Vaillant VR 81 Supplement Manual page 16

4 Operation
25 °
20 °
Set back
temperature
15 °
25 °
1
20 °
15 °
Fig. 4.4 Duration of validity of target value changes
(here: Target room temperature)
12
Period
08:00 12:00 Time
2 3
4
Period
08:00 12:00
Time
Fig. 4.4 shows a programmed time window with
corresponding target room temperature (21 °C).
In the lower diagram, the value of the target room
temperature at (1) is changed (20 °C). The control system
uses this target room temperature until the start of the
time window.
From this point (2) the control system uses the target
room temperature of the time window (21 °C).
At (3) the target room temperature is changed (17 °C).
The control system uses this value up to the end of the
time window (4).
After the time window, the control system uses the night
set back temp (15 °C).
(You can find more information on time windows in the
operating manual of the VRC 430 controller.)
Operating manual VR 81 0020044392_00