Viessmann VITOCAL 300-G Installation And Service Instructions Manual page 172

Control unit settings by the contractor
Control unit settings by the contractor
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"
Reinstating the delivered condition (Reset)
Service menu:
1. Press OK + å simultaneously for
approx. 4 s.
2. "Coding level 1"
3. "Standard setting"
4. "All groups"
or
Select required parameter group (e.g.
"System definition").
172
(cont.)
5. Select parameter: "System scheme"
6. Confirm parameter code: "7000"
7. Adjust system scheme: "2"
Note
The parameters shown depend on the
current device settings.