Table A - Installation Depth Requirements for the Kohlangaz Desire gas fire
being installed into a brick built chimney, requiring 12.0 litres of debris
collection volume (figure 3).
Opening Width (mm)
Minimum Depth Required (mm) -
mounting face to rear face of chimney
400mm
308mm
410mm
302mm
420mm
300mm*
430mm
300mm*
440mm
300mm*
450mm
300mm*
*debris collection void at these opening widths exceeds requirements for 12
litres of volumetric debris collection void but minimum 50mm clearance
between outlet spigot and internal face of chimney must be observed.
Fig. 3
1.7
FITTING TO FIREPLACES WITH EXISTING CHAIRBRICKS AND
CONVENTIONAL BRICKBUILT CHIMNEYS
This appliance is not suitable for use in fireplaces fitted with an existing chairbrick
without the removal of the chairbrick.
1.8
FITTING TO PRE-FABRICATED TWIN WALL METAL FLUE BOXES
The appliance may be fitted to twin wall metal flue boxes conforming to the
constructional requirements of BS 715. The top face of the box must be insulated
with a minimum thickness of 50mm of non-combustible mineral wool insulation or
similar material. The flue box must stand on a non-combustible base of minimum
thickness 12mm.
7
Opening Width (400-450mm)
Depth Required
(300mm)