Viessmann VITODENS 242-F Installation And Service Instructions Manual page 100

Code 2
"General"
(cont.)
Coding in the delivered condition
3C:0 Function input DE3 at ex-
tension EA1:
No function
100
Possible change
Internal circulation pump
function: Coding address
"3E" in this group.
3b:4 Function input DE2: Exter-
nal blocking with fault mes-
sage input
Internal circulation pump
function: Coding address
3E
3b:5 Function input DE2: Fault
message input
3b:6 Function input DE2: Brief
operation, DHW circulation
pump (pushbutton func-
tion).
DHW circulation pump run-
time adjustment: Coding
address 3d
3C:1 Operating program
changeover
3C:2 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.
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
3C:6 Brief operation, DHW cir-
culation pump (pushbutton
function).