5
Installing the boiler
Logano GB125 BE US/CA - Subject to technical modifications.
21
Pipe changes of direction
The overall lengths apply for systems with one elbow.
Every additional elbow (accessory) reduces the maximum
vent length by 3 ft (1 m).
Maximum length of flue pipe, feet (m)
Plastic flue system DN 80/125
Boiler capacity
I or HT-K
Concentric air sup-
ply and flue pipe exit-
ing through external
wall
II or DO
Concentric supply
air and flue gas rout-
ing via roof
III or GA-K
Concentric air/flue
gas routing through
a flue inside a duct
GB125
22
17’ (5.2 m)
51’ (17 m)
51’ (17 m)
30
17’ (5.2 m)
64’ (21 m)
64’ (21 m)
35
17’ (5.2 m)
71’ (23 m)
71’ (23 m)
Tab. 12 Maximum flue pipe lengths
For installation details see the Installation
Instructions for the different flue gas systems.
