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 sweep-
ing the chimney and connecting flue pipe.
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 Docu-
ment J and also in these stove instructions.
UNIQ 15,16
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 15, 16 wood stove has been tested and is suitable to be installed on a 12mm non combustible
plate such as Westfire 12 mm 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
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 15 & 16 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.
WESTFIRE · WF15 WF16
9
UK
150 mm
350 mm
750 mm