5
Boiler installation
Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.
22
5.3
Installation options
The GB125 boiler is approved with the following venting
systems available from Buderus:
Types of installation
Description
HT-K
Concentric combustion air
and vent pipe exiting horizon-
tally through external wall.
Horizontal direct vent concentric com-
bustion air and venting pipe system
DO
Concentric air supply and
flue pipe system exiting verti-
cally through roof.
Vertical concentric combustion air
and venting pipe system
GA-K
Flue system comprising
back-vented flue pipe in
chimney.
Flue pipe inside an existing masonry
chimney similar to a liner. Chimney
chase used as a raceway to bring in
combustion air. Concentric piping of
flue and combustion air from chimney
to the boiler.
Tab. 11 Installation options
Installation type III may not be suitable for
homes with a double flue chimney where the
second flue is used with a second combus-
tion appliance.