Wall Thickness
8.0 Installation
19
8.3
Rear Flue
To route the flue to the rear it is necessary to use
the horizontal flue kit (Part No. 247719). This kit
includes a 90° bend, clips and seals, clamp, and a
flue trim. Any other extensions or bends can also
be purchased as required.
When the flue is routed directly out to the rear the
bend and one clip and seal are not required.
1. Measure the wall thickness (Fig. 23). To this
dimension add 295mm.
2. The sum of this shall be known as dimension “X”.
3. Mark dimension “X” on the air duct, measuring
from the joint of the duct and terminal. The
remainder is waste material (Fig. 24).
4. Measure the length of waste and transfer the
dimension to the flue duct (Fig. 24).
5. Remove the waste from both ducts. Ensure that
the cut ends are square and free from burrs.
6. Take the rubber seal and position it on the boiler
adaptor. Using the flue duct clamp secure the flue
duct to the adaptor (Fig. 25).
7. Slide the clip over the cut end of the air duct.
Engage the air duct over the flue duct, ensuring
that the flue duct fully engages in the flue terminal
(Fig. 26).
8. Position the rubber seal equally over the joint
between the air duct and adaptor. Align the clip
with the seal and tighten the screws (Fig. 27).
9. Manoeuvre the boiler backwards into position,
keeping as straight as possible to avoid damaging
the flue as it passes through the wall. Connect the
system pipe work as described in Section 8.5
8.4
Left Side and Vertical Flue
To route the flue to either the left hand side or
vertically it is necessary to use a 0.25m flue
extension kit (Part No. 248189). A horizontal flue kit
(Part No. 247719) or 90° flue elbow kit (Part No.
247725) and vertical flue terminal kit (Part No.
246140) will also be required.
Any other extensions or bends can also be
purchased as required.
1. Mark a dimension of 130mm on both the flue
and air duct of the 0.25m extension and cut.
Discard the remainder. Ensure that the cut ends
are square and free from burrs.
2. Take the rubber seal and position it on the boiler
adaptor (Fig. 28). Using the flue duct clamp secure
the flue duct to the adaptor (Fig. 29). (cont.)
IMPORTANT : Fitting the Flue
• The complete flue system must be fitted to the appliance before positioning when the
wall against which the boiler is being installed is that through which the flue will
terminate.
• When routing either to the left or vertically, sufficient length of flue must be fitted to the
boiler to ensure that it extends outside the outercase. This will enable connection of the
remainder of the flue system once the boiler is in position.
• A rear flue that will pass through one or more walls before the outside wall should be
long enough to protrude through the first wall when the boiler is in position. This will
enable connection of the remainder of the flue system.
Waste
(X)
Waste
Fig. 24
Fig. 23
Fig. 25
Fig. 26
Fig. 27
Air Duct
Flue Duct
Rubber Seal
Flue Duct Clamp
Flue Duct
Air Duct
Clip
Flue Adaptor
Sample Point