ALHENA C
254
cod. 3540000251 - Rev. 00 - 03/2024
EN
For coaxial connection, fit the unit with one of the following starting accessories. For the wall hole
dimensions, refer to the figure on the cover.
To facilitate the removal of condensate, the horizontal pipes must be inclined towards the
unit with a minimum slope of 5% (3°).
fig. 22- Starting accessories for coaxial ducts
Terminal distance (Type C13)
fig. 23
Terminal distance (Type C33)
fig. 24
Table 4- Max. length coaxial ducts
From the minimum length to the maximum length of the flues described in the table, the
power and combustion values declared in the technical data table will be respected within
the tolerances established by EN15502.
041006X0
041084X0
041083X0
Ø 80
Ø 127
120
147
Ø 100
Ø 60
Ø 60 Ø 100
50 mm
400 mm
Coaxial 60/100
Coaxial 80/125
Max. permissible length (horizontal)
All models
7
m
24 kW =
28
m
28 kW =
20
m
34 kW =
20
m
Max. permissible length (vertical)
All models
8
m
Reduction factor 90° bend
1 m
0.5 m
Reduction factor 45° bend
0.5 m
0.25 m