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8.2 (cont'd) Flue and Air Ducts
Telescopic:
The Telescopic Flue system MUST NOT be cut.
Adjust the flue to your 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 flue duct. Secure with screw
provided and tape the joint, see diagram 8.7.
Standard:
Separate the flue duct from the terminal by twisting
to release the terminal catch, then pull out of the
retaining seal, refer to diagram 8.8.
The duct cutting lengths are shown in diagram
8.8.
The air duct should be cut at the opposite end
to the terminal fixing.
The terminal plastic duct MUST be cut at the
opposite end to the catch.
The plastic flue duct extensions MUST be cut at
the opposite end to seal.
The cut ducts must be de-burred and all filings
and debris removed.
Note: If you require to lubricate the seals to ease
installation, please do not use a mineral oil based
grease, we would recommend the use of water.
8.3 Flue Assembly
The flue assembly is a push fit design with
securing collars.
Having adjusted the telescopic or cut the air and
flue ducts as described in section 8.2
Assemble the flue elbow to the air duct, ensuring
the correct alignment of the terminal. Fit the collar
into position, mark through two of the pre drilled
holes in the collar. Remove collar and drill two
3mm diameter holes in the elbow, take care not
to pierce the inner flue duct.
Insert the terminal flue duct, remembering to
engage the catch within the terminal, check for
alignment.
Fit the rubber sealing collar behind the locating
lugs on the flue terminal, see diagram 8.1.
Push the flue assembly into the wall, externally
or internally, initially 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 flue
duct to be drawn back into the flue elbow after
the boiler has been mounted.
8.4 Flue Attachment To Boiler
Secure the flue elbow in position on top of the boiler
with four torque headed screws supplied.
Draw the flue assembly from wall and engage the
flue duct into the elbow and butt fit the air duct,
then fit the collar and secure with screws provided,
see diagram 8.9.
NOTE: If the air and flue ducts have been correctly
cut to the instructions given in section 8.2, the
rubber sealing collar should fit flush with the
outside wall, check this.
Slide the internal trim ring back against the wall,
securing in place with a small amount of sealant
if required.
Air duct securing -
telescopic
28
AIR DUCT -
TELESCOPIC
Diagram 8.7
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