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Scroll Liquid Chillers
Model CGWF and CCAF
20 to 60 Tons (60 Hz)
17 to 50 Tons (50 Hz)
Water-Cooled and Condenserless
Built For the Industrial and Commercial Markets
January 2004 CG-PRC012-EN
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Introduction The Trane 20-60 Ton Scroll Liquid Chiller More Than Just Another “Improved” Design Control Chiller The Trane scroll compressor is the most CH530 controls enable scrolling access — Advanced Design advanced scroll compressor in the to inputs and operating information via — Better Reliability industry. the LCD touch-screen display. Job- — Superior Efficiency specific communication options allow Reliability — New CH530 Controls greater reporting flexibility. The CH530 is 64 percent fewe
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Contents Introduction 2 Features and Benefits 4 World Class Efficiency and Reliability Options Controls 8 Application Considerations 12 Model Number 13 General Data 14 Selection Procedure 15 Performance Data 16 Full Load Performance Part Load Performance Adjustment Factors Pressure Drops Electrical Data and Connections 27 Typical Wiring Diagram Field Layout Dimensional Data 32 Weights 37 Mechanical Specifications 38 CG-PRC012-EN 3
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Features and Benefits Trane Value Means Fast Availability, Easy Installation and Quality Service Packed Stock For Fast Delivery Easy Serviceability When your project is a fast-track job, Trane 20 through 60 ton scroll chillers Trane can help. A wide range of chillers are designed with service personnel in are stocked and can be shipped soon mind. All major components are after receipt of your order. replaceable without complete unit disassembly. Plus, CH530 provides Build To Order diagnostic cap
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Features and World Class Efficiency Benefits & Reliability ASHRAE Standard 90.1 All Trane chillers Leading in Efficiency and Reliability with State-Of-The-Art meet and exceed the new efficiency Scroll Compressor Technology levels mandated by ASHRAE Standard 90.1. This new standard requires higher efficiencies than past technologies can Efficiency Reliability deliver. It mandates higher efficiency The energy efficiency of the scroll chiller The Trane scroll chiller with many new levels for scroll
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Features and World Class Efficiency Benefits & Reliability Trane Scroll Compressor — Maximum Efficiency with Enhanced Reliability General The scroll compressor has two scrolls. The top scroll is fixed and the bottom scroll orbits. Each scroll has walls in a spiral shape that intermesh. Inlet-First Orbit As the bottom scroll orbits, two refrigerant gas pockets are formed and enclosed. Compression-Second Orbit The refrigerant gas is compressed as the volume is reduced closer to the center of the s
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Features and Benefits Options Options Ice Making Controls: In ice-making mode, the unit will operate fully loaded Hot Gas Bypass: Hot gas bypass option in response to jobsite supplied contact allows unit operation below the closure. Ice making will terminate when minimum step of unit unloading. The the return fluid temperature falls below regulator valve, along with all associated an adjustable setpoint (minimum 20°F refrigerant piping and electrical wiring, [-6.7°C]). When not in ice making mod
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Controls Human Interfaces Figure C1. DynaView operator interface The Trane water-cooled 20-60 ton scroll CGWF chiller offers an easy-to-use operator interface panel, the DynaView. DynaView is an LCD touchscreen display that is navigated by file tabs. This is an advanced interface that allows the user to access any important information concerning setpoints, active temperatures, modes, electrical data, pressures, and diagnostics. Safety Controls A centralized main processor offers a higher level
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Controls Compressor Inhibit Easy Interface to A Generic Building Chiller Status Management System Locks out the second compressor on Indicates the running modes and states Controlling the scroll CGWF chiller with each circuit, reducing the kW draw. of the chiller, i.e. Running in alarm mode, building management systems is state- chiller enabled, chiller being locally Ice Making of-the-art, yet simple with either the controlled, etc… Provides interface with ice making LonTalk Communications Inter
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Controls Tracer Summit controls — Interface When the scroll CGWF chiller is used in A single twisted pair of wires tied directly ™ ™ With The Trane Integrated Comfort conjunction with a Trane Tracer between the CGWF chiller and a Tracer System (ICS) Summit system, the unit can be Summit system provides control, monitored and controlled from a remote monitoring and diagnostic capabilities. Trane Chiller Plant Control location. The chiller can be controlled to Control functions include auto/stop,
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Controls Trane Chiller Plant Automation Keeping Operators Informed Easy Documentation for Regulatory Trane’s depth of experience in chillers A crucial part of efficiently running a Compliance and controls makes us a well-qualified chiller plant is assuring that the Comprehensive documentation of operations staff is instantly aware of choice for automation of chiller plants refrigerant management practices is what is happening in the plant. Graphics using scroll liquid chillers. The chiller now a
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Application Considerations Unit Location Water Treatment Units should be installed indoors where Use of untreated or improperly treated exposure to rain or water splash is water in chillers may result in scaling, minimal. A level foundation or flooring erosion, corrosion, algae or slime. It is must be provided which will support at recommended that the services of a least 150 percent of the operating weight qualified water treatment specialist be of the unit. The chiller foundation must be engag
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Model Number Description Model Number Description CGW F 020 4 C A0 U A A 1 C L 1 D 0 N N 0 0 N 0 X 0 X 1,2,3 4 5,6,7 8 9 10,11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Digits 01, 02, 03, – Chiller series Digit 16 – Condenser tube material Digit 24 – Communication options CGWF = Water cooled scroll N = None - CCAF units 0 = None chiller C = Std copper finned tubes 3 = Tracer Summit interface CCAF = Scroll compressor chiller 5 = LonTalk LCI-C interface Digit 17 – Condenser water conne
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General Data Table GD-1. General data — CGWF water-cooled chiller Size 20 25 30 40 50 60 Compressor Quantity (1) 2 2 2 2/2 2/2 2/2 Nominal Size (tons) (2) 10/10 10/15 15/15 10-10/10-10 10-15/10-15 15-15/15-15 Steps of Unloading (%) 100,50 100,60 100,50 100,75,50,25 100,80,60,30 100,75,50,25 Evaporator Water Storage (gallons) 12 11 16 13 21 40 (liters) 45 42 61 49 80 151 Min. Flow (gpm) 24 30 36 48 60 84 (L/s) 1.5 1.9 2.3 3.0 3.8 4.7 Max. Flow (gpm) 72 90 108 144 180 252 (L/s) 4.5 5.7 6.8 9.1 11.
