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  1. Thank you for your helpful reply. It seemed to...

    Thank you for your helpful reply.

    It seemed to me that reversing the water flow was a reasonable plan as it agrees with the widely-published theory of heat exchanger operation and no one in this...
  2. Yes, there was a small improvement in performance...

    Yes, there was a small improvement in performance in either mode by having the cooling/warming medium flow in the opposite direction of the refrigerant. It results in the difference in temperature...
  3. I suspect that is the answer right from the start...

    I suspect that is the answer right from the start has been to find someone with the proper qualification on this equipment. So far, we've yet to find her/him.

    Since I last wrote, I found a valve...
  4. A broader view of this

    Thank you very much to all who offered an opinion on this.

    I likely should have said that the reason for going to all this trouble for a machine nearly 40 years old is that there is no desire to...
  5. I thank the three who responded to my post. You...

    I thank the three who responded to my post. You hit the nail on the head: the problem would have been resolved long ago had we a technician qualified on this design. Perhaps if I contact Climate...
  6. Ground Source beats several Pros: Water remedy needed

    I'm writing to find out if there is a valve available to reverse the direction of water (not refrigerant) flow in a ground-source heat pump. I am the son of the owner, an elderly lady whose late...
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