"Earl Kella" wrote in message
...
(re-post; last message sent with last years date)

My boiler which I installed myself (Baxi Potterton Cmbi 130HE) is showing
signs of low gas pressure after working fine for 1 year. Occasional
ignition failure (ie once a month) and fairly frequent very loud flame
ignition (farting type noise).

I'm going to service it thoroughly to see if a good clean will help, but I
would like to know how big a job it is to increase the gas pressure to it
if
this turns out to be the case.

As it has been working fine for 1 year, is it likely that the gas pressure
from the supply mains has dropped since installation? I have heard that
gas
pressure can be increased fairly simply by removing metal weights
somewhere
near the gas meter - is this the case?

I will of course get a corgi bloke to come in and do it but is it likely
to
be an expensive job? I'm just off out to get a gas pressure measuring
thing
I've seen in B&Q.....


The gas pressure to your house is controlled by the meter governor which is
the property of the gas supplier and is not to be interfered with by you or
by anyone other than the gas supplier/transporter. If your gas pressure is
steadily getting lower it is indicative of perhaps a blockage building up in
the governor filter (if there is one) or a problem in the supply main. You
may also have a problem in the sizing of your house interior pipework.
Whatever the actual problem you can connect your manometer to the meter test
point and measure the governed pressure under load. This should be about
21millibar.
If the pressure is significantly lower then your course of action is to
contact the supplier who's telephone droid will recite the usual litany
about turning off the supply and opening all doors and windows etc before
sending a man in a van along to sort it out.
Don't start messing about with any of the gas system unless you have read Ed
Sirrets gas FAQ "AND" you are competent to do so. (Your comment about "I've
heard that--------" makes me wonder if you really are)