Viessmann VITOCAL 300 Installation And Service Instructions Manual page 47

Further details regarding the individual steps
Selecting a system design
Commissioning, inspection, maintenance
(cont.)
5. Select language:
Select area marked A in dia-
&
gram using y.
Press ?.
&
& Select the required language
using y.
& Confirm language selection using
O.
Press O and n several times
&
to return to "Main menu".
1. Open the programming unit flap
(see page 57 and operating instruc-
tions) and briefly and simulta-
neously press the keys shown in
the diagram.
Note
Alternative adjustment options for
the system design, see page 80.
2. Only if the code request is dis-
played:
Enter the code for heating contrac-
tors ("SERVICE"; for details see
page 76).
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