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    Eslam90 Posts: 1, Reputation: 1
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    Jun 20, 2016, 12:41 PM
    When doea a chilled close loop system need a pressurization unit?
    Hello,

    We have finished installing a closed loop chilled water system and my question is.. We are now using a bladder type expansion tank with water make up connected to the expansion line (the pipeline from the tank to loop) and the water make up passes through a typical pressure control set ( regulating valve, check valve, relief valve)
    I would like to know if with this arrangement do I need a pressurization unit that receives the make up water in a tank then pump it to system?

    Ps: the make up water now is provided from the domestic water supply network

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