Wolf FGB-K Series Installation And Maintenance Instructions For Contractors page 91

Eccentric balanced flue
1 Gas condensing boiler
2 Adaptor DN60/100
to DN80/125
16 Pipe collar
22 Support rail
23 Support bend 87° DN80
24 Spacer
25 PP flue pipe DN80
26 Shaft cover with
UV resistant terminal
31 Balanced flue distributor
80/80 mm
32 Air inlet pipe Ø 125 mm
33 Bend 90° DN80
34 87° tee with
inspection port DN80
35 Flue pipe DN80
500 mm
1000 mm
2000 mm
3064458_201811
31. Technical information, balanced flue
Install the eccentric balanced flue distributor 80/80 mm (31) for separate air supply/flue
gas routing downstream of the connection adaptor DN80/125 (2) with a test connector.
When connecting a balanced flue certified acc. to Building Regulations, observe the
permit of the relevant body.
Install the horizontal flue pipe with a slope of approx. 3° (6 cm/m) towards the boiler.
Route the horizontal air supply with a 3° slope towards the outside – provide the air
inlet with a wind protector; permissible wind pressure at the air inlet 90 Pa. The burner
will not start if the wind pressure is higher.
Maintain the following clearance between the internal shaft wall and
the flue:
Secondary
ventilation
C53
for round shafts:
for square shafts:
Secondary
ventilation
C53
3 cm
2 cm
91