24
9 Flue Preparation and Installation
The cut ducts must be de-burred and all filings and debris
removed.
Insert the flue duct into the air duct terminal assembly,
remembering to engage the catch within the terminal.
NOTE: If you require to lubricate the seals to ease installation,
do not use mineral oils or grease, silicon grease or water is
recommended.
Fit the sealing collar onto the locating ring on the flue terminal,
see diagram 9.6.
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
assembly to be drawn back into the flue elbow.
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 between the air duct and flue elbow.
Ensuring the correct alignment of the terminal.
Fit the securing collar into 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 flue duct.
Fit the securing collar and secure with screws provided, see
diagram 9.10.
Slide the internal trim ring back against the wall, securing in
place with a small amount of sealant if required.
NOTE: If the air and flue ducts have been correctly cut to the
instructions given, the sealing collar should fit flush with the
outside wall, check this.
12967
Diagram 9.8
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