5.0 Installation
16
5.5
Rear Flue Preparation
1. Measure the wall thickness (Fig. 22) and to this
dimension add 60mm (2
3
/
8
in).
2. Take the flue duct and mark off wall thickness
+ 60mm (2
3
/
8
in) from the swaged end of the duct
and cut to size (Fig. 23). (Use the tape provided
to give an accurate cutting guide by wrapping it
around the flue duct with the edge marking the
cutting line).
3. Wall Thickness 280mm - 685mm
(11in - 27in) -Take the telescopic air duct from its
pack. Open the air duct out to the wall thickness.
Using the tape provided seal the joints of the
three sections of the air duct, ensuring an overlap
of at least 30mm (1
3
/
16
in) at each joint (Fig. 24).
NOTE: The seams of all three sections must
be in line.
4. Wall Thickness 100mm - 280mm (4in - 11in)
If the wall thickness is less than 280mm (11 in), it
will be necessary to cut the components of the air
duct to the appropriate size. Dispose of the centre
section, as this is not required (Fig. 25).
5. Measure the wall thickness and subtract 30mm
(1
3
/
16
in) from this dimension. Cut the remaining
sections to this length, measuring from the
positions indicated in the diagram (Fig. 25).
6. Engage the sections, one inside the other, then
open the assembly out to wall thickness. Tape the
sections together using the tape provided,
ensuring that the seal is good (Fig. 26).
NOTE: The seams of both sections must be in
line.
Wall Thi 60mm
Wall Thickness - 30mm
Wall Thickness - 30mm
Wall Thickness
Fig. 22
Fig. 23
Fig. 24
Fig. 25
Fig. 26
