Viessmann Vitodens 050-W Installation And Service Instructions Manual page 16

Installation sequence
Mounting the boiler and making the connections
!
Please note
Excessive test pressure will
damage the boiler and the gas
train.
Max. test pressure 150 mbar
(15 kPa). If a higher pressure
is required for tightness tests,
disconnect the boiler and the
gas train from the main supply
pipe (undo the fitting).
Connecting the safety valve and condensate drain
■ The condensate pipe is connected to
the discharge pipe of the safety valve.
The supplied condensate hose meets
the temperature requirements for
CE certification.
■ We recommend connecting the con-
densate pipe to the internal domestic
waste water system, either directly or
via a tundish.
16
A
4. Purge the gas line.
■ If the condensate pipe is routed out-
side the building, use a pipe with min.
7 30 mm and protect it from frost.
Avoid long external pipe runs. Install a
tundish.
!
Please note
A frozen condensate pipe can
result in faults and damage to
the boiler.
Always protect condensate
pipes against frost.
■ Observe local building regulations.
Connect condensate pipe A to the pub-
lic sewage system with a constant fall
and a pipe vent.
Observe the local waste water regula-
tions.
Note
Fill the siphon with water before com-
missioning.
(cont.)