Indirect-Fired Water Heater Testing Standard

Standard Scope

This test method is intended to apply to indirect-fired water heaters designed for installation with a hot water boiler or some other external source of heated water.

This standard is limited to indirect-fired water heaters having a total volume (potable plus heat source) of 120 gallons or less.

This standard does not apply to direct-fired instantaneous or storage water heaters, direct-fired instantaneous water heaters, tankless water heaters, or heat pump water heaters.

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