flue not to standard

[Steve]

on our british gas yearly safety inspection, the reports show the flue of our boiler is not to current standard. It was when it was fitted. It is the large square type.

It is approx. 7 inches from vertical soil stack,
5 inches below horizontal bath waste pipe (corroded heat deflector here), and about 6 inches diagonally from a window (2 feet from a window that opens).

What's changed recently in the gas regs (if there is such a thing)? any ideas? Which part of the above is "not to standard" but was 15 years ago? If we got a newer boiler with a smaller flue, would it be "to standard" then?

Would BG install a new boiler here, if it meant the flue was still not to standard?

just curious

 

[chrishutt]

If some part of an installation is classed as "not to current standards" it does not pose any significant safety risk and you are not obliged to do anything about it.

The British Standard (not gas regs) for balanced flue terminals has changed recently, requiring greater clearances to openings, etc. A new boiler would probably have a fanned flue which would not require as much clearance as a balanced flue. But don't be pressurised by BG into having a new boiler if you don't really want one.

 

[Steve]

If some part of an installation is classed as "not to current standards" it does not pose any significant safety risk and you are not obliged to do anything about it.

The British Standard (not gas regs) for balanced flue terminals has changed recently, requiring greater clearances to openings, etc. A new boiler would probably have a fanned flue which would not require as much clearance as a balanced flue. But don't be pressurised by BG into having a new boiler if you don't really want one.

oh, they aint pressurising us, they didn't even say anything about it until i mentioned it when i read the report. i just wondered if BG would install a new boiler in the same place, when the time came to replace it in a few years. point taken about fanned flues. do all new boilers have fanned flues? how does a balanced flue work?

 

[chrishutt]

do all new boilers have fanned flues? how does a balanced flue work?

Have a look in the sticky topic definitions - there's some stuff about flue types.