CGWQ-PRC001B-EN (02/2016): Product Catalog, Cold · PDF fileCold Generator™ Scroll Liquid Chillers Model CGWQ and CCAQ 20 to 70Tons (60 Hz) Water-Cooled and Compressor Chillers February

Cold Generator™ Scroll Liquid Chillers

Model CGWQ and CCAQ

20 to 70Tons (60 Hz)Water-Cooled and Compressor Chillers

February 2016 CGWQ-PRC001B-EN

Product Catalog

Introduction

Trane R-410A Scroll Liquid Chiller

Reliability

Trane is a leader in chiller design and reliability.The Cold Generator™ line of scroll chillerscontinues that tradition.

Efficiency

CGWQ scroll chillers meet and exceed ASHRAE Standard 90.1-2010 full and part load efficiencies.

Control

Unit controller provides complete chiller control and standard interface to BACnet® IP andModbus™ BMS systems. LonTalk®, Johnson N2, or BACnet MS/TP interface optional. Doormounted display and local PC Ethernet connection provides easy access to set points anddiagnostic displays. Lead/Lag control of compressor sets is standard.

Availability

Fast ship cycles on select models and voltages.

Installation

Compact unit design, factory wiring, easy lifting provisions, and start-up control logic mean quickand easy setup. Chillers fit through standard single-width doorways.

Operation

Smart safety features and over 60 diagnostic displays mean easy and virtually trouble-freeoperation.

© 2016Trane All rights reserved CGWQ-PRC001B-EN

Introduction

Copyright

This document and the information in it are the property ofTrane, and may not be used orreproduced in whole or in part without written permission.Trane reserves the right to revise thispublication at any time, and to make changes to its content without obligation to notify any personof such revision or change.

Trademarks

All trademarks referenced in this document are the trademarks of their respective owners.

Revision History

CGWQ-PRC001B-EN (12 Feb 2016)

• Updated mechanical specifications.

• Added ambient and fan/damper control information for CCAQ/CAUJ combination.

CGWQ-PRC001B-EN 3

Table of Contents

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Application Consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Model Number Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

General Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Weight Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4 CGWQ-PRC001B-EN

Features and Benefits

Trane offers state-of-the-art water cooled and remote Condenser scroll liquid chillers for a widerange of comfort and process-cooling applications.These chillers are complete, factory-assembledchillers that offer ease of installation with microprocessor controllers providing maximumoperating efficiency.These compact chillers install easily and quickly into most building layouts,making them ideal choices for retrofit or new building designs.

Trane Liquid Chillers

Water-cooled chillers are complete, factory-assembled liquid chillers for comfort or process-cooling applications.They have multiple scroll compressors.

• Available in 7 sizes ranging from 20 to 70 nominal tons.

• Compressor chiller version (CCAQ 20 to 70 tons) available for use with remote condensers.

• Factory assembled and charged, complete with all refrigerant piping and electrical wiring.CGWQ models are charged with refrigerant, CCAQ models with dry nitrogen.

• Units ship ready to install, need only electrical and water connections.

• All components mounted in a rugged, open frame for easy access.

• Dual refrigerant circuits with dual shell-and-tube condensers on CGWQ 40 to 70 ton models.CGWQ 20 to 30 models are single circuit.

• Robust cleanable shell-and-tube condensers uniquely suited for open loop cooling towerapplications.

• The powerful unit controller offers complete chiller control and provides a wealth ofinformation and diagnostics.

• All units meet ASHRAE 90.1-2010 efficiency guidelines.

Fast Deliveries

When your project has a critical deadline,Trane can help. A wide range of major components arereadily available so that your model can be shipped fast.

Installation

• Single point power connection for simplified, fast field-wiring.

• The powerful unit controller provides complete chiller controls and interface to a variety ofplatforms, includingBACnet® IPandModbus™as standard.LonTalk®,Johnson N2andBACnet MS/TP require an optional interface.

• Units are pre-charged with oil and refrigerant (CGWQ) from the factory which speedsinstallation. CCAQ units have the proper standard oil charge and a charge of dry nitrogen.

• Units are designed to fit thru standard doorways.

• Factory testing ensures first-time smooth operation on start-up, and reduces follow upcosts.

Service

Trane 20 thru 70 ton scroll chillers are designed with service personnel in mind. Unit design allowsreplacement of all major components without complete unit teardown. All CGWQ units havemechanically cleanable shell-and-tube condensers.The unit controller provides diagnosticcapability and remote factory diagnostics to aid local and factory service personnel in analyzingproblems. Unanticipated down time is minimized.

CGWQ-PRC001B-EN 5

Features and Benefits

Single Source Responsibility

Trane is a single source provider, allowing the customer to obtain all building comfort systemsthrough one source.

Added Value Expertise

Trane has more than 100 years of experience engineered into their products.That means a qualityproduct that works right the first time!

Leading in Efficiency and Reliability

with State-Of-The-Art Scroll CompressorTechnology

ASHRAE Standard 90.1 - 2010

AllTrane chillers meet and exceed the efficiency levels mandated by ASHRAE Standard 90.1.Thisstandard requires higher efficiencies than past technologies can deliver. In fact, energy efficiencyis so paramount; the US Federal Government has adopted Standard 90.1. Federal Executive Ordermandates energy consuming devices procured must be in the top 25% of their class. In the caseof chillers, ASHRAE 90.1 is the product standard for measurement.

Potential Risk

Not only has ASHRAE 90.1 been adopted by the US Federal Government, it’s expected to beadopted domestically, if not globally, in the future. Make sure that your chillers, as well as yourentire HVAC system, comply or you may be caught retrofitting your project with new equipmentand paying extra design dollars if the code changes during construction.

Efficiency

The energy efficiency ofTrane scroll chillers results in energy costs lower than most othercomparable chillers. Superior engineered efficiencies are obtained by combining advanced scrollcompressor energy efficient features with up to date heat exchanger technology and state-of-the-art controls. Here’s How:

• Scroll compressor’s positive displacement design

• Dual refrigerant circuits

• Multiple compressors 40 through 70 ton models

• Optimum system design

• Reduced friction

• No valves

• Advanced heat transfer surfaces

Reliability

Trane Scroll Chillers with many new improvements feature highly efficient and reliable scrollcompressors. Here’s How:

• Scroll compliance allows liquid and dirt to pass through without damaging compressor (liquidslugging resistant).

• Advanced microelectronics protect

• compressor and motor from typical electrical fault conditions.

• Years of laboratory testing have optimized compressor and chiller systems reliability.

• Water-cooled scroll chillers are factory tested.

6 CGWQ-PRC001B-EN

Application Consideration

Product Selection

Both CGWQ and CCAQ products are offered in 7 models each ranging in capacity from 20 to 70nominal tons. See Table 3 and Table 4, p. 11 to select the model best suited for your application.Since actual unit capacity can vary significantly from “nominal capacity”, it is important to baseyour selection on the actual conditions. Selection of the correct model will require attention to theminimum, as well as the full load capacity required. Selection of the proper equipment is animportant part of a successful installation. Equipment sized too large will cycle more frequently andas a potential result lead to poor temperature and humidity control, shortened equipment life andhigher utility costs. Equipment sized too small will not be able to meet peak cooling demands.

Unit location

Units should be installed indoors or protected 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 theoperating weight of the unit. Service clearance must allow for removal of compressors. See“Dimensional Data,” p. 20 for specific clearance requirements. All units must also allow for spaceto service vessels.The unit foundation must be rigid to reduce vibration transmission to aminimum. Use of optional vibration isolation pads is recommended for applications that aresensitive to vibration and noise.

