Viessmann Vitopend 100-W Installation And Service Instructions Manual page 10

Installation sequence
Flue gas connection
A Boiler flue connection bend for the
horizontal installation of a flue sys-
tem 60/100
B Flue gas orifice plate
C Coaxial boiler flue connection for the
vertical installation of the flue sys-
tems 60/100 and 80/125
Install the flue system.
Balanced flue system 80/80 mm
Always thermally insulate the ventilation air pipe in unheated rooms.
10
(cont.)
A B C
Flue system installation instruc-
tions
Note
An inspection piece with condensate
trap must be installed in the balanced
flue and must be connected to the con-
densate drain.