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INCORRECT implementation of twin flue
gas discharge/air suction systems
S
A
Figure 5.7
A = air suction
S = flue gas discharge
5.8 Flue gas discharge dimensions
and lengths
The flue gas discharge/air suction can be im-
plemented with the following methods:
C
C
C
C
C
C
B
13
33
43
53
63
83
Consult the sheet provided together with the
selected, separately packaged kit.
The horizontal sections of the flue gas pipes
must have a slope of approx. 1.5 degrees (25
mm per metre).
The terminal must be higher than
the boiler side entrance.
INSTALLATION
S
23P
Only the coaxial pipe with the terminal must
be horizontal as the discharge pipe has already
been implemented with the correct slope.
The following kits are available for connection
to the boiler:
Wall-mounting flue gas discharge kit (Fig-
ure 5.8 A)
C13
B
A
Figure 5.8
Coaxial duct Ø 60/100 mm with a nominal
length of 915 mm.
This kit makes it possible to discharge the flue
gas in the wall behind or to the side of the
boiler.
The minimum length of the duct must not be
less than 0.5 m, whereas the maximum length
with an auxiliary extension must not exceed
10 m for model M160.2025 SM/M and 6 m for
model M160.3035 SM/M.
Vertical flue gas discharge kit with 90° el-
bow (Figure 5.8 B)
Coaxial duct Ø 60/100 mm.
This kit makes it possible to raise the discharge
axis of the boiler by 635 mm.
The minimum length must not be less than
0.5 m, whereas the maximum length with an
auxiliary extension must not exceed 10 m for
model M160.2025 SM/M and 6 m for model
90°
C
45°
- 35 -
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