Viessmann VITODENS 111-W Installation And Service Instructions Manual page 14

Installation sequence
Fitting the boiler and making connections
Condensate drain connection
A
■ The condensate pipe is connected to
the safety valve discharge pipe. The
condensate hose supplied meets the
temperature requirements that are
part of the CE certification.
■ We recommend the internal connec-
tion of the condensate pipe to the
domestic drain, either directly or via a
tundish.
Filling the siphon with water
!
Please note
At commissioning, flue gas may
be emitted from the condensate
drain.
Fill the siphon with water before
commissioning.
14
(cont.)
■ If the condensate pipe is routed out-
side the building, use a pipe with at
least 7 30 mm and protect this pipe
from frost. Avoid long outdoor pipe-
work.
!
Please note
Frozen condensate pipes can
result in faults and damage to
the boiler.
Always insulate condensate
pipes against frost.
■ Observe local building regulations.
Connect the condensate pipe A with a
constant fall and a pipe vent to the public
sewage system.
Observe the local waste water regula-
tions.
Note
Fill the siphon with water before com-
missioning.