Data Sheet for Product

Document No. 588-894 Page 3 of 11
Pre-cool
During unoccupied periods, if the Predator is commanded to pre-cool mode, it applies the occupied
cooling setpoint (to restore comfort conditions) and the unoccupied minimum flow (because the
occupants are not present).
The reheat coil is off.
Perimeter heat is off.
Lighting is off.
Calibrate (Test)
Recalibration will occur in test mode when RecalExtEn is set to TRUE. Once commanded to test
mode, the controller remains in this mode (even if it is commanded to another mode) until the
recalibration is complete. This process takes approximately two times the damper motor travel time.
The Predator closes the primary air damper and calibrates the airflow sensor.
The reheat coil is off.
If perimeter heat is active, it continues to operate.
Lighting is on or off according to occupancy.
Off
The Predator closes the primary air damper, and turns off the reheat coil, and turns off perimeter
heat.
Lighting is off.
Occupancy Control
Occupancy Mode
The Predator controller defaults to the occupied mode of operation. Upon receipt of the 4-
state LonMark occupancy override (nviOccManCmd), the controller will switch to the
appropriate mode of operation. A brief summary of each mode follows below:
LonMark
Occupancy State Mode Description
(0) Occupied Controller in Occupied mode and uses Occupied setpoints.
(1) Unoccupied Controller in Unoccupied mode and uses Unoccupied
setpoints.
(2) Bypass Controller temporarily in Occupied mode and uses Occupied
setpoints until the Bypass Time elapses. Controller then
returns to previous occupancy state.
(3) Standby Controller in Standby mode and uses Standby setpoints.
If a LonMark compatible occupancy schedule input (nviOccSchedule) is used, the
controller will use the modes and setpoints as shown above. This will allow the
Predator controller to utilize the scheduling properties of other devices on the
LonTalk Network.
The occupancy signal could also come from a time clock, wall switch, or occupancy
sensor physically wired to one of the inputs of the Predator controller. This
occupancy signal could then be shared with other controllers via the Lon Network.