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ASHRAE STD 124 2007 Edition, January 27, 2007
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METHODS OF TESTING FOR RATING COMBINATION SPACE-HEATING AND WATER-HEATING APPLIANCES
Includes all amendments and changes through Errata , February 14, 2011
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This test method is intended to cover electric, gas-fired, and oil-fired combination space-heating and water-heating appliances.

This standard covers appliances up to 300,000 Btu/h (87.9 kW) rated input.

PURPOSE

The purpose of this standard is to establish a method of test to rate the performance of a combination space-heating and water-heating appliance.