Wolf COB-2 Operation Instructions Manual page 23

Planning
Type Design variants
Connection to a flue in a shaft and supply air through
C53x an external wall (room sealed, supply air pipe 4 m,
1x bend 87°)
Concentric connection to moisture-resistant flue gas
C83x chimney and combustion air through external wall
(room sealed)
Vertical flue for installation in a shaft, with minimum
C93x dimensions rigid or flexible with horizontal concentric
connection pipe DN 60/110, vertical DN 60
Vertical flue for installation in a shaft, with minimum
C93x dimensions rigid or flexible with horizontal concentric
connection pipe DN 80/125, vertical DN 80 or DN 83
Vertical flue for installation in a shaft, with minimum
C93x dimensions rigid or flexible with horizontal concentric
connection pipe DN 110/160, vertical DN 110
Available fan draught: COB-2-15: 32 - 65 Pa / COB-2-20: 45 - 65 Pa / COB-2-29: 55 - 105 Pa / COB-2-40: 70 - 150 Pa (maximum
1
length corresponds to the total length from the heat generator to the flue outlet)
Table 4.9 Permissible air/flue gas routing lengths [m]
Calculated length of air/flue gas bends
Bend
30°
45°
87°
30°
45°
87°
Table 4.10 Calculated lengths of air/flue gas bends
Calculation example
The calculated length of the air/flue gas routing system or standard flue is derived from the straight pipe
length and the length of any pipe bends.
Length of straight air/flue gas pipe = 5.5 m
87° support bend = 2.0 m
2 • 45° bend = 2 • 1.2 m
L = 5.5 m + 1 • 2.0 m + 2 • 1.2 m
L = 9.9 m
3066501_201910
Type
Single wall
Single wall
Single wall
Concentric
Concentric
Concentric
Maximum length [m]
COB-2 15
DN 80/125 30
DN 110/160 -
Calculation according to DIN
EN 13384 (balanced flue
chimney manufacturer)
Rigid DN 60 13
Flexible
9
DN 60
Rigid DN 80 29
Flexible
27
DN 83
Rigid DN 110 -
Flexible
-
DN 110
Calculated length [m]
0.4
0.6
1.0
0.7
1.2
2.0
1
20 29 40
30 30 -
- - 30
- - -
- - -
24 21 -
21 17 -
- - 22
- - 22
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