Manual de instrucciones de Trane Centrifugal Water Chillers CVGF

Manual de instrucciones del aparato Trane Centrifugal Water Chillers CVGF

Aparato: Trane Centrifugal Water Chillers CVGF
Categoría: Nevera
Fabricante: Trane
Tamaño: 0.41 MB
Fecha de añadido: 9/17/2014
Número de páginas: 24
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Resúmenes de contenidos
Resumen del contenido incluido en la página 1

Centrifugal
Water Chillers
Model CVGF
Water-Cooled Hermetic Centrifugal
Refrigeration Capacities From
400 to 1000 Tons (1400 kW-3510 kW)
50 and 60 Hz
September 2004 CTV-PRC001-GB

Resumen del contenido incluido en la página 2

Introduction Introducing Trane’s Model CVGF Centrifugal Water Chiller Introduction The basic gear driven centrifugal water chiller design was introduced in 1976 and has been proven in thousands of installations. The Trane Company continues to deliver its reliability and energy fitness commitment on its newest line of gear drive centrifugal water chillers, the Model CVGF. The major advantages of the Model CVGF are: • High reliability  Low sound levels  Compact size  High efficiency at a compet

Resumen del contenido incluido en la página 3

Contents Introduction 2 Features and Benefits 4 Application Considerations 9 General Data 10 Jobsite Connections 12 Controls 13 Physical Dimensions 17 Mechanical Specifications 19 Conversion Table 23 CTV-PRC001-GB 3

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Features and Benefits Applications Standard CVGF Features Environmental Features and  Comfort cooling The following features are provided as Benefits  Industrial process cooling standard with all Trane Model CVGF Improved Efficiency: chillers: Patents  High Efficiency: 0.55 kW/Ton at ARI  Hermetic two-stage centrifugal  Polygon drive for refrigeration conditions compressor-motor assembly with compressor impellers  Motor cooling vented to economizer integral lubrication system and  Centrif

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Features and Benefits DynaView receives information from DynaView can be connected to the Microprocessor Controls with and communicates information to the service tool using a standard 9-pin CH530 other devices on the chiller’s male, 9-pin female RS-232 serial cable. communications link. DynaView DynaView Operator Interface The serial connection is located at the performs the Leaving Chilled Water bottom of the DynaView panel behind ™ DynaView is the unit-mounted control Temperature and Limit Co

Resumen del contenido incluido en la página 6

Features and Benefits ™ TechView is designed to run on a Serviceability TechView customer’s laptop, which connects to Previous Trane chiller controllers All chiller status, machine configuration DynaView with a serial cable. included a user interface that presented settings, customizable limits, and up to DynaView’s serial port is located all chiller data necessary for both daily 60 active or historic diagnostics are behind a sliding door on the bottom of tasks and service or maintenance tasks.

Resumen del contenido incluido en la página 7

Features and Benefits  Time of day scheduling: allows the Feedforward Adaptive Building Automation and end user to define the occupancy Control Chiller Plant Control period, i.e. time of the day, holiday The Tracer chiller controller allows the For a preprogrammable and flexible periods and exception schedules. system designer to explore energy building automation and chiller plant  Optimization of the start/stop time of saving strategies and allows the control, Trane has developed the Tracer

Resumen del contenido incluido en la página 8

Features and Benefits ™  Communication capabilities: several Integrated Comfort System (ICS) communication levels are provided: The onboard Tracer chiller controller is — local, through a PC workstation designed to be able to communicate keyboard. Summit can be with a wide range of building programmed to send messages to automation systems. To take full local or remote workstations and advantage of the capabilities of the or a pager in the following cases: chiller, incorporate your chiller int

Resumen del contenido incluido en la página 9

Features and Benefits The length of the resultant vector V is Two-Stage Compressor proportional to the kinetic energy Widens the Application available for conversion to static Range pressure in the volute. Consequently, Why Centrifugal Compressors Surge is fixed and for a given compressor, V t Centrifugal compressors produce their V varies with the cooling load. With the r pressure differential (head) by chiller unloading, the pressure converting the kinetic energy of the gas differential betwee

Resumen del contenido incluido en la página 10

Application Considerations Water Flow Condenser Water Limitations Today’s technology challenges ARI’s Temperature traditional design of three gpm per ton Trane centrifugal chillers start and through the condenser. Reduced operate over a range of load conditions condenser flows are a simple and with controlled water temperatures. effective way to reduce both first and Reducing the condenser water operating costs for the entire chiller temperature is an effective method of plant. This design strat

