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Trane CGWF manual

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Table of contents for the manual

  • Page 1

    Scroll Liquid Chillers Model CGWF and CCAF 20 to 60 T ons (60 Hz) 17 to 50 T ons (50 Hz) W ater -Cooled and Condenserless CG-PRC012-EN January 2004 Built For the Industrial and Commercial Markets[...]

  • Page 2

    CG-PRC012-EN © 2004 American Standard Inc. All rights reserved. Introduction More Than Just Another “Improved” Chiller — Advanced Design — Better Reliability — Superior Efficiency — New CH530 Controls — Better A vailability — Easier T o Install and Operate The T rane 20-60 T on Scroll Liquid Chiller Design The T rane scroll compres[...]

  • Page 3

    3 CG-PRC012-EN Contents Introduction Features and Benefits W orld Class Efficiency and Reliability Options Controls Application Considerations Model Number General Data Selection Procedure Performance Data Full Load Performance Part Load Performance Adjustment Factors Pressure Drops Electrical Data and Connections T ypical Wiring Diagram Field Layo[...]

  • Page 4

    CG-PRC012-EN 4 The standard ARI rating condition (54/44°F and 85°F/3.0 gpm per ton) and IPL V are ARI certified. All other ratings, including the following, are outside the scope of the certification program and are excluded: • Glycol. • 50 Hz. • Condenserless models CCAF . W ater Chiller Systems Business Unit Features and Benefits Packed S[...]

  • Page 5

    5 CG-PRC012-EN Leading in Efficiency and Reliability with State-Of-The-Art Scroll Compressor T echnology Efficiency The energy efficiency of the scroll chiller results in energy costs lower than any other comparable chiller . Full load efficiencies are improved beyond reciprocating chillers, but part load efficiencies are simply unmatched by any ot[...]

  • Page 6

    CG-PRC012-EN 6 T rane 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. Comp[...]

  • Page 7

    7 CG-PRC012-EN Options Hot Gas Bypass: Hot gas bypass option allows unit operation below the minimum step of unit unloading. The regulator valve, along with all associated refrigerant piping and electrical wiring, are factory installed and tested on one refrigeration circuit. Unit does not start in hot gas bypass mode. If the unit operates in bypas[...]

  • Page 8

    CG-PRC012-EN 8 Controls Human Interfaces The T rane 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 tempe[...]

  • Page 9

    9 CG-PRC012-EN Controls Easy Interface to A Generic Building Management System Controlling the scroll CGWF chiller with building management systems is state- of-the-art, yet simple with either the LonT alk Communications Interface for Chillers (LCI-C) or Generic Building Management System Hardwire Points. Simple Interface with Other Control Systems[...]

  • Page 10

    CG-PRC012-EN 10 Controls T racer Summit controls — Interface With The T rane Integrated Comfor t System (ICS) T rane Chiller Plant Control The T racer Summit Chiller Plant Building Management System with Chiller Plant Control provides building automation and energy management functions through stand-alone control. The Chiller Plant Control is cap[...]

  • Page 11

    11 CG-PRC012-EN Controls Keeping Operators Informed A crucial part of efficiently running a chiller plant is assuring that the operations staff is instantly aware of what is happening in the plant. Graphics showing schematics of chillers, piping, pumps, and towers clearly depict the chiller plant system, enabling building operators to easily monito[...]

  • Page 12

    CG-PRC012-EN 12 Unit Location Units should be installed indoors where exposure to rain or water splash is minimal. A level foundation or flooring must be provided which will support at least 150 percent of the operating weight of the unit. The chiller foundation must be rigid to reduce vibration transmission to a minimum. Use of vibration isolators[...]

  • Page 13

    13 CG-PRC012-EN Model Number Description Digits 01, 02, 03, – Chiller series CGWF = W ater cooled scroll chiller CCAF = Scroll compressor chiller (condenserless) Digits 04, – Development sequence Digits 05, 06, 07 – Unit nominal tonnage 020 = 20 Nominal tons 025 = 25 Nominal tons 030 = 30 Nominal tons 040 = 40 Nominal tons 050 = 50 Nominal to[...]

  • Page 14

    CG-PRC012-EN 14 T able 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 10/1 5 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 W ater Storage (gall ons) 12 11 16 [...]

  • Page 15

    15 CG-PRC012-EN Selection Procedures The chiller capacity tables on the following pages cover the most frequently encountered leaving water temperatures. For temperature drops other than 10°F [5.6°C], refer to T able SP-1, Performance Adjustment Factors, shown below . Additional chiller selections and performance information can be obtained throu[...]

