"Dave Liquorice" wrote in message
. 1...
On Thu, 6 Nov 2003 22:24:53 -0000, MR wrote:

Now I'm wondering from the posts whether the loose tubing in Pic 2
could be posing a problem as this is not secured fully
flush/air-tight) to the hole in the loft.

That round hole leads up to a chimney/external vent I take it and
you
can feel an up draft at that round opening? The other end of the
pipe
then goes to the rectangular hole in your earlier photograph.

All these joints need to be gas tight otherwise the flue gases will
seep out. Flue gases aren't the best things for ones health...

There looks plenty of room in the box flue I'd be tempted to take
that
single skin flexable liner right down to a register plate above the
fire or even to the flue outlet of the fire (if it has one) with
just
the single joint into the round hole. In fact I'd probably
investigate
getting the liner right up to the pot as well.


In my system, the flue is similar to a breeze block, with the centre
piece missing, and would be nowhere near wide enough to take the
flexible pipe.

I have just had another look at the original picture, and I do not
think the concrete is a blockage, merely an infill, at the side of the
block built flue.
--
Gavin Gillespie
Giltbrook
Nottingham UK