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Radiator only works when bleed valve is on.

  • 19-12-2014 09:23AM
    #1
    ebbsy
    Registered Users, Registered Users 2 Posts: 7,144 ✭✭✭


    I have a rad in the kitchen that heats up only when the bleed valve is on.

    I have taken it off the wall and hosed in through.

    Any ideas ? Do I need a new rad.

    Thanks.


Comments

  • #2
    newmug
    Banned (with Prison Access) Posts: 3,571 ✭✭✭newmug


    Don't get ya. Do you mean when the bleed valve is open?


  • #3
    SpaceTime
    Closed Accounts Posts: 9,088 ✭✭✭SpaceTime


    The bleed valve - as in the air vent?


  • #4
    ebbsy
    Registered Users, Registered Users 2 Posts: 7,144 ✭✭✭ebbsy


    Yes, when its open. Sorry chaps.


  • #5
    Dtp1979
    Registered Users, Registered Users 2 Posts: 12,910 ✭✭✭✭Dtp1979


    ebbsy wrote: »
    I have a rad in the kitchen that heats up only when the bleed valve is on.

    I have taken it off the wall and hosed in through.

    Any ideas ? Do I need a new rad.

    Thanks.

    What do you mean? As on it heats only when you open the vent?


  • #6
    SpaceTime
    Closed Accounts Posts: 9,088 ✭✭✭SpaceTime


    Sounds like something's blocked on the return side.

    Do you mean the water's actually flowing into the radiator and out through the vent all the time?

    This really isn't a good idea and will damage your heating system by introducing fresh, oxygenated water (if it's an open system) and could potentially cause issues with rusting and even limescale build up.

    The water shouldn't be changed in your system more than absolutely necessary.


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  • #7
    ebbsy
    Registered Users, Registered Users 2 Posts: 7,144 ✭✭✭ebbsy


    When I open the vent ( where the rad is bled ), it heats up. Then when I close the vent, it goes cold again. Rad does not retain the heat.


  • #8
    SpaceTime
    Closed Accounts Posts: 9,088 ✭✭✭SpaceTime


    Is it making a hissing noise when you open the air vent?

    It sounds to me like you've a leak and the radiator's filling with air, then heating for a while when you vent it.

    If radiators are continuously filling with air, it's getting into the system from somewhere i.e. a leak and water's getting out.

    You might want to get the system checked over professionally. There could be a small leak somewhere which could possibly be addressed with something a simple as tightening a compression fitting or using a leak sealant.


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