5.0 Installation
20
5.9
Side Flue Preparation
1. For both Left and Right Hand Flue - Measure
the distance from the wall to the nearest line
marked from the template. This will be known as
distance R (Fig. 40).
2. Measure the thickness of the wall from the
inside. This will be known as distance W (Fig 41).
3. Add these two figures together plus 168mm
(6
5
/
8
in) for 30-40-50 PF and 224mm (8
7
/
8
in) for
60-70-80 PF
4. 30-40-50 PF:
Flue Duct Length = R + W + 168mm (6
5
/
8
in)
5. 60-70-80 PF:
Flue Duct Length = R + W + 224mm (8
7
/
8
in)
6. Mark off the appropriate length from the
swaged end of the flue duct. Cut the duct to
length and dispose of the unwanted length. (Use
the tape provided to give an accurate cutting
guide by wrapping it around the flue duct with the
edge marking the cutting line) (Fig. 42).
7. Take the telescopic air duct from its pack.
Open the air duct out to the length:-
(30-40-50 PF) R + W + 91mm (39/16 in)
(60-70-80 PF) R + W + 147mm (53/4 in)
8. 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. 43).
NOTE: The seams of all three sections must
be in line.
9. If the wall thickness (W) plus the distance from
the wall to the side of the boiler case (R) is less
than 202mm (8 in), it will be necessary to cut the
components of the air duct to make up the
appropriate size. Dispose of the centre section as
this is not required (Fig. 44).
(30-40-50 PF) R + W + 91mm (3
9
/
16
in)
(60-70-80 PF) R + W + 147mm (5
3
/
4
in)
10. 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. 45).
NOTE: The seams of both sections must be in
line.
30/40/50 = R + W + 168mm
60/70/80 = R + W + 224mm
W
R
30/40/50 = R + W + 91mm
60/70/80 = R + W + 147mm
Wall Thickness - 30mm
Wall Thickness - 30mm
Fig. 44
Fig. 45
Fig. 40
Fig. 41
Fig. 42
Fig. 43
