Biasi RINNOVA COND 24S User Manual And Installation Instructions page 38

Useful static pressure at
nominal heat input
Overheated flue
Maximum recirculation of
CO2 in the suction duct
TYPE C (Figure 5.12)
83
The boiler with this type of outlet installed
must take the comburent air from the outside
and discharge the flue gas in the individual or
collective chimney designed for this purpose.
C83
Figure 5.12
Roof-mounted flue gas outlet kit (Figure
5.13)
This kit enables flue gases to be released di-
rectly through the roof.
Coaxial duct Ø 80/125 mm
Nominal length
Maximum length
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INSTALLATION
24 kW 150 Pa
28 kW 200 Pa
32 kW 220 Pa
24 kW 92 °C
95 °C
28 kW
32 kW 93 °C
24 kW 1 %
28 kW 1,2 %
1,1 %
32 kW
0.96 m
12 m
C33
Ø 125
Figure 5.13
Extensions are available for reaching the
maximum height.
Coaxial 90° and 45° elbows with Ø 80/125 mm
are available that reduce the total max. length
of the ducts by:
For a 45° elbow loss
For a 90° elbow loss
TYPE B (Figure 5.14)
23P
This type of flue gas outlet extracts the nec-
essary combustion air from the same room as
the boiler is installed in; the combustion prod-
ucts must be released outside and the outlet
pipe can be through the wall or a chimney.
TYPE B duct
23P
Minimum length
Maximum length (A + B)
There must be a suitable air vent
in the room where the boiler is in-
stalled for the supply of combus-
tion air and for room ventilation.
For proper operation, the minimum necessary
air exchange must be 2 m
heat input.
90°
45°
0.5 m
1 m
0.5 m
40 m
3 /h for each kW of