Ambient Limits — CCAQ/CAUJ Combination

Minimum AmbientTemperature Limit

The minimum outdoor ambient temperature for operation of a CCAQ compressor chiller incombination with a CAUJ air cooled condenser is 40°F.This minimum is driven by compressorchiller starting considerations and not by effectiveness of condenser ambient controls once thesystem is up and running. Fan cycling and optional low ambient dampers do not mitigate the lowambient starting problem. On a cold day with outdoor ambient temperature below 40°F the liquidline pressure at the expansion valve inlet is extremely low. On start, the suction pressureimmediately plunges into the freezing range causing a nuisance fault.

Maximum AmbientTemperature Limit

The maximum ambient temperature limit for the CCAQ/CAUJ operation is 110°F.

Condenser Water Limitations

CGWQ water cooled chiller units start and operate satisfactorily over a wide range of loadconditions. Reducing the condenser water temperature below 85°F is an effective method oflowering the power input required. Beyond certain limits, however, the effect of further reducingcondenser water temperature causes a reduction in the pressure drop across the expansion valveto a point where system instability may occur.

In general, continuous machine operation with entering condenser water temperature below 75°Fis not recommended.When the condenser water temperature is expected to drop below 75°F, it isrecommended that some form of condenser water temperature control be used to ensure optimalmachine performance. Condenser water temperatures above 95°F are not recommended except asapproved by factory engineering.

Heat Recovery using condenser water is available, with applications reviewed by factoryengineering. Generally, leaving water of 125°F represents the maximum limit.

CGWQ-PRC001B-EN 7

Application Consideration

Evaporator WaterTreatment

The use of untreated or improperly treated water in chillers may result in scaling, erosion,corrosion, and algae or slime buildup.This will adversely affect heat transfer between the water andsystem components. Proper water treatment must be determined locally and depends on the typeof system and local water characteristics.

Neither salt nor brackish water is recommend for use inTrane chillers. Use of either will lead to ashortened life.Trane encourages the employment of a qualified water treatment specialist, familiarwith local water conditions, to assist in the establishment of a proper water treatment program.

Foreign matter in the chilled water system can also increase pressure drop and, consequently,reduce water flow. For this reason it is important to thoroughly flush all water piping to the unitbefore making the final piping connections to the unit.

The capacities give in the Performance Data section of this catalog are based on water with afouling factor of 0.0001°F·ft²·h/Btu (in accordance withAHRI 550/590). For capacities at other foulingfactors, see Performance Selection Software.

Condenser WaterTreatment

Use of untreated or improperly treated condenser cooling water in any water cooled condensingunit could result in tube fouling, scaling, erosion, corrosion, algae, or slime; and, as a result causereduced performance and increase the potential for unit failure. It is recommended that the servicesof a qualified water treatment specialist be engaged to determine what condenser cooling watertreatment and/or bleed-rate, if any, is advisable.Trane assumes no responsibility for the results ofuntreated or improperly treated water.

Water Pumps

Avoid specifying or using 3600 rpm condenser water and chilled water pumps. Such pumps mayoperate with objectionable noise and vibration. In addition, a low frequency beat may occur dueto the slight difference in operating rpm between water pumps and the scroll compressors.Wherenoise and vibration-free operation is important,Trane encourages the use of 1750 rpm pumps.

Remote Condenser

Remote condensers should be located as close as possible to the chiller to ensure minimumpressure drops of discharge refrigerant. If non-Trane condensers are provided, a subcooling circuitmust be provided in order to achieve cataloged performances (16°F [-8.9°C] subcooling).

8 CGWQ-PRC001B-EN

Model Number Descriptions

Digit 1, 2, 3, 4 — UnitTypeCGWQ=Water-Cooled ChillerCCAQ= Compressor Chiller

Digit 5, 6, 7 — Unit NominalTonnage020 = 20 NominalTons026 = 26 NominalTons030 = 30 NominalTons040 = 40 NominalTons052 = 52 NominalTons060 = 60 NominalTons070 = 70 NominalTons

Digit 8 — Unit VoltageA = 208V/60/3B = 230V/60/3F = 460V/60/3G = 575V/60/3

Digit 9, 10 — Design SequenceA0 = Factory Assigned

Digit 11 — Agency ListingN = NoneE = ETL/ETL-C Listed to meet U.S.

and Canadian Safety Standards

Digit 12 — Water RegulatingValve0 = None1 = With

Digit 13 — EvaporatorTempRange0 = Standard Cooling

42°F–60°F [4.4°C–5.5°C]1 = Standard Cooling/Ice Making

20°F–60°F [-6.7°C–15.6°C]

Digit 14 — Power ConnectionT = Terminal BlockD = Non-Fused Disconnect Switch

Digit 15 — Sound Attenuator0 = No Sound Attenuation3 = Compressor Sound Blanket(s)9 = Factory Sound Enclosure

Cabinet(s)

Digit 16 — Remote Interface(Digital Comm)0 = None2 = LonTalk®

4 = BACnet® Ms/TP5 = BACnet IP6 = MODBUS®

8 = Johnson N2

Digit 17 — Power Monitor0 = None1 = With

CGWQ-PRC001B-EN

Digit 18 — Neoprene IsolatorPads0 = None1 = With

Digit 19 — Flow Switch0 = None1 = With

Digit 20 — Evaporator FluidType0 = Water2 = Ethylene Glycol3 = Propylene Glycol4 = Methanol

Digit 21 — Condenser FluidType0 = Water2 = Ethylene Glycol3 = Propylene Glycol9 = Air-Cooled Condenser

Digit 22 — Special Options0 = None1 = With

Digit 23 — Base Rail Forklifting0 = None1 = With

9

10 CGWQ-PRC001B-EN

General Data

Table 1. General data for CGWQ water-cooled chillers(a)

(a) Data containing information on two circuits formatted as follows: Circuit 1, Circuit 2

Unit Size 20 26 30 40 52 60 70

CompressorQuantity 2 2 2 2,2 2,2 2,2 2,2

Nominal Tons(b) (tons)

(b) Nominal compressor sizes based on 60 Hz.

10/10 13/13 15/15 10/10,10/10 13/13,13/13 15/15,15/15 15/20,15/20

Steps of Unloading (%) 100-50 100-50 100-50 100-75-50-25 100-75-50-25 100-75-50-25 100-71-43-21

Uncertified “A” Weighted Sound (dBA) 77 81 81 78 81 82 83

Uncertified “A” Weighted Sound w/Sound Attenuation Cabinet (dBA) 70 73 73 70 72.5 74 TBD

EvaporatorWater Storage (gal) 1.8 2.4 2.8 3.9 5.0 5.6 7.7

Minimum Flow (gpm) 35 45 45 64 78 90 102

Maximum Flow (gpm) 71 85 104 138 168 197 236

Condenser (each)Water Storage (each) (gal) 3.1 3.6 4.4 3.1 3.6 4.4 4.4

Minimum Flow (each) (gpm) 20 40 48 20 40 48 48

Maximum Flow (each) (gpm) 70 135 164 70 135 164 164

General UnitRefrigerant R-410A R-410A R-410A R-410A R-410A R-410A R-410A

Number of Independent Refrigerant Circuits 1 1 1 2 2 2 2

Refrigerant Charge per Circuit (approx.) (lb) 40 52 52 40,40 52,52 52,52 62,62

Oil Type 3MAPOE 3MAPOE 3MAPOE 3MAPOE 3MAPOE 3MAPOE 3MAPOE

Oil Charge each Compressor (oz) 110/110 110/110 110/110 110/110,110/110

110/110,110/110

110/110,110/110

110/148,110/148

Table 2. General data for CCAQ compressor chillers(a)

(a) Data containing information on two circuits formatted as follows: Circuit 1, Circuit 2

Unit Size 20 26 30 40 52 60 70

CompressorQuantity 2 2 2 2,2 2,2 2,2 2,2

Nominal Tons(b) (tons)

(b) Nominal compressor sizes based on 60 Hz.

