Regin REGIO EEDO, Manual, Page: 38 / 108

Control functions
✓
Both cooling and fresh air demand simultaneously
The highest demand determines if the VAV output signal currently is controlled based on the cooling
setpoint and the room temperature, or the CO
2
setpoint and the CO
2
level in the room.
For information about CO
2
control, see section 2.9 .
The maximum damper airflow can be controlled by setting a maximum limit on the VAV output signal. The
minimum airflow that applies for each controller state can also be controlled by setting minimum limits on
the VAV output signal.
The damper can also be controlled based on heating demand. This is useful when the heating device that
provides the room with heat is located in the supply air duct and behind the damper that regulates the
airflow into the room. When this function is active and the heating demand increases, the damper opens
correspondingly and the distribution of heat into the room is boosted. This function is active when the
Max
limit for VAV output at heating demand configuration setting is greater than zero.
The VAV control function is enabled and the VAV control configuration settings in Application tool are
shown when one of the following controller modes is selected:
✓
H VAV
✓
C VAV
✓
VAV
✓
H C VAV
Figure 2-33 VAV control configuration settings in Application tool.
The VAV control configuration settings are described in Table 2-22 .
38 Regio Eedo manual, Rev. D