On Fri, 25 May 2007 19:51:22 +0100, Harry Bloomfield wrote:

Ed Sirett formulated on Friday :
On Fri, 25 May 2007 18:12:19 +0100, Harry Bloomfield wrote:

Installed at the moment is a standard none condensing boiler, on a
kitchen wall and working absolutely fine - supplying heating and hot
water via a tank, with the usual header in the loft.

In my absence an installer has been along to price up for replacing
this boiler with a new condensing type, without specifying make, model
or even the type - though I would assume the type will be 'regular'.

As part of the installation the installer has quoted for the complete
replacement of the gas supply pipe all the way back to the meter, with
no explanation as to why this might be needed or necessary. Obviously I
am rather puzzled, as the existing pipe is not that old, put in during
the last major refit about twenty years ago and I would have thought
perfectly adequate. From memory it is 22mm from the meter to the corner
where the boiler plus cooker are, then drops down to 15mm for the final
1m or so to the actual existing boiler.

Mentioned by the surveyor (all second hand information) was the running
of the new pipe around the outside of the house.

Now before I start shouting expletives at the surveyor down the phone,
I would appreciate some comments first on the above.


Take a look at the FAQs below. Why are you wanting to change the boiler?

Well thanks for that, but no answer I could find in the FAQ's.

Why, well because our boiler is getting on a bit in years and is
perhaps due for replacement with something more efficient.


So all the stuff about there only being 1mbar drop in gas pressure in the
installation pipes didn't have any bearing on your situation?

The regs are much more tightly enforced that they used to be. Modern
boilers can be less tolerant of poor gas supply pressure.


--
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