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8. If any terminals, cowls or chimney pots are fitted on the flue, ensure that they are suitable
use with a decorative gas fire and do not restrict the cross sectional area of the flue.
Please consult the manufacturer of the terminal/cowl/chimney pot for guidance.
3.2.2. Installation of Burley Magiglo Custom 16 and L16 into a 125mm
(5”) Class 2 Metal Flue system
The Burley Magiglo Custom 16 and L16 (6.9kW Models only) may be installed into a flue
system where the minimum dimension of the flue is 125mm (5”), provided that the following
criteria are met:
1. The installation is carried out following the current British standards (or equivalent):
BS5871:pt3
Installation of Decorative Gas Fires
BS5440:pt1 and 2
Installation of flues and ventilation
IGE/UP/7
IGE document for gas installations in Timber Frame Buildings
(Available from Gas Safe or Institute of Gas Engineers)
2. The flue must have a minimum equivalent height of 3 metres (10ft).
3. All flue materials should comply with the requirements of BS EN 1856 - Chimneys -
Requirements for metal chimneys - System chimney products.
4. Any metal flue box must comply with BS715 and have minimum dimensions as shown in
Figure 25. There must be a minimum of 50mm clearance from any combustible material;
alternatively the box may be insulated with 25mm Rockwool or equivalent. The top of the
box must be insulated with 25mm Rockwool or equivalent.
Where minimum and maximum dimensions are shown, these must be adhered
to. These are examples only, and may not accurately represent your particular
installation.
On completion, the installation must be thoroughly tested for spillage using a
smoke match as detailed in the Commissioning section of the Installation
instructions.
3.2.3. Installation Example using Metal Flue Box
(Custom 16 & L16, 6.9kW Models Only)
PROPRIETARY
FIRE SURROUND
25mm INSULATION
300mm
min
HEARTH
125mm
TWIN WALL
METAL FLUE
min 90mm
( E.G. MARBLE)
FALSE CHIMNEY
BREAST
TWIN-WALLED
METAL FLUE
BOX
260mm
Maximum
Figure 24
125 mm MIN
58
5
m
in
375
67
5
Figure 25 – Minimum Dimensions of Metal Flue Box
