"Steve" no.junk.mail@here wrote in message
...
Hi,

We've got a baxi bermuda 552 back boiler. We had a gas engineer visit
today to give it a service and he's issued us with an "At Risk"
notification on it. He's said the boiler needs replacing - he doesn't
supply / install boilers himself so there's no gain in him recommending
replacement (and he didn't even charge us for the abandoned service).

A new boiler is expensive - even replacing the baxi with a similar model
is 600 excluding installation - so I'd like to see if repairing it is
feasible.

The diagnosis is the burner assembly is rotten caused by combustion
chamber leaking. I've removed the boiler covers and confirmed this. In
reality the boiler seems to be very simple - Is it feasible to just
replace the chamber and the burner, or am being over simplistic? When
cold there's no water leaking - what normally causes a chamber to leak.

Advice please - It's damned cold!

Steve.


I've owned 2 Baxi Bermudas in the past - both 1960's vintage - so I don't
whether yours is the same.

Mine had cast iron heat exchangers which looked a bit like 2 chunky slabs of
chocolate - with the chunks facing each other. Each of these had 4 holes in
the corners, and were joined together by 4 manifolds - each of which had an
external connection - i.e. 2 flow + 2 return in all.

I think there were gaskets of some sort where the manifolds joined these
"chocolate blocks". If yours are leaking, it is probably at these joints,
rather than as a result of any holes right through the cast iron.

If you can get them apart, you may be able to replace the gaskets. However,
the bolts holding it all together are probably well and truly rusted in - so
it may be difficult. You can probably still get a replacement burner
assembly from a Baxi spares stockist.

Roger