Viessmann Vitodens 333 Service Instructions Manual page 37

Further details regarding the individual steps
Reduced room temperature:
Example 2: Changing the 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
Initial start-up, inspection, maintenance
(cont.)
1. In case of two heating circuits –
select the relevant one:
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. Calling up the set night temperature
with E.
3. Change this value with a and b.
4. Confirm the set value with d.
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