Logic HE Balanced Flue Log Installation User Instructions
21
Installation Instructions
4. Non Recessed Installation
4.1 Mark the position of the flue on the inner wall by measuring
from the top of the finished hearth level, Diagram 4.
4
4.2 A 152mm (6’) diameter hole is required to install the flue.
This can be achieved by either:
a) Core drill
b) Hammer and chisel.
It is advisable to drill small holes around the circumference
when using method b. Make good both ends of the hole.
4.3 It will now be necessary to construct a studwork frame to
house the appliance. The minimum depth of the aperture
must be 230mm. This includes an air gap of 5mm behind
the appliance. The sides must be lined with non-combustible
material for the full depth of the aperture.
4.4 Combustible parts of the studwork frame must not be any
closer than the minimum dimensions shown in Diagram 5.
These dimensions need to be maintained even if the frame
work is protected by non combustible material.
4.5 Do not pack the void around or above the appliance with
insulation material such as mineral wool.
5
300mm
200mm
170mm
170mm
25mm
25mm
25mm
110mm
150mm
12mm
3.4 The appliance can either be recessed into an inner leaf of
the wall. A 75mm rebated surround must be used with this
method. Or it can be installed in front of the wall in
conjunction with a fire surround constructed of a studwork
frame, Diagram 3a & 3b for options.
If using a back panel constructed from natural materials
such as stone, the panel should consist of 3 or more
sections to reduce the risk of cracking.
68mm
262mm
5mm Gap
Flue cut to 90mm
3a
MINIMUM FLUE LENGTH
MAXIMUM FLUE LENGTH
220mm
3b