combustible materials shall be permitted where protected by metal lath and plaster, ceramic tile, quarry tile, other noncombustible materials or assembly of noncombustible materials, or materials and products that are listed for the purpose of reducing clearance. [NFPA 96:2008] Clearance Integrity In the event of damage, the material or product shall be repaired and restored to meet its intended listing or clearance requirements and shall be acceptable to the authority having jurisdiction. [NFPA 96:2008] In the event of a fire within a kitchen exhaust system, the duct and its enclosure (rated shaft, factory-built grease duct enclosure, or field-applied grease duct enclosure) shall be inspected by qualified personnel to determine whether the duct and protection method are structurally sound, capable of maintaining their fire protection function, and in compliance with this standard for continued operation. 47

52 [NFPA 96:2008] Protection shall be provided on the wall from the bottom of the hood to the floor, or to the top of the noncombustible material extending to the floor, to the same level as required in [NFPA 96:2008] The protection methods for ducts to reduce clearance shall be applied to the combustible or limited-combustible construction, not to the duct itself. [NFPA 96:2008] Updates the requirements for clearances and provides direct references to new extracted provisions in NFPA 96. Note that the paragraph numbers of the extracted material in NFPA are not final at the time of submitting this proposal, and the intent is that the NFPA 96 paragraph numbers be used in the 2009 UPC. (NFPA 96 is NOT attached) This proposal is not original material; its reference/source is as follows: NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations (2008 edition proposed) 48

53 Item #: 47 UMC ( ): Vickie Lovell Intercode Inc Delete and replace as follows: Except where enclosures are required, hoods, grease removal devices, exhaust fans, and ducts shall have a clearance of at least eighteen (18) inches (457.2 mm) to combustible material, three (3) inches (76.2 mm) to limited combustible material, and 0 inches (0 mm) to noncombustible material. Exception No. 1: Where the hood, duct, or grease removal device is listed for lesser clearances. Exception No. 2: Reduced clearance to combustible material if the combustible material is protected as follows: (a) inch (0.33 mm) (no. 28 gauge) sheet metal spaced out one (1) inch (25.4 mm) on noncombustible spacers shall have nine (9) inch (228.6 mm) clearance to combustible material. (b) inch (0.69 mm) (No. 22 gauge) sheet metal on one (1) inch (25.4 mm) mineral wool batts or ceramic fiber blanket reinforced with wire mesh or equivalent spaced out one (1) inch (25.4 mm) on noncombustible spacers shall have three (3) inch (76.2 mm) clearance to combustible material. Exception No. 3: Reduced clearance to limited-combustible materials to zero clearance where protected by metal lath and plaster, ceramic tile, quarry tile, other noncombustible materials or assembly of noncombustible materials, or materials and products that are listed for the purpose of reducing clearance and are acceptable to the Authority Having Jurisdiction. The listed materials shall be installed in accordance with the conditions of the listing and the manufacturer's instructions and shall be acceptable to the Authority Having Jurisdiction Measures shall be taken to prevent physical damage to any material or product used for the purpose of reducing clearances. In the event of damage, the material or product shall be repaired and restored to meet its intended listing or clearance requirements and shall be acceptable to the Authority Having Jurisdiction. In the event of a fire within a kitchen exhaust system, the duct and its enclosure (rated shaft, factorybuilt grease duct enclosure, or field-applied grease duct enclosure) shall be inspected by qualified personnel to determine whether the duct and protection method are structurally sound, capable of maintaining their fire-protection function, and suitable for continued operation The protection methods for ducts to reduce clearance shall be applied to the combustible or limitedcombustible construction, not to the duct itself. Exception: Field-applied grease duct enclosures and factory-built grease duct enclosures Field-Applied and Factory Built Grease Duct Enclosures. Field-applied grease duct enclosures and factory-built grease duct enclosures shall listed in accordance with UL 2221, Standard for Tests of Fire Resistive Grease Duct Enclosure Assemblies, or equivalent standard and installed in accordance with the manufacturer s instructions and the listing requirements. [NFPA 96: 4.3.1] Field-applied grease duct enclosures and factory-built grease duct enclosures shall demonstrate that they provide sufficient mechanical and structural integrity, resiliency, and stability when subjected to expected building environmental conditions, duct movement under general operating conditions, and duct movement due to fire conditions. [NFPA 96: 4.3.2] Measures shall be taken to prevent physical damage to any material or product used for the purpose of reducing clearances. Exception: When the duct is protected with a field-applied grease duct enclosure or factory-built grease duct enclosure The specifications of material, gauge, and construction of the duct used in the testing and listing of field-applied grease duct enclosures and factory-built grease duct enclosures shall be included as minimum requirements in their listing and installation documentation. [NFPA 96: 4.3.3] The following clearance options for which field-applied grease duct enclosures and factory-built grease duct enclosures have been successfully evaluated shall be clearly identified in their listing and installation documentation and on their label [NFPA 96: 4.3.4]: (1) Open combustible clearance at manufacturer s requested dimensions. [NFPA 96: 4.3.4(1)] (2) Closed combustible clearance at manufacturer s requested dimensions, with or without specified ventilation. [NFPA 96: 4.3.4(2)] (3) Rated shaft clearance at manufacturer s requested dimensions, with or without specified ventilation. [NFPA 96: 4.3.4(3)] A duct shall be permitted to contact noncombustible floors, interior walls, and other noncombustible structures or supports, but it shall not be in contact for more than 50 percent of its surface area per each lineal foot of contact length. Where such direct contact is made, the duct shall be protected from corrosion due to this contact. Exception: When the duct is protected with a material or product listed for the purpose of reducing clearance to zero Clearances between the duct and interior surfaces of enclosures shall meet the requirements of 49

54 Section Clearance Grease duct systems and exhaust equipment serving a Type I hood are required to maintain clearances as follows: (1.) Field fabricated grease ducts shall have a clearance to combustible construction of not less than 18 inches (457 mm), and shall have a clearance to noncombustible construction and gypsum wallboard attached to noncombustible structures of not less than 3 inches (76 mm). (2.) Factory built commercial kitchen grease ducts listed and labeled in accordance with UL 1978 and shall maintain the clearances in accordance with their listing. (3.) Fire-resistance-rated factory built grease ducts listed and labeled in accordance with UL 2221 and shall maintain the in accordance with their listing Field-Applied and Factory Built Grease Duct Enclosures A grease duct serving a Type I hood that penetrates a ceiling, wall or floor assembly shall be enclosed from the point of penetration to the outlet terminal. A duct enclosure shall not be required for a grease duct that penetrates only a nonfire resistance-rated roof/ceiling assembly.. The duct enclosure shall serve a single grease exhaust duct system and shall not contain any other ducts, piping, wiring or systems. Grease ducts shall be protected by any of the following methods and materials: (1.) Field fabricated grease ducts are permitted to be enclosed by a fire resistance rated shaft. The duct enclosure shall be sealed around the duct at the point of penetration of a ceiling, wall or floor, and the enclosure shall be vented to the outside of the building through the use of weather-protected openings. Clearance from the duct to the interior surface of enclosures of combustible construction shall be not less than 18 inches (457 mm). Clearance from the duct to the interior surface of enclosures of noncombustible construction or gypsum wall board attached to noncombustible structures shall be not less than 6 inches (152 mm). The shaft enclosure provisions of this section are not required where surfaces of the duct are continuously covered on all sides with a grease duct protection system. Such grease duct protection systems shall extend from the point at which the duct penetrates the ceiling, wall or floor to the outlet terminal and shall consist of a listed and labeled material, system or method of construction specifically evaluated for such purposes in accordance with ASTM E Duct penetrations shall be protected with a through-penetration firestop system tested in accordance with ASTM E 814. The F and T rating shall be at least equal to the fire resistance rating of the assembly being penetrated. Such materials, systems or methods of construction shall be installed in accordance with the listing and manufacturer s installation instructions. Exposed duct wrap systems shall be protected where subjected to physical damage. (2.) Factory-built commercial kitchen grease ducts listed and labeled in accordance with UL 1978 shall be protected with a fire resistance rated shaft enclosure. The duct enclosure shall be sealed around the duct at the point of penetration of a ceiling, wall or floor, and the enclosure shall be vented to the outside of the building through the use of weather-protected openings. The clearances shall be in accordance with their listing. (3.) Fire-resistance-rated factory built grease ducts listed and labeled in accordance with UL 2221 shall be installed accordance with the listing and manufacturer s installation instructions. Duct penetrations shall be protected with a through-penetration firestop system tested in accordance with ASTM E 814. The F and T rating shall be at least equal to the fire resistance rating of the assembly being penetrated. TABLE 17 1 Standard Number Standard Title [UMC References] ASTM Standard Test Method for Fire-Resisting Grease Duct Enclosure Systems There have been many important technical updates on the testing and field installation of grease ducts and grease duct enclosures, including a new test method, the various types of ducts and duct construction. Attempting to insert this information into the existing text was difficult and so a replacement of the existing text, although not entirely incorrect seemed appropriate. This language reflects the most current state of the art. 50

