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HowToDo Question : Why is my central heating radiator stays cold ?

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PostPosted: 04 Dec 2010 14:21 
Why is my central heating radiator stays cold?
I have a wall-mounted gas boiler type CHAFFOTEAUX (celtic).
I re- road this morning (winter position).

I bled all the radiators.

All heat very well except 1 (end of network below).

On deus pipes leading to them, only one leading to the bottom of the radiator is slightly warm to radiator, but not heating radiator;
another pipe leading to the faucet (not thermenstatique) (which opens and closes properly) is completely cold.

What can I do?

Pending thank you in advance

jm
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PostPosted: 04 Dec 2010 16:24 
Hello
Your heater may be contained in the air to check the drain.
To bleed a radiator , open the drain plug with 2 or 3 laps, so old brass knob or screw so new it is at the top opposite the radiator valve, letting air out until the water reaches the circuit , then check the water pressure on the boiler 1.5 bar, if it is too low to fill the refill valve beneath the boiler, help you need to record, the zone is often indicated on the gauge with a pressure not to exceed. If the radiator does not heat it is possible that the sludge present in the circuit slows the flow of water, being placed at the bottom end of the tour you will see when purging the color of water.
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PostPosted: 04 Dec 2010 17:25 
Cette réponse a aidé l'auteur du sujet.
Hello
I saw your message you have already drained the radiator, check to see if there is not as steam traps on top of circuit, the water was clear or dark at the time of the purge ?
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