Recommended External Water Heater Sizing Chart. 8 A PRODUCT OF THERMA-FLOW, INC., WATERTOWN, indirect storage tank heaters, numerous converter applications, and as tankless water heaters for high rise or low water pressure area installations.
Indirect – Fired Water Heater For service or repairs to the water heater, call your heating contractor. When seeking informa-tion on the water heater, provide Model Number and Serial Number as shown on Rating Label. Model Number NY _ _ _ SL