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INSTALLER’S GUIDE
Page 8
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Though the total height of the closure plate will accommodate a maximum opening
height of 650mm, heights above 610mm will leave the closure plate and sealing tape
visible above the appliance.
The appliance must be mounted on a non-combustible hearth (N.B. conglomerate marble
hearths are considered as non-combustible). The hearth must be at least 880mm wide x
300mm deep. The hearth material must be at least 12mm thick. The periphery of the
hearth (or fender) should be at least 50mm above floor level to discourage the placing of
carpets or rugs over it.
The appliance can be fitted to a purpose made proprietary class “O” 150°C surround.
4.9.2
Wall Mounted
The wall opening must be within the following dimensions:
Width
Max.
440mm
Min.
305mm
Height
Max.
610mm
★
Min.
350mm
★
Though the total height of the closure plate will accommodate a maximum opening
height of 650mm, heights above 610mm will leave the closure plate and sealing tape
visible above the appliance.
The bottom of the appliance must be at least 50mm above the finished floor covering. See
figure 1. This requires the top of the opening to be at least 575mm above the finished floor
covering. Any opening visible below the appliance may be closed in but the depth of the
catchment space within the wall opening must be as shown in figure 2.
4.9.3
Precast Flues
The appliance can be installed to a fireplace that has a properly constructed precast
concrete or clay flue block system conforming to BS1289 or BS EN 1806. The appliance
is suitable for installations conforming to older versions of BS1289 as well as the current
standards. The flue blocks must have a minimum width not less than 63mm and a cross-
sectional area not less than 13,000mm
2
.
Older editions of BS1289 required a cross-
sectional area of 13,000mm
2
. The current revision of the standard requires 16,500mm
2
.
This appliance is suitable in both cases.
The chimney should be one or two storeys high but not less than 3m vertical height and
be correctly terminated. No mortar fangs between the blocks should be extruded into the
flueway. If raking blocks are used, they must be fitted in accordance with the
manufacturer’s instructions. Mortar must not be allowed to drop down and accumulate in
the raked positions.
The fireplace opening must be within the following dimensions:
Width
Max.
440mm
Min.
305mm
Height
Max.
610mm
1
Min.
525mm
2