Technical data

178
Coding – Vitocontrol-S, VD2/CT3/CM2
Coding 2 (continued)
Coding in factory setting Possible change
Mixing valve circuit
AA: 2
With output reduction through temperature
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A
AA: 0 Without output reduction
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sensor aJA
AA: 1 No function
Systems/mixing valve circuit
b0: 0
*1
With remote control:
Heating mode/ reduced mode:
With outdoor reset
b0: 1 Heating mode:
With outdoor reset
Reduced mode:
With room temperature feed-back
b0: 2 Heating mode:
With room temperature feed-back
Reduced mode:
With outdoor reset
b0: 3 Heating mode/ reduced mode:
With room temperature feed-back
b1: 0 Do not adjust
b2: 8
*1
With remote control unit and for heating circuit,
operation with room temperature feed-back must
be programmed:
Room influencing factor 8
b2: 0 No room influence
b2: 1
to
b2: 31
Room influence factor adjustable from 1 to 31
b3: 0
*1
Do not adjust
Coding in factory setting Possible change
b5: 0
*1
With remote control:
Without room temperature dependent heating
circuit pump logic function
b5: 1
Heating circuit pump
ON at RT
actual
> RT
set
+ T
OFF, at RT
actual
< RT
set
+ T
T for ON T for OFF
+ 4˚C / 7˚F + 5˚C / 9˚F
b5: 2 + 3˚C / 5˚F + 4˚C / 7˚F
b5: 3 + 2˚C / 4˚F + 3˚C / 5˚F
b5: 4 + 1˚C / 2˚F + 2˚C / 4˚F
b5: 5 + 0˚C / 0˚F + 1˚C / 2˚F
b5: 6 - 1˚C / 2˚F + 0˚C / 0˚F
b5: 7 - 2˚C / 4˚F - 1˚C / 2˚F
b5: 8 - 3˚C / 5˚F - 2˚C / 4˚F
b6: 0
*1
With remote control unit and for heating circuit,
operation with room temperature feed-back must
be programmed:
Without quick heat-up/quick setback
b6: 1 With quick heat-up/quick setback (see page 131)
*1
Change coding – for system circuit A1 only for boilers without lower temperature limit – for mixing valve circuit only, if remote control
unit affects this heating circuit.
5351 340 v1.4