Viessmann Vitodens 100 Installation And Service Instructions Manual page 33

Installing the boiler and making all connections
Terminating into an external purpose
made soakaway
A 722 mm plastic condensate pipe
B External length of pipe 3 m max.
C Open end direct into gully, below
ground but above water level
Filling the siphon with water
(cont.)
Terminating into the rainwater system
A 722 mm plastic condensate pipe
B Internal soil and vent stack
Fill a minimum of 0.3 l of water into the
boiler connect kit flue outlet.
!
Please note
At initial start-up, flue gas may
be emitted from the condensate
drain.
Fill the siphon with water before
start-up.
Installation steps
33