Data Sheet for Product
Table Of Contents
- Figure 1. Dual Duct VAV Box with Two Inlet Flow Sensors.
- Figure 2. Dual Duct VAV Box with One Inlet and One Discharge Flow Sensor.
- Features
- Sequence of Operation
- Dual Cold
- Dual Hot
- Morning Warm-up/ Pre-Cool
- Off
- Test/Calibrate
- Occupancy Control
- Special Features
- Hardware Map – Dual Duct VAV/CV
- Wiring Diagram
- Bill of Materials
- Configuration Tables
- Control Mode Interaction Table –Dual Duct VAV with QVM
- Control Mode Interaction Table –Dual Duct CV with QVM
Document No. 588-023 Page 3 of 13
The operation of the application when the space temperature is between the heating and
cooling temperature setpoints is configurable. By default, the controller performs a distinct
switchover between minimum heating and minimum cooling conditions. If configured, the
controller can perform a crossover process where the flow setpoints are gradually adjusted
according to the space temperature between the heating and cooling setpoints.
Unoccupied Control
Figure 5. Unoccupied Control.
Cooling Mode
In Unoccupied Cooling Mode, the Predator Controller controls the space to the unoccupied
cooling temperature setpoint. A cooling demand PID resets the cold duct flow setpoint
within a configurable unoccupied range to maintain space temperature. The hot duct
maintains a configurable unoccupied flow.
Heating Mode
In Unoccupied Heating Mode, the Predator Controller controls the space to the unoccupied
heating temperature setpoint. A heating demand PID resets the hot duct flow setpoint
within a configurable unoccupied range to maintain space temperature. The cold duct
maintains a configurable unoccupied flow. The perimeter heating operation is configurable
in unoccupied mode.
Standby Control
Spaces that are not occupied on a routine basis (conference rooms, etc.) can be placed into
standby mode during normally scheduled occupancy times. This will save energy while still
ensuring the comfort of the occupants.
Cooling Mode
The Predator Controller uses the same flow operation as Unoccupied Mode but controls
the space temperature to the standby cooling setpoint. Once occupancy is detected, control
reverts to the Occupied Mode as detailed above.
Heating Mode
The Predator Controller uses the same flow operation as Unoccupied Mode but controls
the space temperature to the standby heating setpoint. The perimeter heating valve
modulates as required to control the zone temperature. Once occupancy is detected,
control reverts to the Occupied Mode as detailed above.