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  1. basseng

    Constant Primary-Variable Secondary Loop CWS Problem

    Thanks all for your input. Proper operation of the flow switches and the temperature sensors have been confirmed. The mechanical contractor will remove the flapper in the check valve. If the problem continues to exist we will then perform a diagnostic on the low load cutout of the chiller...
  2. basseng

    Constant Primary-Variable Secondary Loop CWS Problem

    AlanN, the check valve is my first suspect, but I wish to review all culprits before deciding which one will be charged. Thanks for the reply.
  3. basseng

    Constant Primary-Variable Secondary Loop CWS Problem

    System Description: 2 Trane Centravac 145 Ton chillers in parallel each with a constant flow 290 gpm at 35 ft. head (5 hp) centrifugal chilled water primary pump. 2 variable speed (Danfoss VLT6000 Drives)secondary chilled water pumps (B&G 5x5x9.5 in-line centrigugal)in parallel (1 on...

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