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Ed Sirett
 
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Default Gas boiler problem - excessive heat, soot and yellow flame

On Sat, 18 Feb 2006 19:47:47 +0000, Michael Pacey wrote:

Hi,

I have a problem with my ancient Ideal Concord W gas boiler (says WCF
on the front). I'm pretty sure it is of the combi-boiler type.

It was working fine until recently I noticed the boiler itself is
giving off excessive heat - it is scalding to the touch. Then I noticed
that the wall above the boiler is quite sooty - not sure if this is new
or not, but I didn't notice it before. The flame seems to be burning
yellow, where I would expect clean blue, and it is lapping up in front
of the internal guard between the heat exchange and the boiler cover.
I think this is what is causing the heat coming off the boiler.

Is this something I can adjust myself or will I need to call in an
engineer? The bad news is I don't have the service manual for the
boiler, it came with my flat.

Thanks in advance for any advice.


As others have already said this boiler is Dangerous. Any
professional coming across it in its current state WILL condemn it.
The fact that the casing is also getting hot almost certainly means that
the flue and/or heat exchanger is blocked. Maybe the flue liner has
collapsed ?

Just one point - this boiler was designed and installed long before combi
boilers were around (in the UK at least). It comes from the Concorde era!

Frankly the cost of putting this right - and being really sure it's right
- should probably go straight towards the new boiler.

Have a look at the BoilerChoice FAQ below.

-
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html