10/10 13/13 15/15 10/10,10/10 13/13,13/13 15/15,15/15 15/20,15/20

Steps of Unloading (%) 100-50 100-50 100-50 100-75-50-25 100-75-50-25 100-75-50-25 100-71-43-21

Uncertified “A” Weighted Sound (dBA) 77 81 81 78 81 82 83

Uncertified “A” Weighted Sound w/Sound Attenuation Cabinet (dBA) 70 73 73 70 72.5 74 TBD

EvaporatorWater Storage (gal) 1.8 2.4 2.8 3.9 5.0 5.6 7.7

Minimum Flow (gpm) 35 45 45 64 78 90 102

Maximum Flow (gpm) 71 85 104 138 168 197 236

General UnitRefrigerant R-410A R-410A R-410A R-410A R-410A R-410A R-410A

Number of Independent Refrigerant Circuits 1 1 1 2 2 2 2

Refrigerant Charge per Circuit (approx.)(c) (lb)

(c) Charge amounts shown are only amounts in CCAQ. Additional amount to be calculated based upon piping size, length and component capacity.

6 6 7 6,6 6,6 7,7 8,8

Oil Type 3MAPOE 3MAPOE 3MAPOE 3MAPOE 3MAPOE 3MAPOE 3MAPOE

Oil Charge each Compressor (oz) 110/110 110/110 110/110 110/110,110/110

110/110,110/110

110/110,110/110

110/148,110/148

CGWQ-PRC001B-EN 11

Performance Data

Table 3. CGWQ full load performance data

Unit Size Tons kW Input Full Load EER IPLV EER

20 21.1 15.5 16.3 19.9

26 26.2 20.4 15.4 19.6

30 31.2 24.8 15.1 18.3

40 42.6 30.8 16.6 20.4

52 52.7 40.4 15.7 20.2

60 61.8 47.9 15.5 19.4

70 70.9 54.8 15.5 19.5

Notes:

1. Rated in accordance with AHRI Standard 550/590, based on TOPSS version 154: evaporator leaving temperature of 44°F and 2.4 gpm/ton, condenser entering temperature of 85°F and 3 gpm/ton with condenser relief down to 65°F at 50% and 25% loads, evaporator fouling of 0.0001°F.ft2.h/Btu and condenser fouling of 0.00025°F.ft2.h/Btu

2. Consult Trane representative for additional performance information 3. EER - Energy Efficiency Ratio (Btu/w.h)

Table 4. CCAQ full load performance table

Unit size TonsCompressor Input

kW EER Evap GPM

20 18.80 20.80 10.43 45.10

26 23.60 26.30 10.68 56.60

30 28.80 31.00 11.02 69.10

40 38.70 41.60 11.08 92.90

52 45.30 53.50 10.11 108.70

60 56.80 61.50 11.04 136.30

70 65.80 70.20 11.19 157.90

Notes:

1. Rated in accordance with AHRI Standard 550/590, based on TOPSS version 162: evaporator leaving temperature of 44oF and 2.4 gpm/ton, saturated discharge temperature of 125oF and liquid temperature of 105oF, evaporator fouling of 0.0001oF-ft2-h/Btu

2. Consult Trane representative for additional performance information, including matched condenser ratings. 3. EER - Energy Efficiency Ratio (BTU/w-h)

Controls

Human Interfaces

Trane Scroll Chillers offer the completely integrated controller with an easy-to-use operatorinterface panel, LCD graphics display.The display provides a “Window” concept allowing the userto navigate the ‘Window’ in all directions.This advanced interface allows the user to access allinformation concerning Relay Outputs,Analog Outputs, Sensor Inputs, Set Points,Alarms, ServiceTools, Chiller States, and Lockouts as well as graph all sensor data.

Hardware Protection

A six (6) layer microprocessor printed circuit board provides the highest level of machine reliability.Each relay output has its own snubber on both the normally open contacts and the normally closedcontacts.The relay outputs are individually fused to farther protect the system from shorts.Thisprotection is rounded out through poly fuse protection on the sensor inputs.

System Protection

A complete safety lockout system protects the compressor operation to avoid compressor andevaporator failures.The controller directly senses pressures, temperatures, ampere, motor faults,etc. All control variables that govern the operation of the chiller, evaporator and condenser areevaluated every second for exact control and protection.

Standalone Controls

Interface to standalone units is very simple; only a remote auto/stop for scheduling is required forunit operation. Signals from a time clock or some other remote device can be wired to the externalauto/stop input.

Standard Features

• External Auto/Stop — A jobsite provided contact closure will turn the unit on and off.

• ChilledWater Flow Interlock —A jobsite provided contact closure from a flow proving device(mandatory)

• Emergency Stop (optional)—A jobsite supplied contact opening wired to this input will turnthe unit off and require a manual reset of the unit microcomputer.This closure is typicallytriggered by a jobsite supplied system such as a fire alarm.

• Chilled Water Pump Control (optional)— Unit controls can provide an output to control thechilled water pump(s). One contact closure to the chiller is all that is required to initiate thechilled water system.

Figure 1. Operator interface

12 CGWQ-PRC001B-EN

Controls

• ChilledWater Reset— Controller will accept analog input from BMS system for chilled waterreset (Optional).

• Condenser Control — Unit controls provide an output to control the condenser water pump(CGWQ) or condenser fan(s) (CCAQ). In addition, the controller allows variable frequencydrive control of cooling tower fan motors, condenser fan motors or ambient controldampers for pin point control of head pressure.

Simple Interface with Other Control Systems

Controls afford simple interface with other systems, such as time clocks, building automationsystems, and ice storage systems.This gives you the flexibility to meet job requirements withoutthe need to learn a complicated control system.This setup has the same standard features as astand-alone water chiller, with the possibility of having additional optional features.

Easy Interface to All Building Management Systems

Controlling the scroll chiller with building management systems is state-of-the-art, yet simple withBACnet®, Modbus™, Johnson N2 or LonTalk® Communications Interface for Chillers.Thecontroller supports all of the standard BMS communications systems.

• BACnet is ASHRAE’s standard BMS communications protocol which allowscommunications between different manufacturers’ equipment. BACnet IP is standard,BACnet MS/TP is optional.

• Modbus is a popular communications protocol used by many manufactures tocommunicate to different manufactures equipment.

• Johnson N2 is a proprietary communication system developed for use on JohnsonControls BMS systems.

• LonTalk is a communications protocol developed by the Echelon Corporation.The LonMarkassociation develops control profiles using the LonTalk communication protocol.

Available Chiller Inputs

• Chiller RUN/STOP

• Entering LiquidTemperature

• Leaving LiquidTemperature

• Circuit Disable

• Suction Circuit Pressure

• Suction CircuitTemperature

• Discharge Circuit Pressure

• Circuit Amps (by comp)

• Circuit Motor Fault

• AmbientTemperature (optional)

• Evaporator Flow Status

Available Chiller Outputs

• Chilled Water Pump

• Condenser Pump

• Condenser Fan

• Alarm

CGWQ-PRC001B-EN 13

Controls

Analog Outputs

Condenser Fans, Dampers, or WRV Position

Compressor Starts/Run-Times

Provides the number of starts and run times for each compressor.

