Viessmann Vitotronic 100 GC1 Installation And Service Instructions Manual page 162

Coding – Vitotronic 300-K, MW1S
Coding 2
(cont.)
Coding in factory setting
System circuit/mixing valve circuit
A0: 0 Without remote control
A2: 2 With DHW tank priority applicable to heating circuit
pump and mixing valve pump and mixing valve
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.
A4: 0 With frost protection
162
Possible change
A0: 1 With Vitotrol 200
A0: 2 With Vitotrol 300
A2: 0 Without DHW tank priority applicable to
heating circuit pump and mixing valve
A2: 1 With DHW tank priority for mixing valve:
Mixing valve is closed during DHW heating;
heating circuit pump operates
A2: 3 Do not adjust
to
A2: 15
Heating circuit pump
(see back of manual for conversion chart)
A3: –9 ON at OFF at
A3: –8 –10 ˚C –8 ˚C
A3: –7 – 9 ˚C –7 ˚C
A3: –6 – 8 ˚C –6 ˚C
A3: –5 – 7 ˚C –5 ˚C
– 6 ˚C –4 ˚C
A3: –4
A3: –3 – 5 ˚C –3 ˚C
A3: –2 – 4 ˚C –2 ˚C
A3: –1 – 3 ˚C –1 ˚C
– 2 ˚C 0 ˚C
A3: 0
A3: 1 – 1 ˚C 1 ˚C
A3: 2 0 ˚C 2 ˚C
to 1 ˚C 3 ˚C
A3: 15 to
14 ˚C 16 ˚C
A4: 1 No frost protection
Adjustment only possible if coding A3 : –9 is set.
Please observe note regarding coding
address A3.