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Thread: R22 leak

  1. #1
    Join Date
    May 2005
    New Jersey
    We have a water cooled Coil in a coil unit. We have a definite R22 leak and have a operational diagnostic question. The condenser water return temperature on a normal day would be in the 75* to 85* range. As we noticed the discharge air was not maintaining the space, we also noticed the water return temp went up drastically to the 190* range. Without doing an in depth pressure test, is this a good indicator that the refrigerant is leaking through to the water side?

  2. #2
    Join Date
    Nov 2000
    Coastal Georgia
    Seeing is believing. Do the pressure check. Sometimes you can pick it up with a detector over the discharge water by catching some of it.

  3. #3
    Join Date
    Dec 2003
    Kenilworth New Jersey
    At 190* you probably popped a relief valve

  4. #4
    Join Date
    Jul 2000
    Guayaquil EC
    The HP safety should trip prior to blowing the relief valve. If you got 190F condenser water, one or the other is going to happen.

    Check the HP control.

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