Back boiler vibration


Postby Spinner » Fri Feb 01, 2008 6:54 pm

Hello there! Anyone got any ideas how to cure my central heating noise? Turn it on in the morning and it's fine for the first ten minutes. Then a vibration from the system starts to cause the expansion pipe to knock. After about half an hour the noise gradually reduces but doesn't completely disappear.
I thought it could be kettling, but as the noise reduces rather than gets worse and I've put some additive in to cure the kettling effect, then I think not.

Any guidance would be greatly appreciated

Thanks

Spinner
Spinner
Rank: Labourer
Progress to next rank:
25%
Posts: 2
Joined: Fri Feb 01, 2008 6:39 pm

Sponsor

Simply Build It

Postby htg engineer » Sun Feb 03, 2008 6:01 pm

It does sound like it could be kettling, depending on how bad the build up of limescale is - the descalers very rarely solve the problem.

Whats' the boiler make and model ?
htg engineer
Rank: Project Manager
Posts: 3224
Joined: Tue May 22, 2007 5:22 pm

Postby roger196 » Sun Feb 03, 2008 7:24 pm

Sounds like heat expansion of the pipes. Check that pipes are clipped at regular intervals. Look for a pipe that is vibrating, does noise disappear when you hold it, whcih may need an extra clip.
roger196
Rank: Ganger
Progress to next rank:
22.7%
Posts: 84
Joined: Mon Nov 05, 2007 7:51 pm

Postby Spinner » Sun Feb 03, 2008 8:12 pm

Thanks for the replies,

Yes I can reduce the noise if I wedge some carboard between the wall in the airing cupboard and the expansion pipe. Or pull the pipe to one side very hard, but the noise doesn't completely disappear and you can feel the pipe wanting to vibrate. If it was just a case of resecuring the pipe work then, just holding it would make the noise go. But surely thats just trying to stop the noise, rather than curing the fault thats causing the vibration, isn't it?

The Make of the boiler is a Potterton 45 or 55.

Thanks

Spinner
Spinner
Rank: Labourer
Progress to next rank:
25%
Posts: 2
Joined: Fri Feb 01, 2008 6:39 pm

Display posts from previous
Sort by
Order by



  • DIY How to Project Guides

  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!



 


  • Related Topics