Viessmann VITOTRONIC 300 Installation And Service Instructions Manual page 88

Code 2, Vitotronic 300-K
"General" Group
Coding in the factory set condition
4D:1
Connection at plug sL:
Shunt pump.
4E:1
Connection at plug gSA1:
3-way mixing valve for return temperature
control.
4F:5 Run-on time, shunt or distribution pump 5 min.
54:0 Without solar thermal system.
5B:0 Without extension EA1.
5C:0
Function output aBJ at extension EA1:
Central fault message.
5D:0 Function input DE1 at extension EA1:
No function.
5E:0 Function input DE2 at extension EA1:
No function.
88
(continued)
Vitotronic 300, GW5B & MW1B Installation and Service
Possible change
4D:0 Distribution pump.
4E:2 Motor for 3-way mixing valve, primary store
system.
4F:0 No pump run-on.
4F:1 Run-on time adjustable from 1 to 60 min.
to
4F:60
54:1 With Vitosolic 100; automatic recognition.
54:2 With Vitosolic 200; automatic recognition.
54:3 With solar control module, type SM1, without
auxiliary function; automatic recognition.
54:4 With solar control module, type SM1, with
auxiliary function, e.g. central heating backup;
automatic recognition.
5B:1 With extension EA1; automatic recognition.
5C:1 Accessories pump.
5C:2 No function.
5C:3 Heating circuit pump A1 is switched to low
speed (reduced mode).
5C:4 Heating circuit pump M2 is switched to low
speed (reduced mode).
5C:5 Heating circuit pump M3 is switched to low
speed (reduced mode).
5D:1 Heating program changeover.
5D:2 External demand with minimum set supply
temperature.
Selection of set value in coding address "9B"
in the "General" group.
5D:3 External blocking.
5D:4 External blocking with fault message.
5D:5 Fault message input.
5D:6 Brief operation, DHW circulation pump
(pushbutton function).
Setting of runtime for DHW circulation pump
in coding address "12" in the "General" group.
5E:1 Heating program changeover.
5E:2 External demand with minimum set supply
temperature.
Selection of set value in coding address "9B"
in the "General" group.
5E:3 External blocking.
5E:4 External blocking with fault message.
5E:5 Fault message input.
5E:6 Brief operation, DHW circulation pump
(pushbutton function).
Setting of runtime for DHW circulation pump in
coding address "12" in the "General" group.