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relief valve

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Dave_4
Dave_4 Member Posts: 1,404
in THE MAIN WALL
Heating question for a standard atmospheric vented 50 gallon hot water heater that is being used for space heating? What should be used for the relief valve, A standard T & P valve or a #30 relief valve rated for hot water boiler? The present valve is now leaking due to a faulty fill valve. The valve that is on now is a #30 relief valve. What is the proper valve that should be on.

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  • Jim Pompetti
    Jim Pompetti Member Posts: 552
    PRV

    Since the unit UL is listed with the PRV it must stay on . But since your using it for heat add the 30# valve . Also you need a secondary high limit . We usually add it to the Thermal
    couple There s a jumper made by Honeyweel that will work
  • Dave_4
    Dave_4 Member Posts: 1,404
    relief valve

    Jim, Should this heater have both relief valves installed, the hwt&p and the #30 relief ??
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