55 Item #: 48 UMC ( , ): Theodore C. Lemoff NFPA International Delete and replace as follows: Field-Applied and Factory Built Grease Duct Enclosures. Field-applied grease duct enclosures and factory-built grease duct enclosures shall listed in accordance with UL 2221, Standard for Tests of Fire Resistive Grease Duct Enclosure Assemblies, or equivalent standard and installed in accordance with the manufacturer s instructions and the listing requirements. [NFPA 96: 4.3.1] Factory-built grease duct enclosures shall be protected with a through-penetration firestop system classified in accordance with ASTM E814 having an "F" and "T" rating equal to the fire resistance rating of the assembly being penetrated from the point at which the duct penetrates a ceiling, wall or floor to the outlet terminal, and the factory-built grease duct protection system shall be listed in accordance with UL 2221, Standard for Tests of Fire Resistive Grease Duct Enclosure Assemblies and installed in accordance with the manufacturer's instructions and the listing requirements. [NFPA 96:2008] Add new text as follows: Field applied grease duct enclosures shall be protected with a through penetration firestop system classified in accordance with ASTM E814 having an "F" and "T" rating equal to the fire resistance rating of the assembly being penetrated. The surface of the field fabricated grease duct shall be continuously covered on all sides from the point at which the duct enclosure penetrates a ceiling, wall or floor to the outlet terminal, and listed in accordance with ASTM E 2336 Standard Test Methods for Fire resistive Grease Duct Enclosure Systems, and installed in accordance with the manufacturer's instructions and the listing requirements. [NFPA 96:2008] Renumber current and subsequent paragraph accordingly (NFPA 96 is NOT attached) This proposal seeks to further clarify the application of UL 2221 and ASTM E2336 related to the test methods for testing grease duct enclosure protection materials and systems. This proposal makes the application of the UL 2221, Standard for Tests of Fire Resistive Grease Duct Enclosure Assemblies, and ASTM E 2336 Standard Test Methods for Fire Resistive Grease Duct Enclosure Systems consistent with recent changes adopted in the International Mechanical Code. As indicated by the proposal, these changes make UL 2221 applicable to factorybuilt grease duct enclosures, and ASTM E2336 applicable to field-applied grease duct enclosure systems. This proposal is also consistent with the manner in which these two Standards are employed by the affected industries. In addition, the requirement to fire stop around the exterior of the grease duct enclosure is also added for consistency with the model Codes. (NFPA 96 is NOT attached) This proposal is not original material; its reference/source is as follows: NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations 51

56 Item #: 49 UMC ( , (New), and Table 17 1): Tony Crimi A.C. Consulting Solutions Inc./Rep. International Firestop Council 1. Revise text as follows: Field-Applied and Factory Built Grease Duct Enclosures. Field-applied grease duct enclosures and ffactory-built grease duct enclosures shall be protected with a through-penetration firestop system classified in accordance with ASTM E814 having an F and T rating equal to the fire resistance rating of the assembly being penetrated from the point at which the duct penetrates a ceiling, wall or floor to the outlet terminal, and the factory-built great duct protection system shall be listed in accordance with UL 2221, Standard for Tests of Fire Resistive Grease Duct Enclosure Assemblies, or equivalent standard and installed in accordance with the manufacturer s instructions and the listing requirements. [NFPA 96: 4.3.1] 2. Add new section as follows: Field applied grease duct enclosures shall be protected with a through- firestop system classified in accordance with ASTM E814 having an F and T rating equal to the fire resistance rating of the assembly being penetrated. The surface of the grease duct shall be continuously covered on all sides from the point at which the duct enclosure penetrates a ceiling, wall, or floor to the outlet terminal, and the grease duct protection systems shall be listed in accordance with ASTM E2335, Standard Test Methods for Fire Resistive Grease Duct Enclosure Systems, and installed in accordance with the manufacturers instructions and the listing requirements. (Renumber existing sections.) 3. Add reference to Chapter 17 as follows: ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA Add new standard to Table 17 1 as follows: ASTM E Standard Test Methods for Fire Resistive Grease Duct Enclosure Systems Problem: The 2006 UMC needs to be updated to reflect the most current applicable standards for evaluating field applied and factory built grease duct enclosure systems. Primarily, reference needs to be added to the ASTM E2336 standard on fire resistive grease ducts to reflect industry and construction practices. Substantiation: During the previous cycle, the UMC was revised to reference UL 2221 as one of the test standards for evaluating grease duct protection enclosure systems. However, UL 2221 is only one of the standards used in the industry for evaluating these systems. This proposal seeks to introduce and clarify the application of UL 2221 and ASTM E2336 related to the test methods for testing grease duct enclosure protection materials and systems. This proposal make the application of the UL 2221, Standard for Tests of Fire Resistive Grease Duct Enclosure Assemblies, and ASTM E2336, Standard Test Methods for Fire Resistive Grease Duct Enclosure Systems consistent with recent changes adopted in NFPA 96 (including TIA ) and the International Mechanical Code. As indicated by the proposal, these changes make UL 2221 applicable to factorybuilt grease duct enclosures, and ASTM E2336 applicable to field applied grease duct enclosure systems. ASTM Committee E5 approved ASTM E2336 in December 2003, and the final version was published in May The industry participated and supports the current edition of ASTM E2336. ASTM E2336 is based on and technically equivalent to the ICBO-ES AC101, which has effectively served as the basis for testing and acceptance by jurisdictions since it was first published in Numerous design listings and labeled materials exist in the marketplace today, which have been evaluated based on the provisions of both ASTM E2336 and UL This proposal is also consistent with the manner in which these two standards are employed by the affected industries. In addition, the requirement to firestop around the exterior of the grease duct enclosure is also added for consistency with the other model codes. Reference to ASTM E , Standard Test Methods for Fire Resistive Grease Duct Enclosure Systems, will also need to be added to Chapter

57 Item #: 50 UMC ( ): Theodore C. Lemoff NFPA International Delete and replace as follows: A duct shall be permitted to contact noncombustible floors, interior walls, and other noncombustible structures or supports, but it shall not be in contact for more than 50 percent of its surface area per each lineal foot of contact length. Where such direct contact is made, the duct shall be protected from corrosion due to this contact. Exception: When the duct is protected with a material or product listed for the purpose of reducing clearance to zero A duct shall be permitted to contact noncombustible floors, interior walls, and other noncombustible structures or supports, but it shall not be in contact for more than 50 percent of its surface area per each lineal foot of contact length. [NFPA 96:2008] Where duct contact must exceed the requirements of , the duct shall be protected from corrosion. [NFPA 96:2008] Where the duct is listed for zero clearance to combustibles or otherwise protected with a material or product listed for the purpose of reducing clearance to zero, the duct shall be permitted to exceed the contact limits of without additional corrosion protection. [NFPA 96:2008] 1. Identification of extracted material. 2. Proposed clarification for factory-built systems. Present text lacks clarity and implies that a separate material or product is applied to provide the necessary additional protection. Proposed additional words provide clarity of listed factory-built grease duct option whereby the duct incorporates its own, inherent protection for safely permitting zero clearance to combustibles. (NFPA 96; Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations, 2008 is not attached) This proposal is not original material; its reference/source is as follows: NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations 53

58 Item #: 51 UMC ( (New) ): Theodore C. Lemoff NFPA International Add new text as follows: Wall mounted exhaust hood assemblies shall be tight fitting against the back wall as to not permit passage of grease vapor behind the hood, or between the back wall and the hood assembly. [NFPA 96:2008] Gaps between the hood and back wall allow entry of grease vapor. Deposition of grease in these areas is a fire safety concern due to bypass of fire detection and extinguishing equipment. This proposal is not original material; its reference/source is as follows: NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations (2008 edition proposed) 54

59 Item #: 52 UMC (508.2 ): Theodore C. Lemoff NFPA International Delete and replace as follows: All seams, joints, and penetrations of the hood enclosure that direct and capture grease-laden vapors and exhaust gases shall have a liquidtight continuous external weld to the hood s lower outermost perimeter. Internal hood joints, seams, filter support frames, and appendages attached inside the hood need not be welded but shall be sealed or otherwise made greasetight. Exception No. 1: Penetrations shall be permitted to be sealed by devices that are listed for such use and whose presence does not detract from the hood's or duct's structural integrity. Exception No. 2: Eyebrow-type hoods over gas or electric ovens shall be permitted to have a duct constructed as in Section from the oven flue(s) connected to the hood canopy upstream of the exhaust plenum as shown in Figure 5 1. The duct shall be connected to the hood with a continuous weld or have a duct-to-duct connection as shown in Figure 5 6(b) through (d). Exception No. 3: Seams, joints, and penetrations of the hood shall be permitted to be internally welded, provided that the weld is formed smooth or ground smooth, so as to not trap grease, and is readily cleanable. Exception No. 4: Listed exhaust hoods with or without exhaust dampers All seams, joints, and penetrations of the hood enclosure that direct and capture grease-laden vapors and exhaust gases shall have a liquidtight continuous external weld to the hood s lower outermost perimeter. [NFPA 96:2008] Seams, joints, and penetrations of the hood shall be permitted to be internally welded, provided that the weld is formed smooth or ground smooth, so as to not trap grease, and is cleanable. [NFPA 96:2008] Internal hood joints, seams, filter support frames, and appurtenances attached inside the hood shall be sealed or otherwise made greasetight. [NFPA 96:2008] Penetrations shall be permitted to be sealed by devices that are listed for such use and whose presence does not detract from the hood s or duct s structural integrity. [NFPA 96:2008] Listed exhaust hoods with or without exhaust dampers shall be permitted to be constructed of materials required by the listing. [NFPA 96:2008] Listed exhaust hoods with or without exhaust dampers shall be permitted to be assembled in accordance with the listing requirements. [NFPA 96:2008] Eyebrow-type hoods over gas or electric ovens shall be permitted to have a duct constructed as required in Chapter 7 from the oven flue(s) connected to the hood canopy upstream of the exhaust plenum as shown in 5 1. [NFPA 96:2008] FIGURE 5 1 Typical Section of Eyebrow-Type Hood. [NFPA 96:2008] (See attached figure 5 1 Typical Section of Eyebrow-Type Hood on page 55 1) The duct connecting the oven flue(s) to the hood canopy shall be connected with a continuous weld or have a duct-to-duct connection. [See Figure 5 6(a) through Figure 5 6(d)] [NFPA 96:2008] Insulation materials other than electrical insulation shall have a flame spread rating of 25 or less when tested in accordance with UL 723. [NFPA 96:2008] Adhesives or cements used in the installation of insulating materials shall comply with the requirements of , when tested with the specific insulating material. [NFPA 96:2008] Penetrations shall be sealed with listed devices in accordance with the requirements of [NFPA 96:2008] Devices that require penetration of the hood, such as pipe and conduit penetration fittings and fasteners, shall be listed in accordance with UL [NFPA 96:2008] Updates provisions and identifies the extracted material from NFPA 96. This proposal is not original material; its reference/source is as follows: NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations 55

