Trane CVGF Instruction Manual
Centrifugal water chillers
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Summary of Contents for Trane CVGF
- Page 1 Centrifugal Water Chillers Model CVGF Water-Cooled Hermetic Centrifugal Refrigeration Capacities from 400 to 1000 Tons (1400 3510 kW) 50 and 60 Hz CTV-PRC001-E4 October 2008...
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Page 2: Introduction
Turn to the Model CVGF for energy effi ciency provided by the two stage, gear drive centrifugal water chillers with economizers. The Trane Model CVGF is your choice for energy fi t operation year after year. © 2008 Trane, All rights reserved... -
Page 3: Table Of Contents
Contents Introduction …………………………………………………………………………2 Features and Benefi ts ……………………………………………………………9 ……………………………………………………10 Application Considerations General Data ………………………………………………………………………12 ……………………………………………………………13 Jobsite Connections Controls ……………………………………………………………………………17 Physical Dimensions ……………………………………………………………19 Mechanical Specifi cations ………………………………………………………23 Conversion Table …………………………………………………………………27 CTV-PRC001-E4... -
Page 4: Features And Benefi Ts
Features and Benefi ts Standard CVGF Features The following features are provided as standard with all Trane Model CVGFchillers: • Hermetic two-stage centrifugal compressor-motor assembly with integral lubrication system and economizer cycle • Evaporator and condenser assembly • Prewired instrument and control panel •... - Page 5 Features and Benefi ts Advanced Heat Transfer Surfaces • Evaporator and condenser tubes use the latest heat transfer surfaces • Less refrigerant needed due to advanced patented evaporator design Compact Size • Designed with the retrofi t and replacement market in mind •...
- Page 6 Features and Benefi ts Tracer AdaptiView Control Operator Interface Tracer AdaptiView control is the unit-mounted operator interface with a touch sensitive 12/1" display. The display presents information through an intuitive navigation system. Alternate languages are also available for the control panel display. Tracer AdaptiView control receives information from and communicates information to the other devices on the chiller’s communications link.
- Page 7 The portable PC-based service-tool software, Tracer TU™, supports service and maintenance tasks. Tracer TU serves as a common interface to all Trane chillers, and will customize itself based on the properties of the chiller with which it is communicating. Thus, the service technician learns only one service interface.
- Page 8 It can control the operation of the complete installation: chillers, pumps, cooling towers, isolating valves, air handlers and terminal units.Trane can undertake full responsibility for an optimized automation and energy management for the entire chiller plant. The main functions are: •...
- Page 9 Tracer Summit building automation system. But the benefi ts do not stop at the chiller plant. At Trane, we realize that all energy used in your cooling system is important. That is why we worked closely with other equipment manufacturers to predict the energy required by the entire system.
- Page 10 This results in a better balance of forces at low loads and produces a machine with a wider unloading capability. In Trane centrifugal chillers, gas prerotation vanes ahead of the compression stage improve impeller aerodynamic effi ciency, resulting in smoother unloading and reducing power consumption.
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Page 11: Application Considerations
Condenser Water Limitations Temperature Trane centrifugal chillers start and operate over a range of load conditions with controlled water temperatures. Reducing the condenser water temperature is an effective method of lowering the chiller power input. However, the effect of lowering the condenser water temperature may cause an increase in system power consumption. - Page 12 The use of untreated or improperly treated water in a chiller may result in scaling, erosion, corrosion, algae, or slime. It is recommended that the services of a qualifi ed water treatment specialist are used to determine what treatment, if any, is advisable. Trane assumes no responsibility for the results of untreated or improperly treated water.
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Page 13: General Data
General Data Table GD-1 – Model CVGF Description Model CVGF Nominal Cooling Capacity NTON 1000 Heat Exchanger Size Evaporator EVSZ 1000 1000 Condenser CDSZ 1000 1000 Heat Exchanger Bundles Evaporator EVBS A = Small A = Small A = Small A = Small A = Small A = Small... - Page 14 General Data 50 and 60 Hz SI Units and (English Units) Table GD-3 –Evaporator and Condenser Flow Rates (Minimum and Maximum, liters per second, gallons per minute) High Effi ciency Shells - 0.75 inch (19 mm) Internally Enhanced Cu Tube: Condenser: Nominal Shell 1000...
