6
2.2.3 METAL FLUE BOX/125mm DIAMETER FLUES
(Figs. 3A and 3B)
This fire may be installed in a double walled or insulated
metal box built to the requirements of B.S. 715 e.g.
Selkirk, Product Code Number 0404805, using our
fixing kit G.C. Number 159 634
ÿ
Number 992137.
The box must be lagged as detailed in Fig. 3B and
mounted on a non-combustible plinth at least 25mm
thick. Ensure that the base of the opening is level with
the hearth. A larger box built to the requirements of B.S.
715 and insulated as in Fig. 3B may be used. The front
opening must be as shown in Fig. 3A. The flue should
be twin walled e.g. Selkirk IL flues, or insulated type of
at least 125mm internal diameter and with a minimum
effective height of 3 metres. The depth of the opening
must be at least 200mm.
NOTES:
1.
If the flat area around the front opening of the box
is less than as specified in Fig. 1, it may be
necessary to use additional sealing material to
achieve a good seal.
2.
The flue spigot restrictor MUST NOT be fitted.
Fig. 3B
Refer to the following
illustrations for
configuration.
Cover the top, rear and
sides of the fire housing as
shown with 100mm (4in)
loft insulation material as
shown. If the gap between
the fire housing and any
combustible material is
less than 100mm, squeeze
the insulation material
between the two surfaces.
The minimum distance
from any studding or other
combustible material and
the flue pipe or any part of
the fire housing must be
25mm (1in).
Note: The plaster board does not overlap the
edge of the fire housing. Any non-combustible
fire surround material used overlaps as
shown. The non-combustible fire surround
material must be sealed to the fire housing.
Non-combustible fire
surround material
The non-combustible material
must be sealed to the fire
housing to form an air tight seal
all around.
Non-combustible fire
surround material
Fire housing
Sealant
Fig. 3A
FREESTANDING
GAS FLUE BOX
SELKIRK CODE 0404805
125 I/D
98
FL
UE
CE
NT
RE
45
7
6
1
0
21
2
40
7
5
6
0
20
0
