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    daniel fenlon's Avatar
    daniel fenlon Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Dec 5, 2009, 07:49 AM
    Hot water circulating through headertank in lotf
    My central heating is pumping hot water through overflow pipe into header tank in loft and returning back into the radiator system.I thought the header tank was only to top up when needed .I have a cover on tank.What can I do to stop this problem
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #2

    Dec 5, 2009, 09:18 AM

    Check the system pressure gauge (if present). Check for isolation valves in the tank loop.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #3

    Dec 5, 2009, 12:57 PM
    Check for a stuck fill valve.
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