Viessmann C3TB, Installation And Service Instructions For Contractors

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27
Note
Fit safety assembly
A
on site immediately upstream
of the cold water connection on the Vitovalor 300-P.
No shut-off equipment may be installed between the
safety assembly and the Vitovalor 300-P. Install a dis-
charge line
C
with constant fall and in a frost-free
environment.
Safety valve
P
Fig. 22
Note
Never
connect the safety valve of the DHW cylinder to
hose
P
. Never change the location of hose
P
(it acts
as vent).
Balanced flue terminal
Do not carry out commissioning until the following
conditions are met:
■ Free passage through the flue gas pipes.
■ Flue system with positive pressure is gas-tight.
■ Apertures for ensuring sufficient combustion air sup-
ply are open and cannot be closed off.
■ Applicable regulations on installing and commission-
ing flue systems have been followed.
Danger
Leaking or blocked flue systems or an insuffi-
cient supply of combustion air cause life threat-
ening poisoning due to carbon monoxide in the
flue gas.
Ensure the flue system functions correctly. Aper-
tures for combustion air supply must not be able
to be closed off.
Route all horizontal sections of the flue pipe with a
constant fall of 3°.
Flue system installation instructions
Installation sequence
Installing the Vitovalor 300-P
(cont.)
5775 636 GB
Installation