Wolf CGB-2 Series Installation Instructions For Contractors page 82

Concentric balanced flue, horizontal C13x, C83x and B33
and flue on an external wall C53x (examples) DN80/125
1 Gas condensing boiler
2 Adaptor DN60/100
to DN80/125
3 Balanced flue pipe with inspec-
tion port DN80/125
(250 mm long)
4 Balanced flue pipe DN80/125
500 mm
1000 mm
2000 mm
5 Spacer bracket
10 Inspection bend 87° DN 80/125
11 Bend 87° DN 80/125
15 Balanced flue pipe
horizontal, with wind protector
16 Pipe collar
17 External wall panel 87° DN80/125
with smooth air pipe end
18 Balanced flue pipe,
external walls
DN80/125
19 Air inlet, external wall
DN80/125
20 Conc. outlet terminal
with clamp fitting
21 Connection to a
flue gas chimney B33
Length 250 mm with air aperture
22 Support rail
23 Support bend 87° DN80
24 Spacer
25 PP flue pipe DN80
26 Duct cover with
UV resistant terminal
28 Inspection tee
29 Air pipe Ø 125 mm
30 Air inlet pipe Ø 125 mm
82
37. Technical information, air/flue gas
routing
4 5
11
Horizontal balanced flue routed
through pitched roof
10
Flue routed along external wall
3
2 2
1 1
C13x C53x
16 16 30 5
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 – fit 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. Downstream of support bend (23), the flue can be
routed in DN80 inside the duct. A flexible flue pipe DN83 can be connected downstream
of support bend (23).
Dormer
220
15 16
4 5 4 16
4 5
10
(only where required)
2
1
Recess Ø 90 mm in
chimney side. Install the
flue pipe airtight into the
chimney side.
B33
29 28 4 5
2
1
C83x
20 20
18
18
19
18
18
16
17 17
26
25
21 16
24
23
22
26
25
4 16
24
23
22
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