60 55-1

61 Item #: 53 UMC (508.5 ): Theodore C. Lemoff NFPA International Delete and replace as follows: Exhaust Hood Assemblies with Integrated Supply-Air Plenums. The construction and size of these hoods shall comply with the requirements of Sections and The construction of the outer shell or the inner exhaust shell shall comply with Section If the outer shell is welded, the inner shell shall be of greasetight construction A fire-actuated damper shall be installed in the supply air plenum at each point where a supply air duct inlet or a supply air outlet penetrates the continuously welded shell of the assembly. The damper shall be listed for such use or be part of a listed exhaust hood with or without exhaust damper. The actuation device shall have a maximum temperature rating of 286 F (141 C). Supply-air plenums that discharge air from the face rather than from the bottom or into the exhaust hood and that are isolated from the exhaust hood by the continuously welded shell extending to the lower outermost perimeter of the entire hood assembly shall not require a fire-actuated damper The construction and size of exhaust hood assemblies with integrated supply air plenums shall comply with the requirements of Sections and [NFPA 96:2008] The construction of the outer shell or the inner exhaust shell shall comply with Section [NFPA 96:2008] Where the outer shell is welded, the inner shell shall be of greasetight construction. [NFPA 96:2008] Fire Dampers A fire-actuated damper shall be installed in the supply air plenum at each point where a supply air duct inlet or a supply air outlet penetrates the continuously welded shell of the assembly. [NFPA 96:2008] The fire damper shall be listed for such use or be part of a listed exhaust hood with or without exhaust damper. [NFPA 96:2008] The actuation device shall have a maximum temperature rating of 141 C (286 F). [NFPA 96:2008] Supply air plenums that discharge air from the face rather than from the bottom or into the exhaust hood and that are isolated from the exhaust hood by the continuously welded shell extending to the lower outermost perimeter of the entire hood assembly shall not require a fire-actuated damper. [NFPA 96:2008] Updates provisions and identifies the extracted material from NFPA 96. (NFPA 96 is NOT attached) This proposal is not original material; its reference/source is as follows: NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations (2008 edition proposed) 56

62 Item #: 54 UMC (508.6 ): Theodore C. Lemoff NFPA International Revise text as follows: Listed Hood Assemblies. Listed hood assemblies shall be installed in accordance with the terms of their listing and the manufacturer s instructions UL710 or equivalent. UL710 or its equivalent should be referenced for listing hoods, as this is the UL test standard for hood approvals. This proposal is not original material; its reference/source is as follows: NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations (2008 edition proposed) 57

63 Item #: 55 UMC (508.7 (New) ): Theodore C. Lemoff NFPA International Add new text as follows: Listed Ventilated Ceiling technology shall be installed and maintained in accordance with the terms of their listing and the manufacturer's instructions. [NFPA 96: 2008] (Renumber remainder of section) By putting the ventilation technology in the ceiling it removes a serious source of fire (the hood and all the areas within the hood and filters that can collect grease). This is listed and tested product that has been found acceptable for use in commercial kitchen ventilation. This proposal is not original material; its reference/source is as follows: NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations 58

64 Item #: 56 UMC (508.8 (New) ): Theodore C. Lemoff NFPA International Add text as follows: Listed Ultra-violet Hoods shall be installed and maintained in accordance with the terms of their listing and the manufacturer's instructions. [NFPA 96: 2008] (Renumber remainder of section) Ultra-violet technology is proven to remove large volumes of both odor and grease from the environment in a controllable manner. This evolving technology will allow for a number of options to the kitchen designer and AHJ. This is a listed and tested process that has been established in Europe for a number of years. AHJ throughout North America are allowing the installation of this tested technology. This proposal is not original material; its reference/source is as follows: NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations (2008 proposed) 59

65 Item #: 57 UMC (TIA , 508.8): Bob Adler City of San Jose Add new text as follows: Exhaust Outlets. An exhaust outlet within an unlisted hood shall be located so as to optimize the capture of particulate matter. Each outlet shall serve not more than a twelve (12) foot (3658 mm) section of an unlisted hood. The opening paragraph of this section was unintentionally omitted from the 2003 edition and is a requirement in Section of the 2000 edition. This requirement may be required if the listing does not specify the location of the duct connection to the hood. In accordance with the rules and regulations, this is of an emergency nature because it was an omission that was overlooked during the regular revision process. The TC recognizes that they inadvertently neglected to provide guidance for location of the exhaust outlet when the prescriptive language for field built hoods was added back into the 2003 UMC. 60

66 Item #: 58 UMC (511.0 ): Theodore C. Lemoff NFPA International Revise text as follows: Air Movement Exhaust Fans for Commercial Cooking Equipment. Where solid-fuel cooking equipment is to be vented, the duct system shall comply with Section Approved upblast fans with motors surrounded by the airstream shall be hinged, supplied with flexible weatherproof electrical cable and service hold-open retainers, and listed for this use. (See Figure 5 5.) Installation shall conform to the requirements of Section In-Line Exhaust Fans In-line fans shall be of the type with the motor located outside the airstream and with belts and pulleys protected from the airstream by a greasetight housing. They shall be connected to the exhaust duct by flanges securely bolted as shown in Figure 5 6(a), or by a system specifically listed for such use. Flexible connectors shall not be used. [NFPA 96: ] If the design or positioning of the fan allows grease to be trapped, a drain directed to a readily accessible and visible grease receptacle, not exceeding one (1) gallon (3.8 L), shall be provided. In-line exhaust fans shall be located in an easily accessible area of adequate size to allow for service or removal. If the duct system connected to the fan is in an enclosure, the space or room in which the exhaust fan is located shall have the same fire resistance rating as the enclosure. [NFPA 96: ] Utility set exhaust fans, if installed at the rooftop termination point, shall meet the requirements of Section (A) through Section If the fan is installed within the building, it shall be located in an easily accessible area of adequate size to allow for service or removal. If the duct system connected to the fan is in an enclosure, the space or room in which the exhaust fan is located shall have the same fire resistance rating as the enclosure. The fan shall be connected to the exhaust duct by flanges securely bolted as shown in Figures 5 6(a) through 5 6(d) or by a system specifically listed for such use. Flexible connectors shall not be used. Exhaust fans shall have a drain directed to a readily accessible and visible grease receptacle not to exceed one (1) gallon (3.8 L). [NFPA 96: ] Exhaust fan housings shall be constructed of carbon steel not less than inch (1.37 mm) (No. 16 MSG) in thickness or stainless steel not less than inch (1.09 mm) (No. 18 MSG) in thickness or, if listed, constructed in accordance with the terms of the listing. [NFPA 96: 8.1.4] Openings for cleaning, servicing, and inspection shall conform to the requirements of Section Clearances shall conform to the requirements of Section 507.2, or if installed within an enclosure All wiring and electrical equipment shall comply with NFPA 70, National Electrical Code Airflow The air velocity through any duct shall be not more than 2,500 feet (457.2 m) per minute. [NFPA 96: ] Exception: Transition duct sections shall be permitted to be connected to hoods and exhaust fans that do not meet this velocity, provided that they do not exceed three (3) feet (0.92 m) in length and do not contain traps for grease Transition duct sections that do not exceed 1 m (3 ft) in length and do not contain grease traps shall be permitted to be connected to hoods and exhaust fans that do not meet this velocity. [NFPA 96: ] Exhaust-air volumes for hoods shall be of sufficient level to provide for capture and removal of grease-laden cooking vapors. Test data, performance acceptable to the Authority Having Jurisdiction, or both, shall be provided, displayed, or both, upon request. [NFPA 96: , ] Exception: Lower exhaust-air volumes shall be permitted during no-load cooking conditions, provided they are sufficient to capture and remove flue gases and residual vapors from cooking equipment A hood exhaust fan(s) shall continue to operate after the extinguishing system has been activated, unless fan shutdown is required by a listed component of the ventilation system or by the design of the extinguishing system. It shall not be required to restart the hood exhaust fan when the extinguishing system is activated if the exhaust fan and all cooking equipment served by the fan had previously been shut down. The hood exhaust fan shall not be required to start upon activation of the extinguishing system if the exhaust fan and all cooking equipment served by the fan have previously been shut down. [NFPA 96: 8.2.3] Replacement Air. Replacement air quantity shall be adequate to prevent negative pressures in the commercial cooking area(s) from exceeding 0.02 inch water column (4.98 kpa). [NFPA 96: 8.3.1] When its fire- 61