Alarm Descriptor

Provides alarm messages based on predetermined criteria

Chiller Status

Indicates the running modes and states of the chiller, i.e. Loading, Unloading, Holding, High DiscPSI Hold, Low Suction Hold, In Safety, In Alarm mode, etc…

Chiller Hardwire Inputs Include:

• Chiller RUN/STOP

• Circuit Enable/Disable

• External Chilled Water Reset Set point

Warning & Alarms

The unit provides a complete Warning / Lockout System. Please refer to the Chiller Manual forcomplete details.

14 CGWQ-PRC001B-EN

CGWQ-PRC001B-EN 15

Electrical

Table 5. Electrical data — CGWQ water cooled chillers & CCAQ compressor chillers

Unit Size

Unit Wiring Data Compressors

Control KWRated Voltage

Minimum Circuit

AmpacityMaximum Fuse Size

Recommended Dual Element

Fuse Size QtyRefrig. Circuits

Nom. Tons

RLA (ea)

LRA (ea)

20

200-230/3/60 75 100 90

2 1 10/10

33 239 0.16

460/3/60 41 50 45 18 125 0.16

575/3/60 29 40 35 13 80 0.16

26

200-230/3/60 116 150 125

2 1 13/13

51 300 0.16

460/3/60 52 70 60 23 150 0.16

575/3/60 45 60 50 20 109 0.16

30

200-230/3/60 126 175 150

2 1 15/15

56 340 0.16

460/3/60 61 80 70 27 173 0.16

575/3/60 54 70 60 24 132 0.16

40

200-230/3/60 142 150 150

4 2 10/10,10/10

33 239 0.24

460/3/60 77 90 80 18 125 0.24

575/3/60 55 60 60 13 80 0.24

52

200-230/3/60 218 250 225

4 2 13/13,13/13

51 300 0.24

460/3/60 99 110 100 23 150 0.24

575/3/60 85 100 90 20 109 0.24

60

200-230/3/60 238 250 250

4 2 15/15,15/15

56 340 0.24

460/3/60 115 125 125 27 173 0.24

575/3/60 102 110 110 24 132 0.24

70

208-230/3/60 279 350 300

4 2 15/20,15/20

56/74 340/505 0.24

460/3/60 123 150 125 27/30 173/225 0.24

575/3/60 104 125 110 24/25 132/180 0.24

Notes:

1. Use copper conductors only. 2. Local codes may take precedence. 3. Voltage Utilization Range:

Rated Voltage208-230/3/60

460/3/60380/3/60575/3/60

Utilization Range187-253414-506342-418518-632

Electrical Connections

CGWQ

Control Panel Representation

PANELGROUND

Optional: Disconnect (Factory Installed)

DSW1

PDB1

L1 L2 L3

UNIT CONTROLLER

A-1

A-2GND

23 24

23 24

20 2118 19

20 2118 19 22

2216 171514

16 171514

131210 11

131210 11

865 7

865 7

3 41 2

3 41 2 9

9

TBA

4

5

Optional: For CGWQ 20-30 ton, Cooling Tower Pump Enable

Optional: Alarm DryContacts

REQUIRED : Flow Switch (flowproving device)

Optional: Remote Run/StopInterface

Optional: For CGWQ 40-70 ton,Cooling Tower Pump Enable

Field Wiring - CGWQ Scroll Water Chillers

WARNINGHazardous voltage!Disconnect all electrical powerincluding remote disconnects beforeserving unit. Follow proper lockout/tagout procedures to ensure powercannot be inadverently energized.Failure to do so can cause death orserious injury.

CAUTIONUse copper conductors only!Unit terminals are not designed toaccept other type conductors. Failureto use copper conductors may causeequipment damage.

Notes :

All three-phase motors supplied with the unit are protected under 1.primary single-phase failure conditions.All customer control-circuit wiring must have a minimum rating of 2.150V.All field wiring must be in accordance with applicable local codes.3.Line voltage options. Single or dual source power may be specified. 4.Drawing covers single source power only. All field wiring must be in accordance with National Electric Code and State & Local requirements.(Required) Factory supplied or approved alternate field installed flow 5.proving device connection.

CAUTIONDo not energize the unit until check-out and start-up procedures havebeen completed.

4

5

SIZE DWG. NO.

AREV.

MATERIAL

FINISH

DO NOT SCALE DRAWINGAPPLICATION

USED ONNEXT ASSY

DIMENSIONS ARE IN INCHESTOLERANCES:FRACTIONALANGULAR: MACH BEND TWO PLACE DECIMAL THREE PLACE DECIMAL

NAME DATE

DRAWN

CHECKED

ENG APPR.

MFG APPR.

Q.A.

SHEET 1 OF 1

COMMENTS:

CGWQ Field Wiring Diagram

4-13-12SMH

CGWQ Field Wiring 0WEIGHT: SCALE:1:5

16 CGWQ-PRC001B-EN


CCAQ 20-30T


PANELGROUND


DSW1

PDB1

L1 L2 L3

UNIT CONTROLLER

A-1

A-2GND

A-1

A-2GND

Optional: Damper Control

23 24

23 24

20 2118 19

20 2118 19 22

2216 171514

16 171514

131210 11

131210 11

865 7

865 7

3 41 2

3 41 2 9

9

TBA

4

5

6

Condensing Unit Control Power




Condensing Unit Fan 2

Field Wiring - CCAQ 20-30 Ton Compressor Chiller



Notes :

All three-phase motors supplied with the unit are protected under 1.primary single-phase failure conditions.All customer control-circuit wiring must have a minimum rating of 2.150V.All field wiring must be in accordance with applicable local codes.3.Line voltage options. Single or dual source power may be specified. 4.Drawing covers single source power only. All field wiring must be in accordance with National Electric Code and State & Local requirements.(Required) Factory supplied or approved alternate field installed flow 5.proving device connection.(Optional) Damper control option. Refer to operation and 6.maintenance manual for additional information. This point intended to operate a low ambient damper on a remote air-cooled condenser. Wiring to be 2-wire shielded cable between outdoor unit and Trane indoor chiller.If installing with a Trane CAUJ air-cooled condenser, more specific 7.field wiring instructions can be found in the operations and maintenance manual.


4

5

6



SIZE DWG. NO.

AREV.

MATERIAL

FINISH


USED ONNEXT ASSY


NAME DATE

DRAWN

CHECKED

ENG APPR.

MFG APPR.

Q.A.

SHEET 1 OF 1

COMMENTS:

CCAQ 20-30 TonField Wiring

Diagram

4-13-12SMH

Single Circuit CCAQ Field Wiring 0WEIGHT: SCALE:1:5

CGWQ-PRC001B-EN 17


CCAQ 40-70T


PANELGROUND


DSW1

PDB1

L1 L2 L3

UNIT CONTROLLER

A-1

A-2GND

A-1

A-2GND

Optional: Damper Control

23 24

23 24

20 2118 19

20 2118 19 22

2216 171514

16 171514

131210 11

131210 11

865 7

865 7

3 41 2

3 41 2 9

9

TBA

4

5

6




Field Wiring - CCAQ 40-70 Ton Compressor Chillers



Notes :

All three-phase motors supplied with the unit are protected under 1.primary single-phase failure conditions.All customer control-circuit wiring must have a minimum rating of 2.150V.All field wiring must be in accordance with applicable local codes.3.Line voltage options. Single or dual source power may be specified. 4.Drawing covers single source power only. All field wiring must be in accordance with National Electric Code and State & Local requirements.(Required) Factory supplied or approved alternate field installed flow 5.proving device connection.(Optional) Damper control option. Refer to operation and 6.maintenance manual for additional information. This point intended to operate low ambient dampers on a remote air-cooled condenser, (1) damper per AO. Wiring to be 2-wire shielded cable between outdoor unit and Trane indoor chiller.If installing with a Trane CAUJ air-cooled condenser, more specific 7.field wiring instructions can be found in the operations and maintenance manual.


