Instruction manual

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- Chimney Connection - Flue Diameter 150mm (160cm2)
In order for the stove to perform satisfactorily the chimney height must be sufficient to ensure an adequate
draught so as to clear the products of combustion and prevent smoke problems into the room.
WF32/UNIQ32 INSET
WF23/UNIQ23 INSET
Tested Draft
12pa
12pa
Max Draft
25pa
25pa
Flue gas temperature
243°c
281° c
Flue gas flow
4.6g/sec
5.2 g/sec
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.
Installing the appliance
Each Installation is different for every property and it is not possible to give detailing for every installation.
The Installation must comply with Building regulations and follow best practice construction methods.
Typical fireplace constructions have a supporting lintel. Do not remove lintel without support of the main
building structure of the building. Do not use the appliance to support the structure.
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 160 mm x 160 mm. Remedial action should be taken, if required,
seeking expert advice. 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.
NOTE- When installing the Uniq32/WF32 or Uniq 23/WF23 inset in to a fire place opening with
a traditional flue we recommend installation of the appliance with flue liner for optimum
performance.
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 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.
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 doors must be provided for sweeping the chimney and
connecting flue pipe