67 extinguishing system discharges, makeup air supplied internally to a hood shall be shut off. [NFPA 96: 8.3.2] Exceptions: (1) When its fire-extinguishing system discharges, makeup air supplied internally to a hood shall be shut off. Compensating hoods shall meet the airflow requirements specified in Sections through Compensating hoods shall extract at least 20 percent of their required exhaust airflow from the kitchen area Common Duct (Manifold) Systems Master kitchen exhaust ducts that serve multiple tenants shall include provision to bleed air from outdoors or from adjacent spaces into the master exhaust duct where required to maintain the necessary minimum air velocity in the master exhaust duct. [NFPA 96: 8.4.1] This bleed-air duct ducts shall connect to the top or side of the master exhaust duct. [NFPA 96: 8.4.2] The bleed-air duct shall have a fire damper at least twelve (12) inches (304.8 mm) from the exhaust duct connection. [NFPA 96: 8.4.3] The bleed-air duct shall have the same construction and clearance requirements as the main exhaust duct from the connection to the exhaust duct to at least twelve (12) inches (304.8 mm) on both sides of the fire damper. [NFPA 96: 8.4.4] Each bleed air duct shall have a means of adjusting (e.g., using volume dampers) the bleed-air quantity. [NFPA 96: 8.4.5] Such means to adjust the bleed air quantity shall be installed in between the fire damper and the source of bleed air. [NFPA 96: 8.4.6] A bleed air duct shall not be used for the exhaust of grease-laden vapors and shall be so labeled. [NFPA 96: 8.4.7] Unused tenant exhaust connections to the master exhaust duct that are not used as bleed air connections shall be disconnected and sealed at the main duct. [NFPA 96: 8.4.8] Solid-Fuel Air Movement Requirements. Where solid-fuel cooking equipment is used, exhaust and replacement air also shall comply with Section Paragraphs in Section 511 that are extracted from NFPA 96 are identified. 2. Paragraph is revised by deleting easily which is neither defined nor enforceable. The exception to is replaced with revised text from the 2004 edition of NFPA The second sentence of is replaced with revised text from NFPA Exception 1 to is replaced with a new containing revised text from NFPA 96 These revisions intent to upgrade the requirements of section 511of the UMC, which is draws from on NFPA 96. Recent additions to NFPA 96, including flanged joints and connecting ducts are added to the UMC. This proposal is not original material; its reference/source is as follows: NFPA 96, Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations (2004 editions) 62

68 Item #: 59 UMC (512.0 ): Theodore C. Lemoff NFPA International Revise text as follows: Auxiliary Equipment Dampers. Dampers shall not be installed in exhaust ducts or exhaust duct systems. [NFPA 96: 9.1.1] Exception: Where specifically listed for such use or where required as part of a listed or approved device or system, dampers in exhaust ducts or exhaust duct systems shall be permitted. [NFPA 96: 9.1.2] Electrical Equipment Wiring systems of any type shall not be installed in ducts. [NFPA 96: 9.2.1] Only where specifically listed for such use shall motors, lights, and other electrical devices shall not be permitted to be installed in ducts or hoods or located in the path of travel of exhaust products. [NFPA 96: 9.1.2] Exception: Where specifically approved for such use Lighting units in hoods shall be listed for use over commercial cooking appliances and installed in accordance with the terms of their listing. [NFPA 96: 9.2.2] Lighting units on hoods shall not be located in concealed spaces. Exceptions: (1) Where part of a listed exhaust hood. (2) Where specifically listed for such use and installed in accordance with the terms of the listing Lighting units in hoods shall be listed for use over commercial cooking appliances and installed in accordance with the terms of their listing. [NFPA 96: ] Lighting units on hoods shall not be located in concealed spaces. [NFPA 96: ] Lighting units shall be permitted in concealed spaces where such units are part of a listed exhaust hood. [NFPA 96: ] Listed lighting units specifically listed for such use and installed in accordance with the terms of the listing shall be permitted to be installed in concealed spaces. [NFPA 96: ] All electrical equipment shall be installed in accordance with NFPA 70, National Electrical Code, with due regard to the effects of heat, vapor, and grease on the equipment Other Equipment Fume incinerators, thermal recovery units, air pollution control devices, or other devices shall be permitted to be installed in ducts or hoods or located in the path of travel of exhaust products where specifically approved for such use. Downgrading other parts of the exhaust system due to the installation of these approved devices, whether listed or not, shall not be allowed. [NFPA 96:.3.1, 9.3.2] Any equipment, listed or otherwise, that provides secondary filtration or air pollution control and that is installed in the path of travel of exhaust products shall be provided with an approved automatic fireextinguishing system for the protection of the component sections of the equipment and shall include protection of the ductwork downstream of the equipment, whether or not the equipment is provided with a damper. If the equipment can be a source of ignition, it shall be provided with appropriate detection to operate the fire-extinguishing system. [NFPA 96: 9.3.3, 9.3.4] Where a cooking exhaust system employs an air pollution control device that recirculates air into the building, the provisions of Section shall apply. [NFPA 96: 9.35] 63

69 512.4 Solid-Fuel Auxiliary Equipment. Where solid fuel cooking comprises any part of a cooking operation, additional provisions and equipment as described in Section shall be used where required. 1. Paragraphs in Section 512 that are extracted from NFPA 96 are identified. 2. Exceptions to , , and are deleted and replaced with paragraphs extracted from NFPA 96. These revisions intent to upgrade the requirements of section 512 of the UMC, which is draws from on NFPA 96. This proposal is not original material; its reference/source is as follows: NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations (2004) 64

70 Item #: 60 UMC (513.0 ): Theodore C. Lemoff NFPA International Revise text as follows: (See attached document on page 65 1 Through 65 3) 1. Paragraphs in Section 513 that are extracted from NFPA 96 are identified. 2. Exceptions to , , , , and are replaced with new text extracted from NFPA A new section is proposed for Installation Requirements, which are not part of 513.9, Review and Certification 4. Section is augmented with additional extracts from NFPA 96 to provide more complete coverage in the UMC. 5. New Section is added with coverage of Water Valve Supervision, to provide more complete coverage in the UMC. This proposal is not original material; its reference/source is as follows: NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations (2004) 65

71 513.0 Fire-Extinguishing Equipment General Requirements Fire-extinguishing equipment for the protection of grease removal devices, hood exhaust plenums, and exhaust duct systems shall be provided. [NFPA 96: ] Cooking equipment that produces grease-laden vapors (such as, but not limited to, deep-fat fryers, ranges, griddles, broilers, woks, tilting skillets, and braising pans) shall be protected by fire-extinguishing equipment. [NFPA 96: ] Types of Equipment Fire-extinguishing equipment shall include both automatic fire-extinguishing systems as primary protection and portable fire extinguishers as secondary backup. [NFPA 96:10.2.1] A placard identifying the use of the extinguisher as secondary backup means to the automatic fire suppression system shall be conspicuously placed near each portable fire extinguisher in the cooking area. [NFPA 96:10.2.2] Automatic fire-extinguishing systems shall comply with standard UL 300, Fire Testing of Fire Extinguishing Systems for Protection of Restaurant Cooking Areas, or other equivalent standards and shall be installed in accordance with their listings. [NFPA 96:10.2.3] Exception: Automatic fire-extinguishing equipment provided as part of listed recirculating systems complying with standard UL 197, Standard for Safety Commercial Electric Cooking Appliances. [NFPA 96:10.2.5] Automatic fire-extinguishing systems shall be installed in accordance with the terms of their listing, the manufacturer s instructions, and the following standards where applicable. [NFPA 96:10.2.6] (1) NFPA 12, Standard on Carbon Dioxide Extinguishing Systems (2) NFPA 13, Standard for the Installation of Sprinkler Systems (3) NFPA 17, Standard for Dry Chemical Extinguishing Systems (4) NFPA 17A, Standard for Wet Chemical Extinguishing Systems In existing systems, when changes in the cooking media, positioning, or replacement of cooking equipment occur, the fire-extinguishing system shall be made to comply with [NFPA ] Modification of Existing Hood Systems Any abandoned pipe or conduit from a previous installation shall be removed from within the hood, plenum, and exhaust duct. [NFPA ] Penetrations and holes resulting from the removal of conduit or piping shall be sealed with listed or equivalent liquid tight sealing devices. [NFPA ] The addition of obstructions to spray patterns from the cooking appliance nozzle(s) such as baffle plates, shelves, or any modification shall not be permitted. [NFPA ] Changes or modifications to the hazard after installation of the fire extinguishing systems shall result in reevaluation of the system design by a properly trained and qualified person(s) or company. [NFPA ] Fixed Baffle Hoods with Water Wash. Grease removal devices, hood exhaust plenums, and exhaust ducts requiring protection in accordance with Section shall be permitted to be protected by a listed fixed baffle hood containing a constant or fire-actuated water-wash system that is listed and in compliance with UL 300 or other equivalent standards and shall be installed in accordance with the requirements of their listing. [NFPA 96: ] The water for listed, fixed baffle hood assemblies shall be permitted to be supplied from the domestic water supply when the minimum water pressure and flow are provided in accordance with the terms of the listing. [NFPA 96: ] The water supply shall be monitored by an annunciated low water pressure switch controlled by a supervised water supply control valve. [NFPA 96: ] The water wash in the fixed baffle hood shall be activated by the cooking equipment extinguishing system. [NFPA 96: ] A water-wash system approved to be used for protection of the grease removal device(s), hood exhaust plenum(s), exhaust duct(s), or combination thereof shall include instruction and appropriate electrical interface for simultaneous activation of the water-wash system from an automatic fire-extinguishing system, where the automatic fire-extinguishing system is used for cooking equipment protection only. [NFAP 96: ] Where the fire-extinguishing system provides protection for the cooking equipment, hood, and duct, activation of the water wash shall not be required. [NFPA 96: ] 65-1

