Wolf COB Technical Manual And Installation Instructions page 44

Installing the flue
1 Oil condensing boiler
2 Connection adaptor with test nipple for air and flue
gas (included in COB standard delivery)
16 Pipe collar
23 support rail
24 87° support bend
25 Spacer
26 PP pipe
27 Shaft cover
33 PP outlet
34 Check the 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
44
26 Cascade operation - Flue gas
header design
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 Trap
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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