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Coding
Coding Level 2
(continued)
Overview of coding addresses
Coding (factory default setting)
General
9F:8
Differential temperature 8 K; only in
conjunction with the mixing valve circuit
Boiler circuit, mixing valve circuit
A0:0
A0:0
Without remote control
Without remote control
DHW priority (heating circuit without mixing valve, A1)
A2:2
DHW priority to heating circuit pump
DHW priority (heating circuit with mixing valve, M2)
A2:2
DHW priority applicable to heating circuit
pump and mixing valve
pump and mixing valve
A3:2
Outdoor temperature below 34°F / 1°C:
Heating circuit pump "ON"
Outdoor temperature above 37°F / 3°C:
Heating circuit pump "OFF"
WARNING
When selecting a value below 34°F /
1°C, there is a risk of pipes outside
the thermal envelope of the building
being damaged by frost.
The standby mode, in particular,
should be taken into consideration,
e.g. during holidays.
46
(continued)
Parameter
coding address
coding address
A3:...
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2 to 15
Possible change
9F:0
Differential temperature adjustable from 0 to
to
40 K (0 to 72°F)
9F:40
A0:1
With Vitotrol 200 (automatic recognition)
A0:2
With Vitotrol 300 (automatic recognition)
A2:0
Without DHW priority to heating circuit pump
A2:0
Without DHW priority applicable to heating
circuit pump and mixing valve
A2:1
DHW priority only applicable to mixing valve
A2:3
Reduced priority applied to mixing valve (the
to
heating circuit receives a reduced amount of
A2:15
energy)
A3:-9
Heating circuit pump "ON/OFF" (see the
to
following table)
A3:15
Heating circuit pump
"ON" at
14°F / -10°C
16°F / -9°C
18°F / -8°C
20°F / -7°C
21°F / -6°C
23°F / -5°C
25°F / -4°C
27°F / -3°C
28°F / -2°C
30°F / -1°C
32°F / 0°C
34 to 57°F /
1 to 14°C
"OFF" at
18°F / -8°C
20°F / -7°C
21°F / -6°C
23°F / -5°C
25°F / -4°C
27°F / -3°C
28°F / -2°C
30°F / -1°C
32°F / 0°C
34°F / 1°C
36°F / 2°C
37 to 61°F /
3 to 16°C
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