72 The water required for listed automatic fire-extinguishing systems shall be permitted to be supplied from the domestic water supply where the minimum water pressure and flow are provided in accordance with the terms of the listing. The water supply shall be controlled by a supervised water supply control valve. [NFPA 98: ] Water Valve Supervision. Valves controlling the water supply to listed fixed baffle hood assemblies, automatic fire-extinguishing systems, or both shall be listed indicating type of valve and shall be supervised open by one of the following methods: (1) Central station, proprietary, or remote station alarm service (2) Local alarm service that will cause the sounding of an audible signal at a constantly attended point (3) Locking valves open (4)* Sealing of valves and approved weekly recorded inspection [NFPA 96: ] Simultaneous Operation. Fixed-pipe extinguishing systems in a single hazard area shall be arranged for simultaneous automatic operation upon actuation of anyone of the systems. [NFPA 96: ] Exception No. 1: Where the fixed-pipe extinguishing system is an automatic sprinkler system. Exception No. 2: A dry or wet chemical system shall be permitted to be used to protect common exhaust ductwork by one of the methods specified in NFPA 17, Standard for Dry Chemical Extinguishing Systems, or NFPA 17A, Standard for Wet Chemical Extinguishing Systems, in lieu of simultaneous automatic operation Simultaneous operation shall not be required where the fixed pipe extinguishing system is an automatic sprinkler system. [NFPA 96: ] 5`3.3.2 Simultaneous operation shall not be required where dry or wet chemical system shall be permitted to be used to protect common exhaust ductwork by one of the methods specified in NFPA 17 or NFPA 17A. [NFPA 96: ] Fuel Shutoff Upon activation of any fire-extinguishing system for a cooking operation, all sources of fuel and electric power that produce heat to all equipment requiring protection by that system shall automatically shut off. [NFPA 96: ] Exception No. 1: Steam supplied from an external source. Exception No. 2: Solid-fuel cooking operations (New) Steam supplied from an external source shall not be required to automatically shut off. [NFPA 96: ] Any gas appliance not requiring protection, but located under the same ventilating equipment, shall also automatically shut off upon activation of any extinguishing system. [NFPA 96:10.4.3] Shutoff devices shall require manual reset. [NFPA 96:10.4.4] Manual Activation A readily accessible means for manual activation shall be located between forty-two (42) inches and sixty (60) forty eight inches (1,067 mm and 1, mm) above the floor, located in a path of exit or egress, and clearly identify the hazard protected. The automatic and manual means of system activation external to the control head or releasing device shall be separate and independent of each other so that failure of one will not impair the operation of the other. [NFPA 96: , ] Exceptions: (1) The manual means of system activation shall be permitted to be common with the automatic means if the manual activation device is located between the control head or releasing device and the first fusible link. (2) An automatic sprinkler system (New) The manual means of system activation shall be permitted to be common with the automatic means if the manual activation device is located between the control head or releasing device and the first fusible link. [NFPA 96: ] (New) An automatic sprinkler system shall not require a manual means of system activation. [NFPA 96: ] The means for manual actuator(s) shall be mechanical and shall not rely on electrical power for actuation. [NFPA 96: ] Exception: Electrical power shall be permitted to be used for manual activation if a standby power supply is provided or if supervision is provided as per Electrical power shall be permitted to be used for manual activation if a standby power supply is provided or if supervision is provided in accordance with Section [NFPA 96: ] 65-2

73 513.6 System Annunciation Upon activation of an automatic fire extinguishing system, an audible alarm or visual indicator shall be provided to show that the system has activated. [NPFA 96: ] Where a fire alarm signaling system is serving the occupancy where the extinguishing system is located, the activation of the automatic fire-extinguishing system shall activate the fire alarm signaling system. [NPFA 96: ] System Supervision Where electrical power is required to operate the automatic fire-extinguishing system, it shall be monitored by a supervisory alarm, with a standby power supply provided. [NFPA 96: ] Exceptions: (1) Where automatic fire-extinguishing systems include automatic mechanical detection and actuation as a backup detection system. (2) Where fire-extinguishing systems are interconnected or interlocked with the cooking equipment power sources so that if the fire-extinguishing system becomes inoperable due to power failure, all sources of fuel or electric power that produce heat to all cooking equipment serviced by that hood shall automatically shut off System supervision shall not be required where an automatic fire-extinguishing system(s) includes automatic mechanical detection and actuation as a backup detection system. [NFPA 96: ] System supervision shall not be required where a fire-extinguishing system(s) is interconnected or interlocked with the cooking equipment power source(s) so that if the fire-extinguishing system becomes inoperable due to power failure, all sources of fuel or electric power that produce heat to all cooking equipment serviced by that hood shall automatically shut off. [NFPA 96: ] System supervision shall not be required where an automatic fire-extinguishing system, including automatic mechanical detection and actuation, is electrically connected to a listed fire-actuated water-wash system for simultaneous operation of both systems. [NFPA 96: ] Special Design and Application Hoods containing automatic fire extinguishing systems are protected areas; therefore, these hoods are not considered obstructions to overhead sprinkler systems and shall not require floor coverage underneath. [NFPA 96: ] A single listed detection device shall be permitted for more than one appliance when installed in accordance with the terms of the listing. [NFPA 96: ] Review and Certification Where required, complete drawings of the system installation, including the hood(s), exhaust duct(s), and appliances, along with the interface of the fire-extinguishing system detectors, piping, nozzles, fuel shutoff devices, agent storage container(s), and manual actuation device(s), shall be provided submitted to the Authority Having Jurisdiction. [NFPA 96: ] (New) Installation Requirements Installation of systems shall be performed only by persons properly trained and qualified to install the specific system being provided. The installer shall provide certification that the installation is in agreement with the terms of the listing and the manufacturer's instructions and/or approved design. [NFPA 96: ] Portable Fire Extinguishers Portable fire extinguishers shall be installed in kitchen cooking areas in accordance with NFPA 10, Standard for Portable Fire Extinguishers. Such extinguishers shall use agents that saponify upon contact with hot grease, such as sodium bicarbonate and potassium bicarbonate dry chemical and potassium carbonate solutions. Class B gas-type portables such as CO2 and halon shall not be permitted in kitchen cooking areas. Manufacturer's recommendations shall be followed. [NFPA 96: ] Portable fire extinguishers listed specifically for use in the kitchen cooking areas shall also be permitted Other fire extinguishers in the kitchen area shall be installed in accordance with NFPA 10, Standard for Portable Fire Extinguishers. [NFPA 96: ] Solid-Fuel Fire-Extinguishing Equipment. Where solid-fuel cooking equipment is served by fire extinguishing equipment, the provisions of Section shall apply. 65-3