  • Page 16

    CG-PRC012-EN 16 T able PD-1. 60 Hz CGWF performance data in English units Evapo rator Enter ing Condenser Water T emperature (F) Leaving Water Unit 75 80 85 90 95 T emperature (F) Size T ons kW E ER T ons kW E ER T ons kW E ER T ons kW EE R T ons 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 [...]

  • Page 17

    17 CG-PRC012-EN T able PD-2. 60 Hz CGWF performance data in Metric units Evapo rator Entering Condenser Water T emperature (C) Leaving Water Unit 25 30 35 T emperature (C) Size kWo kWi COP kWo k Wi C OP kW o k Wi 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[...]

  • Page 18

    CG-PRC012-EN 18 T able PD-3. 50 Hz CGWF performance data in English units Evapo rator Enter ing Condenser Water T emperature (F) Leaving Wate Unit 75 80 85 90 95 T emperature (F) Size T ons kW E ER T ons kW E ER T ons kW E ER T ons kW EE R T ons 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 1[...]

  • Page 19

    19 CG-PRC012-EN T able PD-4. 50 Hz CGWF performance data in Metric units Evapo rator Entering Condenser Water T emperature (C) Leaving Water Unit 25 30 35 T emperature (C) Size kWo kWi COP kWo kWi COP kWo kWi CO P 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[...]

  • Page 20

    CG-PRC012-EN 20 T able PD-7. 60 Hz CCAF performance data in English units Evapo rator Entering Condenser Air T emperature (F) Leaving Water Unit Condenser 85 95 105 115 T emperature (F) Size Si ze T ons kW EER T ons kW EER T ons kW EER T ons 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[...]

  • Page 21

    21 CG-PRC012-EN T able PD-8. 60 Hz CCAF performance data in English units Evapo rator Entering Condenser Air T emperature (F) Leaving Water Unit Condenser 85 95 105 115 T emperature (F) Size Siz e T ons kW EER T o ns kW EER T ons kW EER T on s kW EER 20 CAUC-C20 21.3 20.1 12.6 20.2 22.2 10.8 19.0 24.6 9.2 17.7 27.3 7.7 20 CAUC-C25 21.7 19.1 13.5 20[...]

  • Page 22

    CG-PRC012-EN 22 T able PD-9. 60 Hz CCAF performance data in Metric units Evapo rator Entering Condenser Air T emperature (C) Leaving Water Unit Condenser 30 35 40 45 T emperature (C) Size Size k Wo k Wi COP kWo kWi COP kWo kW i CO P kWo kWi COP 20 CAUC-C20 69.4 19.8 3.5 66.2 21.7 3.0 62.5 23.8 2.6 58.7 26.2 2.2 20 CAUC-C25 70.7 18.9 3.7 67.3 20.7 3[...]

  • Page 23

    23 CG-PRC012-EN T able PD-5. Part-load per formance for CGWF 20-60 ton – 60 Hz in English units Unit Size 100% IPL V T ons 19.9 20 kW 15.2 20.3 EER 15.5 T ons 24.5 25 kW 19.0 20.5 EER 15.4 T ons 29.2 30 kW 22.8 20.3 EER 15.3 T ons 39.4 40 kW 30.1 20.7 EER 15.6 T ons 48.6 50 kW 37.6 19.6 EER 15.4 T ons 59.4 60 kW 46.5 19.8 EER 15.2 Notes: 1. IPL V[...]

  • Page 24

    CG-PRC012-EN 24 Figure P AF-1. Ethylene glycol performance adjustment factors Figure P AF-2. Propylene glycol performance adjustment factors Adjustment Factors Performance Data[...]

  • Page 25

    25 CG-PRC012-EN T able P AF-1. Pressure drop correction factor Leaving W at er Percent of Ethylene Glycol T emperature 0 10 20 30 40 50 0 NA NA NA NA 1.50 1.60 10 NA NA NA 1.38 1.46 1.55 20 NA NA 1.26 1.34 1.42 1.51 30 NA 1.15 1.22 1.30 1.38 1.47 40 1.00 1.12 1.19 1.26 1.34 1.42 50 1.00 1.09 1.16 1.23 1.31 1.39 60 1.00 1.05 1.09 1.12 1.16 1.21 T ab[...]

  • Page 26

    CG-PRC012-EN 26 Performance Data Chart PD-1. CGWF evaporator Chart PD-2. CGWF condenser Pressure Drops[...]

