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  1. #1
    Join Date
    Jun 2003
    Posts
    33

    Charging Question

    I know with a piston the system is charged based on the superheat, and txv's with sub-cooling. How do you charge a system with a txv on the condenser and a piston in the evaporator?

  2. #2
    Join Date
    Aug 2007
    Location
    Spartanburg, S.C.
    Posts
    58
    superheat in air conditioning.

  3. #3
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,764
    That would be called a heat pump.
    The TXV in the outdoor unit is bypassed, either externally or internally in teh cooling mode.
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