3
be less than 175 cm
2
, which corre-
sponds to a diameter of 150 mm. If a
damper is fitted in the flue gas pipe,
there must always be at least 20 cm
2
of
free passage, even when the damper is
in its “closed” position. If local regula-
tions permit, two contained fireplaces
can be connected to the same chim-
ney. However, you must abide by local
regulations regarding the distance bet-
ween the two connections.
The woodburning stove must never
be connected to chimneys that are
also linked to a gasfired heater.
An efficient stove makes high demand
on chimney properties – so always
have your local chimney sweep eva-
luate your chimney.
Connection to a brick chim-
ney
Brick a thimble into the chimney and
seat the flue gas pipe in this. The thim-
ble and flue gas pipe must not penetra-
te the chimney opening itself, but must
be flush with the inside of the chimney
duct. Joins between brickwork, the
thimble and flue gas pipe must be sea-
led with fireproof material and/or bea-
ding
Connection to a steel chimney
When fitting a connection from a top-
output stove directly to a steel chim-
ney, we recommend fitting the chimney
tube inside the flue gas spigot so that
any soot and condensation drops into
the stove itself rather than collecting
on the exterior surface of the stove.
For connections to chimneys that are
run through ceilings, all national and
local regulations regarding distance to
flammable material must be followed.
It is important that the chimney is fitted
with roof support so that the top panel
of the stove is not required to bear the
entire weight of the chimney (exces-
sive weight may cause damage on or
noise from the stove).
Draft conditions
Poor draft may result in smoke being
emitted from the stove when the door
is opened. The minimum chimney draft
to ensure satisfactory combustion in
stoves of this kind is 13 PA. However,
there will still be a risk of smoke emis-
sion if the firing door is opened during
powerful firing. Flue gas temperature at
nominal output for Panorama 273 and
Panorama XL 266 is 20° C.
Flue gas mass flow rate for Panorama
is 6 g/sec and for Panorama XL 7.5g/
sec.
The chimney draft is generated by the
difference between the high tempera-
ture of the chimney and the low tem-
perature of the fresh air. The length and
insula-tion of the chimney, wind and
weather conditions also have an effect
on the ability of the chimney to gene-
rate appropriate under-pressure.
If the stove has not been used in a whi-
le, check that the chimney and stove
are not blocked with soot, bird nests,
etc., before using it.
Reduced draft can occur
when:
•
The difference in temperature is too
small – due to insufficient chimney
insulation, for example.
•
The outdoor temperature is too
high – in summer, for example.
•
No wind is blowing.
•
The chimney is too low and shel-
tered.
•
The chimney contains false air.
•
The chimney and flue gas pipe are
blocked.
•
The house is too airtight (i.e. when
there is an insufficient supply of
