Control functions
When the CO
2
level in the room is lower than the CO
2
setpoint and no fresh air demand exists,
VAV signal
is at its minimum.
Figure 2-42 CO
2
control behaviour.
VAV signal
Output
Max: 100%
CO
2
setpoint
Min: 0%
CO
2
level in room
100%
0%
Fresh air demand
Min VAV: 20%
48
Regio
Ardo
manual, Rev. D