Prefactory Work and Safety Checks
There must not be an extractor fan fitted in the same room as the stove as this can cause the
stove to emit fumes into the room.
Chimney
NOTE: A chimney height of not less than 4.5 metres measured vertically from the outlet of the
stove to the top of the chimney should be satisfactory. Alternatively the calculation procedure
given in BS 5854:1980 may be used as the basis for deciding whether a particular chimney de-
sign will provide sufficient draught.
If installation is into an existing chimney then it must be sound and free from cracks or other
faults which might allow fumes into the property.
Any existing chimney must be clear of obstruction and have been swept clean immediately be-
fore installation of the stove. If the stove is fitted in place of an open fire then the chimney
should be swept one month after installation to clear any soot falls which may have occurred
due to the difference in combustion between the stove and the open fire.
If there is no existing chimney then either a prefabricated block chimney in accordance with
Building Regulations Approved Document J or a twin walled insulated stainless steel flue to
BS 4543 can be used. These chimneys must be fitted in accordance with the manufacturer’s
instructions and Building Regulations.
A single wall metal fluepipe is suitable for connecting the stove to the chimney but is not suit-
able for using for the complete chimney. The chimney must have a minimum diameter of 150
mm and its dimension should be not less than the size of the outlet spigot of the stove.
Any bend in the chimney or connecting fluepipe should not exceed 45°. 90° bends are not per-
mitted.
Combustible material should not be located where the heat dissipating through the walls of
fireplaces or flues could ignite it. Therefore when installing the stove in the presence of com-
bustible materials due account must be taken of the guidance on the separation of combusti-
ble material given in Building Regulations Approved Document J and also in the stove installa-
tion instructions.
If it is found that there is excessive draught in the chimney then a draught stabiliser should be
fitted.
The chimney can be swept through the stove if the stove is connected via the top flue outlet.
When installing via the rear flue outlet adequate provision e.g. easily accessible soot door or
doors must be provided for sweeping the chimney and connecting fluepipe. It may also be nec-
essary to provide additional sweeping access when fluing through a register plate.
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