  • Page 27

    27 CG-PRC012-EN Electrical Data and Connections T able E-1. Electrical data for CGWF water-cooled chillers Unit W iring D ata Compressor Controls Unit Rated Minimum Maximum Recommended RLA LRA Size V oltage Circuit Ampaci ty Fuse Size Dual Element Fuse Size Quantity Each Each kW 208-230/60 77 110 100 34 251 0.16 380/60 38 50 50 2-10 17 142 0.16 20 [...]

  • Page 28

    CG-PRC012-EN 28 Electrical Data and Connections T ypical Wiring Diagram[...]

  • Page 29

    29 CG-PRC012-EN Electrical Data and Connections T ypical Wiring Diagram[...]

  • Page 30

    CG-PRC012-EN 30 Electrical Data and Connections Field Layout[...]

  • Page 31

    31 CG-PRC012-EN Electrical Data and Connections Field Layout[...]

  • Page 32

    CG-PRC012-EN 32 Dimensional Data Size A B C D E F G H 20 T on 2 " 8 1/2" 4 '-8" 1'-3 3/8" 4 1/8" 8 5/8" 5 5/8" 2' 7 3/8" (51) (216) (1423) (391) (105) (218) (143) (797) 25 T on 2 " 8 1/2" 4 '-8" 1'-3 3/8" 4 1/8" 8 5/8" 5 5/8" 2' 7 3/8" (51)[...]

  • Page 33

    33 CG-PRC012-EN CGWF 40-50 T o n Size A B C D E 40 T o n 2 1/2" 1'-3 3/4" 6'-5 1/2" 1'-4 1/4" 4 3/8" (64) (400) (1968) (413) (111) 50 T o n 3" 1'-3 1/2" 6'-5" 1'-6 1/8" 2 1/2" (76) (394) (1956) (480) (64) Notes: 1. Dimensions in ( ) are in millimeters. 2. Dimensional to[...]

  • Page 34

    CG-PRC012-EN 34 CGWF 60 T o n Dimensional Data[...]

  • Page 35

    35 CG-PRC012-EN English Dimensions Unit Size A B C D E F 20 T o n 8 1/2” 3’-11 1/2” 2” 2’-0” 1’-3 1/2” 3’-3 ” 25 T o n 8 1/2” 3’-11 1/2” 2” 1’-11 3/4” 1’-3 1/2” 3’ -10” 30 T on 7 3/4” 3’-10 3/4” 2 1/2” 2’-1 7/8” 1’-5 3/8” 3’-10 ” Metric Dimensions (mm) Unit Size A B C D E F 20 T on 216 120[...]

  • Page 36

    CG-PRC012-EN 36 English Dimensions Unit Size A B C D E F 40 T o n 5’-1 3/4” 1’-3 3/4” 1’-11 1/4” 2 1/2” 3’- 5” 1’-4 1/4” 50 T o n 5’-1 1/2” 1’-3 1/2” 2’-1 1/8” 3” 3 ’-10” 1’-6 1/8” 60 T o n 5’-1 1/2” 1’-3 1/2” 2’-0 7/8” 3” 3 ’-10” 1’-6 1/8” Metric Dimensions (mm) Unit Size A B C D E [...]

  • Page 37

    37 CG-PRC012-EN T able W-1. Weights, CGWF chillers Unit 20 25 30 40 50 60 Oper ating W t. (pounds) 1694 1757 2249 2746 2977 3905 (kilogram) 768 797 1020 1246 1350 1771 Ship ping W t. (pounds) 1522 1600 2014 2366 2626 3376 (kilogram) 690 726 914 1073 1191 1531 T able W-2. Weights, CCAF compressor chillers Unit 20 25 30 40 50 60 Oper ating W t. (poun[...]

  • Page 38

    CG-PRC012-EN 38 General All scroll chillers are factory tested and monitored for power and control operation (CGWF only). CGWF units ship with a full operating charge of refrigerant and oil. CCAF units ship with a full operating charge of oil. Exposed surfaces are painted with an air -dry beige primer -finisher prior to shipment. Compressor -Motor [...]

  • Page 39

    39 CG-PRC012-EN Mechanical Specifications DynaView Panel Factory-mounted to the control panel door , the operator interface has an LCD touch-screen display for operator input and information output. This interface provides access to the following information: evaporator report, condenser report, compressor report, ASHRAE Guideline 3 report, main, c[...]

  • Page 40

    T rane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. Literature Order Number File Number Supersedes Stocking Location T rane A business of American Standard Companies www .trane.com For more information contact your local sales office or e-mail us at comfor[...]