Viessmann Vitodens 300 Service Instructions Manual page 35

Further details regarding the individual steps
Adjusting the set room temperature
Standard room temperature:
Example 1: Modifying the standard
room temperature from 20 °C to 26 °C
A Boiler water or flow temperature
in °C
B Outside temperature in °C
C Set room temperature in °C
D Heating circuit pump OFF
E Heating circuit pump ON
Initial start-up, inspection, maintenance
(cont.)
1. Select a heating circuit:
Press a.
&
1r flashes on the display.
&
Select heating circuit A1 (heating
circuit without mixer):
Press d.
&
Select heating circuit M2 (heating
circuit with mixer):
– Press a.
– 2r flashes on the display.
– Press d.
2. Adjust the set day temperature with
rotary selector ts.
The value will be automatically
adopted after approx. 2 seconds.
Accordingly, the heating curve is
adjusted along the set room tem-
perature axis, which results in mod-
ified start/shutdown characteristics
of the heating circuit pumps, if the
heating circuit pump logic is acti-
vated.
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