23
Diagram 10.8
12929
Diagram 10.9
12977
Diagram 10.10
12930
10 Telescopic Flue - Length, Preparation and Installation
10.5 Flue Fitting
With the air duct seams aligned and the ue set to the
required length ‘Y’, mark the securing hole position in the air
duct. Drill a 3mm diameter hole at this position, take care not
to pierce the inner ue duct. Secure with screw provided and
tape the joint, see diagram 10.8.
Fit the sealing collar onto the locating ring on the ue terminal,
see diagram 10.9.
With the ue elbow removed, push the ue assembly into
the wall, externally or internally, until the end of the assembly
protrudes a short way from the inside face of the wall. This
will enable the internal trim ring (if required) to be positioned
and allow the ue assembly to be drawn back up to the ue
elbow.
Secure the ue elbow in position on top of the boiler with the
four screws supplied.
Draw the ue assembly from wall and engage the ue duct
into the elbow and butt t between the air duct and ue elbow.
Check the correct alignment of the ue.
Fit the securing collar in position, mark through two of the pre
drilled holes in the securing collar. Remove securing collar
and drill two 3mm diameter holes one in the elbow and one in
the air duct, take care not to pierce the inner ue duct. Fit the
securing collar and secure with screws provided, see diagram
10.10.
Slide the internal trim ring back against the wall, securing in
place with a small amount of sealant if required.
The cut ducts must be de-burred and all lings and debris
removed.
Insert the ue duct into the air duct terminal assembly,
remembering to engage the catch within the terminal.
NOTE: If the seals require lubricant to ease installation, do
not use mineral oils or grease, only silicon grease or water is
recommended.
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