Wolf COB-2 - Page 23

Planning
3066501_201910 WOLF GmbH | 23
Type Design variants
Maximum length [m]
1
COB-2 15 20 29 40
C53x
Connection to a ue in a shaft and supply air through
an external wall (room sealed, supply air pipe 4 m,
1x bend 87°)
DN 80/125 30 30 30 -
DN 110/160 - - - 30
C83x
Concentric connection to moisture-resistant ue gas
chimney and combustion air through external wall
(room sealed)
Calculation according to DIN
EN 13384 (balanced ue
chimney manufacturer)
C93x
Vertical ue for installation in a shaft, with minimum
dimensions rigid or exible with horizontal concentric
connection pipe DN 60/110, vertical DN 60
Rigid DN 60 13 - - -
Flexible
DN 60
9 - - -
C93x
Vertical ue for installation in a shaft, with minimum
dimensions rigid or exible with horizontal concentric
connection pipe DN 80/125, vertical DN 80 or DN 83
Rigid DN 80 29 24 21 -
Flexible
DN 83
27 21 17 -
C93x
Vertical ue for installation in a shaft, with minimum
dimensions rigid or exible with horizontal concentric
connection pipe DN 110/160, vertical DN 110
Rigid DN 110 - - - 22
Flexible
DN 110
- - - 22
1
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
length corresponds to the total length from the heat generator to the ue outlet)
Table 4.9 Permissibleair/uegasroutinglengths[m]
Calculatedlengthofair/uegasbends
Bend Type Calculated length [m]
30° Single wall 0.4
45° Single wall 0.6
87° Single wall 1.0
30° Concentric 0.7
45° Concentric 1.2
87° Concentric 2.0
Table 4.10 Calculatedlengthsofair/uegasbends
Calculation example
The calculated length of the air/ue gas routing system or standard ue is derived from the straight pipe
length and the length of any pipe bends.
Length of straight air/ue 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