257
cod. 3540000251 - Rev. 00 - 03/2024
EN
ALHENA C
Duct diameters and tolerances
Coaxial ducts
Separate ducts
Use of flexible and rigid pipes
∅
50 and
∅
60
The calculation shown in the tables below includes the starting accessories code 041087X0 for
∅
50 and code 041050X0 for
∅
60.
Flexible pipe
It is possible to use up to 4 m of
∅
80 mm flue between the boiler and the change to smaller dia-
meter (
∅
50 or
∅
60), and up to 4 m of
∅
80 mm flue on the intake (with maximum length for flues
of
∅
50 and
∅
60).
fig. 29- Layout for ducting only with flexible pipe
Ø60 ±0.3
Ø100 ±0.5
Ø80 ±0.3
Ø125 ±0.3
Ø60 ±0.3
Ø80 ±0.3
Ø50 +0.4
ALHENA 24 C
ALHENA 28 C
ALHENA 34 C
A
∅
50
28 m MAX
22 m MAX
17 m MAX
∅
60
78 m MAX
60 m MAX
45 m MAX
max 4 m
Ø80
max 4 m
Ø80
A
