Woodburners & flues

[harry]

That is unusually small. 8" is normal.

[harry]

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

[Big Les Wade]

[e-mail] 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?

[news]

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

[harry]

I said. "quote"

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

[geoff]

Its still incorrect

[Stephen H]

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

[Jim K]

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