Buderus Logano G125 BE US/CA Installation And Service Instructions Manual page 26

7 Boiler Installation
7.1.2.6 Installation of Insulated Flexible Oil Vent
Apply a ¼" wide bead of high temperature silicone all
around the boiler vent connection 1" from the end.
Install 5" to 4" reducer on boiler vent connection. Se-
cure properly with a clamp.
Carefully measure the required length of vent pipe.
Cut to length with a hacksaw allowing for the two end
adapters in your measurement.
Apply a small bead of high temperature silicone to
the outside of the oil vent ends.
Twist end adapters to each end of the oil vent. Turn
adapters counter clockwise. Engage the outer cover
of the adapter evenly over the exterior of the vent
pipe. Turn the adapter until the vent pipe interior
seats evenly against the expanded teflon gasket of
the end connector.
Secure adapters to the vent pipe with the provided
clamps.
Apply a ¼" wide bead of high temperature silicone all
around at the 5" x 4" boiler reducer and wall termina-
tion connection.
Slide adapters on to reducer and wall termination
pipe all the way. Tighten with clamps.
Support the flexible vent pipe at regular intervals with
brackets or hangers.
Maintain a 1/2" rise per foot on horizontal runs sloped
to outside.
NOTICE
With the installation:
– Avoid any sag in the pipe.
– Do not bend pipe excessively. Slope
termination to outside.
– Wrap 3" ceramic insulation around
adapter near termination and secure
with sheet metal or foil tape and hose
clamps to maintain 1" clearance.
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Fig. 19 Boiler exhaust pipe
Logano G125 BE - Specifications subject to change without notice.