74 Item #: 61 UMC (514.0 ): Theodore C. Lemoff NFPA International Revise text as follows: Procedures for the Use and Maintenance of Equipment Operating Procedures Exhaust systems shall be operated whenever cooking equipment is turned on. [NFPA 96: ] Filter-equipped exhaust systems shall not be operated with filters removed. [NFPA 96: ] Openings provided for replacing air exhausted through ventilating equipment shall not be restricted by covers, dampers, or any other means that would reduce the operating efficiency of the exhaust system. [NFPA 96: ] Instructions for manually operating the fire-extinguishing system shall be posted conspicuously in the kitchen and shall be reviewed periodically with employees by the management. [NFPA 96: ] Listed exhaust hoods shall be operated in accordance with the terms of their listings and the manufacturer's instructions. [NFPA 96: ] Cooking equipment shall not be operated while its fire-extinguishing system or exhaust system is nonoperational or otherwise impaired. [NFPA 96: ] Secondary filtration and pollution control equipment shall be operated in accordance with the terms of their listing and the manufacturer's recommendations. [NFPA 96: ] Inspection and maintenance of equipment allowed in Section shall be conducted by properly trained and qualified persons at a frequency determined by the manufacturer's instructions or equipment listing. [NFPA 96: ] Inspection. Maintenance of the fire-extinguishing system and listed exhaust hoods containing a constant or fire-actuated water system that is listed to extinguish a fire in the grease removal devices, hood exhaust plenums, and exhaust ducts shall be made by properly trained, qualified, and certified person(s) or company acceptable to the Authority Having Jurisdiction at least every six (6) months. [NFPA ] All actuation components, including remote manual pull stations, mechanical or electrical devices, detectors, actuators, and fire-actuated dampers, shall be checked for proper operation during the inspection in accordance with the manufacturer's listed procedures. In addition to these requirements, the specific inspection requirements of the applicable NFPA standard shall also be followed. [NFPA 96: &11.2.3] Fusible links (including fusible links on fire damper assemblies) and automatic sprinkler heads shall be replaced at least semiannually, or more frequently if necessary where required by the manufacturer. [NFPA 96: ] The year of manufacture and the date of installation of the fusible links shall be marked on the system inspection tag. The tag shall be signed or initialed by the installer. [NFPA 96: ] Other detection devices not including fusible links and automatic sprinklers shall be serviced or replaced in accordance with the manufacturer s recommendations. [NFPA 96: ] Where automatic bulb-type sprinklers or spray nozzles are used and annual examination shows no buildup of grease or other material on the sprinkler or spray nozzles, annual replacement shall not be required. [NFPA 96: ] If required, certificates of inspection and maintenance shall be provided forwarded to the Authority Having Jurisdiction. [NFPA 96: ] If required, certificates of inspection and maintenance shall be provided Cleaning Hoods, grease removal devices, fans, ducts, and other appurtenances shall be cleaned to bare metal or the original factory coating at frequent intervals prior to surfaces becoming heavily contaminated with grease or oily sludge. After the exhaust system is cleaned, it shall not be coated with powder or other substance. The entire exhaust system shall be inspected by a properly trained, qualified, and certified company or person(s) in accordance with Table Upon inspection, if found to be contaminated with deposits from grease laden vapors, the contaminated portions of the exhaust system shall be cleaned by a properly trained, qualified, and certified company or person(s) acceptable to the Authority Having Jurisdiction in accordance with Section [NFPA 96: ] When a vent-cleaning service is used, a certificate showing date of inspection or cleaning shall be maintained on the premises. After cleaning is completed, the vent-cleaning contractor shall place or display within the kitchen area a label indicating the date cleaned and the name of the servicing company. It shall also indicate areas not cleaned Flammable solvents or other flammable cleaning aids shall not be used At the start of the cleaning process, electrical switches that could be activated accidentally shall be locked out Components of the fire suppression system shall not be rendered inoperable during the cleaning 66

75 process. Exception: Servicing by properly trained and qualified persons in accordance with Section Care shall be taken not to apply cleaning chemicals on fusible links or other detection devices of the automatic extinguishing system When cleaning procedures are completed, all electrical switches and system components shall be returned to an operable state. All access panels (doors) and cover plates shall be replaced. Dampers and diffusers shall be positioned for proper airflow Inspection for Grease Buildup The entire exhaust system shall be inspected for grease buildup by a properly trained, qualified, and certified company or person(s) acceptable to the Authority Having Jurisdiction in accordance with Table 5 4 TABLE 5 4 Exhaust System Inspection Schedule [NFPA 96:Table 1.3] (Portions of table not shown do not change) Hoods, grease removal devices, fans, ducts, and other appurtenances shall be cleaned to remove combustible contaminants prior to surfaces becoming heavily contaminated with grease or oily sludge. [NFPA 96: ] At the start of the cleaning process, electrical switches that could be activated accidentally shall be locked out. [NFPA 96: ] Components of the fire suppression system shall not be rendered inoperable during the cleaning process. [NFPA 96: ] Fire-extinguishing systems shall be permitted to be rendered inoperable during the cleaning process where serviced by properly trained and qualified persons. [NFPA 96: ] Flammable solvents or other flammable cleaning aids shall not be used. [NFPA 96: ] Cleaning chemicals shall not be applied on fusible links or other detection devices of the automatic extinguishing system. [NFPA 96: ] After the exhaust system is cleaned, it shall not be coated with powder or other substance. [NFPA 96: ] When cleaning procedures are completed, all access panels (doors) and cover plates shall be restored to their normal operational condition. [NFPA 96: ] Dampers and diffusers shall be positioned for proper airflow When cleaning procedures are completed, all electrical switches and system components shall be returned to an operable state. [NFPA 96: ] When a vent cleaning service is used, a certificate showing date of inspection or cleaning shall be maintained on the premises. [NFPA 96: ] After cleaning is completed, the vent cleaning contractor shall place or display within the kitchen area a label indicating the date cleaned, the name of the servicing company, and areas not cleaned. [NFPA 96: ] Where required, certificates of inspection and cleaning shall be submitted to the authority having jurisdiction. [NFPA 96: ] Operation, Maintenance, and Inspection of Solid-Fuel Cooking Equipment. Cleaning of Exhaust Systems. Where solid-fuel cooking equipment is used, the special provisions of Section shall apply Upon inspection, if found to be contaminated with deposits from grease-laden vapors, the contaminated portions of the exhaust system shall be cleaned by a properly trained, qualified, and certified company or person(s) acceptable to the authority having jurisdiction. [NFPA 96: ] Hoods, grease removal devices, fans, ducts, and other appurtenances shall be cleaned to remove combustible contaminants prior to surfaces becoming heavily contaminated with grease or oily sludge. [NFPA 96: ] At the start of the cleaning process, electrical switches that could be activated accidentally shall be locked out. [NFPA 96: ] Components of the fire suppression system shall not be rendered inoperable during the cleaning process. [NFPA 96: ] Fire-extinguishing systems shall be permitted to be rendered inoperable during the cleaning process where serviced by properly trained and qualified persons. [NFPA 96: ] Flammable solvents or other flammable cleaning aids shall not be used. [NFPA 96: ] Cleaning chemicals shall not be applied on fusible links or other detection devices of the automatic extinguishing system. [NFPA 96: ] After the exhaust system is cleaned, it shall not be coated with powder or other substance. [NFPA 96: ] When cleaning procedures are completed, all access panels (doors) and cover plates shall be restored to their normal operational condition. [NFPA 96: ] Dampers and diffusers shall be positioned for proper airflow. [NFPA 96: ] When cleaning procedures are completed, all electrical switches and system components shall be returned to an operable state. [NFPA 96: ] When a vent cleaning service is used, a certificate showing date of inspection or cleaning shall be maintained on the premises. [NFPA 96: ] After cleaning is completed, the vent cleaning contractor shall place or display within the kitchen 67

76 area a label indicating the date cleaned, the name of the servicing company, and areas not cleaned. [NFPA 96: ] Where required, certificates of inspection and cleaning shall be submitted to the authority having jurisdiction. [NFPA 96: ] 1. Paragraphs in Section 514 that are extracted from NFPA 96 are identified. 2. Section is renamed Inspection for Grease Buildup, and made consistent with NFPA Section 514.4, Operations, Maintenance, and Inspection of solid Fuel Cooking Equipment, is renamed Cleaning of Exhaust Systems, and text from NFPA 96 is added. This proposal is not original material; its reference/source is as follows: NFPA 54, National Fuel Gas Code ( proposed) 68

77 Item #: 62 UMC (515.0 ): Theodore C. Lemoff NFPA International Revise text as follows: Minimum Safety Requirements for Cooking Equipment Cooking Equipment Cooking equipment shall be approved based on one of the following criteria: (A) Listings by a testing laboratory. (B) Test data acceptable to the Authority Having Jurisdiction. [NFPA 96: ] Installation All listed appliances shall be installed in accordance with the terms of their listings and the manufacturer's instructions. [NFPA 96: ] Cooking appliances requiring protection shall not be moved, modified, or rearranged without prior reevaluation of the fire-extinguishing system by the system installer or servicing agent, unless otherwise allowed by the design of the fire extinguishing system. [NFPA 96: ] Exception: Cooking appliances moved to perform maintenance and cleaning, provided the appliances are returned to their original positioning prior to cooking operations, and any disconnected fire-extinguishing system nozzles attached to the appliances are reconnected in accordance with the manufacturer's listed design manual The fire-extinguishing system shall not require re-evaluation where the cooking appliances are moved to perform maintenance and cleaning provided the appliances are returned to approved design location prior to cooking operations, and any disconnected fire-extinguishing system nozzles attached to the appliances are reconnected in accordance with the manufacturer s listed design manual. [NFPA 96: ] All deep-fat fryers shall be installed with at least a sixteen (16) inch (406.4 mm) space between the fryer and surface flames from adjacent cooking equipment. [NFPA 96: ] Exception: Where a steel or tempered glass baffleplate is installed at a minimum eight (8) inches (203 mm) in height between the fryer and surface flames of the adjacent appliance All deep-fat fryers shall be installed with at least a 406 mm (16 in.) space between the fryer and surface flames from adjacent cooking equipment. [NFPA 96: ] Where a steel or tempered glass baffle plate is installed at a minimum 203 mm (8 in.) in height between the fryer and surface flames of the adjacent appliance, the requirement for a 406 mm (16 in.) space shall not apply. [NFPA 96: ] If the fryer and the surface flames are at different horizontal planes, the minimum height of 203 mm (8 in.) shall be measured from the higher of the two. [NFPA 96: ] Operating Controls. Deep-fat fryers shall be equipped with a separate high-limit control in addition to the adjustable operating control (thermostat) to shut off fuel or energy when the fat temperature reaches 475 F (246 C) at one (1) inch (25.4 mm) below the surface. [NFPA 96: 12.2] Cooking Equipment Maintenance. [NFPA 96: 11.5] An inspection and servicing of the cooking equipment shall be made at least annually by properly trained and qualified persons. [NFPA 96: ] Cooking equipment that collects grease below the surface, behind the equipment, or in cooking equipment flue gas exhaust, such as griddles or charbroilers, shall be inspected and, if found with grease accumulation, cleaned by a properly trained, qualified, and certified person acceptable to the authority having jurisdiction. [NFPA 96: ] 1. Paragraphs in Section 515 that are extracted from NFPA 96 are identified. 2. The exception to and are replaced with paragraphs extracted from NFPA Section 515.3, Cooking Equipment Maintenance is deleted as it has been proposed for addition to Section 514 in a separate proposal. This proposal is not original material; its reference/source is as follows: NFPA 96 Standard for Ventilation Control and fire Protection of Commercial Cooking Operations 69

