Noisy Vaillant


Postby c928jon » Mon Dec 08, 2008 8:19 am

Hi

My Vaillant Turbomax 828E is making some very strange noises, before anything else, I'm happy to do work on the "wet" bit of heating but would ONLY use a Corgi engineer for the Gas/burner part. I'm just after some pointers to assist myself and the prospective engineer if it doesnt turn out to be simple.

The boiler is absolutley fine on hot water and when heating is warm, however when it is warming up it makes a noise that can best be desribed as snoring.

You can hear the gas valve open as part of the modulating sequence, the burner roars then subsides, i'm pretty sure it supposed to do this. When it is roaring, (max burn?) there is a vibration noise that almost sounds like air being drawn in. This noise cycles with the modulating burner, on for 5seconds off for 9 and it dies away slowly in between.

Things i've checked. Flue termination and connections, all open and clear, radiators bled and bled and bled, pressure ok and all rads doing what they should, expansion tank pressure ok, boiler drained and flushed, boiler pump bled, boiler auto vent removed cleaned and checked.

The boiler was moved 2 years ago by a corgi engineer who is now retired, after a phone call he confirms that gas pressures were checked at this time and the only modification was shortening the vertical exit flue by 12 inches.

As a potential red herring, the gas supply main in our area is being renewed at the moment.

Gas supply pipe is 3m from the meter, 22mm with a 10cm 15mm tail, also feeding gas hob. Flue is 1.2m long with a top hat.

Anyone got ant ideas? Is this kettling? It seems too regular for that?

Thanks John
c928jon
Rank: Labourer
Progress to next rank:
25%
Posts: 2
Joined: Mon Dec 08, 2008 7:54 am

Sponsor

Simply Build It

Postby Steve the gas » Tue Dec 09, 2008 6:17 am

Hi,

My gut feeling is the gas valve solenoid,get your RGI to confirm?

Hth
Steve the gas
Rank: Site Agent
Progress to next rank:
56%
Posts: 780
Joined: Sun May 04, 2008 7:07 am

Postby htg engineer » Tue Dec 09, 2008 6:36 pm

You need an RGI - the noise could be many things.

Htg
htg engineer
Rank: Project Manager
Posts: 3224
Joined: Tue May 22, 2007 5:22 pm

Postby c928jon » Tue Dec 09, 2008 7:29 pm

Agreed, anyone know a short friendly RGI in the Coventry area, ohh and slim too cos they wont thank me when the see where it is! !00% safe and accesable though :lol:
c928jon
Rank: Labourer
Progress to next rank:
25%
Posts: 2
Joined: Mon Dec 08, 2008 7:54 am

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