"Ed Sirett" wrote in message
news
On Mon, 30 Aug 2004 12:06:47 +0100, IMM wrote:



Plumbers are good for drains an gutters. Heating should be left to
heating
engineers. The maintenance of a condensing boiler is no different to a
regular system boiler.

This man calls himself the boilerdoc. What a cheek.


Since when do you wash down ordinary heat exchangers?
Since when did you do this?

????

Burners on condening boilers are invariable
of the forced premix type.
Burners on non-condensing domestic boilers
are invariable atmospheric.

Not always the case. A pre-mix is not complicated.,but is for dumb plumbers.