On Fri, 2 Dec 2005 13:36:53 -0000, "Vass"
wrote:

|
| "fred" wrote in message ...
| What is the flue type? Conventional, room sealed (balanced). Flue
| location, exposed, between 2 buildings?
|
| the boiler is in the airing cupboard at the top of the stairs (1st floor)
| the flue goes horizontally straight out the wall behind the boiler
| on the gable end of the house, no other buildings within 60 feet.

If it is wind, the problem should only occur with certain wind directions.
Turbulence means that the wind direction at the flue may be massively
different from general wind direction, so the *local* wind may blow
directly into the flue when the general wind is from the other side of the
house :-(
--
Dave Fawthrop dave hyphenologist co uk Sick of Premium SMS scams,
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