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.

PURPOSE

To establish a method of test to determine the performance of Indirect-Fired Water Heaters; both Indirect-Fired Storage Waters Heaters and Indirect-Fired Instantaneous Water Heaters.