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Page 15: Jobsite Connections
Jobsite Connections Supply and Motor Lead Wiring and Connections Only copper conductors should be connected to the compressor motor due to the possibility of galvanic corrosion as a result of moisture if aluminum conductors are used. Copper conductors are recommended for supply leads in the starter panel. Suggested starter panel line- and load-side lug sizes (when lugs are provided) are noted in the starter submittals. -
Page 16: Controls
Controls Standard Features Standard Features Field Connection The fi eld-connected elements are involved in physically turning the chiller on or off. This involves ensuring that the chiller is not in an emergency or external stop condition, starting the pumps, and verifying that fl... - Page 17 Controls Optional Features Extended Operation Package Select the extended-operation package for chillers that require external, hot water control, and/or base-loading capabilities. This package also includes a 4-20 mA or 0-10 Vdc analog input for a refrigerant monitor. • External base-loading control •...
- Page 18 This removes oscillation above and below setpoints and extends the capabilities of the chiller. Some of the standard protection features of the chiller controller are described in this section. There are additional protection features not listed here. Contact your local Trane offi ce for additional protection information. High Condenser-Pressure Protection The chiller controller’s condenser limit keeps the condenser pressure under a specifi...
- Page 19 Controls Standard Protections Oil-Temperature Protection Low oil temperature when the oil pump and/or compressor are running may be an indication of refrigerant diluting the oil. If the oil temperature is at or below the low oil-temperature setpoint, the compressor is shut down on a latching diagnostic and cannot be started. The diagnostic is reported at the user interface.
- Page 20 Controls Standard Protections levels 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 consume power, but we are able to make some general statements concerning MPL protection: The chiller will remain running under the following conditions: •...
- Page 21 Controls Standard Protections Short-Cycling Protection This function mimics heat dissipation from a motor start using two setpoints: Restart Inhibit Free Starts and Restart Inhibit Start-to-Start Timer. This allows the CVGF to inhibit too many starts in a defi ned amount of time while still allowing for fast restarts. The default for CVGF is 3 Free Starts and a 20 minute Start-to-Start Timer.
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Page 22: Physical Dimensions
Physical Dimensions 50 and 60 Hz SI (English Units) Figure PD-1 –Model CVGF Cooling Only Figure PD-2 –Model CVGF Cooling Only Without Unit-Mounted With Unit-Mounted Starter Starter (for Remote-Mounted Starter) Dimensions – SI Units (English Units) Clearance Unit Dimensions Unit Dimensions Tube Pull With Unit Mounted Starters Without Unit Mounted Starters... - Page 23 Physical Dimensions Model CVGF Water Connection Pipe Size Shell Size 1000 Water Passes Metric Pipe Size (mm) DN Evaporator 2 Pass DN 200 (8”) DN 250 (10”) DN 300 (12”) 3 Pass DN 200 (8”) DN 200 (8”) DN 250 (10”) Condenser Condenser DN 250 (10”)
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Page 24: Mechanical Specifi Cations
Mechanical Specifi cations Trane CVGF packaged centrifugal water chillers using HFC-134a refrigerant consist of a hermetic two-stage, gear-drive centrifugal compressor, evaporator, condenser, interstage economizer, unit- mounted microprocessor based control panel and compressor motor starter. The chiller is entire factory assembled. - Page 25 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.
- Page 26 Mechanical Specifi cations Compressor-Motor Starter Unit-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 (star-delta), 900 RLA at 481-600 Volts (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.
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Page 27: Conversion Table
Conversion Table To Convert From: To : Multiply By: To Convert From: To : Multiply By: Length Energy and Power and Capacity Feet (ft) meters(mm) 0.30481 British Thermal Units (Btu/h) Kilowatt (kW) 0.000293 Inches (In) millimeters (mm) 25.4 British Thermal Units (Btu) KCalorie (Kcal) 0.252 Area... - Page 28 October 2008 Supersedes September 2004 www.trane.com For more information, contact your local Trane Trane has a policy of continuous product and data improvement and reserves the right to change design offi ce or e-mail us at comfort@trane.com specifi cations without notice.