4

5

6

5 9

4

3

75

842

6

7

2 8

TBD

6

1 93

1

Condensing Unit Control Power

Circuit 1 Fan 2

Circuit 1 Fan 3

Circuit 2 Fan 1

Circuit 2 Fan 2

Circuit 2 Fan 3

Circuit 2 Fan 4

Circuit 2 Fan 4

SIZE DWG. NO.

AREV.

MATERIAL

FINISH


USED ONNEXT ASSY


NAME DATE

DRAWN

CHECKED

ENG APPR.

MFG APPR.

Q.A.

SHEET 1 OF 1

COMMENTS:

CCAQ 40-70 TonField Wiring

Diagram

4-13-12SMH

Dual Circuit CCAQ Field Wiring 0WEIGHT: SCALE:1:5

18 CGWQ-PRC001B-EN


Control of CAUJ Fans and Optional Low Ambient Dampers

Application requirement

CCAQ Unit Controller must control condenser ambient control devices such as fan cycling andoptional low ambient dampers.As a result the interconnecting field wiring must be done by others.For pairingTrane CCAQ Compressor Chiller withTrane CAUJ Air Cooled Condenser, the followingfield wiring is to be done by others

Fan Cycling Control

One control wire for each condenser fan plus a common must be run between CCAQ compressorchiller and CAUJ condenser.

Low Ambient Dampers (when applicable)

One shielded pair for each condenser must be run between CCAQ compressor chiller and CAUJ aircooled condenser.

Notes:

• CCAQ products are not suitable for applications where the matching condenser is located in anambient temperature below 40°F or above 110°F.

• Optional CAUJ low ambient dampers do not make the CCAQ/CAUJ combination suitable for operation when outdoor ambient temperature is less than 40°F. Low ambient dampers are not generally needed for outdoor ambient temperatures above 40°F.

CGWQ-PRC001B-EN 19

Dimensional Data

CGWQ/CCAQ 20-30Ton

T S

V W

R N

U

M

1

2

3

4

11

12

A

B

C

5

667

8

71616

(b)

(a)

D

G F

E

J

K

L

I

H 910

13 14

15

(c)

(c)

20 CGWQ-PRC001B-EN

Dimensional Data

Table 6. CGWQ/CCAQ 20-30 ton — in (mm)

CGWQ 20inch (mm)

CGWQ26inch (mm)

CGWQ30inch (mm)

CCAQ 20inch (mm)

CCAQ26inch (mm)

CCAQ30inch (mm)

A(a) 64 (1626)(a) 65.4 (1661)(a) 68.5 (1740)(a) 64 (1626) 65.4 (1661) 68.5 (1740)

B 54.2 (1378) 54.2 (1378) 54.2 (1378) 54.2 (1378) 54.2 (1378) 54.2 (1378)

C(b) 5.9 (150)(b) 12.1 (308)(b) 12.1 (308)(b) N/A N/A N/A

D 25.2(640) 25.2(640) 25.2(640) 25.2(640) 25.2(640) 25.2(640)

E 32.8 (836) 32.8 (836) 34.2 (869) 32.8 (836) 32.8 (836) 34.2 (869)

F 40 (1016) 40 (1016) 40 (1016) 40 (1016) 40 (1016) 40 (1016)

G 4.1 (103) 5.8 (144) 8.8 (224) 4.1 (103) 5.8 (144) 8.8 (224)

H 20 (508) 20 (508) 20 (508) 20 (508) 20 (508) 20 (508)

I 36 (914) 36 (914) 36 (914) 36 (914) 36 (914) 36 (914)

J(c) 36(c) (914) 36(c) (914) 36(c) (914) 36(c) (914) 36(c) (914) 36(c) (914)

K(c) 36(c) (914) 36(c) (914) 36(c) (914) 36(c) (914) 36(c) (914) 36(c) (914)

L 24 (610) 24 (610) 24 (610) 24 (610) 24 (610) 24 (610)

M 36 (914) 36 (914) 36 (914) 36 (914) 36 (914) 36 (914)

N 41.1 (1046) 41.1 (1046) 41.1 (1046) 41.1 (1046) 41.1 (1046) 41.1 (1046)

R 28.8 (731) 28.8 (731) 28.8 (734) 28.8 (731) 28.8 (731) 28.8 (734)

S 3.8 (99) 3.8 (99) 5.2 (132) 3.8 (99) 3.8 (99) 5.2 (132)

T 0.8 (19) 0.8 (19) 0.4 (8) 0.8 (19) 0.8 (19) 0.4 (8)

U 9.6 (243) 11.4 (289) 11.4 (289) N/A N/A N/A

V 5.8 (148) 5.8 (148) 5.8 (148) N/A N/A N/A

W 10 (254) 10 (254) 10 (254) N/A N/A N/A

1 2.5 (64) VIC 2.5 (64) VIC 2.5 (64) VIC 2.5 (64) VIC 2.5 (64) VIC 2.5 (64) VIC

2 2 (51) VIC 2 (51) VIC 2.5 (64) VIC 2 (51) VIC 2 (51) VIC 2.5 (64) VIC

3 2 (51) FPT 3 (76) FPT 3 (76) FPT N/A N/A N/A

4 2 (51) FPT 3 (76) FPT 3 (76) FPT N/A N/A N/A

Reference

1 Evaporator Water Inlet 9Condenser Return Waterbox End (CGWQ only)- minimum clearance (for maintenance)

2 Evaporator Water Outlet 10Condenser Supply Waterbox End (CGWQ only) -minimum clearance (for maintenance)

3 Condenser Water Inlet (CGWQ only) 11 Condenser (CGWQ only)

4 Condenser Water Outlet (CGWQ only) 12 Evaporator

5 Power Disconnect (Optional) 13 Panel Power Section - door swing 31.3 inch (796.9 mm)

6 Power Wire 14 Panel Control Section - door swing 31.3 inch (796.9 mm)

7 Control Wire 15Additional minimum clearance needed for units with water regulating valve option

8 Control Panel 16 1-1/8” Liquid Line & 1-3/8” Discharge Line (CCAQ)

(a) For units with water regulating valve option, add 16 inches (407 mm) maximum to the overall unit length, “A”(b) For units with water regulating valve option, add 15.5 inches (394 mm) inches to the condenser water outlet dimension, “C”(c) 42 inch (1067 mm) clearance required to other ground parts, two units with panels facing each other or other live parts require a clearance of 48 inch

(1220 mm)

CGWQ-PRC001B-EN 21

Dimensional Data

CGWQ/CCAQ 40-70Ton

S T

V W

R N

X Y

Z U

M

411

11

3

1

2

12

C

B

BB AA

A

66 77

85

4

3

1616

(b)

(a)

G

D E

F

L

K

J

I

H

91015

13 14

(a)

(c)

(c)

