Renewing a flue on old boiler

[WedgeAntilles]

Please could anyone help me regarding an old Glow-worm Ultimate open flue gas boiler.

The boiler which is in extremely good condition (serviced every year from new and re-dosed with inhibitors every 3) has been condemned by B.G because the Uralite flue has failed the flue flow test and leaking out of cracks in the pipe.

The boiler is in the kitchen of a bungalow and the flue runs straight up through the loft space and terminates on a ridge tile.

B.G have said that they can no longer get the flue and the whole boiler will need to be replaced

The flue spigot is 115mm to accommodate 4" flue pipe. Looking on-line i have found that you can get 4'' twin-walled flue.

Does anyone know if this is acceptable?

 

[Agile]

I don't see any reason why not but normally the manufacturer would be asked by the Gas reg engineer who is going to do the replacement work.

But be aware your boiler is old and well overdue for replacement.

Tony

 

[gas112]

Twin wall is perfectly acceptable but you may struggle to get a ridge tile adaptor so it maybe a case of having to take it out through the tiles but your prob looking at several hundred quid which would be better spent on a new boiler to be honest but if you want it done its a straight forward job for an experienced guy who thinks nothing of doing open flues newcomers to the trade tend to sh#te themselves at the mention of open flue

 

[WedgeAntilles]

Thanks Tony
Selkirkchimneys.co.uk do a compatible system (Insta-lock Gas Vent)
Just got an email back from Glow-worm and they have given the green light

 

[WedgeAntilles]

Thanks for your response

 

[ScottishGasMan]

Twin wall open flue is still readilly available but at obscene prices usually, just make sure you get a sold quote and not an esitmate from whoevers doing the work, and remember the next time the boiler breaks down its self it may well not be repairable, and all that new flue will be wasted as it wont be any use to a new boiler