Viessmann Vitocal 300-G Installation And Service Instructions For Contractors page 109

Further details regarding the individual steps
Commissioning without the commissioning assistant
Activating the service menu
The service menu can be enabled from
any menu.
Press OK + å simultaneously for
approx. 4 s.
Disabling the service menu
The service menu remains active until it
is disabled with "Terminate service?",
or if no operation takes place for 30
minutes.
Parameter setting, using example
"System scheme"
To set a parameter, first select the
parameter group and then the parame-
ters.
All parameters are displayed as plain
text. A parameter code is also assigned
to each parameter.
Service menu:
1. Press OK + å simultaneously for
approx. 4 s.
2. Select "Coding level 1".
Commissioning, inspection, maintenance
(cont.)
3. Select parameter group: "System
definition"
4. Select parameter: "System scheme
7000"
5. Adjust system scheme: "6"
Alternatively, if the service menu was
already activated:
Extended menu
1. å
2. "Service"
3. Select "Coding level 1".
4. Select parameter group: "System
definition"
5. Select parameter: "System scheme"
6. Confirm parameter code: "7000"
7. Adjust system scheme: "6"
Required parameters for components
connected on site
Detailed explanations regard-
ing the parameters
Service instructions for Vitotronic
200 heat pump control unit
109