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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]
