2007-12-24 01:38:30 · 13 answers · asked by klipdriftlover 1 in Home & Garden ➔ Do It Yourself (DIY)
I asked a similar question a few months back and got a truly excellent and correct answer from a Heating Engineer of many years experience. Here's a link to it http://uk.answers.yahoo.com/question/index;_ylt=ApikDdSvMVMBa4UH.hoHFmYhBgx.;_ylv=3?qid=20071015080457AAZIeDX
Merry Christmas. x
2007-12-24 01:47:48 · answer #1 · answered by Anonymous · 2⤊ 0⤋
1
2017-01-22 04:45:06 · answer #2 · answered by ? 4 · 0⤊ 0⤋
This Site Might Help You.
RE:
Does the boiler have to be switched off when I bleed radiators and how long should it normally take per rad?
2015-08-10 20:12:25 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Bleeding Radiators
2016-10-02 03:45:19 · answer #4 · answered by marceau 4 · 0⤊ 0⤋
The boiler does not have to be switched off.It should only take a couple of minutes per radiator, depending on the amount of air.When bleeding turn the srew gently ontil air stops coming out, be carefull not to turn it so far that it comes all the way out, as you will have difficulty getting it back in with water hissing everywhere.Its best to start upstairs (at highest rad) If you have to bleed very often in a season check as you may have a leak.
2007-12-24 05:25:56 · answer #5 · answered by Anonymous · 1⤊ 1⤋
The boiler does not have to be switched of but it is better to bleed your radiators cold with the pump off each radiator should take only a few seconds .I you need to bleed your radiators regularly then that indicates problem with you system.
2007-12-24 02:00:57 · answer #6 · answered by barney 4 · 2⤊ 0⤋
Your boiler should be turned on and the radiators hot when you open the radiator bleed screw using a radiator key. Let any air out and when water starts to come out retighten the bleed screw. This should take from nothing to about 20 seconds per radiator. ( it depends on how much air is in them)
2007-12-24 10:03:02 · answer #7 · answered by DAVID H 2 · 0⤊ 2⤋
K.B`s answer is spot on. Bleed the radiators until the water contains no more air, it is rather obvious by sight and sound when this occurs. It should only take a minute or two for each radiator. Good luck.
2007-12-24 04:21:24 · answer #8 · answered by Robert Abuse 7 · 1⤊ 0⤋
KB obviously has it in one, even giving us the address.
I would like to give my half-crown's worth........... Get inhibiting fluid Fernox or Sentinel added to the system to prevent a recurrence.
In radiator systems there is a slight electrical voltage produced when there are different metals in a liquid, which corrode radiators. When the water is made alkaline this STOPS such action. Corrosion produces gas which depresses the level in the radiators, and the " air"has to be let out.
(TO " SU" I wonder if this is a mutual admiration society .)
2007-12-24 06:24:27 · answer #9 · answered by xenon 6 · 1⤊ 0⤋
Boiler does not need to be off, each rad should take only seconds to bleed.
2007-12-24 01:42:36 · answer #10 · answered by Kaz 6 · 1⤊ 1⤋