22 CGWQ-PRC001B-EN

Dimensional Data

Table 7. CGWQ/CCAQ 40-70 ton — in (mm)

CGWQ 40 CGWQ 52 CGWQ 60 CGWQ 70 CCAQ 40 CCAQ 52 CCAQ 60 CCAQ 70

A(a) 76.2 (1937)(a) 87.6 (2226)(a) 87.6 (2226)(a) 93.5 (2375)(a) 70.8 (1800) 74 (1878) 75.8 (1924) 80.8 (2054)

AA(b) 11.6 (296)(b) 19.8 (503)(b) 19.8 (503)(b) 19.8 (503)(b) N/A N/A N/A N/A

B 72.2 (1835) 72.2 (1835) 72.2 (1835) 72.2 (1835) 72.2 (1835) 72.2 (1835) 72.2 (1835) 72.2 (1835)

BB(a) 19.6 (499)(a) 29.8 (757)(a) 29.8 (757)(a) 29.8 (757)(a) N/A N/A N/A N/A

C 6.9 (175) 13.1 (333) 13.1 (333) 13.1 (333) N/A N/A N/A N/A

D 28.2 (716) 28.2 (716) 28.2 (716) 28.2 (716) 28.2 (716) 28.2 (716) 28.2 (716) 28.2 (716)

E 34.8 (884) 34.8 (884) 34.8 (884) 34.8 (884) 34.8 (884) 34.8 (884) 34.8 (884) 34.8 (884)

F 38 (965) 38 (965) 38 (965) 38 (965) 42 (1067) 42 (1067) 42 (1067) 42 (1067)

G 9.5 (241) 12.5 (318) 14.4 (364) 13 (330) 9.5 (241) 12.5 (318) 14.4 (364) 9 (229)

H 20 (508) 20 (508) 20 (508) 20 (508) 20 (508) 20 (508) 20 (508) 20 (508)

I 36 (914) 36 (914) 36 (914) 36 (914) 36 (914) 36 (914) 36 (914) 36 (914)

J(c) 36 (914)(c) 36 (914)(c) 36 (914)(c) 36 (914)(c) 36 (914)(c) 36 (914)(c) 36 (914)(c) 36 (914)(c)

K(c) 36 (914)(c) 36 (914)(c) 36 (914)(c) 36 (914)(c) 36 (914)(c) 36 (914)(c) 36 (914)(c) 36 (914)(c)

L 24(610) 24(610) 24(610) 24(610) 24(610) 24(610) 24(610) 24(610)

M 36 (914) 36 (914) 36 (914) 36 (914) 36 (914) 36 (914) 36 (914) 36 (914)

N 54.5 (1384) 54.5 (1384) 54.5 (1384) 62.8 (1594) 54.5 (1384) 54.5 (1384) 54.5 (1384) 62.8 (1594)

R 45.8 (1162) 45.8 (1162) 45.8 (1162) 46.1 (1172) 45.8 (1162) 45.8 (1162) 45.8 (1162) 46.1 (1172)

S 0.4 (8) 0.4 (8) 0.4 (8) 1.4 (34) 0.4 (8) 0.4 (8) 0.4 (8) 1.4 (34)

T 3.8 (98) 3.8 (98) 3.8 (98) 2.8 (73) 3.8 (98) 3.8 (98) 3.8 (98) 2.8 (73)

U 4.0 (102) 2.1 (54) 2.1 (54) 2.1 (54) N/A N/A N/A N/A

V 5.5 (139) 5.6 (141) 5.6 (141) 5.6 (141) N/A N/A N/A N/A

W 9.8 (247) 9.8 (246) 9.8 (246) 9.8 (246) N/A N/A N/A N/A

X 23.5 (597) 23.6 (598) 23.6 (598) 23.6 (598) N/A N/A N/A N/A

Y 27.8 (705) 27.8 (703) 27.8 (703) 27.8 (703) N/A N/A N/A N/A

Z 20.1 (511) 20.8 (527) 20.8 (527) 20.8 (527) N/A N/A N/A N/A

1 3 (76) VIC 3 (76) VIC 3 (76) VIC 3 (76) VIC 3 (76) VIC 3 (76) VIC 3 (76) VIC 3 (76) VIC

2 3 (76) VIC 3 (76) VIC 3 (76) VIC 3 (76) VIC 3 (76) VIC 3 (76) VIC 3 (76) VIC 3 (76) VIC

3 3 (76) VIC 4 (102) VIC 4 (102) VIC 4 (102) VIC N/A N/A N/A N/A

4 3 (76) VIC 4 (102) VIC 4 (102) VIC 4 (102) VIC N/A N/A N/A N/A

Reference

1 Evaporator Water Inlet 9 Condenser Return Waterbox End (CGWQ only)- minimum clearance (for maintenance)

2 Evaporator Water Outlet 10Condenser Supply Waterbox End (CGWQ only) -minimum clearance (for maintenance)

3 Condenser Water Inlet (CGWQ only) 11 Condenser (CGWQ only)

4 Condenser Water Outlet (CGWQ only) 12 Evaporator

5 Power Disconnect (Optional) 13 Panel Power Section - door swing 31.3 inch (796.9 mm)

6 Power Wire 14 Panel Control Section - door swing 31.3 inch (796.9 mm)

7 Control Wire 15 Additional minimum clearance needed for units with water regulating valve option

8 Control Panel 16 1-1/8” Liquid Line & 1-3/8” Discharge Line (CCAQ)

(a) For units with water regulating valve option, add 14 inches (356 mm) maximum to condenser water inlet dimension, ”BB”, and overall unit length, “A”(b) For units with water regulating valve option, add 15 inches (381 mm) to the condenser water outlet dimension, “AA”(c) 42 inch (1067 mm) clearance required to other ground parts, two units with panels facing each other or other live parts require a clearance of 48 inch

(1220 mm)

CGWQ-PRC001B-EN 23

24 CGWQ-PRC001B-EN

Weight Data

Table 8. Weights

Shipping Operating

Unit Size lbs kg lbs kg

CGWQ

20 1310 594 1200 544

26 1430 649 1330 603

30 1490 676 1400 635

40 2170 984 2100 953

52 2350 1066 2300 1043

60 2690 1220 2655 1204

70 2990 1356 2972 1348

CCAQ

20 1010 458 875 397

26 1275 578 1145 519

30 1410 640 1285 583

40 1510 685 1390 631

52 1570 712 1460 662

60 1850 839 1745 792

70 2125 964 2035 923

Mechanical Specifications

CGWQ Water Cooled Chillers

General

All CGWQ series water cooled chillers are pressure tested, dehydrated, charged with refrigerantand oil, and run tested at full and part load conditions prior to shipment. Factory assembled unitsare shipped complete with operating charge of POE compressor oil and 410A refrigerant. Exposedmetal surfaces are painted with air-dry beige direct to metal single component paint prior toshipment. Units only require the field connection of chilled and condenser water piping, and powerand control wiring to control panel terminal block. Chilled water inlet and outlet connections areVictaulic and condenser water inlet and outlet connections are FPT on CGWQ 20, 26 and 30, andVictaulic on CGWQ 40, 52, 60 and 70. Chilled water flow proving device such as a flow switch isrequired and must be field installed.

Agency Listing

• AHRI Certified

• ETL Listed to U. S. and Canadian safety standards.

