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Radiators slow to heat after drain and refil of systme

Discussion in 'Plumbing and Central Heating' started by rb1980, 30 Jan 2020.

  1. blubs

    blubs

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    'undo'... if the radiator isnt too big why not tighten both valves, undo bleed screw and wait till it stops letting out water (10 secs or so), then you know its isolated and you can undo (crack lol) the nuts ON THE RADIATOR SIDE a bit till they dribble, catch the water in a shallow tray, when its empty you can fully undo these nuts and remove radiator, (carefull of carpets , the sludge in the bottom is like ink), take it outside and flush with hose if you can, then you can quickly undo valves with no radiator to check water is flowing through them (into bucket), this should sort it, tell you a lot about the state of the system or reduce that variable, IE if its all ok, then your problem is elsewhere, maybe that filter mentioned previously..
     
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  3. rb1980

    rb1980

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    Righto , yes that’s what I thought it meant lol cheers
     
  4. rb1980

    rb1980

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    FWIW I took out the bleed valve and opened the valves on the radiator and the water flowed ok .. not quite sure how fast it’s suppose to come out , was some black bits floating in the water tho
     
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