INSTALLATlON
FITTING THE FLUE ASSEMBLY - EXTENSION DUCTS
12 FITTING THE FLUE ASSEMBLY. Duct lengths up to 400 mm (16 in.)
FLUE TERMINAL ASSEMBLY
13 EXTENSION DUCTS. Duct lengths greater than 400 mm (16 in.)
EXTENSION DUCTS SHOWN FITTED
10
Note: For duct lengths greater than 400 mm (16 in.), refer to Frame 13.
FLUE TERMINAL SHOWN IN POSITION
3
6
5
1
2
4
LEGEND
1. Boiler air duct A. Air duct join
2. Boiler flue duct 5. Terminal grille B. Flue duct join
3. Terminal air duct 6. Extension air duct C. Terminal air duct join
4. Terminal flue duct 7. Extension flue duct D. Terminal flue duct joint
1. BEFORE PLACING THE BOILER IN POSITION, loosely
fit the extension air duct and terminal assembly to the
boiler air duct and adjust to the required overall duct
length. Note: Ensure that any of the duct overlaps are
not less than 50 mm (2 in.).
2. Secure the extension air duct in position, using the
adhesive tape provided, at join A. Ensure that a good
seal is made.
3. Remove the terminal assembly.
4. Place the boiler in position - entering the extension
duct into the wall opening.
5. Make good the brickwork around the wall opening.
6. Separate the terminal grille, terminal air duct
and terminal flue duct. Refer to Frame 12.
7. From OUTSIDE of the building, pass the
terminal air duct through the wall opening and
slide it into the extension air duct, locating it as
shown.
8. Smear sealant around outer perimeter of
terminal air duct at the opposite end to the
brackets and on the mating face of the boiler
air duct (use one sachet of sealant).
9. Push the duct fully in until the fixing brackets
contact the wall face.
10. Ensure that the duct is level and make good
between the wall and the duct from OUTSIDE
of the building.
11. From OUTSIDE of the building, slide the
extension flue duct over the boiler flue duct to
the same distance as the extension air duct.
Seal the duct joint (B) with the sealant
provided.
12. From OUTSIDE of the building, pass the
terminal flue duct through the wall opening and
slide it into the extension flue duct. Locate it
as shown, and fix in position with the four
screws previously removed.
13. From OUTSIDE of the building, seal the duct join D with
the sealant provided.
14. Fasten the terminal grille to the duct assembly.
15. Replace the collector hood.
4
3
1
2
Extension ducts
2
3
5
4
6
LEGEND
1. Boiler air duct
2. Boiler flue duct
3. Terminal air duct 5. Terminal grille
4. Terminal flue duct 6. Terminal grille securing screws
A. Air duct join
B. Flue duct join
1. Remove the two securing screws and separate the terminal
grille from the terminal assembly.
2. Remove the four securing screws and separate the terminal 6. From OUTSIDE of the building, pass the terminal flue duct
flue duct from the terminal air duct. through the wall opening and slide it over the boiler flue duct.
3. Smear sealant around outer perimeter of terminal air duct at the Locate it as shown and fix it in position with the four screws
opposite end to the brackets and on the mating face of the boiler previously removed.
air duct (use one sachet of sealant). 7. Seal the flue duct join (B) with the remaining sachet of sealant
4. Push the terminal air duct fully in- until the fixing brackets provided, either from inside the building (through the flue
contact the wall face. duct) or from outside of the building.
5. Make good between the wall and duct, from OUTSIDE of the 8. Fasten the terminal grille to the duct assembly.
building. 9. Replace the collector hood.
Typical minimum
overlap - 50mm (2 in.)
5
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