Technical data
176
Coding – Vitocontrol-S, VD2/CT3/CM2
Coding 2
(continued)
Coding in factory setting Possible change
General (continued)
9b: 70
Set minimum supply temperature for external
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9b: 0 Input aVH disabled
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demand (input aVH):
70˚C / 158˚F
9b: 1
to
9b:127
Set temperature adjustable from 1 to 127˚C / 34 to
261˚F
9C: 20 Monitoring LON participants:
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9C: 0 No monitoring
9
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0
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:
When there is no response from a participant,
values defaulted inside control unit continue to be
used for a further 20 min. Only then will a fault
message be triggered.
9C: 5
to
9C: 60
Time adjustable from 5 to 60 minutes
9d: 0 Without Input Module
0 to 10V
9d: 1 With Input Module 0 - 10V;
will be recognized automatically
9F: 8 With mixing valve circuit:
Differential temperature 8˚C / 14.4˚F
9F: 0
to
9F: 40
Differential temperature adjustable from 0 to 40˚C /
0 to 72˚F
System circuit/mixing valve circuit
A0: 0 Without remote control A0: 1 With Vitotrol 200
A0: 2 With Vitotrol 300
A2: 2
With DHW tank priority applicable to heating circuit
pump and mixing valve
A2: 0 Without DHW tank priority applicable to heating
circuit pump and mixing valve
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A2: 1 With DHW tank priority for mixing valve:
Mixing valve is closed during DHW heating; heating
circuit pump operates
A2: 3
to
A2: 15
Do not adjust
A3: 2 Outdoor temp. below 1˚C / 34˚F:
Heating circuit pump ON
Outdoor temp. above 3˚C / 37˚F:
Heating circuit pump OFF
For settings below 1˚C / 34˚F pipes outdoor
thermal insulation shell of building can freeze up,
particularly during standby mode, e.g. during
holidays.
A3: –9
A3: –8
A3: –7
A3: –6
A3: –5
A3: –4
A3: –3
A3: –2
A3: –1
A3: 0
A3: 1
A3: 2
to
A3: 15
Heating circuit pump
(see back of manual for conversion chart)
ON at OFF at
–10˚C –8˚C
– 9˚C –7˚C
– 8˚C –6˚C
– 7˚C –5˚C
– 6˚C –4˚C
– 5˚C –3˚C
– 4˚C –2˚C
– 3˚C –1˚C
– 2˚C 0˚C
– 1˚C 1˚C
0˚C 2˚C
1˚C 3˚C
to
14˚C 16˚C
5351 340 v1.4