U NIT C ONFIGURATIONS
This screen is used to configure the HMI and the type of unit installed. Unit name and time can also
be set on this screen.
M OTOR S ETTINGS
By default the motor is started by pressing the green double pushbutton located next to the touch screen.
The spe ed of the motor is controlled by the VFD’s PID system to maintain constant airflow/duct pressure.
Yet alternatives are available to better meet the needs of each user.
Economizer mode is only available if an economizer package was purchased with the unit. When in
Economizer mode, the motor will set at an idle speed until it has detected activity. If no activity is detected
after a period of time, the motor will stop. When the unit receives a signal, the motor will speed up
depending on the Speed Source. If in HMI, the motor will ramp up to the speed set in the Manual VFD
Frequency box. If Speed Source is set to PID, the motor will ramp up depending on the pressure detected
in the duct.
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