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ANSI/AHRI 1500-2015

Performance Rating of Commercial Space Heating Boilers

This standard applies to gas and oil-fired steam and hot water Packaged Boilers, as defined in Section 3, that have an Input Rating equal to or greater than 300,000 Btu/h, that are: A steam boiler designed to operate at or below a steam pressure of 15 psig; or A hot water boiler designed to operate at or below a water pressure of 160 psig and a temperature of 250 °F; or A boiler that is designed to be capable of supplying either steam or hot water, and designed to operate under the conditions in Sections 2.1.1 and 2.1.2 of this scope.


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Air-Conditioning and Refrigeration Institute [ARI]


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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.

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