Woodburners & flues

They need a fan because the flue gases have no buoyancy, they are so cool, especially in condensing boilers.

snipped-for-privacy@sylva.icuklive.co.uk posted

The October 2010 edition of part J (on p.30, Table 2 "Size of flues in chimneys") says a 125 mm flue is acceptable for closed appliances which meet the requirements of the Clean Air Act when burning bituminous coal or wood. I assume this means DEFRA approved stoves?

That's good, my 2002 version only allows for bitumous coal. I've downloaded the 2010 edition and you are right, a 125mm flue is allowed for a woodstove up to 20kW if it meets the requirements of the clean air act.

AJH

I said. "quote"

The fan in most gas gas boilers is working on a mixture of gas and air. "Unquote" Anything elsewasnot saidby me.

Its still incorrect

Doing one or the other is very important if you have buildings insurance...

If you have a fire, the insurance company can use the lack of appropriate certification from either HETAS or building control approval to refuse your claim.

I recently got a wood burner. When I looked into the installation costs for both routes, there was not a lot of difference in the costs.

Wood burners are heavy, and need 2 men/women to lift them. So in the end I paid the extra 10 quid for a HETAS man rather than self install & council building regs for the sake of not damaging my back.

Stephen

how would they know to ask for certs?

I suspect you didn't look hard enough - what did your man charge?

larger ones can be heavy yers... haven't you got any friends?

Jim K