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Thread: VRF capacity

  1. #1
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    VRF capacity



    Hi Guys,

    Wonder if you can give me some advice.. I have a Mitsubishi VRF water source heatpump installed in my house, where the unit model is a PQRY-P250YHM-A, where the heating capacity is around 30kw. I have been monitoring the energy consumption of the unit and I find that where I only run one small indoor unit (2.5kw), the consumption of the outdoor unit is greater than this.. Is there a minimum capacity that you should run a VRF system at? Some advice on how to run the system would be good.. :-S

    Thanks, Ad



  2. #2
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    Re: VRF capacity

    typically its no less than 20% of the outdoor capacity

  3. #3
    Join Date
    Jun 2009
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    Re: VRF capacity

    2.5kw is the nominal heating/cooling duty of the indoor unit NOT the electrical consumption rate.
    The PQRY is at it's most efficient at above 25% the total system diversity.
    Cheers
    Stu
    Tool's ? check ! Condom's ? check !
    If you can't fix it , f*ck it !!!

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