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WESTFIRE · WF26 WF27 WF28
STOVE PERFORMANCE & TESTING
Westfire UNIQ 26, 27 & 28 have been approved in accordance with EN 13240.
Stove model
Weight
UNIQ 26
105 kg
UNIQ 27
110 kg
UNIQ 28
120 kg
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 125 mm
IMPORTANT: Once the stove is unpacked and checked it is necessary to remove the central bar from the flue collar
of the stove before installation. To remove unbolt collar remove bar and replace 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: Westfire UNIQ 26, 27, 28 stove has been tested with a draft of 12 Pa. Maximum draft 25 Pa.
Flue gas flow 4.4 g/sec.
Flue gas temperature 263°C. approximately 12 Pa.
NOTE: 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. Westfire Aps recommend the use of a solid fuel flue lining
system for all installation into existing chimneys. All chimney systems must be used in accordance with Building
Regulations Approved Document J.
If there is no existing chimney then either a prefabricated block chimney in accordance with Building Regula-
tions Approved Document J or a twin walled insulated stainless steel flue to BS 1856-1. These chimneys must be
fitted in accordance with the manufacturer's instructions and Building Regulations. A single wall metal flue pipe is
suitable for connecting the stove to the chimney but is not suitable for using for the complete chimney. The con-
necting flue pipe must have a minimum diameter of 125 mm and its dimension should be not less than the size
of the outlet socket of the stove. Registered smoke exempt models burning wood only can be installed on flue of
125mm throughout. Any bend in the chimney or connecting flue pipe should not exceed 45°. 90-degree bends
should not be used other than within 150 mm of stove rear flue outlet.
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 BS5854:1980 may be used as the
basis for deciding whether a particular chimney design will provide sufficient draught.
If it is found that there is excessive draught in the chimney, then either an adjustable flue damper or alternately 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 flue pipe. Adequate provision e.g. easily accessible soot door or doors must be provided for swee-
ping the chimney and connecting flue pipe.
Nominal heat output
Wood
Smokeless fuels
5.0 KW
N/A
5.0 KW
N/A
5.0 KW
N/A
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WESTFIRE · WF26 WF27 WF28
Your appliance needs to be maintained routinely, the throat plate/baffle should be cleaned regularly (monthly).
The flue pipe can be cleaned using a flexible brush. Only Use a dry cloth on external surfaces. Over time the glass
may become dirty, clean with a damp cloth and polish off with damp cloth. If the stove has not been used for
some time the flue should be checked for blockages before use. Do not modify the appliance; only use spares
authorised by the manufacturer.
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
Document J and also in these stove instructions.
UNIQ 26,27,28
Distance to combustible materials rear
Distance to combustible materials side
Distances to flammable materials/furnitures
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 26, 27, 28 wood stove has been tested and is suitable to be installed on a 12mm non combus-
tible 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
Document 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
12 mm 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 Westfire UNIQ 26, 27 & 28 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
leaving a gap of at least 10 cm behind and to sides of stove.
150 mm
350 mm
1000 mm
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