Viessmann VITOCAL 300-A Installation And Service Instructions Manual page 111

Further details regarding the individual steps
Calling up the commissioning assistant
A ON/OFF switch
B Fault indicator (red)
C ON indicator (green)
!
Please note
Incorrect operation at the con-
tractor level can result in
damage to the appliance and
the heating system. A modified
value will be accepted automa-
tically.
Always observe the installation
instructions; failure to observe
these will void your warranty
rights.
Commissioning, inspection, maintenance
(cont.)
D Programming unit
E Key 6
F "Standard display" key
1. Start the system at ON/OFF switch
A.
Progress bar "Check System"
appears.
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