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3.6 Balanced flue arrangement C53
VF
60 100
Balanced Vertical balanced flue Vertical balanced flue
flue kit 80/125 + combustion 100/150 +combustion
air terminal 80 air terminal 100+100/80
Black
flue
059510 059513
Brown
flue
059511 -
Take note of the acceptable balanced flue outlets
on the following pages
In calculating the length of a flue
Allow one metre equivalent for a 90degree elbow
Allow half a metre equivalent for a 45degree elbow
For both flue and combustion air pipes, a 3degree slope
upwards in direction of flow is recommended
0
2
4
6
8
10
12
14
16
18
02
4681
01214161820
L air inlet (m)
L1 flue
(m)
- maximum duct length Type C53 -
- VF 60 -
-1
1
3
5
7
9
11
13
15
02
4681
01214161820
L air inlet (m)
L1 f
lue (m)
- maximum duct length Type C53 -
- VF 100 -
VF
60 100
A (mm)
1890 2005