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ANSI Y32.2.4-1949 (R1998)

Graphic Symbols for Heating, Ventilating and Air Conditioning

This Standard has been developed for use on drawing. Architects, contractors, and engineers, by the use of these symbols on their plans, will have a standard method of indication for heating, air conditioning, and allied items. Confusion in the interpretations of requirements can thus be avoided.

Content Provider
American Society of Mechanical Engineers [asme]

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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.