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bleeding rads?

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  • 11-01-2008 6:23pm
    #1
    alienhead
    Closed Accounts Posts: 545 ✭✭✭


    hi, half my bedroom rad is cold.... does this mean i need to bleed it?

    if so, how do i go about this?


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    #2
    Wishbone Ash
    Registered Users Posts: 24,995 ✭✭✭✭Wishbone Ash


    alienhead wrote: »
    hi, half my bedroom rad is cold.... does this mean i need to bleed it?

    if so, how do i go about this?
    There should be a little hexagonal/four-sided screw head on the top either at the side or at the back. Loosed it and allow the air out gently - have a rag handy and be prepared to tighten it quickly or you will have dirty black smelly water on the wall and floor.


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    #3
    JamesM
    Registered Users Posts: 1,775 ✭✭✭JamesM


    If it is the top of the rad that's cold, then there's air in it and you need a key to bleed it. If air comes out, but no water, then you need to let water into the system - maybe a valve in the hotpress or from a tank in the attic.
    If one side is heating more than the other, then the flow through the rad is restricted for some reason. Make sure the valves at both ends are open.
    That's a start anyway.
    Jim.


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    #4
    magooly
    Registered Users Posts: 159 ✭✭magooly


    be wild careful opening and tigtneing that bolt, specially if its an old rad, if u manage to wring it or shear it off you are in for a world of trouble. I only say this since Ive had the misfortune.


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    #5
    JamesM
    Registered Users Posts: 1,775 ✭✭✭JamesM


    magooly wrote: »
    be wild careful opening and tigtneing that bolt, specially if its an old rad, if u manage to wring it or shear it off you are in for a world of trouble. I only say this since Ive had the misfortune.

    This usually happens to veha rads where the vent is at the back of the rad. Sometimes people put the vent key on the vent and then, thinking backwards, try to turn it the wrong way, snapping it off.
    Jim.


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    #6
    tm2204
    Registered Users Posts: 991 ✭✭✭tm2204


    I have a similar problem but in my case the last rad upstairs does not get hot at all!

    The second last one heats fine but the last one does not! I have bled it but still no heat.

    Any Ideas?


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    #7
    theplumber
    Closed Accounts Posts: 8 ✭theplumber


    Sorry up to my eyes at moment editing plumbersdiary
    just put balancing radiators into google and study some great postings on this subject by some very clever ,methodical DIY enthusiasts. and you will soon become an expert


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    #8
    tm2204
    Registered Users Posts: 991 ✭✭✭tm2204


    Thanks very much for that....


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