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  1. Answers
    3
    Views
    10,919

    Yes the system can work without the PU and with...

    Yes the system can work without the PU and with expansion tank only
    But if you lost the pressure! What you will do?. you need to fill again with treated water... so PU can do that automatically
    But...
  2. On Coil Temperature : Is the temperature of air...

    On Coil Temperature : Is the temperature of air before the coil (Air Still hot before entering the cooling coil for example)

    Off Coil Temperature : Is the temperature of air After the coil (Air is...
  3. Answers
    3
    Views
    10,919

    PU is to maintain the initial pressure of system...

    PU is to maintain the initial pressure of system and to make up any leak in the system, the PU and expansion tank shall be in the same line connected to the return header of pumps, if there is an air...
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