4.0 SITE REQUIREMENTS - CONTINUED
GB IE
4
All models : This appliance requires a natural draught flue system which may be one of the following;
225mm x 225mm (9in x 9in) brick or stone.
125mm (5in) minimum diameter lined brick or stone.
125mm (5in) minimum diameter twin wall flue conforming to BS 715.
Pre-cast block flue complying with BS 1289 or BS EN 1858.
Any existing under grate draught device must be sealed off. The opening wall must be non-combustible.
The appliance requires a hearth with non-combustible surface of at least 12mm thick. The top surface must be at least 50mm above the
surrounding floor level, or be surrounded by a raised edge or fender 50mm high.
To enable the products of combustion to be cleared properly up the flue, the outlet at the back of the appliance must have a 50mm min-
imum clearance between it and the back wall of the opening or any other obstruction. The area immediately above the outlet must form
a smooth path into the flue.
Any type of fire surround used with this appliance must be adequately sealed to the wall and floor.
A combustible shelf may be fixed to the wall above the fire, providing that it complies with the dimensions given below.
A non-combustible shelf may be fitted to within 10mm of the top edge of the fireframe. Combustible materials, such as wood, may be
fitted to within 100mm of either side of the fireplace opening, providing the forward projection does not exceed 100mm. Any com-
bustible side walls must be at least 500mm to the side of the radiant heat source. As with all heating appliances, any decorations, soft
furnishings, and wall coverings (i.e. flock, blown vinyl and embossed paper) positioned too close to the appliance may discolour or scorch.
The mounting depth of this appliance is 108mm (120mm - Convector models).
In accordance with BS 5871 part 2, minimum debris collection volumes are required behind the installed appliance. These are shown
below and as dimension ‘X’ in figure 1.
CLAY/CEMENT LINES OR BLOCK FLUE WHICH IS NEW, UNUSED, OR PREVIOUSLY ONLY USED WITH A GAS FIRE.
X Dimension = 20mm
UNLINED FLUE OR CHIMNEY WHICH HAS BEEN PREVIOUSLY USED FOR A SOLID FUEL OR OIL BURNING APPLIANCE
X Dimension = 60mm
‘A’. Opening height: 540mm min/575mm max.
‘B’. Opening width: 350mm min/440mm max.
‘C’. Mounting depth: 108mm
‘D’. Hearth must extend minimum of 150mm either
side of the opening.
‘E’. Hearth must extend minimum of 300mm in front
of the opening.
‘F’. Non-combustible hearth must be a minimum of
50mm in height, or be surrounded by 50mm high
fender.
‘G’. 470mm, this area must be flat and vertical to
ensure a good seal.
‘H’. 585mm, this area must be flat and vertical to
ensure a good seal.
‘X’. Debris collection space - See section 4.1.
4.1 DEBRIS COLLECTION SPACE
‘A’
‘C’
‘B’
‘E’
‘F’
‘G’
‘H’
‘X’
‘D’
Figure 1
© 2014 Focal Point Fires plc.
Maximum depth of shelf
Minimum distance from finished
hearth surface to underside of shelf
100mm (4in)
745mm (29
1/4
in)
150mm (6in)
845mm (33
1/4
in)
203mm (8in)
895mm (35
1/4
in)
