Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual page 93

"General"/group 1
Coding in the delivered condition
3C:0 Function input DE3 at ex-
tension EA1:
No function
3d:5 DHW circulation pump
runtime for brief opera-
tion: 5 min
3E:0 Internal circulation pump
stays in control mode at
signal "External block-
ing"
3F:0 Internal circulation pump
stays in control mode at
signal "External de-
mand"
(cont.)
Possible change
3C:1
3C:2
3C:3
3C:4
3C:5
3C:6
3d:1
to
3d:60
3E:1
3E:2
3F:1
3F:2
Code 2
Heating program - change-
over
External demand with set
flow temperature.
Set value setting: Coding
address "9b" in this group.
Internal circulation pump
function: Coding address
"3F" in this group.
External blocking.
Internal circulation pump
function: Coding address
"3E" in this group.
External blocking with fault
message input
Internal circulation pump
function: Coding address
"3E" in this group.
Fault message input
Brief operation, DHW cir-
culation pump (pushbutton
function).
DHW circulation pump run-
time adjustment: Coding
address "3d" in this group
DHW circulation pump run-
time adjustable from 1 to
60 min
Internal circulation pump
stops at signal "External
blocking"
Internal circulation pump
starts at signal "External
blocking"
Internal circulation pump
stops at signal "External
demand"
Internal circulation pump
starts at signal "External
demand"
93