Technical data

Vitodens 200-W B2HA 19, 28, 35 Service
5683 702 - 07
50
Coding 2
General (continued)
Coding in the factory setting Possible change
3C:0 Function input DE3 at extension
EA1: Not assigned
3C:1 Function input DE3: Heating
program - changeover.
3C:2 Function input DE3: External
demand with set flow
temperature.
Flow temperature setting:
Coding address 9B.
Internal circulation pump function:
Coding address 3F.
3C:3 Function input DE3: External
blocking.
Internal circulation pump function:
Coding address 3E.
3C:4 Function input DE3: External
blocking with fault message input
Internal circulation pump function:
Coding address 3E.
3C:5 Function input DE3: Fault
message input.
3C:6 Function input DE3: Brief
operation, DHW recirculation
pump (pushbutton function).
DHW recirculation pump runtime
adjustment: Coding address 3D.
3D:5 DHW recirculation pump
runtime for brief operation: 5
minutes
3D:1
to
3D:60
DHW recirculation pump off-delay
adjustable from 1 to 60 minutes.
3E:0 Internal circulation pump
stays in control mode at
signal “External blocking”
3E:1 Internal circulation pump stops
at signal “External blocking”.
3E:2 Internal circulation pump starts
at signal “External blocking”.
3F:0 Internal circulation pump
stays in control mode at
signal “External demand”
3F:1 Internal circulation pump stops
at signal “External demand”.
3F:2 Internal circulation pump starts
at signal “External demand”.
4D:0
Function input lH: Room
thermostat (Vitotrol 100) for
constant temperature control
4D:1 External demand.
4D:2 External blocking.