|CLASS NUMBER:||2901-86||DESCRIPTION:||DOMESTIC HEATERS (GAS)-Water Heaters - Indirect, For Use With External Heat Source-C|
Indirect Water Heater. A closed vessel in which water is heated by an external source of hot water not exceeding a temperature of 210 F. The heated water in the vessel is withdrawn for use external to the vessel at pressures not exceeding 160 psig. The indirect water heater includes the means to control the flow of the external heat source water and all controls and devices necessary to prevent the stored water temperature from exceeding 210°F.
|IAS - U.S. Requirement 1-91||Indirect Water Heaters for Use With External Heat Source|
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