On Wed, 14 Feb 2007 14:29:59 +0000, John Rumm wrote:

wally wrote:

Our old combi boiler was replaced in December because the water
jacket
was leaking & could not be repaired [ Grant Boiler], soon after
fitting the pressure dropped again, Engineers came & found a small
leak.

Did the old boiler also have a sealed system, or was there a header tank
for it in the loft?

Converting to a sealed system can result in the heating circuit being
more highly pressurised than previously. One thing that often gives out
are old lockshield valves. Were any radiator valves replaced?

One again the pressure is dropping, i am now told itmust be a leak in
the house, probably under the floor boards & nothing to do with
them .
The problem did not exist before the new boiler was fitted

Which is to be expected on some older systems...

On top of that i have now also had an account for commissioning the
boiler, this was not done at the time of fitting.

Did you pre-agree a all in price for the work?

I strongly suspect one (or more of) the following:

Not all of their manual employees hold CORGI cards. So they send out their
registered operatives to check things over and sign off the paper work.

There was some minor part or component to the entire system which prevent
the installation being signed off until later.

They are making an excessive deal about commissioning and are using it as
a lever for more margin.

They wish to explicitly pass on the administrative costs associated with
self certification to the customer and use this mechanism.



--
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
Gas Fitting Standards Docs he http://www.makewrite.demon.co.uk/GasFittingStandards