4.9. The hearth.
The appliance must be mounted on a non-combustible hearth
except when the
conditions in section 4.10.3 are met
(N.B. conglomerate marble hearths are
considered as non-combustible). The hearth must be at least 680mm 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.
4.10 Installation options.
In the United Kingdom, as supplied, this appliance can be installed in the following
situations:
4.10.1
Conventional fireplace.
The fireplace opening must be within the following dimensions:
(*) The total height of the closure plate is 660mm and will accommodate a maximum
opening height of 650mm (This allows a 10mm overhang). Heights above
580mm (Inclusive of sealing tape) will leave the sealing tape and closure plate visible
above the appliance. A baffle is supplied with the fire which can be screwed to the
appliance to cover the sealing tape and closure plate. When using the baffle, the
height of the sealing tape and closure plate can be extended to a maximum 630mm
before being visible (See section 8.1).
4.10.2
Precast flues
The appliance can be installed to a fireplace that has a properly constructed precast
concrete or clay flue block system conforming to BS EN 1806 or BS1289. 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 13,000mm2. Older editions of BS1289
required a cross-sectional area of 13,000mm2. The current revision of the standard
requires 16,500mm2. 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.
Page 14
©
GDC Group Ltd. OCT 2016
INSTALLER GUIDE
Conventional Fireplace
Width
Height
Max.
440mm
Min.
305mm
Max.
610mm(*)
Min.
544mm