78 Item #: 63 UMC (516.0 ): Theodore C. Lemoff NFPA International Revise text as follows: Recirculating Systems General Requirements. Recirculating systems containing or for use with appliances used in processes producing smoke or grease-laden vapors shall be equipped with components complying with the following: (A) The clearance requirements of Section (B) A hood complying with the requirements of Section (C) Grease removal devices complying with Section (D) The air movement requirements of Sections and (E) Auxiliary equipment (such as particulate and odor removal devices) complying with Section (F) Fire-extinguishing equipment complying with the requirements of Section Exception: References to ducts in Sections and (G) The use and maintenance requirements of (H) The minimum safety requirements of Section (I) All the requirements of this chapter. [NFPA 96: 13.1] Design Restrictions. All recirculating systems shall comply with Section [NFPA 96: 13.2] Only gas- or electrically fueled cooking appliances shall be used. Gas-fueled appliances shall not have the combustion flue outlet(s) directly connected to the recirculating system. Gasfueled appliances shall have a minimum eighteen (18) inch (457.2 mm) clearance from the flue outlet to the filter inlet in accordance with Section and shall meet the installation requirements of NFPA 54, National Fuel Gas Code, or NFPA 58, Liquefied Petroleum Gas Code. [NFPA 96: ] Recirculating systems shall be listed with a testing laboratory. There shall be no substitution or exchange of cooking appliances, filter components, blower components, or fire extinguishing system components that would violate the listing of the appliance. [NFPA 96: ] A recirculating system shall not use cooking equipment that exceeds that recirculating system's labeled maximum limits for that type of equipment, stated in maximum energy input, maximum cooking temperature, and maximum square area of cooking surface or cubic volume of cooking cavity. [NFPA 96:13.2.6] The listing label shall show the type(s) of cooking equipment tested and the maximum limits specified in [NFPA 96: ] A fire-actuated damper shall be installed at the exhaust outlet of the system. The damper shall be constructed of at least the same gauge as the shell. The fire damper shall be constructed of at least the same gauge as the shell. The actuation device shall have a maximum temperature rating of 375 F (190 C). [NFPA 96: ] No electrical wiring shall be installed in the interior sections of the hood plenum that might become exposed to grease. Exception: As permitted by NFPA 70, National Electrical Code The power supply of any electrostatic precipitator (ESP) shall be of the "cold spark," ferro-resonant type in that the voltage falls off as the current draw of a short increases. [NFPA 96: ] Listing evaluation shall include the following: (A) Capture and containment of vapors at published and labeled airflows. (B) Grease discharge at the exhaust outlet of the system not to exceed an average of 5 mg/m3 of exhausted air sampled from that equipment at maximum amount of product that is capable of being processed over a continuous eight (8) hour test per EPA Test Method 202, Determination of Condensable Particulate Emissions for Stationary Sources, with the system operating at its minimum listed airflow. (C) Listing and labeling of clearance to combustibles from all sides, top, and bottom. 70

79 (D) Electrical connection in the field in accordance with NFPA 70, National Electrical Code. (E) Interlocks on all removable components that lie in the path of airflow within the unit to ensure that they are in place during operation of the cooking appliance. [NFPA 96: ] Interlocks. The recirculating system shall be provided with interlocks of all critical components and operations as indicated in Sections through such that, if any of these interlocks are interrupted, the cooking appliance shall not be able to operate. [NFPA 96: 13.3] All closure panels encompassing airflow sections shall have interlocks to ensure the panels are in place and fully sealed. [NFPA 96: ] Each filter component (grease and odor) shall have an interlock to prove the component is in place. [NFPA 96: ] ESP Interlocks Each ESP shall have a sensor to prove its performance is as designed, with no interruption of the power to exceed two (2) minutes. [NFPA 96: ] This The sensor shall be a manual reset device or circuit. [NFPA 96: ] An airflow switch or transducer shall be provided after the last filter component to ensure that a minimum airflow is maintained. This device opens the interlock circuit when the airflow falls 25 percent below the system's normal operating flow or 10 percent below its listed minimum rating, whichever is lower. This switch or transducer shall be a manual reset device or circuit. [NFPA 96: ] Location and Application Restrictions. The location of recirculating systems shall be approved by the Authority Having Jurisdiction. Items to be reviewed in the fire risk assessment shall include, but not be limited to, life safety, combustibility of surroundings, proximity to air vents, and total fuel load. [NFPA 96: ] Additional Fire Safety Requirements In addition to the appliance nozzle(s), a recirculating system shall be listed with the appropriate fire protection for grease filters, grease filtration, odor filtration units, and ductwork where applicable. [NFPA 96: ] In addition to any other fire-extinguishing system actuation device, there shall be a fire extinguishing system actuation device installed downstream of any ESP. [NFPA 96: ] The requirements of Section shall also apply to recirculating system locations Use and Maintenance Automatic or manual covers on cooking appliances, especially fryers, shall not interfere with the application of the fire suppression system. [NFPA 96: ] All filters shall be cleaned or replaced in accordance with the manufacturer's instructions. [NFPA 96: ] All ESPs shall be cleaned a minimum of once per week following manufacturer's cleaning instructions. [NFPA 96: ] The entire hood plenum and the blower section shall be cleaned a minimum of once every three (3) months. [NFPA 96: ] Inspection and testing of the total operation and all safety interlocks in accordance with the manufacturer's instructions shall be performed by qualified service personnel a minimum of once every six (6) months, or more frequently if required. [NFPA 96: ] Exception: Fire-extinguishing equipment shall be inspected in accordance with Section [NFPA 96: ] A signed and dated log of maintenance as performed in accordance with Sections and shall be available on the premises for use by the Authority Having Jurisdiction. [NFPA 96: ] 71

80 1. Paragraphs in Section 516 that are extracted from NFPA 96 are identified as such. 2. The exception to is replaced with a paragraph extracted from NFPA New is proposed to provide information on the appliance label. This proposal is not original material; its reference/source is as follows: NFPA 96, Standard for Ventilation Control and Fire Protection of Commercial Operations (2004) 72

81 Item #: 64 UMC ( ): John Taecker IAPMO Correlation Task Group, Chairman The following was recommend by the Correlation Task Group. (See Correlation Task Group Report Item 19) Revise text as follows: Solid-fuel cooking appliances shall not be installed in confined spaces. The space or room shall be of ample size to permit adequate circulation of heated air. Exception: Solid-fuel cooking appliances listed for installation in confined spaces such as alcoves shall be installed in accordance with the terms of the listing and the manufacturer s instructions. The committee recommends this change to Section , so as not to conflict with definition of confined spaces. The definition of confined spaces provide specific parameters. 73

82 Item #: 65 UMC (Chapter 7 ): Theodore C. Lemoff NFPA International Revise text as follows: Revise all extracts from NFPA 54 in Chapter 7 to the 2009 edition of NFPA 54. To update the extracted sections of the UPC to the latest edition of the NFPA 54 This proposal is not original material; its reference/source is as follows: NFPA 54, National Fuel Gas Code ( proposed) 74

83 Item #: 66 UMC (NFPA 54 Extracts ): Theodore C. Lemoff NFPA International Revise the following Extracts as follows: (See attached Items 1 through 19 on pages 75 1 through 75 8) Note: 1.The information herein is based on the development of the 2006 edition of NFPA 54 following action on Comments. Additional revisions may be made prior to publication. 2.All referenced section numbers are from the 4th printing of the UMC (the most current). 3.Where new sections are added, existing sections with the same designation (number) are not deleted unless specifically stated and are to be renumbered as required. Extracts from other documents should be maintained at the most recent edition, which will be the 2006 edition of NFPA

