circulation

  1. WILLIAM ALDRIDGE

    No circulation after reaching op. temp

    Forgive me if this has been addressed elsewhere; I did a cursory search but didn't see anything helpful. I have Rinnai - 69K BTU - 95.5% AFUE - Combi Gas Boiler - Direct Vent (Model: E75CN) water-heater for my radiant heating system (and domestic hot water). When the thermostat calls for heat...
  2. ordinarily_confused

    Help Identifying plumbing part

    Can anyone tell me what this part is and how to use it or adjust it? I have a circulator pump on my water heater for instant hot water. There are two of these devices--one on either side of the pump. There is no water flowing through the pump after I had a new water heater installed. If these...
  3. C.Chase

    WH extra-circulation line?

    Hi, I've just had a crash course in WH's! Thanks to everyone in this forum, lots of helpful information!! Currently, getting estimates on replacing this nearly 17yr WH, Rheem Ngas 50g, it started gushing out the bottom- where the blue meets the white tank in pict-- I never did any kind of drain...
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