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31、ed at no cost at www.nfpa.org/docinfo.90A-1 NFPA and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy, Massachusetts 02169. Copyright 2017 National Fire Protection Association . All Rights Reserved. NFPA 90A Standard for the Installat
32、ion of Air-Conditioning and Ventilating Systems 2018 Edition This edition of NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems, was prepared by the Technical Committee on Air Conditioning. It was issued by the Standards Council on August 1, 2017, with an effective d
33、ate of August 21, 2017, and supersedes all previous editions. This edition of NFPA 90A was approved as an American National Standard on August 21, 2017. Origin and Development of NFPA 90A This standard dates from 1899, when committee attention was rst given to blower and exhaust systems. Prior to 19
34、36, the subject of air conditioning was covered in NFPA standards on blower systems. In 1937, it was decided to prepare a separate standard on air-conditioning, warm air heating, and ventilating systems. This standard was initially adopted in 1937 with subsequent amendments in 1938, 1939, 1940, 1942
35、, 1950, 1952, 1955, 1956, 1960, 1961, 1963, 1964, 1965, 1968, 1971, 1973, 1976, 1980, 1984, and 1989. The 1993 and 1996 editions were reconrmations of the 1989 edition. The 1999 edition contained changes that were mainly editorial in nature. The 2002 edition incorporated format changes to comply wit
36、h the Manual of Style for NFPA Technical Committee Documents and new provisions for the removal of accessible abandoned materials in concealed spaces and plenums. The only changes to the 2006 edition were to update “ame spread rating” to “ame spread index.” The major change in the 2009 edition was t
37、o replace the references to NFPA 255 with ANSI/UL 723 and ASTM E84, because NFPA 255 was withdrawn. All three test standards were quite similar. The changes in the 2012 edition were edition updates of the referenced standards. For the 2015 edition, the changes were primarily editorial alterations, r
38、eference updates, and clarications of existing language. Also, a section and test method for air dispersion systems was added. For the 2018 edition, the changes are primarily editorial alterations, reference updates, clarications of existing language, and corrections for changes of terminology. Also
39、, an option for testing ame spread of plastic pipe for use in plenums has been added.INSTALLATION OF AIR-CONDITIONING AND VENTILATING SYSTEMS 90A-2 2018 Edition Technical Committee on Air Conditioning Ralph D. Gerdes, Chair Ralph Gerdes Consultants, LLC, IN SE Ramzi A. Amawi, Intertek Testing Servic
40、es, OH RT Joseph F. Andre, Steel Tube Institute, WA M Rep. Steel Tube Institute of North America Justin B. Biller, Carilion Clinic, VA U James S. Buckley, Jacobs, TX IM Rep. American Society of Heating, Refrigeration & Air Conditioning Engineers Inc. Laurence W. Caraway, Jr., Kitchen Klean Inc., NH
41、IM Rep. National Air Duct Cleaners Association Michael Earl Dillon, Dillon Consulting Engineers, Inc., CA SE James T. Dollard, Jr., IBEW Local Union 98, PA L Rep. International Brotherhood of Electrical Workers Jonathan Flannery, AHA - ASHE, AR U Thomas P. Hammerberg, Automatic Fire Alarm Associatio
42、n, Inc., GA M Rep. Automatic Fire Alarm Association, Inc. John C. Harrington, FM Global, MA I Jonathan Hartsell, Rodgers, NC IM Marcelo M. Hirschler, GBH International, CA M Rep. American Fire Safety Council/Plenum Cable Assn. Eli P. Howard, III, Sheet Metal & Air Conditioning Contractors Natl. Assn
43、., VA IM Anthony Hurst, Mason & Hanger, KY SE Ralph A. Koerber, ATCO Rubber Products, Inc., TX M Rep. Air Diffusion Council William E. Koffel, Koffel Associates, Inc., MD M Rep. Society of the Plastics Industry, Inc. Timothy J. Orris, AMCA International, Inc., IL M Rep. Air Movement & Control Associ
44、ation Ajay V. Prasad, JENSEN HUGHES, MD SE Rep. JENSEN HUGHES Michael Schmeida, Gypsum Association, OH M Dwayne E. Sloan, UL LLC, NC RT George A. Straniero, AFC Cable Systems, Inc., NJ M Rep. National Electrical Manufacturers Association Alternates Diane B. Copeland, Dillon Consulting Engineers, Inc
45、., CA SE (Alt. to Michael Earl Dillon) Charles C. Cottrell, North American Insulation Manufacturers Assn., VA M (Voting Alt.) Thomas M. Dusza, JENSEN HUGHES, CA SE (Alt. to Ajay V. Prasad) David L. Hall, Apollo America Inc., MI M (Alt. to Thomas P. Hammerberg) Amando Lyndyll Hisole, ccrd partners, T
46、X SE (Voting Alt.) Randall K. Laymon, UL LLC, IL RT (Alt. to Dwayne E. Sloan) Michael Lloyd, Honeywell International, Inc., IL M (Alt. to George A. Straniero) Harold C. Ohde, IBEW 134/Electrical Joint Apprenticeship Training & Trust, IL L (Alt. to James T. Dollard, Jr.) Mark Terzigni, Sheet Metal &
47、Air Conditioning Contractors Natl. Assn., VA IM (Alt. to Eli P. Howard, III) William A. Webb, WEBB FIRE Protection Consulting, LLC, FL IM (Alt. to James S. Buckley) Allan Fraser, NFPA Staff Liaison This list represents the membership at the time the Committee was balloted on the nal text of this edi
48、tion. Since that time, changes in the membership may have occurred. A key to classications is found at the back of the document. NOTE: Membership on a committee shall not in and of itself constitute an endorsement of the Association or any document developed by the committee on which the member serv
49、es. Committee Scope: This Committee shall have primary responsibility for documents on the construction, installation, operation, and maintenance of systems for air conditioning, warm air heating, and ventilating including lters, ducts, and related equipment to protect life and property from re, smoke, and gases resulting from re or from conditions having manifestations similar to re.CONTENTS 90A-3 2018 Edition Contents Chapter 1 Administration . 90A 4 1.1 Scope. . 90A 4 1.2 Purpose.
