Flue installation instructions ecoTEC 834449_13
46
• Push the sliding sleeve (
7
) firmly on to the vertical
roof duct (
1
) or, where appropriate, on to an exten-
sion.
• Where appropriate, join the vertical roof duct (
1
) to an
extension.
• Join the sliding sleeve (
7
) to the appliance’s connec-
tion piece. This permits easy separation between the
air/flue duct and the appliance.
• Drill two holes 3 mm Ø through the air duct of the
flue/boiler clamp at the most convienient holes on the
air duct clamp. (Ensure that the drill does not pene-
trate the inner flue duct). Screw the clamp to the air
ducts of the flue assembly and the boiler using the
screws supplied.
• Ensure that any air duct clamps used are positioned
centrally and fixed to the air duct using the self tap-
ping screws supplied.
h
Note
The air/duct clamp must not be screwed to the
bottom of the vertical air/flue duct and termi-
nal accessory to allow for any slight movement
in the roof structure.
• Ensure that at least one pipe clamp supports the air/
flue duct at each extension fitted.
3.7
Fitting air/flue duct extensions
3.7.1
How to add extensions
4
1
2
3
Fig. 3.17 Loosening the flue conduit
h
Note
No tools are required when separating exten-
sions for cutting to size air and flue tubes sep-
arately. When doing so, the flue conduit should
be twisted into a position where the shoulders
on the plastic tube can be pushed through the
spacer-piece. After cutting to size, refit the
flue conduit and secure it to the air conduit.
1.
2.
A
B
+ 40 mm
13
70
27
2
2
1
1
Fig. 3.18 Cutting tubes to size
• Use a saw, tin-snips, etc. to cut tubes to size.
• Start by measuring the required length of air conduit*
(L
air
), and then calculate the corresponding length of
flue conduit (L
exhaust
) as follows:
L
exhaust
=
L
air
+ 40 mm
L
exhaust
= length of flue conduit (
B
)
L
air
= length of air conduit (
A
)
* Minimum length of air-conduit extension: 80 mm.
3 Optional Concentric System Ø 80/125
Summary of Contents for Air flue duct
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