Table A - Installation Depth Requirements for a Flavel Kenilworth, HE, Linear
HE, Diamond HE or Expression HE being installed into a brick built chimney,
requiring 12.0 litres of debris collection volume (figure 2).
When installing this product into a brick built chimney, there must be a minimum
depth available of 200mm available for the collection of debris behind the firebox
when installed.
See figure 2 below for explanatory diagram.
Fig. 2
1.7 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, (for example the Selkirk LFE 175 box).
The box must have a minimum flue diameter of 125mm internal and minimum
internal dimensions of 275mm deep by 580mm high by 400mm wide. 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 if the flue box
being utilised is of single skin construction.
7
Firebox
Depth Required
200mm
Minimum
VOID FOR FLUE DEBRIS COLLECTION
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