18” Inset Taper 010710
2.4.3
INSTALLING THE APPLIANCE (Hearth clearances)
18” Inset
A non-combustible hearth with a minimum thickness of 12.5mm and having a perimeter of 50mm above floor level is required to discourage
placing carpets or combustible materials close to the hearth. The width must be a minimum of 150mm either side of the fireplace opening
and a depth of 300mm from the front face of the fire opening (Fig. 12).
2.4.4
INSTALLING THE APPLIANCE (Fitting the appliance in position)
BEFORE COMMENCING WORK, TURN OFF ALL APPLIANCES THAT ARE FED BY THE METER.
ISOLATE THE GAS SUPPLY BY TURNING OFF AT THE METER.
Site the appliance as far back in the chairbrick as possible whilst maintaining a central position in the fire opening.
Carefully make a mark in each of the slots in the base of the appliance.
Drill two holes suitable for the fixing plugs provided.
Using the No 10 x 1” woodscrews provided, carefully screw the appliance into position (Fig. 13).
2.4.4.1 INSTALLING THE APPLIANCE (Connecting the gas supply)
A restrictor elbow complete with pressure test point is fitted to the appliance to facilitate servicing. The gas supply to the appliance may be
from the front left hand side or as a concealed fitting from the rear left or right hand side. The preferred method of connection should be
from the rear left.
It is important to note the requirements of the current issue of BS 6891, dealing with enclosed pipes. This standard requires that when a
gas pipe is fed through a wall, it should be enclosed in a gas tight sleeve to protect against failure caused by movement and shall be
constructed to prevent passage of gas either between the pipe and sleeve or sleeve and wall.
Page 9
FIRE
OPENING
HEARTH AREA
150mm
300mm
Fig. 12
Minimum hearth height - 50mm
Minimum hearth width - 805mm
Minimum hearth thickness - 12.5mm
Fixing Slot
Fixing Slot
Fig. 13
