putting a t where the ptr valve is

The Tank putting a t where the ptr valve is

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  • #4011

    Looking for pro’s and con’s here…

    I want to place a tube-in-tube type heat exchanger (from a solar hot system) on the side of a fairly new (like one year old) Rheem 50 gallon gas fired hot water heater. The question is…

    can I T the exiting PTR port so that the PTR and the return side of the heat exchanger can share the port? If so, what is the best orientation of the T? I’m thinking the PTR probe has to go somewhat into the tank so the T has to be placed long side perpendicular to the tank.

    All help appreciated.


    Larry Weingarten

    Hello: I’m meddling with your solar design here, but as gas heats largely from the bottom, solar would be competing with gas to heat the same water and the gas will win! Why not use the solar to heat a separate tank, that then feeds the gas fired heater? This two-tank system permits solar to operate most efficiently and prevents any competition with gas. Or, I may have the wrong assumptions in mind :P. In any event, the probe from the T&P must be in the tank, within six inches of the top.

    Yours, Larry

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