With ref. to 'bleeding' the radiators, I remember someone saying to do it properly you have to do it in a particular order but can't remember if I was told nearest to the tank or furthest away from the tank first, which is it please. Also when I have bled one (which we have the problem with) all the air comes out, the radiator gets hot, but then only lasts about a day and is half cold again, will doing them in the right order cure this? I do understand that the pump has to be off before you start, is this correct?
2006-10-24 04:37:15 · 4 answers · asked by Anonymous in Home & Garden ➔ Maintenance & Repairs
Whether your system is conventional or a pressurised combi, it makes not the slightest difference which order, as you will only be letting air out from the top section of the radiator, different from initially airing a brand new system that is full of air. Just make sure that the pump is off and if it's a combi you will have to put the pressure back up again after bleeding.
Air could be getting drawn in at a slightly loose connection, or the pump could be be reversed and/or pumping over the expansion tank causing aeration which gets drawn back in again, You could try slowing the pump down if it's at top speed, This is for a system where you have a header tank in your loft.
2006-10-24 04:54:32 · answer #1 · answered by jayktee96 7 · 0⤊ 0⤋
Turn of the heating. Start with the downstairs furthest from the header tank and work your way in. Repeat for upstairs.
Non-pressurised systems often suffer from air accumulation in one radiator - normally the one approximately above the boiler. When the pump starts, water is pumped through the expansion pipe, runs back to the header tank and dissolves air. It tend to be separated by the boiler and rises to the nearest radiator above.
The excess air in the system aids corrosion and reduces radiator life.
Conversion to a pressurised system will solve the problem and make the heating run more efficiently. Cost is about £250 - £400 depending on existing design.
2006-10-24 04:54:09 · answer #2 · answered by Clive 6 · 0⤊ 0⤋
You start nearest the tank in order to get the best outcome. You should bled them when the system is off and the radiators are cold. The problem of reoccuring air in your one radiator should cease after bleeding in the correct order. If your tank is upstairs always start there and do ALL the upstairs ones first.
2006-10-24 04:46:44 · answer #3 · answered by stuart k 1 · 0⤊ 1⤋
I find that bleading the rads nearest the the boiler out then turn on the heating and repeating the process again solvs the problem.
If you still experiance the same problem, you should call a professional plumber.
Hope this helps
2006-10-24 04:42:11 · answer #4 · answered by tsmoreland324 2 · 0⤊ 0⤋