External Operating Mode Changeover Effect - Viessmann VITOCAL 300-A Installation And Service Instructions Manual

System definition control settings
External operating mode changeover heating . . .
Note
The parameter "Ext. blocking" takes
higher priority than "Ext. demand".
Press the following keys:
1. "Device settings".
2. "Programming".
3. "System definition".
Value Affects the following system components
0 DHW heating
1 Heating circuit without mixer A1
2 Heating circuit without mixer A1, DHW heating
3 Heating circuit with mixer M2
4 Heating circuit with mixer M2, DHW heating
5 Heating circuit without mixer A1
Heating circuit with mixer M2
6 Heating circuit without mixer A1
Heating circuit with mixer M2, DHW heating
7 Heating circuit with mixer M2
Heating circuit with mixer M3
8 Heating circuit with mixer M2
Heating circuit with mixer M3, DHW heating
9 Heating circuit without mixer A1
Heating circuit with mixer M2
Heating circuit with mixer M3
10 Heating circuit without mixer A1
Heating circuit with mixer M2
Heating circuit with mixer M3, DHW heating
11 No heating circuit or DHW changeover. Function "Ext. demand" only.

External operating mode changeover effect

Selection of the operating mode for
the components selected in "Op.
mode change HC" after an external
operating mode changeover.
136
(cont.)
4. y/x for "Op. mode change
HC" (7011).
5. l/m for the selected value.
6. "BACK" to confirm.
Delivered condition:
Setting range:
Press the following keys:
1. "Device settings".
11
0 to 11