In message , "Dave Plowman (News)"
writes
In article ,
Stephen wrote:
I've suiggested that to various gas engineers who also fit boilers etc
over the last few years and they will not touch a job where someone
they don't know has fitted the central heating system, tanks, and the
boiler, leaving just the gas connection too.....

Apparently its to do with who to blame if something does not work.....

Who would expect someone who merely connected the gas supply to be
responsible for the rest of the system? Unless paid a fee for
commissioning the whole thing.

Not only "the system" but all other gas appliances in the house


--
geoff