Trane CVGF manual Unit Control Panel, Mechanical Specifications

Mechanical Specifications

Welded steel two pass water boxes are bolted to the tube sheets. Water connections are steel pipe stubs grooved for Victaulic couplings; flanged connections are optionally available. Maximum waterside working pressure of 10.5 bars (150 psi) is standard. The waterside is hydrostatically tested at 1.5 times maximum working pressure.

Unit Control Panel

TheTracer™ CH.530 is a microprocessor-based chiller controller that provides complete stand alone system control for water-cooled centrifugals. It is a factory-mounted packaged and tested on the CVGF unit. All controls necessary for the safe and reliable operation of the chiller are provided including oil management, interface to the starter, and three phase motor overload protection. It also includes comprehensive status and diagnostic monitoring controls. A control power transformer included in the starter panel powers the control system.

The microprocessor controller is compatible with reduced voltage or full voltage electro-mechanical starters, and solid state starter. Starter for Europe with the CE mark is available.

The microcomputer control system processes the leaving evaporator fluid temperature sensor signal to satisfy the system requirements across the entire load range.

The controller will load and unload the chiller via control of the stepper- motor/ actuator which drives the inlet guide vanes open and closed. The load range can be limited either by a control limit function such as motor current, low evaporator temperature or high condenser pressure limit or by an inlet guide vane limit (whichever comes first). It will also control the evaporator and condenser pumps to insure proper chiller operation.

Status and 10 active diagnostics are communicated to the operator via display with a tabbed navigation system. Setpoints are entered through the touch-sensitive screen. Countdown timer displays remaining time(s) during wait states and time out periods. Nonvolatile memory saves unit set-up information during power loss without the need for batteries. Password protection is provided to secure the operator interface. PC-based service tool software displays the last 60 active or 60 historic diagnostics, indicating the time, date of occurrence, and system parameters at the time of the diagnostic.

The service tool provides advanced troubleshooting and access to sophisticated configuration settings not needed during operation of the chiller. Any PC that meets the installation requirements may be loaded with the service tool software via download from www.trane.com.

Unit mounted display is capable of displaying chiller parameters in IP or SI units, and language in English and any 2 downloadable and/or locally translated languages.

Compressor Motor Starter Unit-mounted starters can either be a star-delta or solid state in NEMA1 type enclosure wired to compressor motor up to 952 RLA at 380~480 volts (star- delta), 900 RLA at 481~600Volts (star-delta), and 1472 RLA at 380~600 volts (solid-state).

Remote-mounted starters can either be star-delta or solid state for low voltage. Across-the-line, primary reactor, or auto transformer for medium and high voltage. All in a NEMA 1 type enclosure up to 1402 RLA at 380~600 volts (star- delta), 1472 RLA at 380~600 volts (solid-state), and 360 RLA at 3300~6600 volts (x-line, primary reactor, and auto- transformer).

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