Compressor – Motor

Fully hermetic direct drive scroll compressors are mounted on vibration isolators. Lubricationsystem – Oil distribution system includes an oil level sight glass and is arranged to ensure adequatelubrication during starting, stopping and normal operation. Motor is suction gas cooled, runs at aconstant speed of 3600 rpm, has winding thermostats for motor protection and is designed foracross-the-line start. Each refrigerant circuit has two (2) compressors arranged and piped as atandem set.

Evaporator

Brazed plate evaporator is UL Listed with refrigerant side maximum working pressure of 650 psigand a minimum water side working pressure of 300 psig. CGWQ 20, 26 and 30 evaporators havea single refrigerant circuit and single chilled water circuit, while the CGWQ 40, 52, 60 and 70evaporators have two (2) refrigerant circuits and one (1) chilled water circuit. Evaporator isinsulated with 0.5 inch (12.7 mm) thick closed-cell flexible insulation with a K value of 0.26 and isfurnished with core, inlet and outlet water temperature sensors.

Integral Water Strainer

Evaporator is protected by an integral and easily accessible 20 mesh wye strainer on the water inlet.Strainer screen is removable for service and cleaning.

Condenser

Condensers are mechanically cleanable shell-and-tube type with enhanced copper tube geometrywith 0.025 wall thickness, removable epoxy coated water plates to facilitate cleaning, and epoxycoated tube sheets to minimize pitting caused by galvanic action. Shell side (refrigerant) workingpressure is 600 psig at 150 °F and bears the ASME stamp.The tube side (water) working pressureis 150 psig at 150 °F. CGWQ 20, 26 and 30 models have a single refrigerant circuit and have a one(1) water cooled condenser while CGWQ 40, 52, 60 and 70 models have two (2) refrigerant circuitsand have two (2) water condensers. Each condenser has a single water inlet and a single wateroutlet.A ship loose factory manifold kit is provided for the CGWQ 40, 52, 60 and 70 models allowingsingle point inlet and outlet water connection.

CGWQ-PRC001B-EN 25


Optional Water Regulating Valve and Discharge Pressure Control

Provisions must be made for the control of condenser water flow and temperature that results instable Saturated DischargeTemperature (SDT) between 80°F and 128°F through all steady state,part load and transient operating conditions.

Optional factory installed water regulating valve(s), controlled by CGWQ unit controller, isrecommended.

Refrigerant Circuit

CGWQ 20, 26 and 30 models have a single refrigerant circuit, while the CGWQ 40, 52, 60 and 70models have two (2) refrigerant circuits. Each refrigerant circuit has liquid line valve, liquid linedrier, solenoid valve, refrigerant sight glass and thermostatic expansion valve.

Control Panel

Control panel contains a power distribution section and a controls section which includes thepowerful CGWQ microprocessor unit controller and door mounted controller display.

Power distribution section contains input power and ground lugs for customer connection, across-the-line contactors, non-fused disconnect (optional), current transformers, control powertransformers with primary and secondary fuses, and power monitor (optional).

Controls section contains the CGWQ unit controller with standard and optional expansion boards,keyboard and display on exterior of control panel door, service friendly terminal strips to facilitatecircuit diagnosis and separate terminal strip for field connection of“Remote Run/Stop” contact andrequired chilled water flow proving device.

The CGWQ unit controller monitors, displays and logs operating and fault conditions, controlsleaving chilled water temperature, and provides safety protection for low and high refrigerantoperating pressure, low refrigerant superheat, low chilled water temperature, low chilled waterflow via customer provided and connected flow proving device, compressor over amperagecondition and abnormal power conditions when fitted with optional power monitor.

Mechanical high and low pressure switches and compressor thermal protection is also provided.

The CGWQ unit controller controls the chilled water leaving temperature using proportional,integral, derivative (PID) logic and has RS485 and Ethernet communications ports for userinteractive communication, or for interface with Building Management System (BMS). Controllerhas standard BMS compatibility with BACnet® IP and Modbus™ RTU and can be fitted with anoptional interface gateway for compatibility with Johnson N2, LonTalk® and BACnet MS/TP.Thecontroller is capable of responding to a BMS signal for “Run/Stop”, “Leaving Chilled WaterTemperature Reset” or “Load Shedding”. “Leaving Chilled WaterTemperature” can also be resetusing a 0 to 5 VDC input signal.

Operator Interface

Exterior of control panel door has a unit controller interface with keypad and 128 X 64 dot pixeldisplay screen. Controller can be accessed using the local keypad and display screen for all unitcontrol set points, faults and alarm conditions with history, and operating conditions in clearlanguage format for easy interpretation by the user / operator. Controller can also be accessed froma remote computer such as a laptop using MCS Connect software and local RS-232 interface portfor all functions plus down loading fault history and reviewing history graphically.The controllerstores 1,008 packets of information that can be graphically present on the remote computer. Datecan be taken for the graphical display based on the time interval that is set.The time interval isfactory set at 15 seconds, but is adjustable. Up to 99 fault conditions are stored in the controller and30 seconds of history is saved any time a fault occurs that results in a compressor lockout.

26 CGWQ-PRC001B-EN


Insulation

All cold surfaces are insulated with 0.5 inch (20mm) thick closed-cell flexible insulation with a Kvalue of 0.26.

CCAQ Compressor Chiller

General

All CCAQ series compressor chillers are pressure tested, dehydrated, charged with refrigerant (testcharge) and oil, and run tested at full and part load conditions prior to shipment. Factory assembledunits are shipped complete with operating charge of POE compressor oil and a nitrogen holdingcharge in the refrigerant circuit. Exposed metal surfaces are painted with air-dry beige direct tometal single component paint prior to shipment. Units only require the field connection of chilledwater piping, refrigerant discharge and liquid lines and power and control wiring to control panelterminal block. Chilled water inlet and outlet connections are Victaulic and refrigerant lines arecopper sweat. Units require field installed liquid line filter driers and chilled water flow provingdevice such as a flow switch. Additionally, refrigerant circuits are to be sealed, dehydrated,evacuated and charged with refrigerant R-410A in the field by others prior to startup.

Agency Listing

The CCAQ compressor chiller is ETL Listed to U. S. and Canadian safety standards.

Application Range

The minimum outdoor ambient temperature for operation of a CCAQ compressor chiller incombination with an outdoor condenser is 40°F.The maximum refrigerant saturated condensingtemperature is 140°F.

Compressor – Motor

Fully hermetic direct drive scroll compressors are mounted on vibration isolators. Lubricationsystem – Oil distribution system includes an oil level sight glass and is arranged to ensure adequatelubrication during starting, stopping and normal operation. Motor is suction gas cooled, runs at aconstant speed of 3600 rpm, has winding thermostats for motor protection and is designed foracross-the-line start. Each refrigerant circuit has two (2) compressors arranged and piped as atandem set.

Evaporator

Brazed plate evaporator is UL listed with refrigerant side maximum working pressure of 650 psigand a minimum water side working pressure of 300 psig. CCAQ 20, 26 and 30 evaporators have asingle refrigerant circuit and single chilled water circuit, while the CCAQ 40, 52, 60 and 70evaporators have two (2) refrigerant circuits and one (1) chilled water circuit. Evaporator isinsulated with 0.5 inch (12.7 mm) thick closed-cell flexible insulation with a K value of 0.26 and isfurnished with core, inlet and outlet water temperature sensors.

Integral Water Strainer

Evaporator is protected by an integral and easily accessible 20 mesh wye strainer on the water inlet.Strainer screen is removable for service and cleaning.

