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Unit Operation
Auto-Discrete Backup Spray
System
EcoFlex™ Controls
Operation
EcoFlex™ Controls Operation
TrilliumSeries™ Adiabatic Products are furnished standard with state of the art controls
that provide efficient year round performance. Each unit is shipped with custom controls
logic that reduces energy consumption and optimizes water usage. With preset controls, the
system is programmed and ready to operate upon arrival from the factory.
Below are optional controls packages available at time of ordering:
• General Alarm: The TrilliumSeries™ Adiabatic Product provides a normally open contact
that notifies of any trouble with the unit by closing its contact.
– Pump Alarm: Occurs when the pump is commanded on but does not start.
– Fan Alarm: Occurs when the fan produces an alarm in its controller and communicates
that back to the TrilliumSeries™ Adiabatic Product controller.
– Make-up Valve Alarm (No Water): Occurs when the make up valve is open ,and the
unit does not fill up with water.
– Air Temp Alarm: Occurs when the outside air temperature sensor reading is out of
range.
– Pressure Sensor Alarm (Optional Head Pressure Control Unit): Occurs when the
pressure sensor reading is out of range.
– High Head Pressure Alarm (Optional Head Pressure Control Unit): Occurs when the
head pressure read by the sensor is above the set point.
– Clean Conductivity Sensor (Optional Head Pressure Control Unit): Occurs every six
months to remind the operator to clean the conductivity sensor. If this error is not
cleared (and the sensor is not cleaned), the unit will revert back to the standard drain
cycle routine.
• Water Monitoring Package: The TrilliumSeries™ Adiabatic Product can monitor the water
quality so that water is only bled out when needed. This package also comes with a
water consumption meter that can be set for a defined interval of time, up to 2 months.
The optional Auto-Discrete Backup Spray System can be added to this package only.
• Energy Package: The TrilliumSeries™ Adiabatic Product can be ordered with a sensor
that monitors the amount of power consumed by the unit in Watts. The information will
be displayed in the main screen and will be broken down per fan. Also, other information
will be provided regarding the fans including motor temperature, RPM, and current
drawn. The last screen will provide a total power consumption value of the whole unit.
• Communications Package: The TrilliumSeries™ Adiabatic Product can be ordered with
a communications card; either BACnet or ModBus over BACnetIP or RS485. This option
allows full control of the unit and the ability to monitor alarms. The EcoFlex™ Controls
communication must be coordinated with your Building Management System (by
others).
• Head Pressure Control Package: The TrilliumSeries™ Adiabatic Product can regulate the
fan speed by monitoring the refrigerant inlet pressure. This option uses a pressure sensor
which is furnished by BAC but installed by others in the field.
For information on modes of operation, refer to page 26.
NOTE: For units purchased prior
to April 2014, contact BAC for the
previous generation manual.
NOTE: Refer to page 40 for more
information on EcoFlex™ Controls
Maintenance and refer to the
EcoFlex™ Controls Appendix
on page 46 for details on menu
navigation.
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