WESTFIRE · WF
33
· WF
34
WESTFIRE · WF
33
· WF
34
6
7
stOVe Per FOr Mance & testing
Westfire UNIQ 33 & 34 have been approved in accordance with EN 13240.
Pr eparatory wor k 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 (175cm2)
iMPOr tant : When installing the uniQ 33 & 34 wood stoves remove steel retaining bar across flue exit.
remove bolts and take out bar replace and bolt cast onto collar.
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.
Minimum draft: UNIQ 33, 34 stove has been tested with a draft of 12 Pa. Maximum draft 25 Pa.
Flue gas flow 6.0 g/sec.
Flue gas temperature 267°C. approximately 12 Pa.
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 Build-
ing 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 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 instal-
lation 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 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.
uk
stove model
Weight
nominal heat output
Wood
smokeless fuels
UNIQ 33
118 kg
6.1 KW
N/A
UNIQ 34
124 kg
6.1 KW
N/A
uk
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.
distance to combustible materials
Combustible materials 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 combustible materials due account must be
taken of the guidance on the separation of combustible material given in Building Regulations Approved Docu-
ment J and also in these stove instructions.
Hearth
The hearth should be able to accommodate the weight of the stove and its chimney if the chimney is not inde-
pendently supported.
The Westfire UNIQ 33, 34 wood stove has been tested and is suitable to be installed on a 12mm non combustible
plate such as Westfire 12mm glass plates or 20mm slate plates. Installation of all hearths should comply in size
and construction so that it is in accordance with the provisions of the current Building Regulations Approved Docu-
ment J.
The clearance distances to combustible material beneath, surrounding or upon the hearth and walls adjacent to
the hearth should comply with the guidance on the separation of combustible material given in Building Regula-
tions Approved Document J and also in these stove instructions.
If the stove is to be installed on a wooden floor, it must be covered with a non-combustible material at least
12mm thick, in accordance with Building Regulations Approved Document J, to a distance of 30 cm in front of the
stove and 15 cm to each side measuring from the door of the combustion chamber.
combustion air supply
In order for the stove to perform efficiently and safely there should be an adequate air supply into the room in
which the stove is installed to provide combustion air. This is particularly necessary if the room is double-glazed
or a flue draught stabiliser is operating in the same room as the appliance. The provision of air supply to the
stove must be in accordance with current Building Regulations Approved Document J. An opening window is not
appropriate for this purpose. Air inlets must be positioned in such a way that they cannot be blocked. An air inlet
may be a vent (the vent must be open and the capacity of the vent sufficient when the stove is lit) or a fresh air
system linked to the stove.
The UNIQ 33 & 34 are available with a closed air supply collar (additional item) this enables the stove to take
combustion air directly from outside with a 100 mm pipe from the stove.
There are no European rules regarding the minimum distance to non-flammable walls, Westfire recommend leav-
ing a gap of at least 10 cm behind and to sides of stove.
uniQ 33,34
Distance to combustible materials rear
200 mm
Distance to combustible materials side
350 mm
Distances to flammable materials/furnitures
1000 mm
