Viessmann VITODENS 343-F WS4A Installation And Service Instructions Manual page 57

Further details regarding the individual steps
Adjusting the set room temperature
Standard room temperature
Example 1: Adjustment of standard
room temperature from 20 to 26 °C
A Boiler water temperature 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"
Press the following keys:
1. a "1r" flashes.
2. d to select heating circuit A1
(heating circuit without mixer)
or
3. a "2r" flashes.
4. d to select heating circuit with
mixer M2.
Commissioning, inspection, maintenance
(cont.)
5. Adjust the set day temperature with
rotary selector "ts".
The value will be automatically
accepted after approx. 2 s.
Accordingly, the heating curve is
adjusted along set room tempera-
ture axis C, which results in modi-
fied start/stop characteristics of the
heating circuit pumps if heating cir-
cuit pump logic function is active.
Reduced room temperature
Example 2: Adjustment of reduced
room temperature from 5 °C to 14 °C
A Boiler water temperature 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"
Press the following keys:
1. a "1r" flashes.
57