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Alison
Joined: 12 Jul 2004
Posts: 1
Location: Lancashire
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 Posted: Mon Jul 12, 2004 11:59 am Post subject: New boiler - banging radiators |
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I recently had a new Halstead combi installed and since then the radiators have started to vibrate badly and bang when the heating has been on for about 15 minuntes. This can be stopped temporarilty by turning the offending radiators down, but comes back after another few minutes
Can anyone advise what has happened? |
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vince knight
Moderator
Joined: 04 Mar 2004
Posts: 1343
Location: Essex/East London
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| Posted: Tue Jul 13, 2004 6:51 am Post subject: |
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Sounds like an air lock in the system. Bleed the rads from cold to remove air and if it is a sealed systerm make sure the pressure is at about 1-1.5bar when cold.
Vince |
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geordie01
Joined: 10 May 2004
Posts: 29
Location: north east
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| Posted: Thu Jul 15, 2004 9:17 am Post subject: |
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| do you have thermostatic rad valves fitted if so the flow through them could have been reversed when new boiler was fitted |
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thescruff
Moderator
Joined: 03 May 2003
Posts: 4751
Location: Bath
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| Posted: Fri Jul 16, 2004 7:13 pm Post subject: |
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Yep;
Agree with Geordie01, thermostatic valves have the wrong flow.
Also a not adjusted, or not fitted auto-byepass valve will cause the problem.
More info on the system please.
But get the installer back to sort it under warrantee.
scruff |
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