How to bleed a Radiator.
It's a good idea NOT to bleed radiators with the central heating pump ON - if you do, there's always a risk that air might be drawn into the system making your problems worse.
1. With warm water in the radiator, switch off the Central Heating system.
2. Fit a bleed key onto the bleed valve (this is usually at the top at one end of the radiator - on some designs of radiator, it may be at the back).
3. Loosely wrap a piece of old cloth around the key to catch any expelled water.
4. Open the bleed valve by turning the bleed a 1/2 turn anti clockwise - hissing of air being expelled will normally be heard.
5. When water starts to dribble out of the valve, close the valve by turning the key a 1/2 turn clockwise. DO NOT OVER TIGHTEN.
6. If the Central Heating system is a sealed system, check the pressure and, if necessary, top up the pressure as required (often 1 bar but check the instructions).
1. With warm water in the radiator, switch off the Central Heating system.
2. Fit a bleed key onto the bleed valve (this is usually at the top at one end of the radiator - on some designs of radiator, it may be at the back).
3. Loosely wrap a piece of old cloth around the key to catch any expelled water.
4. Open the bleed valve by turning the bleed a 1/2 turn anti clockwise - hissing of air being expelled will normally be heard.
5. When water starts to dribble out of the valve, close the valve by turning the key a 1/2 turn clockwise. DO NOT OVER TIGHTEN.
6. If the Central Heating system is a sealed system, check the pressure and, if necessary, top up the pressure as required (often 1 bar but check the instructions).
posted by Colm at
4:49 AM
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