Wolf COB Installation Instructions And Technical Manual page 36

Installing the flue
1 Oil condensing boiler
2 Connection adaptor with test nipple
for air and flue gas (included in COB standard delivery)
16 Rose
23 Support rail
24 87° support bend
25 Spacer
26 PP pipe
27 Cowl
33 PP outlet
34 Electrical flue gas damper
35 Extension (where required)
38 37
36
32
26
35
34
2
1
Example of an open flue cascade design according to type B23
36
23. Cascade operation
Flue gas header design / notes
In the vertical part of the flue, a cleaning and inspection aperture is required
immediately above or below the flue diverter if the distance from the centre of the
cleaning and inspection aperture in the horizontal part of the flue to the vertical axis
of the flue is greater than 30 cm.
The distance can be up to 1 m if the inspection aperture in the horizontal part of the
flue is arranged on the front and if there are no diverters in the flue from this cleaning
and inspection aperture to the vertical part.
In the upper part of the flue arranged inside the building (< 5 m), a cleaning and
inspection aperture is required if cleaning or inspection cannot be carried out from the
roof.
Before commissioning the combustion system, have the safe usability of the flue
system confirmed by the local flue gas inspector [in Germany; check local regulations].
37 37
32
32
26
26
35 35
34
34
2 2
1 1
36 Siphon
37 PP header
38 End piece with inspection aperture and condensate
drain
37
32
26
35
Secondary
34
ventilation
2
1
27
33
26
16
26
25
24
23
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