8000026412_01 Air/flue pipe installation manual 13
4.4.6 Maximum pipe lengths, 80/125 mm diameter
Flue system
Article num-
ber
Maximum concentric pipe length
Group (→ Section 4.4.4)
A B C D E
Horizontal wall/roof duct 303209
0010035777
25 m
plus 1 x 87°
elbow
28 m
plus 1 x 87°
elbow
28 m
plus 1 x 87°
elbow
28 m
plus 1 x 87°
elbow
39 m
plus 1 x 87°
elbow
Vertical roof duct 303200 25 m 30 m 30 m 30 m 41 m
External wall connector 0020042748
0010039735
23 m
Plus two 87°
elbows
20 m
plus 3 x 87°
elbows
20 m
plus 3 x 87°
elbows
20 m
plus 3 x 87°
elbows
37 m
plus 3 x 87°
elbows
The inclusion of additional concentric elbows in the flue system reduces the pipe length as follows:
– By 1.0 m for each 45° elbow
– By 2.5 m for each 87° elbow
Flue system Article number
Maximum concentric pipe length
Group (→ Section 4.4.4)
F G H I J
Horizontal wall/roof duct 303209
0010035777
29 m
plus 1 x 87°
elbow
23 m
plus 1 x 87°
elbow
28 m
plus 1 x 87°
elbow
31 m
plus 1 x 87°
elbow
32 m
plus 1 x 87°
elbow
Vertical roof duct 303200 31 m 23 m 28 m 31 m 34 m
External wall connector 0020042748
0010039735
27 m
Plus two 87°
elbows
21 m
Plus two 87°
elbows
26 m
Plus two 87°
elbows
29 m
Plus two 87°
elbows
30 m
Plus two 87°
elbows
The inclusion of additional concentric elbows in the flue system reduces the pipe length as follows:
– By 1.0 m for each 45° elbow
– By 2.5 m for each 87° elbow
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