Resumen del contenido incluido en la página 11

General Data Table GD-1 – Model CVGF Description Model CVGF Nominal Cooling Capacity NTON 400 500 500 650 800 1000 Heat Exchanger Size Evaporator EVSZ 500 500 700 700 1000 1000 Condenser CDSZ 500 500 700 700 1000 1000 Heat Exchanger Bundles Evaporator EVBS A = Small A = Small A = Small A = Small A = Small A = Small B = Medium B = Medium B = Medium B = Medium B = Medium B = Medium C = Large C = Large C = Large C = Large C = Large C = Large D = Extra Large D = Extra Large Condenser CDBS A = Small

Resumen del contenido incluido en la página 12

General 50 and 60 Hz SI Units Data and (English Units) Table GD-3 – Evaporator and Condenser Flow rates (Minimum and Maximum, liters per second, gallons per minute) High Efficiency Shells - 0.75 inch (19 mm) Int. Enhanced Cu Tube: Condenser: Nominal Shell 500 500 500 700 700 700 1000 1000 1000 1000 Bundle Size Small Medium Large Small Medium Large Small Medium Large Extra Large Number of Passes 22222222 2 2 Min Flow lps (gpm) 31 (487) 34 (542) 37 (586) 42 (668) 47 (744) 52 (816) 59 (938) 67 (105

Resumen del contenido incluido en la página 13

Jobsite Connections Figure J-1 — Electric Connections Supply and Motor Lead Wiring and Connections Terminal Lugs (Field-Supplied) Copper conductors only should be Connection Pad 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

Resumen del contenido incluido en la página 14

Standard Features Controls Motor Control and Compressor Standard Features Chilled-Water Reset Protection Chilled-water reset reduces energy Field Connection This includes all functions that start, consumption during periods of the The field-connected elements are run, and stop the motor. The starter year when heating loads are high and involved in physically turning the chiller module provides the interface and cooling loads are reduced. It is based on or off. This involves ensuring that control

Resumen del contenido incluido en la página 15

Optional Controls Features condenser pressure rises too high, the maintain the setpoint. Heating is the Extended Operation Package controller’s Adaptive Control logic primary mission and cooling is a waste Select the extended-operation package limits the loading of the chiller to product or a secondary mission. for chillers that require external, hot prevent the chiller from shutting down This technique provides application water control, and/or base-loading on a safety limit. These limits may

Resumen del contenido incluido en la página 16

Standard Controls Protections ™ Evaporator Limit Protection Low Differential Oil-Pressure Tracer Chiller Controller Evaporator Limit is a control algorithm Protection The chiller controller uses proportional- that prevents the chiller tripping on its Oil pressure is indicative of oil flow and integral-derivative (PID) control for all low refrigerant-temperature cutout. The active oil-pump operation. A significant limits—there is no dead band. This machine may run up to the limit but drop in oil

Resumen del contenido incluido en la página 17

Standard Controls Protections Momentary Power Loss and The chiller may shut down under the Surge Detection Protection Distribution Fault Protection following conditions: Surge detection is based on current Three-phase momentary power loss fluctuations in one of three phases. The  Line-voltage sags of 1.5 or more line (MPL) detection gives the chiller default detection criterion is two cycles for voltage dips of 30 percent improved performance through many occurrences of RMS current change of or

Resumen del contenido incluido en la página 18

Physical 50 and 60 Hz SI Dimensions (English Units) Figure PD-1 – Model CVGF Cooling Only Figure PD-2 – Model CVGF Cooling Only Without Unit With Unit Mounted Starter Mounted Starter (for Remote Mounted Starter) ” ” 914 mm (36 ) 914 mm (36 ) RECOMMENDED RECOMMENDED CLEARANCE CLEARANCE HEIGHT HEIGHT WIDTH WIDTH 457 mm (18') RECOMMENDED CLEARANCE LENGTH Dimensions – SI Units (English Units) Clearance Unit Dimensions Unit Dimensions Tube Pull With Unit Mounted Starters Without Unit Mounted Starters

Resumen del contenido incluido en la página 19

Physical Dimensions Model CVGF Water Connection Pipe Size Shell Size 500 700 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 2 Pass DN 250 (10”) DN 300 (12”) DN 350 (14”) Evaporator Water Box Length — SI (English) Length No. mm (in) Shell Pressure Evap. Passes Supply Return 500 10 bar (150 psig) NMAR 2 371 (14.61) 156 (6.14) 10 bar (150 psig) NMAR 3 371 (14.61) 371 (14.61) 700 10 bar (150 psi

Resumen del contenido incluido en la página 20

Mechanical Specifications The Trane CVGF packaged centrifugal Motor with steel tube sheets welded to each water chillers using HFC-134a The motor is a hermetic, liquid end. Intermediate tube support sheets refrigerant consist of a hermetic two refrigerant cooled, two-pole, low-slip positioned along the shell axis prevent stage, gear-drive centrifugal squirrel cage induction motor. A radial relative tube motion. Individually compressor, evaporator, condenser, hydrodynamic bearing and duplex repla


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