Doc653/30CV02A
17
Length of fl ue in m
Diameter
70 mm
Diameter
80 mm
Diameter
90 mm
Diameter
100 mm
Diameter
110 mm
Diameter
130 mm
R30/45
18
40*
n.a
n.a
n.a
n.a.
R30/65
n.a.
12*
39
67
n.a.
n.a.
R30/85
n.a.
n.a.
18
32*
70
n.a.
R30/100
n.a.
n.a.
n.a.
22*
40
80
R30/120
n.a.
n.a.
n.a.
35*
38
72
Table 6
Length of fl ue
The above fl ue pipe lengths have been rounded down.
*
Flue diameter on the boiler
These lengths apply to open type appliances.
For room sealed appliances, these lengths apply to inlets and outlets combined.
Flue losses of various fl ue components expressed in meters of straight pipe. The total loss should
be subtracted from the maximum permissible fl ue length from the previous table.
Type
Diameter in
mm
Pipe bend
90°
R/D =0.5
Pipe bend
90°
R/D = 1
Pipe bend
45°
R/D =0.5
T-piece
R30/45
70
80*
3.5
4.0
1.4
1.5
1.1
1.2
4.0
4.0
R30/65
80*
90
100
4.0
4.5
4.9
1.5
1.7
1.8
1.2
1.3
1.4
4.0
4.5
5.4
R30/85
90
100*
110
4.5
4.9
5.4
1.7
1.8
2.0
1.3
1.4
1.5
4.5
4.9
5.4
R30/100
100*
110
130
4.9
5.4
6.2
1.8
2.0
2.2
1.4
1.5
1.6
4.9
5.4
6.0
R30/120
100*
110
130
4.9
5.4
6.2
1.8
2.0
2.2
1.4
1.5
1.6
4.9
5.4
6.0
Table 7
Flue losses in metres of straight pipe
* Connection to the appliance
If concentric discharge from the appliance is used, the following maximum lengths (excluding roof
clearance) are permissible:
Type
Diameter in mm
Maximum length of straight pipe in m
Number of 90 ° pipe bends
2
4
6
R30/45
80/80 - 80/125
17
14
12
R30/65
80/80 - 80/125
4
3
1
R30/85
100/100 - 100/150
16
14
13
R30/100
100/100 - 100/150
9
7
5
R30/120
100/100 - 100/150
10
8
6
Table 8
Maximum length of straight pipe
Summary of Contents for ECONOFLAME R30
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