ALHENA TECH K 50
Connection with coaxial pipes
fig. 30- Examples of connection with coaxial pipes (
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. Any horizontal sections of the fume exhaust must be
kept sloping slightly towards the boiler, to prevent possible condensate from flowing back towards
the outside and causing dripping.
Ø 100
Ø 60
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Table 5- Max. length coaxial ducts
Max. permissible length (horizontal)
Max. permissible length (vertical)
Reduction factor 90° bend
Reduction factor 45° bend
EN
Ø 127
Ø 80
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fig. 31- Starting accessories for coaxial ducts
Coaxial 60/100
All models
m
7
All models
m
8
1 m
0.5 m
cod. 3542A220 - Rev 01 - 07/2022
= Air /
= Fumes)
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Coaxial 80/125
=
ALHENA TECH 28 K 50
=
ALHENA TECH 34 K 50
0.5 m
0.25 m
m
20
m
20
295