INSTALLER’S GUIDE
Page
8
solid fuel, the flue must be swept clean prior to installation. All flues should be
inspected for soundness and freedom from blockages.
4.3
If the fireplace opening is an underfloor draught type, it must be sealed to
stop any draughts.
4.4
The appliance must be mounted behind a non-combustible hearth (N.B.
conglomerate marble hearths are considered as non-combustible). The appliance can
be fitted to a minimum class “O” – 100°C surround. 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 (See figure 1).
The surface of the hearth must be sufficiently flat to enable the bottom of the front
surround and the bottom front cover to be aligned horizontally. Any excessive
unevenness (uneven tiles, Cotswold stone, etc.) should be rectified.
4.4.1. ‘Hole-in-the-wall’ Installations
•
It is recommended that a hearth should be installed as in figure 1.
•
If a reduced depth Hearth is fitted, the fire must be installed so that the
distance from the base of the fireplace opening in the wall to the finished
floor level is 85mm minimum. It is recommended that the reduced hearth
has a depth from the fixing plane of the fire of 100mm minimum. This is
necessary to support the lower front casting.
4.5
If the Fireplace opening is greater than the acceptable dimensions given in this
guide, do not use the back of a fire surround or marble to reduce the opening. This
may cause cracking of the surround back or marble
4.6
The appliance must not stand on combustible materials or carpets
.
4.7
The minimum height from the top of the hearth to the underside of any shelf
made from wood or other combustible materials is as follows: -
•
For a shelf up to 150mm deep
Minimum height = 860mm.
•
For a shelf deeper than 150mm
860mm + 12.5mm for every 25mm depth over 150mm
(See Graph 1).
