Have I bled system incorrectly ?

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AndyA
Junior Member

Joined: 23 Aug 2007
Posts: 25

Posted: Sun Dec 02, 2007 11:53 am Post subject: Have I bled system incorrectly ?

Ref this thread.
http://www.ultimatehandyman.co.uk/forum1/ideal-elan-ii-kettling-and-banging-badly-t5881.html
When I refilled the system I turned the heating on before starting to bleed the radiators, should I have bled them cold at first, then turned heating on and re bled when warm ?

AndyA
Junior Member

Joined: 23 Aug 2007
Posts: 25

Posted: Sun Dec 02, 2007 11:55 am Post subject:

I'm wondering if I might have introduced air into the system ?

Hinton Heating
Gas/Heating Expert

Joined: 16 Jan 2006
Posts: 4296
Location: Bournemouth

Posted: Sun Dec 02, 2007 11:58 am Post subject:

you should bled the rads when the timer is off, so pump is not in operation.

doesn;t matter if hot or cold.
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AndyA
Junior Member

Joined: 23 Aug 2007
Posts: 25

Posted: Sun Dec 02, 2007 11:59 am Post subject:

Thanks Hinton, I think I'll empty and refill then bleed correctly this time. Bang Head

Hoovie
Devon DIYer

Joined: 27 Jul 2007
Posts: 8036
Location: East Devon

Posted: Sun Dec 02, 2007 12:01 pm Post subject:

I'll add one comment - do it cold (or cooled down a bit) and you won't get scalding hot water coming out at you once the air is gone! Embarassed

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AndyA
Junior Member

Joined: 23 Aug 2007
Posts: 25

Posted: Sun Dec 02, 2007 12:03 pm Post subject:

Thanks, I did try and bleed the rads a couple of days ago but they all seemed fine, it's just that sometimes I can hear vibration in one of the pipes that runs under one of the bedroom floorboards, I wondered if it might be air ?

Hinton Heating
Gas/Heating Expert

Joined: 16 Jan 2006
Posts: 4296
Location: Bournemouth

Posted: Sun Dec 02, 2007 12:04 pm Post subject:

NO NO NO

dont keep emptying your system!

just turn it off and bleed it.. :grin:
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AndyA
Junior Member

Joined: 23 Aug 2007
Posts: 25

Posted: Sun Dec 02, 2007 12:07 pm Post subject:

OK I'll let it cool down then try and bleed it again, I suspect that I won't get lucky and find air . . . but it's worth a go. :grin:

Thanks again for the advice. Thumbright

Hinton Heating
Gas/Heating Expert

Joined: 16 Jan 2006
Posts: 4296
Location: Bournemouth

Posted: Sun Dec 02, 2007 12:11 pm Post subject:

as i said before, the more you drain it, the more limescale you add.

also it may take a while to settle after refilling..
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AndyA
Junior Member

Joined: 23 Aug 2007
Posts: 25

Posted: Sun Dec 02, 2007 12:13 pm Post subject:

Hinton Heating wrote:

as i said before, the more you drain it, the more limescale you add.

Got it, I hadn't considered that until you mentioned it. Thanks very much.

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