84 Note: 1. The information herein is based on the development of the 2006 edition of NFPA 54 following action on Comments. Additional revisions may be made prior to publication. 2. All referenced section numbers are from the 4th printing of the UMC (the most current). 3. Where new sections are added, existing sections with the same designation (number) are not deleted unless specifically stated and are to be renumbered as required. Item 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 is known, it shall be used in calculating the size opening required to provide the free area specified. Where the design and free area are not known, it shall be assumed that wood louvers will have 25 % free area and metal louvers and grilles will have 75% free area. Non motorized louvers and grilles shall be fixed in the open position. Screens shall not be smaller than 1 4 in. mesh. Motorized louvers shall be interlocked with the equipment so they are proven in the full open position prior to main burner ignition and during main burner operation. Means shall be provided to prevent the main burner from igniting should the louver fail to open during burner startup and to shut down the main burner if the louvers close during burner operation. [NFPA 54:9.3.7] Item Combustion-Air Ducts. Combustion-air ducts shall comply with the following: (1) Ducts shall be of galvanized steel or an equivalent corrosion-resistant material a material having equivalent corrosion resistance, strength, and rigidity. Exception: Within dwellings units, unobstructed stud and joist spaces shall not be prohibited from conveying combustion air, provided that not more than one fireblock is removed. (2) Ducts shall terminate in an unobstructed space, allowing free movement of combustion air to the appliances. (3) Ducts shall serve a single space. (4) Ducts shall not service both upper and lower combustion air openings where both such openings are used. The separation between ducts serving upper and lower combustion-air openings shall be maintained to the source of combustion air. (5) Ducts terminating in attics shall not be screened. (6) Intakes for combustion-air ducts located exterior to the building shall have the lowest side of the combustionair intake openings located at least 12 inches vertically from the adjoining grade level. (7) Horizontal upper combustion-air ducts shall not slope downward toward the source of combustion air. (8) The remaining space surrounding a chimney liner, gas vent, special gas vent, or plastic piping installed within a masonry, chimney flue metal, or factory-built chimney shall not be used to supply combustion air, unless it is listed and shown in the manufacturer's installation instructions. [NFPA 54: ] Item Application. The installation of gas vents shall comply with the following requirements: Gas vents shall be installed in accordance with the terms of their listings and the manufacturer s instructions A Type B-W gas vent shall have a listed capacity not less than that of the listed vented wall furnace to that it is connected A gas vent passing through a roof shall extend through the entire roof flashing, roof jack, or roof thimble and be terminated with a listed termination cap 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% of the vertical height of the vent. 75-1

85 Exception: Systems designed and sized as provided in Section or in accordance with other approved engineering methods. Vents serving Category I fan-assisted appliances shall be installed in accordance with the appliance manufacturer's instructions and Section or other approved engineering methods Gas vents installed within masonry chimneys shall be installed in accordance with the terms of their listing and the manufacturers' installation instructions. Gas vents installed within masonry chimneys shall be identified with a permanent label installed at the point where the vent enters the chimney. The label shall contain the following language: "This gas vent is for appliances that burn gas. Do not connect to solid, or liquid-fuelburning appliances or incinerators Gas Vent Termination. The termination of gas vents shall comply with the following requirements: A gas vent shall terminate in accordance with one of the following: (1) Above the roof surface with a listed cap or listed roof assembly. Gas vents 12 in. (300 mm) in size or smaller with listed caps shall be permitted to be terminated in accordance with Figure 8-2, 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. (3.1 m). (2) Industrial gas utilization equipment as provided in (3) Direct-vent systems as provided in (4) Equipment with integral vents as provided in (5) Mechanical draft systems as provided in (6) Ventilating hoods and exhaust systems as provided in A Type B or a Type L gas vent shall terminate at least 5 ft. (1.5 m) in vertical height above the highest connected equipment draft hood or flue collar A Type B-W gas vent shall terminate at least 12 ft. (3.7 m) in vertical height above the bottom of the wall furnace A gas vent extending through an exterior wall shall not terminate adjacent to the wall or below eaves or parapets, except as provided in and Decorative shrouds shall not be installed at the termination of gas vents except where such shrouds are listed for use with the specific gas venting system and are installed in accordance with manufacturers' installation instructions All gas vents shall extend through the roof flashing, roof jack, or roof thimble and terminate with a listed cap or listed roof assembly. [NFPA 54: (6)] A gas vent shall terminate at least 3 ft (0.9 m) above a forced air inlet located within 10 ft (3.0 m). [NFPA 54: (7)]] Item Gas Vents Serving Equipment on More Than One Floor. 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. For the purpose of this section, crawl spaces, basements, and attics shall be considered as floor levels. All gas utilization equipment connected to the common vent shall be located in rooms 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. (See Figure 8-3.) The size of the connectors and common segments of multistory venting systems for gas utilization equipment listed for use with Type B double-wall gas vent shall be in accordance with Table 8-5, provided: (1) The available total height (H) for each segment of a multistory venting system is the vertical distance between the level of the highest draft hood outlet or flue collar on that floor and the centerline of the next highest inter connection tee. (See Figure 8-4.) (2) The size of the connector for a segment is determined from its gas utilization equipment heat input and available connector rise, and shall not be smaller than the draft hood outlet or flue collar size. (3) The size of the common vertical vent segment, and of the interconnection tee at the base of that segment, shall be based on the total gas utilization equipment heat input entering that segment and its available total height. 75-2

86 Item 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 32 degrees Fahrenheit. [NFPA 54:12.8.2] Item 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 8-3. Factory-built chimney sections shall be joined together in accordance with the chimney manufacturer's instructions. Item Except as provided for in The maximum horizontal length of a single wall connector shall be 75 percent of the height of the chimney or vent except for engineered systems. Except as provided for in Section The maximum horizontal length of a type B double wall connector an individual connector for a chimney or vent system serving multiple appliances, the maximum length of an individual connector 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. [NFPA 54: ] (NOTE: See proposed addition of Section under Item 8) Item The 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. The maximum length of an individual connector for a chimney or vent system 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. [NFPA 54: ] Item Connection to Chimney Liners. Connections between chimney liners and listed double-wall connectors shall be made with listed adapters designed for such purpose. [NFPA 54:13.1.8] Item Vertical Vent Upsizing/7 x Rule. Where the vertical vent has a larger diameter than the vent connector, the vertical vent diameter shall be used to determine the minimum vent capacity, and 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 designed in accordance with approved engineering methods. [NFPA 54: ] Item Draft Hood Conversion Accessories. Draft hood conversion accessories for use with masonry chimneys venting listed Category I fan-assisted appliances shall be listed and installed in accordance with the listed accessory manufacturers installation instructions. [NFPA 54: ] 75-3

87 Item Tables 8-5 through 8-9 shall be used for chimneys and vents not exposed to the outdoors below the roof line. 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. A Type B vent passing through an unventilated enclosure or chase insulated to a value of not less than R8 shall not be considered to be exposed to the outdoors. Table 8-7 in combination with Table 8-15 shall be used for clay-tile-lined exterior masonry chimneys, provided all of the following are met: (1) The vent connector is Type B double wall. (2) The vent connector length is limited to 1-1/2 ft for each inch (180 mm/mm) of vent connector diameter. (3) The appliance is draft hood equipped. (4) The input rating is less than the maximum capacity given in Table 8-7. (5) For a water heater, the outdoor design temperature shall not be less than 5 F ( 15 C). (6) For a space-heating appliance, the input rating is greater than the minimum capacity given by Table (7) Where the conditions of (1) through (6) cannot be met, an alternative venting design shall be used, such as a listed chimney lining system. Exception: Vents serving listed appliances installed in accordance with the appliance manufacturer s instructions and the terms of the listing. Item The vent connector capacities listed in the common vent sizing tables include allowance for two 90 degree elbows. For each additional elbow up to and including 45 degrees, the maximum vent connector capacity listed in the venting tables shall be reduced by 5%. For each elbow greater than 45 degrees up to and including 90 degrees, the maximum vent connector capacity listed in the venting tables shall be reduced by 10%. Item Common Vent Minimum Size. The cross-sectional area of the common vent shall be equal to or greater than the cross-sectional area of the largest connector. [NFPA 54: ] Item Tee and Wye Fittings. Tee and wye fittings connected to a common vent shall be considered as part of the common vent and constructed of materials consistent with that of the common vent. [NFPA 54:13.2.9] Item Tables 8-10 through 8-14 NFPA Tables 13.2(a) and 13.2(b) shall be used for chimneys and vents not exposed to the outdoors below the roof line. A Type B vent or listed chimney lining system passing through an unused masonry chimney flue unventilated enclosure or chase insulated to a value of not less than R8 shall not be considered to be exposed to the outdoors. Tables 8-16 and 8-19 shall be used for clay-tile-lined exterior masonry chimneys, provided all of the following conditions are met: (1) Vent connector is Type B double-wall. (2) At least one appliance is draft hood equipped. (3) The combined appliance input rating is less than the maximum capacity given by Table 8-16 (for NAT+NAT) or Table 8-18 (for FAN+NAT). (4) The input rating of each space-heating appliance is greater than the minimum input rating given by Table 8-17 (for NAT+NAT) or Table 8-19 (for FAN+NAT). (5) The vent connector sizing is in accordance with Table (6) Where these conditions cannot be met, an alternative venting design shall be used, such as a listed chimney lining system. Exception: Vents serving listed appliances installed in accordance with the appliance manufacturer s instructions and the terms of the listing installation instructions. 75-4

88 75-5

89 75-6

90 75-7