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• Connect the safety valve discharge 9 (Fig-
ure 5.4) to an outlet funnel.
Figure 5.4
5.7 Flue gas outlet dimensions and
lengths
The flue gas outlet/air suction can be set up
in the following ways:
C
C
C
C
C
B
12
32
42
52
82
Consult the sheet provided with the select-
ed kit which is packaged separately.
The horizontal sections of the flue gas pipes
must have a slope of approx. 1.5 degrees
(25 mm per metre).
The outlet duct must be con-
structed in such a way as to ab-
solutely prevent the stagnation
of condensate inside the duct as
well as the backflow of the con-
densate inside the combustion
chamber, therefore the terminal
must be lower than the boiler
side opening.
Therefore, follow the general in-
structions for installing the hor-
izontal sections and install one
or more condensate collection
- 30 -
INSTALLATION
22
kits where necessary.
Figure 5.5
The following kits are available for connec-
tion to the boiler:
Wall-mounted flue gas outlet kit (Figure
5.8 A)
9
Coaxial duct Ø 60/100 mm with a nominal
length (L Figure 5.8) of 915 mm.
This kit is used to release flue gases through
the wall behind or to the side of the boiler.
The minimum length of the duct and the
maximum length with an extension must
comply with the following parameters:
Coaxials Ø 60/100 mm
M290E.24CM
For lengths between 0.5 m and
1 m
For lengths between 1 m and 2 m
For lengths between 2 m and 4 m
M290E.28CM
For lengths between 0.5 m and
1 m
For lengths between 1 m and 2 m
For lengths between 2 m and 4 m
M290E.32CM
For lengths between 0.5 m and
1 m
For lengths between 1 m and 3 m
Figure 5.6
The diaphragm must be inserted
or removed following the in-
structions in Figure 5.6.
The diaphragm must be posi-
tioned as shown in Figure 5.7.
1,5°
Diaphragm
Ø 38 mm
Ø 47 mm
None
Ø 38 mm
Ø 47 mm
None
Ø 41 mm
None
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