Wolf CGB-75 Installation And Technical Manual page 55

Eccentric balanced flue C53, B23
Install the balanced flue distributor 110/110 mm eccentrically
(26) for a separate balanced flue.
When connecting a balanced flue certified acc. to Building
Regulations, observe the permit of the relevant body.
Install the horizontal flue with a slope of
approx. 3° (6 cm/m) towards the boiler.
Route the horizontal air supply with a 3°
slope towards the outside – install the air
inlet with a cowl; permissible wind pressure
at the air inlet 90 Pa. The appliance will not
operate with higher wind pressure.
1 Gas condensing boiler
2 Gas condensing boiler connection
DN 110/160
19 Support bend DN 110
20 Support rail
21 Flue pipe DN 110
500 mm
1000 mm
2000 mm
22 Bend 87° DN 110
23 Spacer
24 Cowl
27 Balanced flue distributor
110/110 mm
28 Tee 87° with inspection aperture
DN 110
29 Ventilation bezel Ø 110
Ventilation air in open flue operation in accordance
with the local regulations:
75 kW
100 kW
180 kW
200 kW
30 62 555_0709
Design information
Ventilation air aperture in balanced flue operation
in accordance with local regulations 150 cm² or 2 x 75 cm².
200 m²
250 m²
350 m²
450 m²
Downstream of the support bend (19), the flue can be routed
in DN 110 inside the duct.
c53
Maintain the following clearance
between the internal duct wall and
the flue:
for circular ducts: 3 cm
for rectangular ducts: 2 cm
B23
Secondary
ventilation
Secondary
ventilation
55