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ANSI/ASHRAE 103-2017

Method of Testing for Annual Fuel Utilization Efficiency of Residential Central Furnaces and Boilers

The purpose of this standard is to provide procedures for determining the annual fuel utilization efficiency of residential central furnaces and boilers. This standard includes (a) a test method for cyclic and part-load performance; (b) methods for interpolating and extrapolating test data, and (c) calculation.

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American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ASHRAE]


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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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