Heating Circuit 1", "Heating Circuit 2", "Heating Circuit 3" Group - Viessmann VITOTRONIC300 Installation And Service Instructions Manual

Vitotronic 300, GW2B Installation and Service

"Heating Circuit 1", "Heating Circuit 2", "Heating Circuit 3" Group

Coding
Coding in the factory set condition
A0:0 Without remote control.
A1:0 Only with Vitotrol 200A:
All possible settings at the remote control can
be accessed.
A2:2 DHW tank priority applicable to heating circuit
pump and mixing valve.
A3:2 Outside temperature below 34°F (1°C):
Heating circuit pump "ON".
Outside temperature above 37°F (3°C):
Heating circuit pump "OFF".
Parameter Address A3:...
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
to
15
Possible change
A0:1
A0:2
A1:1
A2:0
A2:1
A2:3
to
A2:15
A3:-9
to
A3:15
Note: If a value below 34°F (1°C) is selected, there is a
Heating circuit pump
"ON"
14°F (-10°C)
16°F (-9°C)
17.5°F (-8°C)
19.5°F (-7°C)
21°F (-6°C)
23°F (-5°C)
25°F (-4°C)
26.5°F (-3°C)
28.5°F (-2°C)
30°F (-1°C)
32°F (0°C)
34°F (1°C)
to
57°F (14°C)
With Vitotrol 200A; automatic recognition.
With Vitotrol 300A or Vitohome 300;
automatic recognition.
Only party mode can be set at the remote
control.
Without DHW tank priority applicable
to heating circuit pump and mixing valve.
DHW tank priority applies only to the mixing
valves.
Modulating priority applied to mixing valve,
i.e. the heating circuit receives a reduced
amount of heat.
Heating circuit pump "ON/ OFF"
(see the following table).
risk that pipes outside the thermal envelope of the
building could freeze up.
The standby mode in particular should be taken into
consideration, e.g. during holidays.
"OFF"
17.5°F (-8°C)
19.5°F (-7°C)
21°F (-6°C)
23°F (-5°C)
25°F (-4°C)
26.5°F (-3°C)
28.5°F (-2°C)
30°F (-1°C)
32°F (0°C)
34°F (1°C)
35.5°F (2°C)
37.5°F (3°C)
to
61°F (16°C)
Code 2
115