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This edition of NFPA 90B, Standard for the Installation of Warm Air Heating and Air-ConditioningSystems, was prepared by the Technical Committee on Air Conditioning. It was issued by theStandards Council on August 1, 2017, with an effective date of August 21, 2017, and supersedes allprevious editions.This edition of NFPA 90B was approved as an American National Standard on August 21, 2017.
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"This standard shall cover construction, installation, operation, and maintenance of systems for warm air heating and air conditioning, including filters, ducts, and related equipment, to protect life and property from fire, smoke, and gases resulting from fire or from conditions having manifestations similar to fire."--Page 4.