How To Bleed A Radiator
Firstly you must open any thermostatic radiator valves and run your central heating for 10 – 15 minutes, you then turn off the system and turn the key anti-clockwise into the valve situated on the top corner of the radiator. There may be a few drips so have something to get them. Secondly you will hear a hissing noise if the airtrapped inside the radiator escapes out through the valve, once water begins to leak you should close the valve and wipe any excess water. Repeat this procedure on each radiator making sure you don’t open the valve more then needed and turn back on the central heating when finished to confirm there are no dripping valves,if dripping valves are found then tighten if necessary.
If your home is unheated and unoccupied for a long time then you must drain the heating system. Check that the valves open and close without difficulty. Note where the stopcock is placed as this is important in turning the cold water supply off in emergencies. Make sure you don’t leave overflow pipes leaking because this will cause a flood by the leaking water freezing and blocking the pipe. Essentially you should bleed your radiators at home at least once a year so no problems occur.
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