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Selection Procedures Scroll Liquid Chiller — (CGWF) — Compressor Chiller – (CCAF) – Selection The chiller capacity tables on the following pages cover the most Selection Example: Example: frequently encountered leaving water Given: Select the unit for the following temperatures. For temperature drops System Load = 40 tons conditions: other than 10°F [5.6°C], refer to Table Leaving Chilled Water Temperature A compressor chiller is required to SP-1, Performance Adjustment Factors, (LCWT) = 44°F [6
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Performance Full Load Data Performance Table PD-1. 60 Hz CGWF performance data in English units Evaporator Entering Condenser Water Temperature (F) Leaving Water Unit 75 80 85 90 95 Temperature (F) Size Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER 20 19.2 13.8 16.7 19.0 14.5 15.7 18.6 15.4 14.6 18.1 16.1 13.5 17.7 17.1 12.4 25 23.8 17.2 16.5 23.2 18.1 15.4 22.7 19.1 14.3 22.1 20.1 13.2 21.6 21.2 12.2 40 30 28.3 20.7 16.4 27.6 21.7 15.3 27.0 22.9 14.1 26.3 24.1 13.1 25.6 25.4 12.1
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Performance Full Load Data Performance Table PD-2. 60 Hz CGWF performance data in Metric units Evaporator Entering Condenser Water Temperature (C) Leaving Water Unit 25 30 35 Temperature (C) Size kWo kWi COP kWo kWi COP kWo kWi COP 20 70.4 14.2 5.0 67.7 15.5 4.4 64.7 17.1 3.8 25 87.1 17.7 4.9 83.5 19.4 4.3 79.8 21.8 3.7 6 30 104.0 21.2 4.9 99.6 23.2 4.3 95.1 25.6 3.7 40 139.5 28.0 5.0 133.9 30.7 4.4 128.1 33.8 3.8 50 172.4 35.0 4.9 165.3 38.3 4.3 157.9 42.2 3.7 60 211.0 43.2 4.9 202.2 47.3 4.3 1
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Performance Full Load Data Performance Table PD-3. 50 Hz CGWF performance data in English units Evaporator Entering Condenser Water Temperature (F) Leaving Wate Unit 75 80 85 90 95 Temperature (F) Size Tons kW EER Tons kW EER Tons kW EER Tons kW EER Tons kW EER 20 19.2 13.8 16.7 19.0 14.5 15.7 18.6 15.4 14.6 18.1 16.1 13.5 17.7 17.1 12.4 20 16.8 11.1 18.1 16.4 11.7 16.8 16.0 12.4 15.5 15.6 13.1 14.3 15.3 13.9 13.1 25 20.7 13.9 17.9 20.3 14.6 16.6 19.8 15.5 15.4 19.4 16.3 14.2 18.9 17.3 13.1 42 3
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Performance Full Load Data Performance Table PD-4. 50 Hz CGWF performance data in Metric units Evaporator Entering Condenser Water Temperature (C) Leaving Water Unit 25 30 35 Temperature (C) Size kWo kWi COP kWo kWi COP kWo kWi COP 20 70.4 14.2 5.0 67.7 15.5 4.4 64.7 17.1 3.8 20 59.4 11.4 5.2 57.0 12.6 4.5 54.5 14.0 3.9 25 73.4 14.2 5.2 70.5 15.7 4.5 67.5 17.3 3.9 6 30 87.3 17.0 5.1 83.9 18.7 4.5 80.3 20.7 3.9 40 117.6 22.4 5.2 112.9 24.8 4.6 108.0 27.5 3.9 50 145.3 28.0 5.2 139.7 30.9 4.5 133.7
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Performance Full Load Data Performance Table PD-7. 60 Hz CCAF performance data in English units Evaporator Entering Condenser Air Temperature (F) Leaving Water Unit Condenser 85 95 105 115 Temperature (F) Size Size Tons kW EER Tons kW EER Tons kW EER Tons kW EER 20 CAUC-C20 19.4 19.5 11.8 18.4 21.6 10.1 17.3 23.9 8.6 16.1 26.6 7.2 20 CAUC-C25 19.7 18.6 12.6 18.7 20.6 10.8 17.6 23.0 9.1 16.5 25.5 7.7 25 CAUC-C25 24.1 24.9 11.5 22.8 27.6 9.9 21.5 30.6 8.4 20.0 34.0 7.0 25 CAUC-C30 24.5 23.4 12.5 2
