Viessmann Vitocrossal 300 Series Service Instructions Manual page 64

Coding 2
General
(continued)
Coding in the factory setting
3A:0
3B:0
64
Function input DE1 at extension
EA1: Not assigned
Function input DE2 at extension
EA1: Not assigned
Vitocrossal 300 CU3A 26 to 199 Service
Possible change
3A:1 Function input DE1: Heating
program - changeover.
3A:2 Function input DE1: External
demand with set supply
temperature. Supply temperature
setting: Coding address 9B.
Internal circulation pump
function: Coding address 3F.
3A:3 Function input DE1: External
blocking. Internal circulation pump
function: Coding address 3E.
3A:4 Function input DE1: External
blocking with fault message input
Internal circulation pump
function: Coding address 3E.
3A:5 Function input DE1: Fault
message input.
3A:6 Function input DE1: Brief
operation, DHW recirculation
pump (push button function
DHW recirculation pump runtime
adjustment: Coding address 3D.
3A:7 Input zone circuit 1, constant
3A:8 Input zone circuit 1, weather
compensated
3B:1 Function input DE2: Heating
program - changeover.
3B:2 Function input DE2: External
demand with set supply
temperature. Supply temperature
setting: Coding address 9B.
Internal circulation pump function:
Coding address 3F.
3B:3 Function input DE2: External
blocking. Internal circulation pump
function: Coding address 3E.
3B:4 Function input DE2: External
blocking with fault message input
Internal circulation pump function:
Coding address 3E.
3B:5 Function input DE2: Fault
message input.
3B:6 Function input DE2: Brief
operation, DHW recirculation
pump (push button function).
DHW recirculation pump runtime
adjustment: Coding address 3D.
3A:7 Input zone circuit 1, constant
3A:8 Input zone circuit 1, weather
compensated