Regio Midi manual
Chapter 7
Control modes
39
Minimum limit on analogue 0…10 V actuators
The minimum limitation on the analogue output is only active in Bypass, Occupied and
Standby. If the operating mode is Unoccupied or Off, the damper will be closed (0 V on the
analogue output). See table below:
Operating mode
Min. limit
VAV output (Y2)
Bypass
20 %
2 V
Occupied
20 %
2 V
Standby
20 %
2 V
Unoccupied
20 %
0 V
Off
20 %
0 V
Many damper actuators have a working range of 2...10 V. This means that to set a minimum
limitation of 20 %, the min. limitation in the Regio will have to be set to 36 % .
Forced ventilation depending on the heating/cooling
output
At 100 % heating or cooling output, forced ventilation can be activated. The function is
intended to be used when the heater or cooler is located in the ventilation duct and the system
is struggling to reach the setpoint. When the cooling or heating output reaches 100 %, the
controller will switch to control mode Bypass.
The controller will remain in forced ventilation throughout the set Bypass time (FS=2h).
Three different alternatives can be selected for setting the function forced ventilation:
•
Not active (FS)
•
Forced ventilation at 100% heating or cooling output
•
Forced ventilation at 100% cooling output
