Flo-check on a domestic HW loop?

steve novak

I wanted to get some opions about installing a flow check on the feed to my DHW. I intstalled flow checks on the other three zones but I was not sure about the DHW. My though was who cares if some heat migrates into the domestic loop if some of my other zones are calling. I do not thing it would be enough to raise the temp by that much and would it not help mataintain the tank tempwhen the DHW zone was not calling. Iam I wrong in my thinking and should I just install th eflow check.

Thank You

Ken Field

Install the check

You may get much hotter water than the tank is set for and it could scald someone. There is no guarantee that it would even circulate on gravity, but Murphy is ever present. If the boiler is cold-start, you could reverse the temp exchange in the summer and waste some of the energy in the domestic tank for no reason.

Ken F

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