Viessmann Vitocrossal 300 Service Instructions For Contractors page 71

General
(cont.)
Coding in the delivered condition
3C:0 Function input DE3 at
extension EA1: Not
assigned
Possible change
DHW circulation pump run-
time adjustment: Coding
address 3d
3C:1 Function input DE3: Heat-
ing program - changeover
3C:2 Function input DE3: Exter-
nal demand with set flow
temperature.
Set flow temperature for
external demand: Code
9b.
Function, circulation pump
for cylinder heating: Cod-
ing address 5F
Function, heating circuit
pumps: Coding address
D7
3C:3 Function input DE3: Exter-
nal blocking.
Function, circulation pump
for cylinder heating: Cod-
ing address 5F
Function, heating circuit
pumps: Coding address
D7
3C:4 Function input DE3: Exter-
nal blocking with fault mes-
sage input
Function, circulation pump
for cylinder heating: Cod-
ing address 5E
Function, heating circuit
pumps: Coding address
D6
3C:5 Function input DE3: Fault
message input
3C:6 Function input DE3: Brief
operation, DHW circulation
pump (pushbutton func-
tion).
Code 2
71