External Blocking/Mixer Close - Viessmann Vitocal 300-G BW Installation And Service Instructions Manual

System definition control settings
External demand/mixer OPEN
No. Function of the following system components
4 M2/M3: Heating circuits with mixer – control mode
Heat demand to the heat pump
5 M2: Heating circuit with mixer – moves into the OPEN position
M3: Heating circuit with mixer - control mode
Heat demand to the heat pump
6 M2: Heating circuit with mixer – control mode
M3: Heating circuit with mixer – moves into the OPEN position
Heat demand to the heat pump
7 M2/M3: Heating circuits with mixer – move into the OPEN position
Heat demand to the heat pump

External Blocking/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 – control mode
No heat pump blocking
1 M2: Heating circuit with mixer – moves into the CLOSE position
M3: Heating circuit with mixer – control mode
No heat pump blocking
138
(cont.)
■ "System definition"
■ y to"Ext.blocking/Miclose"
■ l or m
Standard setting
Setting range
Note
■ The parameter "Ext. Blocking" takes
higher priority than "External
demand".
■ See also parameter 730C: "Set flow
temperature external demand",
page 155.
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