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triangle smart tank and solo

I have a customer and he says that in normal space heating the boiler is at 15-20 psi and when a call for DHW it drops 5 psi.   Any ideas on this??? Please put input in.   thanks


  • SWEI
    SWEI Member Posts: 7,356
    One possibility

    the DHW pump is oversized and pumping away from the pressure gauge.
  • plumbgod
    plumbgod Member Posts: 9
    good point

    that is kind of what i was thinking.  Just moving way to fast though it.  I will see if it sized correctly.  any other ideas by chance?
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