External Bocking/Mixer Close - Viessmann VITOCAL 300-A Installation And Service Instructions Manual

System definition control settings
External demand/mixer OPEN
No. Function of the following system components
6 M2: Heating circuit with mixer
M3: Heating circuit with mixer
Heat demand to the heat pump
7 M2/M3: Heating circuits with mixer
Heat demand to the heat pump

External bocking/mixer CLOSE

Parameter
7015
Details how the "Ext. blocking" or
"Mixer CLOSE" functions should
affect the heat pump.
!
Please note
The system frost protection
may no longer be ensured.
Access
"Device settings"
"Programming"
No. Function to the associated setting
0 M2/M3: Heating circuits with mixer
No heat pump blocking
1 M2: Heating circuit with mixer
M3: Heating circuit with mixer
No heat pump blocking
2 M2: Heating circuit with mixer
M3: Heating circuit with mixer
No heat pump blocking
3 M2/M3: Heating circuits with mixer
No heat pump blocking
4 M2/M3: Heating circuits with mixer
Heat pump blocking
5 M2: Heating circuit with mixer
M3: Heating circuit with mixer
Heat pump blocking
138
(cont.)
control mode
moves into the OPEN position
move into the OPEN position
"System definition"
y to"Ext.blocking/Miclose"
l or m
Standard setting
Setting range
Note
The parameter "Ext. blocking" takes
higher priority than "Ext. demand".
See also parameter 730C: "Set flow
temperature external demand",
page 155.
control mode
moves into the CLOSE position
control mode
control mode
moves into the CLOSE position
move into the CLOSE position
control mode
moves into the CLOSE position
control mode
4
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