Wall mounting to a pre cast flue.
Important: If the base of the opening is above the finished floor level it must be a
maximum 350mm from the finished floor level. This will ensure that the air relief hole
in the closure plate is not covered or reduced.
4.10.4
Metal flue box.
The appliance can be installed to a metal flue box conforming to BS715 having a
minimum internal depth of 165mm. Incombustible mineral wool insulation of not less
than 50mm thickness must be applied to the top surface of the metal flue box.
The opening must be within the following dimensions:
(*)
The total height of the closure plate is 660mm and will accommodate a maximum
opening height of 650mm (This allows a 10mm overhang). Heights above
580mm (Inclusive of sealing tape) will leave the sealing tape and closure plate visible
above the appliance. A baffle is supplied with the fire which can be screwed to the
appliance to cover the sealing tape and closure plate. When using the baffle the
height of the sealing tape and closure plate can be extended to a maximum 630mm
before being visible (See section 8.1).
In addition the fire has been tested for use with a ‘Rite Vent’ or ‘Selkirk’ Flue Gas
Collector Box. The opening dimensions may differ from those shown above. It is
IMPORTANT that each installation passes a properly conducted Spillage test as in
section 9.
4.11 Flues.
The following flues are suitable:
-
225mm x 225mm conventional brick flue.
If a flue liner is used, it must be a minimum of 125mm diameter. The liner must be
sealed to the surrounding area above the fireplace opening and to the top of the
chimney. An approved terminal must be fitted.
-
A properly constructed precast flue conforming to BS EN 1806, BS EN 1858 or B.S
1289.
-
A flue pipe with a minimum diameter of 127mm. See BS EN 15287-1 for suitable
materials. Metal flue pipes must comply with BS EN 1856 part 1. See section
4.10.4 of this guide for flue box opening sizes.
-
The flue must conform to BS 5440: Part 1 in design and installation.
The flue, measured from the bottom of the fireplace opening to the bottom of the
Page 16
©
GDC Group Ltd. OCT 2016
INSTALLER GUIDE
Metal Flue Box.
Width
Height
Max.
440mm
Min.
380mm
Max.
610mm
(*)
Min.
544mm
