Hearth
The hearth should be able to accommodate the weight of the stove and its chimney if the chimney is not
independently supported.
The WESTFIRE WF23/UNIQ 23 INSET, WESTFIRE WF32/UNIQ32 INSET wood inset stove has been tested and
is suitable to be installed above a 12mm non combustible plate such as Westfire 12mm glass plates or 20mm
slate plates. Installation of the stove must be at a minimum height of 450mm for 12mm hearth. 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 Regulations Approved Document J and also in these stove instructions.
If the stove is to be installed in front of 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 WESTFIRE WF23/UNIQ 23 INSET has an option of a closed air supply collar; this enables the stove to
take all combustion air (primary, secondary and tertiary) directly from outside with a 100mm pipe from the
stove.
The WESTFIRE WF32/UNIQ 32 INSET does not have a closed combustion option.
FLUE AND AIR INTAKE POSITIONS
WF32/UNIQ32 INSET
WF23/UNIQ23 INSET
Distance from rear to centre of top flue exit
150mm
135 mm
Distance from floor to centre of rear flue exit
N/A
N/A
Distance from top of appliance casing to centre
of Air intake.
N/A
500mm
