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    timowner's Avatar
    timowner Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 21, 2008, 07:37 PM
    Purging hot water system
    I am having trouble purging air from my closed-loop hot water oil system.
    I close gate valve on return, then open purge valve (with hose attatched).
    Water runs, no air, pipes get hot but soon after cool down??
    Any ideas?
    Timowner
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Nov 21, 2008, 11:22 PM
    See if you can locate a high mounted vent valve on the system
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