Safeties

• Smart shutdown sequence condenser/absorber loss of flow

• Low condenser/absorber water temperature

• High interstage pressure limit

• High pressure cutout

• Evaporator leaving fluid temperature cutout

• Motor current overload

• High motor winding temperature

• Over/under voltage (optional)

• Purge limit

• Sensor failure detection

Monitored Points

Chiller information is available at the operator interface via a clear language display. Access to the information is through four dedicated report keys:

Customer, Chiller, Cycle and Pump/Purge.

Customer Report

User defined custom report (operator may choose up to 20 points — from a list of over 100 choices).

Chiller Report

Status, fluid temperatures, and setpoints:

• Operating mode (i.e. run status)

• Chilled water setpoint

• Evaporator entering/leaving water temperatures

• Absorber entering/leaving water temperatures

• Condenser leaving water temperature outdoor air temperature

• Evaporator leaving water temperature

• Chilled water reset

Cycle Report

Refrigerant temperatures and pressures:

• Solution temperature leaving high temperature generator

• Interstage vapor temperature

• Solution temperature entering level control

• Mixed solution temperature entering low temperature heat exchanger

• Solution temperature entering high temperature generator

• Interstage vapor pressure

• High temperature generator leaving concentration

• Low temperature generator leaving concentration

• High temperature generator cutout and monitor temperature

• Crystallization detection temperature

• Crystallization trip temperature

• Solution temperature leaving low temperature generator

• Saturated condenser refrigerant temperature

• Absorber entering concentration

• LiBr crystallization margin

• Solution temperature leaving absorber

• Absorber spray temperature

• Solution temperature leaving absorber

• Solution temperature entering low temperature generator

• Saturated evaporator refrigerant temperature

• Evaporator leaving water temperature

• Evaporator entering water temperature

• Absorber entering water temperature

• Absorber leaving water temperature

• Condenser leaving water temperature

• Solution pump auto/manual speed command

• Energy input auto/manual/slaved reported command

• Steam Supply Pressure

• Generator Steam Pressure

Pump/Purge Report

• Solution pump

— Starts and hours counters

— Motor phase currents

— Motor phase voltages (optional)

• Purge Pump

— Operating mode and status

— Refrigerant suction temperature

— Pumpout rate

— Total pumpout time

— Service log

Diagnostics

The absorption chiller Unit Control Panel (UCP2) provides over 70 active and historic diagnostics such as:

• Water and refrigerant/solution temperatures out of range

• Solution pressures out of range

• Loss of system water flows

• Sensor and switch faults

• Overload trips

• Over/under voltage (optional)

• Crystallization recovery

• High pressure cutout

• Emergency stop

• Loss of communication to other modules

• Motor abnormal

Operator Interface

The Trane Horizon ™ steam-fired absorption chiller control panel, UCP2, is easy to use, understand, access information, read, change setpoints, diagnose problems, maintain, and to reset after shutdown.

Convenience

Enunciation of all information is at the front panel display (including power, voltage, amps, purge pressures, and number of starts data). Messages displayed using clear language.

Readability

• Two line, 40 character display that is easy to read from within a 60 degree angle

• LCD backlight so that the display can be read in a variety of equipment room lighting

Remote Operator Interface

With the addition of an optional remote interface panel, up to four chillers with UCP2 can be monitored and controlled. All data available at each chiller’s local operator interface is available to the Remote Operator Interface via a single twisted pair.

Ease of Use

• Keypad programmability —no manual switches or setpoint potentiometers

• Logically arranged report groups with report header and setpoint groups

• Selectable security

• Variable points updated every two seconds

• Messages that direct user to problem source via a menu item

Application Flexibility

• Seven languages available

• Metric (SI) units available

• Complete character human interface available

Trane ICS Compatibility

The Trane Absorption chiller control panel, UCP2, is 100 percent compatible with the Trane Integrated Comfort™ systems, ICS, UCP2 easily integrates into the Tracer ^® family of flexible chiller plant system controllers with a single twisted-wire pair communications cable.

For more information on the Trane absorption chiller unit control panel, please contact your local Trane sales engineer.