"Nick Brooks" wrote in message
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IMM wrote:
"Nick Brooks" wrote in message
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IMM wrote:

"James" wrote in message
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Hi

I've just had installed a Worcester Bosch condensing boiler system
(R29

HE).


I understand that the pluming is common (inevitable?) with condensing
boilers. There is a fair amount of pluming with the R29 HE. I've been

told

by a WB engineer that this will always occur (it'll be worse the
colder

it

is) and indicates that the boiler is working well.

The flue cannot be moved. Is there a way a way of lessening the visual
(cosmetic) aspect of the pluming so that it doesn't look like a
smoking
chimney? I'm not suggesting that the emissions are lessened. I'm

thinking,

for example, of putting something around the flue.

I understand that the emissions are more benign that conventional

boilers

(although, ironically, the pluming makes them seem otherwise).
However,

what


sort of damage can the emissions do to a brick wall, double glazing,
anything else?


If you don't like the nuisance plume, then the only alternative is to

have

the boilers flue fitted through the roof, as they do in Germany. Get

the

boiler moved to the loft.



Don't move the boiler to the loft. One of the advantages of condensing
boilers is that the exhaust gasses are not hot so you can use long
plastic flues meaning the boiler doesn't have to be sited on an external
wall.


It depends on the boiler. The W-B is not one, it will have to be moved.


According to the Worcester Bosch Installation manual available here
http://www.worcester-bosch.co.uk/framest7.htm

" The standard Concentric flue system provides for a horizontal length
of upto 4m.

Not high enough to reach the roof and will be ugly outside the house.

Systems are available to give a maximum horizontal lenght of 13m. A
vertical flue system upto a height of 15 meters is available"

These are two tube setups. Once again very ugly on the outsiude of a house.

None of these are plastic. The Keston is the best for long plastic runs.