1.8 Connecting to a steel chimney
If your installation involves taking the chimney straight up and through the ceiling, you must
comply with National, Local Building Regulations or flue manufacturers instructions concern-
ing clearances to combustible materials such as walls, floor joists and ceilings. The joint be-
tween the stove flue collar and the stovepipe must also be sealed using the glass fibre rope
provided. It is important that the insulated flue system is properly supported both at ceiling
level and at roof level.
THE STOVE MUST NOT BEAR THE WEIGHT OF THE CHIMNEY SYSTEM (See chimney manu-
facturer’s instructions). Excessive weight on the stove will inhibit expansion and could lead to
damage of the stove top. Damage caused to the stove in this way would not be covered by the
manufacturers guarantee.
If a chimney fire should occur as a result of incorrect operation of the stove or prolonged use
of wet fuel, close the vents completely and contact the fire brigade.
1.9 Draught
If smoke comes out of the stove when the fire door is opened, it will be due to the poor
draught in the chimney. This type of stove requires at least 12 PA of chimney draught to
achieve satisfactory combustion and to prevent smoke from escaping. Smoke may, however,
escape in any event if the stove door is opened during vigorous firing, so this should be
avoided.
The flue gas temperature at the rated output is 281°C relative to 20°C.
If in doubt, you may want to get your chimney sweep to measure the draught in the chimney.
Be aware of the following:
Discuss the cleaning options with your chimney sweep.
If there is insufficient draught in the chimney, it may be a good idea to install the
flue pipe straight up so as to minimise smoke migration in the actual combustion
chamber.
Avoid having more bends than necessary, and limit the length of the flue pipe so as
not to reduce the draught.
Fresh air supply
A wood-burning stove requires air for combustion. As a result, firing a
wood-burning stove will help create a healthy climate in your house. If the house is
very tightly sealed, and particularly if there is a cooker hood or ventilation system
in the house, it may be necessary to install an air grate in the room in which the
wood-burning stove is installed. Otherwise there may not be enough draught in the
chimney, which may result in the stove not being able to burn properly, and smoke
may come out of the stove when the fire door is opened.
If it is necessary to install air grates, they must be positioned so that they cannot be
obstructed.
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