Refrigerant Circuit

CCAQ 20, 26 and 30 models have a single refrigerant circuit, while the CCAQ 40, 52, 60 and 70models have two (2) refrigerant circuits. Each refrigerant circuit has solenoid valve, sight glass andthermostatic expansion valve. Field installation of liquid line filter driers by others is required.

CGWQ-PRC001B-EN 27


Control Panel

Control panel contains a power distribution section and a controls section which includes thepowerful CCAQ MCS Microprocessor Unit Controller and door mounted controller display.

Power distribution section contains input power and ground lugs for customer connection, across-the-line contactors, non-fused disconnect (optional), current transformers, control powertransformers with primary and secondary fuses, and power monitor (optional).

Controls section contains the CCAQ Unit Controller with standard and optional expansion boards,keyboard and display on exterior of control panel door, service friendly terminal strips to facilitatecircuit diagnosis and separate terminal strip for field connection of“Remote Run/Stop” contact andrequired chilled water flow proving device.

The CCAQ Unit Controller monitors, displays and logs operating and fault conditions, controlsleaving chilled water temperature, and provides safety protection for low and high refrigerantoperating pressure, low refrigerant superheat, low chilled water temperature, low chilled waterflow via customer provided and connected flow proving device, compressor over amperagecondition and abnormal power conditions when fitted with optional power monitor.

Mechanical high and low pressure switches and compressor thermal protection is also provided.

The CCAQ Unit Controller controls the chilled water leaving temperature using proportional,integral, derivative (PID) logic and has RS485 and Ethernet communications ports for userinteractive communication, or for interface with Building Management System (BMS). Controllerhas standard BMS compatibility with BACnet IP and Modbus RTU and can be fitted with an optionalinterface gateway for compatibility with Johnson N2, LonTalk and BACnet MS/TP.The controller iscapable of responding to a BMS signal for “Run/Stop”, “Leaving ChilledWaterTemperature Reset”or“Load Shedding”.“Leaving ChilledWaterTemperature” can also be reset using a 0 to 5VDC inputsignal.

Operator Interface

Exterior of control panel door has a unit controller interface with keypad and 128 X 64 dot pixeldisplay screen. Controller can be accessed using the local keypad and display screen for all unitcontrol set points, faults and alarm conditions with history, and operating conditions in clearlanguage format for easy interpretation by the user / operator. Controller can also be accessed froma remote computer such as a laptop using MCS Connect software and local RS-232 interface portfor all functions plus down loading fault history and reviewing history graphically.The controllerstores 1,008 packets of information that can be graphically present on the remote computer. Datecan be taken for the graphical display based on the time interval that is set.The time interval isfactory set at 15 seconds, but is adjustable. Up to 99 fault conditions are stored in the controller and30 seconds of history is saved any time a fault occurs that results in a compressor lockout.

Discharge Pressure Control Capability

Discharge pressure control must be provided that results in stable Saturated DischargeTemperature (SDT) between 80°F and 128°F through all steady state, part load and transientoperating conditions.

The CCAQ Unit Controller is capable of controlling remote condenser peripheral devices forambient control purposes with a proportional 2 to 10 VDC signal and “on/off” contacts. Someapplications require optional controller expansion boards.

When theTrane CCAQ Compressor Chiller is combined with aTrane CAUJ Air Cooled Condenser,the CCAQ Unit Controller must be used to control condenser fan motors and optional low ambientdampers if applicable. For details, seeTrane Application Guide –Tube Size and ComponentSelection for CCAQ (20-70Ton) and CAUJ (20-80Ton) Split Systems SS-APG013A-EN 16 September2014 or most recent version.

28 CGWQ-PRC001B-EN


Insulation

All cold surfaces are insulated with 0.5 inch (20mm) thick closed-cell flexible insulation with a Kvalue of 0.26.

CGWQ-PRC001B-EN 29

Options

Communications

The powerful unit controller provides complete chiller controls and provides interface to a varietyof platforms including BACnet® IP and Modbus™ as standard.Available LonTalk®, Johnson N2 andBACnet MS/TP requires an optional interface.

• All units come standard Ethernet connection.

• A complete software support package is available at no charge for your PC allowing for systemconfiguration, dynamic on-line display screens, remote communication, graphing and more.

• Controller options allow for use of additional features such as power monitoring, control ofperipherals (fans and pumps) and sensor inputs.

• A standard option available to operate low ambient dampers when a CCAQ model is used withremote condenser having low ambient controls. Using this option can be very effective for lowambient air-cooled starting and operation.

The following factory installed options include controller configuration, allowing the BMS tomonitor chiller operation and fault status, and have on/off, leaving water setpoint and load limitingcontrol of the unit.

• BACnet IP

• Modbus

The following factory installed options include an additional control board and controllerconfiguration allowing the BMS to monitor chiller operation fault status, and have on/off, leavingwater setpoint and load limiting control of the unit

• LonTalk

• Johnson N2

• BACnet MS/TP

Electrical Options

Non-Fused Disconnect

The factory installed non-fused disconnect serves as the 3-phase power input service connectionpoint. Disconnect has a through-the-door handle operator mechanism allowing the service to beengaged and disengaged without opening the control panel door. Handle has lockout/tagout.

Power Monitor

The factory installed power monitor is specifically designed to protect motors and other 3-phaseloads from premature failure and damage due to common voltage faults such as voltageimbalance, over/under voltage, phase loss, reversal, incorrect sequencing and rapid short cycling.

Other Options

Ice Making Controls

In ice making mode, the unit will operate fully loaded in response to a site installed contact closure.Ice making will cease when supply fluid temperature falls below a predetermined adjustable setpoint (in the range of 26°F). When not in ice making mode, unit will provide modulating capacitybased on leaving fluid temperature (20-55°F).

30 CGWQ-PRC001B-EN

Options

Flow Switch

Mandatory flow proving device can be field or factory supplied. Field supplied flow proving deviceshave to be factory approved. Optional ship loose flow switch is available with 1” NPT pipeconnection and NEMA 4 housing.

Water Regulating Valves (CGWQ only)

Factory installed condenser water regulating valve controlled by unit controller is a recommendedoption for all CGWQ chillers. Valves are designed to regulate inlet condenser water to maintainstable compressor discharge pressure during full and part load conditions.

Isolator Pads

This shipped loose option includes four 3/4” thick, 6” square Mason SuperW pads.These pads aredesigned for maximum resilience and vibration isolation.

Sound Attenuation

For applications where quiet operation is required, two levels of factory-installed soundattenuation are available.

• Cabinet -This factory installed option includes compressor compartment cabinetry design forcontrol of compressor noise. Factory painted to match cabinetry. Includes sound absorbinginsulation liner and removable panels for access to compressors and all major components forease of service.

• Blankets -This factory installed option includes insulated sound covers for each compressordesigned to control compressor noise.

Base Rail Forklifting

Channels built into the base frame allow for easy movement using a forklift.

CGWQ-PRC001B-EN 31

Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader increating and sustaining safe, comfortable and energy efficient environments,Trane offers a broad portfolio of advancedcontrols and HVAC systems, comprehensive building services, and parts. For more information, visit www.Trane.com.

Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.

We are committed to using environmentally

conscious print practices that reduce waste.

© 2016Trane All rights reserved

CGWQ-PRC001B-EN 12 Feb 2016

Supersedes CGWQ-PRC001A-EN (12 May 2014)

Documents

CGWQ-PRC001B-EN (02/2016): Product Catalog, Cold · PDF fileCold Generator™ Scroll Liquid Chillers Model CGWQ and CCAQ 20 to 70Tons (60 Hz) Water-Cooled and Compressor Chillers February