Flexible and rigid pipes
To use these diameters follow the instructions below.
Access the TS menu and bring the value of parameter P68 to the value corresponding to the len-
gth of flue used. After changing the value, proceed with the complete manual calibration (see
*** 'Complete manual calibration' on page 271 ***).
For model 24 kW /
P68
10
8
6
4
2
0
0
10
Connection to collective flues
For C83 type installations
The unit's fume evacuation pipe is con-
nected to a single or collective natural draft
flue. The combustion air enters via a second
duct, with its own terminal, directly from the
outside.
The fan is located upstream of the combu-
stion circuit.
• For temperatures and fume flow rates, re-
fer to "Technical data table" on page 290
For C43 type installations
Device intended to be connected via two se-
parate ducts to a collective natural draft flue.
The flue consist of two ducts (concentric or
separate), whose terminals are in similar
wind conditions; in one the air is sucked in
and in the other the fumes are evacuated.
The fan is located upstream of the combu-
stion circuit.
• For temperatures and fume flow rates, re-
fer to "Technical data table" on page 290
258
EN
For model 28 kW /
20
30
40
fig. 30- Chart for flue parameter choice
cod. 3540000251 - Rev. 00 - 03/2024
ALHENA C
For model 34 kW
50
60
70
C
83
fig. 31
C
43
fig. 32
m
80