LT4934 (1:01/08)
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SHELF PROJECTION
EXAMPLE 677mm SHELF HEIGHT=125mm MAX. SHELF WIDTH
no combustables
below this height
620 mm
All dimensions in mm's
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LEANLINE 2
ENIGMA II SLIMLINE
Installation Instructions
SECTION EIGHT
Siting the Appliance Continued
•
CLASS TWO
Fabricated metal
A double-walled or insulated metal flue box built to the requirements of BS 715 with a minimum
diameter of 125 mm (5 ins) and a minimum effective overall height of 3 metres (10 ft).
IMPORTANT: - Do not fit the restrictor plate if the appliance is installed into this type of
flue.
Note:
If the flue box is to be used with an existing brick or stone chimney a 125 mm (5
ins) minimum diameter flue liner conforming to BS 715 should be used.
Dampers or register plates must not restrict any of the above flues. The flue must only
service a single appliance and not have any branches or traps that may impede the
natural draught. If a terminal is fitted it must be suitable for the purpose (see 'Approved
Flues & Terminals' published by BG Technology Certification Services).
•
The front face (a minimum size of 605 mm (or 555mm for the Leanline Lo) x 505 mm wide)
and the base of the fireplace opening must be flat to ensure that a good seal is formed
between the rear and base of the appliance and the chimney to avoid any reduction of
natural draught.
•
A non-combustible hearth must be provided beneath the appliance within the fireplace
opening, a fire-resisting hearth must also be provided symmetrically disposed about the
fireplace opening a minimum thickness of 12 mm with the perimeter 50mm above floor level.
With a minimum width of 640mm and a depth of 300 mm (add the spacer width to the hearth
depth if a spacer is to be fitted i.e. for a 42mm spacer the hearth depth would be 342mm).
•
Any combustible material above the opening must be removed up to a minimum height of
590 mm above hearth level.
•
Purpose-built superimposed fire-resistant hearths and back panels, specified as suitable by
the manufacturers, may be used, or a suitable proprietary fire surround with a 100
o
C rating
(minimum).
Clearance to Shelf or Surround
To check the compatibility of a
combustible shelf or surround, refer
to the chart.
Clearances at side of fire
Minimum width between vertical
sides of combustible surround
should not be less than 700 mm
provided fire is central to surround
and sides do not project more than
150 mm. When vertical side
forward projection is increased by
12.5 mm add 50 mm to inside width
of surround.
N.B. When fire is fitted this gives a
minimum side clearance of 100mm.