Fan status defaults to selected to add a binary input for the supply fans. If Dual fans are selected, two binary inputs are added without any additional selections. The Supply Fan status determines the loss of airflow status for the unit. You may select to restart the unit automatically or manually after the loss of airflow or after the other unit alarm is cleared. If you select Manual Restart, a binary input or network input is added to the system. This input must be commanded to restart the system.