Viessmann VITODENS 222-F Installation And Service Instructions Manual page 75

General/Group "1"
Coding in the delivered condition
3A:0 Function input DE1 at
extension EA1: No func-
tion
(cont.)
Possible change
3A:1
3A:2
3A:3
3A:4
3A:5
3A:6
Code 2
Function input DE1: Heat-
ing program changeover
Function input DE1: Exter-
nal demand with set flow
temperature.
Function internal circula-
tion pump: Coding address
3F
Function input DE1: Exter-
nal blocking.
Function internal circula-
tion pump: Coding address
3E
Function input DE1: Exter-
nal blocking with fault mes-
sage input
Function internal circula-
tion pump: Coding address
3E
Function input DE1: Fault
message input
Function input DE1: Brief
operation, DHW circulation
pump (pushbutton func-
tion).
DHW circulation pump run-
time adjustment: Coding
address 3d
75