Trane Centrifugal Water Chillers CVGF - Manual (Page 25)

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Condenser
The condenser is designed, tested and stamped in accordance with the ASME Boiler and Pressure
Vessel Code or PED (European Code) for a refrigerant side working pressure of 15.2 bars (220
psig). It consists of a carbon steel shell with steel tube sheets welded to each end. Individually-
replaceable, externally-fi nned and internally-grooved 19 mm(¾ in.) and 25.4 mm (1.0 in.) nominal
diameter seamless copper tubes are mechanically expanded into the tubesheets.
Two-pass water boxes are bolted to the tube sheets. Grooved pipe connections are standard.
fl anged connections are optionally available. Maximum waterside working pressureof 10.5 bars (150
psi) is standard. The waterside is hydrostatically tested at ASME 1.5 times, PED 1.43 times, GB 1.25
times maximum working pressure.
Unit Control Panel
The microcomputer control panel is factory installed 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 limitor or
by an inlet guide vane limit (whichever controls the lower limit). 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. Non-volatile 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.
Mechanical Specifi cations
CTV-PRC001-E4