Viessmann Vitoladens 300-W Service Instructions For Contractors page 48

Codes
Code 2
(cont.)
Coding in the delivered condition
Boiler circuit, mixer circuit
A0:0 Without remote control
A3:2 Outside temperature
below 1 °C: Heating cir-
cuit pump ON
Outside temperature
above 3 °C: Heating cir-
cuit pump OFF
Note
If a value is selected
below 1 °C, there is a risk
of pipes outside the ther-
mal envelope of the build-
ing freezing up. The
standby mode, in particu-
lar, should be taken into
consideration, e.g. during
holidays.
Parameters
Address A3:...
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
to
15
48
Possible change
A0:1
A0:2
A3:-9
to
A3:15
Heating circuit pump
ON at
-10 °C
-9 °C
-8 °C
-7 °C
-6 °C
-5 °C
-4 °C
-3 °C
-2 °C
-1 °C
0 °C
1 °C
to
14 °C
With Vitotrol 200 (auto-
matic recognition)
With Vitotrol 300 (auto-
matic recognition)
Heating circuit pump ON/
OFF (see the following
table)
OFF at
-8 °C
-7 °C
-6 °C
-5 °C
-4 °C
-3 °C
-2 °C
-1 °C
0 °C
1 °C
2 °C
3 °C
16 °C