Viessmann Vitodens 222-F Installation And Service Instructions For Contractors page 64

Codes
Coding level 2
(cont.)
Coding in the delivered condition
3b:0 Function of DE2 input at EA1 ex-
tension:
No function
3C:0 Function of DE3 input at EA1 ex-
tension:
No function
64
Possible change
Set value setting: Coding address
"9b" in this group.
Internal circulation pump function:
Coding address "3F" in this group.
3A:3 External blocking.
Internal circulation pump function:
Coding address "3E" in this group.
3A:4 External blocking with fault message
input.
Internal circulation pump function:
Coding address "3E" in this group.
3A:5 Fault message input
3A:6 Brief operation of DHW circulation
pump (pushbutton function).
Adjustment of DHW circulation
pump runtime: Coding address "3d"
in this group.
3b:1 Heating program changeover
3b:2 External demand with set flow tem-
perature.
Set value setting: Coding address
"9b" in this group.
Internal circulation pump function:
Coding address "3F" in this group.
3b:3 Function of DE2 input: External
blocking.
Internal circulation pump function:
Coding address "3E" in this group.
3b:4 Function of DE2 input: External
blocking with fault message input
Internal circulation pump function:
Coding address 3E
3b:5 Function of DE2 input: Fault mes-
sage input
3b:6 Function of DE2 input: Brief opera-
tion of DHW circulation pump (push-
button function).
Adjustment of DHW circulation
pump runtime: Coding address 3d
3C:1 Heating program changeover
3C:2 External demand with set flow tem-
perature.
Set value setting: Coding address
"9b" in this group.
Internal circulation pump function:
Coding address "3F" in this group.
3C:3 External blocking.
Internal circulation pump function:
Coding address "3E" in this group.
3C:4 External blocking with fault message
input
Internal circulation pump function:
Coding address "3E" in this group.
3C:5 Fault message input