English
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H07024510 / DT2000575 - Rev. 00
PREPARATORY WORK AND SAFETY CHECKS
IMPORTANT WARNING
This stove must not be installed into a chimney that serves any other heating appliance.
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
In order for the stove to perform satisfactorily the chimney height must be sufficient to ensure an adequate
draught of approximately 15 Pa so as to clear the products of combustion and prevent smoke problems
into the room.
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 design will provide
sufficient draught.
The outlet from the chimney should be above the roof of the building in accordance with the provisions
of Building Regulations Approved Document J.
If installation is into an existing chimney then it must be sound and have no cracks or other faults which
might allow fumes into the house. Older properties, especially, may have chimney faults or the cross
section may be too large i.e. more than 230 mm x 230 mm. Remedial action should be taken, if required,
seeking expert advice, if necessary. If it is found necessary to line the chimney then a flue liner suitable
for solid fuel must be used in accordance with Building Regulations Approved Document J.
Any existing chimney must be clear of obstruction and have been swept clean immediately before
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 EN 1856 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 suitable for
using for the complete chimney. The chimney and connecting fluepipe must have a minimum diameter
of 150 mm and its dimension should be not less than the size of the outlet socket of the stove.
Any bend in the chimney or connecting fluepipe should not exceed 45°. 90° bends should not be used.
Combustible material should not be located where the heat dissipating through the walls of fireboxes or
flues could ignite it. Therefore when installing the stove in the presence of combustible materials due
account must be taken of the guidance on the separation of combustible material given in Building
Regulations Approved Document J and also in these stove instructions.
If it is found that there is excessive draught in the chimney then either an adjustable flue damper or
alternatively a draught stabiliser should be fitted. The adjustable flue damper should not close off the
flue entirely but should in its closed position leave a minimum continuous opening free area of at least
20 % of the total cross sectional area of the flue or fluepipe.
Adequate provision e.g. easily accessible soot door or access doors, must be provided for sweeping the chimney
and connecting fluepipe, also to permit visual checks on the integrity of the flue when the appliance is serviced.
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