Fig. 6
If fitting without a flue liner, ensure a minimum clearance of 50mm is available
around the semi- circular section of the flue termination to any surface within the
chimney structure. - See page 3, Fig. 1 for more information on clearance to the
flue termination.
The opening needs to be sufficient to accomodate the combustion chamber. To
support the wall above the opening, a suitable lintel must be inserted across the
top of the opening. The lintel could be either pre-cast concrete or steel - Catnic
CN52 or CN 46 could be used, depending upon the inner wall thickness. Before
proceeding with the installation of the fire, an assessment of the area immediately
above the fire is required, see Fig. 6 above. If there is no existing openings within
either triangle, proceed with forming the opening. However, if opening or beams
occur within either triangle, then you should seek specialist advice from a
structural engineer or consider relocating the proposed position of the firebox.
9
400mm interactive area
600mm load triangle
The Interactive Zone -
Openings, beams or joists within
this area need to be assessed.
Load triangle - No beam or
opening permissible within this
area
Lintel
e.g. 750mm x 75mm
Proposed Opening in
Chimney Breast
IMPORTANT
ENSURE PLATFORM FOR
SUPPORTING PRODUCT IS
APPROXIMATELY 30MM
BELOW THE BOTTOM OF
THE OPENING TO PREVENT
A GAP AT BOTTOM OF THE
TRIM
