Viessmann Vitodens 050-W Installation And Service Instructions Manual page 15

Mounting the boiler and making connections
!
Please note
Excessive test pressure will
damage the boiler and the gas
train.
Max. test pressure 150 mbar
(15 kPa). Where higher pres-
sure is required for tightness
tests, disconnect the boiler
and the gas train from the
main supply pipe (undo the fit-
ting).
Connection, safety valve and condensate drain
■ The condensate pipe is connected
with the discharge pipe of the safety
valve. The condensate hose supplied
meets the temperature requirements
that are part of the CE certification.
■ Connecting the condensate pipe inter-
nally to the domestic waste water sys-
tem, either directly or via a tundish, is
recommended.
4. Purge the gas line.
■ If the condensate pipe is routed out-
■ Observe local building regulations.
A
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 trap with water before commis-
sioning.
Installation sequence
(cont.)
side the building, use a pipe with at
least 7 30 mm and protect this pipe
from frost. Avoid long external pipe-
lines. Install a tundish.
!
Please note
A frozen condensate pipe can
result in faults and damage to
the boiler.
Always insulate condensate
pipes against frost.
15