Buderus Logano G215 US Installation And Maintenance Instructions Manual page 34

8 Boiler installation
Minimum size of chimney
The minimum recommended chimney size is 8" x 8"
(6 3/4" x 6 3/4" inside liner) or 6" diameter with a
minimum height of 20 feet. Use a 6" flue pipe for
connection to an existing chimney.
Installing the flue pipe
Slide 6" Insert flue pipe onto the flue outlet and
secure with 2 screws.
NOTICE
Avoid long horizontal flue pipe runs and
keep the number of bends to a minimum.
Install flue connections between boiler and chimney
to slope up at least 1/4" per foot to the chimney.
Connect the flue pipe to the chimney above the
bottom of the chimney to prevent blockages.
Install cleaning and service hatches for cleaning the
flue system.
After starting the burner, set breeching draft
to -.01 to -02 inches WC with a draft gauge. (The
overfire pressure can be positive). If necessary, install
draft controllers in the flue system to maintain the
negative pressure in the system or to meet code
requirements. Always install the draft controller in
vertical position. Use a draft gauge when making
adjustments.
34 Installation and maintenance instructions Logano G215 US oil/gas-fired boilers • Issue 11/2004
2
Fig. 45 Installing the flue pipe
1 Flue pipe
2 Boiler flue outlet
We reserve the right to make any changes due to technical modifications.
1