Trane CVGF Manual do Utilizador Página 1

CentrifugalWater ChillersModel CVGFWater-Cooled Hermetic CentrifugalRefrigeration Capacities from400 to 1000 Tons (1400∼3510 kW)50 and 60 HzOctober 20

Two-Stage Compressor Widens the Application RangeWhy Centrifugal Compressors SurgeCentrifugal compressors produce their pressure differential (head) b

Condenser Water LimitationsTemperatureTrane centrifugal chillers start and operate over a range of load conditions with controlled water temperatures.

Application ConsiderationsContact your local Trane Sales Offi ce for information regarding optimum condenser water temperatures and fl ow rates for a sp

General Data13Table GD-1 – Model CVGF DescriptionModel CVGFNominal Cooling CapacityNTON 400 500 500 650 800 1000Heat Exchanger SizeEvaporator EVSZ 500

14General Data50 and 60 Hz SI Units and (English Units)High Effi ciency Shells - 0.75 inch (19 mm) Internally Enhanced Cu Tube:Condenser:Nominal Shell

Supply and Motor Lead Wiring and ConnectionsOnly copper conductors should be connected to the compressor motor due to the possibility of galvanic corr

16Standard FeaturesField ConnectionThe fi eld-connected elements are involved in physically turning the chiller on or off. This involves ensuring that

Extended Operation PackageSelect the extended-operation package for chillers that require external, hot water control, and/or base-loading capabilitie

18ControlsStandard ProtectionsStandard ProtectionsThe chiller controller uses proportional-integral-derivative (PID) control for all limits—there is n

Standard Protections19Oil-Temperature ProtectionLow oil temperature when the oil pump and/or compressor are running may be an indication of refrigeran

Introducing Trane’s Model CVGF Centrifugal Water ChillerIntroductionThe basic gear driven centrifugal water chiller design was introduced in 1976 and

20Controlslevels at which this may occur. It is diffi cult to defi ne an exact voltage sag or voltage level at which a particular motor will no longer c

Standard ProtectionsShort-Cycling ProtectionThis function mimics heat dissipation from a motor start using two setpoints:Restart Inhibit Free Starts a

22Figure PD-1 –Model CVGF Cooling OnlyWith Unit-Mounted StarterFigure PD-2 –Model CVGF Cooling Only Without Unit-Mounted Starter (for Remote-Mounted S

Model CVGF Water Connection Pipe SizeShell Size500 700 1000Water Passes Metric Pipe Size (mm) DNEvaporator2 Pass DN 200 (8”) DN 250 (10”) DN 300 (12”)

Trane CVGF packaged centrifugal water chillers using HFC-134a refrigerant consist of a hermetic two-stage, gear-drive centrifugal compressor, evaporat

25CondenserThe condenser is designed, tested and stamped in accordance with the ASME Boiler and Pressure Vessel Code or PED (European Code) for a refr

Compressor-Motor StarterUnit-mounted starters can either be a star-delta or solid-state in NEMA 1 type enclosure rated up to 952 RLA at 380-480 Volts

27To Convert From: To : Multiply By:Length Feet (ft) meters(mm) 0.30481Inches (In) millimeters (mm) 25.4AreaSquare Feet (ft2) square meters (m2

www.trane.comFor more information, contact your local Trane offi ce or e-mail us at [email protected] has a policy of continuous product and data

Introduction …………………………………………………………………………2Features and Benefi ts ……………………………………………………………9Application Considerations ……………………………………………………10General Data

Standard CVGF FeaturesThe following features are provided as standard with all Trane Model CVGFchillers:• Hermetic two-stage centrifugal compressor-mo

Advanced Heat Transfer Surfaces• Evaporator and condenser tubes use the latest heat transfer surfaces• Less refrigerant needed due to advanced patente

Tracer AdaptiViewTM Control Operator InterfaceTracer AdaptiViewTM control is the unit-mounted operator interface with a touch sensitive 12/1" dis

7Features and Benefi tsTracer TU InterfaceThe Tracer chiller controller adds a level of sophistication better served by a PC application to improve ser

Tracer AdaptiViewTM ControllerToday's centrifugal chillers offer predictive controls that anticipate and compensate for load changes. Other contr

• Time of day scheduling: allows the end user to defi ne the occupancy period, i.e. time of the day, holiday periods and exception schedules.• Optimiza