Viessmann Vitodens 200-W Service Instructions Manual page 60

Coding 2
Heating Circuit 1, 2 and 3
Select "Heating circuit ..."
Coding
Coding in the factory setting
A0:0
A1:0
A2:2
A3:2
Note: When selecting a value below 1°C, there is a risk of pipes outside the thermal envelope of the building freezing
up. The standby mode in particular should be taken into consideration, e.g. during holidays.
Parameter address A3:...
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
to
15
60
Without remote control
All possible settings at the
remote control can be accessed
DHW tank priority applicable to
heating circuit pump and mixing
valve
Outside temperature below
34°F (1°C): Heating circuit pump
"ON"
Outside temperature above
37°F (3°C): Heating circuit
pump "OFF"
Heating circuit pump
"ON"
14°F (-10°C)
15.8°F (-9°C)
17.6°F (-8°C)
19.4°F (-7°C)
21.2°F (-6°C)
23°F (-5°C)
24.8°F (-4°C)
26.6°F (-3°C)
28.4°F (-2°C)
32.2°F (-1°C)
32°F (0°C)
33.8 to 57.2°F
(1 to 14°C)
Vitodens 200-W B2HA 80, 100 Service
Possible change
A0:1 With Vitotrol 200A (automatic
recognition).
A0:2 With Vitotrol 300A or Vitohome
300 (automatic recognition).
A1:1 Only party mode can be set at the
remote control (only for Vitotrol
200A).
A2:0 Without DHW tank priority applied
to heating circuit pump and mixing
valve.
A2:1 DHW tank priority only applicable
to mixing valve.
A2:3 Reduced priority applied to mixing
to valve (the heating circuit receives
A2:15 a reduced amount of energy).
A3:-9 Heating circuit pump "ON/OFF"
to (see following table).
A3:15
"OFF"
17.6°F (-8°C)
19.4°F (-7°C)
21.2°F (-6°C)
23°F (-5°C)
24.8°F (-4°C)
26.6°F (-3°C)
28.4°F (-2°C)
32.2°F (-1°C)
32°F (0°C)
33.8°F (1°C)
35.6°F (2°C)
37.4 to 60.8°F
(3 to 16°C)