Page 2 - Introduction
© 2003 American Standard Inc. All rights reserved CG-PRC007-EN Introduction Air-CooledLiquid Chillers 10, 15 Tons 20–60 Tons Design and manufacturing excellencemakes Trane a leader in the air-cooledchiller marketplace. For over 40 years,Trane has been using the bestengineering available in developme...
Page 3 - Contents; Model Number Description
3 Contents CG-PRC001-EN Introduction Features and Benefits Application Considerations Selection Procedure Model Number Description General Data Performance Data Performance Adjustment Factors Controls Electric Power Dimension and Weights Mechanical Specifications 2 4 9 14 15 16 21 17 30 37 39 48
Page 5 - Flexibility; Optional Features
5 CG-PRC007-EN Features andBenefits The 10 and 15-ton air-cooled ColdGenerator ™ chillers, with Trane direct drive hermetic scroll compressors, hasoutstanding standard features andadditional benefits that make selection,installation, and servicing easy. Flexibility Footprint Central to the design of...
Page 6 - Microprocessor Control
CG-PRC007-EN 6 Features andBenefits (20–60 Ton) Other Standard Features • Trane 3-D Scroll compressors • Advanced motor protection • 300 psi waterside evaporator • Evaporator insulation (¾-inchArmaflex II or equivalent) • Evaporator heat tape (thermostatcontrolled) • Condenser coil guards • Operatio...
Page 7 - Enhanced Controls
7 CG-PRC007-EN Features andBenefits Enhanced Controls IntelliPak Chiller Unit Control Module(UCM) Microprocessor Control The brain of the 20 to 60 ton air-cooledchiller is its Unit Control Module (UCM).The UCM is an innovative, modularmicroprocessor control design, whichcoordinates the actions of th...
Page 8 - Trane 3-D Scroll Compressor; Simple Design with 70% Fewer Parts
CG-PRC007-EN 8 Features andBenefits Trane 3-D Scroll Compressor Simple Design with 70% Fewer Parts Fewer parts than an equal capacityreciprocating compressor meanssignificant reliability and efficiencybenefits. The single orbiting scrolleliminates the need for pistons,connecting rods, wrist pins and...
Page 9 - Setting The Unit
9 CG-PRC007-EN ApplicationConsiderations Certain application constraints should beconsidered when sizing, selecting andinstalling Trane air-cooled chillers. Unitand system reliability is often dependentupon proper and complete compliancewith these considerations. Where theapplication varies from the...
Page 10 - VOLTAGE; Voltage
CG-PRC007-EN 10 ApplicationConsiderations c Provide Lateral Clearance The condenser coil inlet must not beobstructed. A unit installed closer thanthe minimum recommended distance toa wall or other vertical riser mayexperience a combination of coilstarvation and warm air recirculation,resulting in un...
Page 11 - CONTROLS; Temperature Controller; increasing; WATERFLOW LIMITS; Leaving Solution Temperature range; AMBIENT LIMITATIONS; Low Ambient Operation
11 CG-PRC007-EN CONTROLS 1 Temperature Controller In order to provide stable systemoperation and to prevent excessivecompressor cycling, the temperaturecontrol sensor in all 20-60 ton chillers islocated in the supply (outlet) solution.The temperature sensor in all 10 and 15ton chillers is located in...
Page 12 - when the unit is not operating,; is; Supply Water Temperature Drop; MULTIPLE UNIT OPERATION
CG-PRC007-EN 12 point and adequate ethylene glycolconcentration for safe operation. The maximum catalog leaving solutiontemperature from the evaporator is 65°Ffor outdoor ambients up to 115°F. Highleaving water temperatures exceedingthis may result in excessive suctiontemperatures and, therefore, in...
Page 13 - Detail A
13 CG-PRC007-EN ApplicationConsiderations Figure AC-1 — Recommended Piping Components For Typical Evaporator Installation 20–60 Ton 10, 15 Ton Note: Provide shutoff valves in the evaporator inletand outlet to facilitate water temperature sensorremoval. Water Inlet and Outlet locations depend on unit...
Page 14 - SELECTION EXAMPLE
CG-PRC007-EN 14 SelectionProcedure The chiller capacity tables presented inthe “Performance Data” section coverthe most frequently encountered leavingwater temperatures. The tables reflect a10°F temperature drop through theevaporator. For temperature drops otherthan 10°F, fouling factors other than0...
Page 15 - CG A F C40 4 A A A 1 A A A A A 0 0 0 0 0 0 0 0
15 CG-PRC007-EN ModelNumberDescription CGA 120 B 3 00 B A 123 456 7 8 9,10 11 12 DIGIT 10 — Leaving Solution Set point 0 = Standard Expansion Valve 40-60°F Leaving Water(CGA100 & CGA120 models)20-60°F Leaving Solution(CGA150 & CGA180 Models) V = Nonstandard Expansion Valve 20-39°F Leaving So...
Page 16 - General Data; Table GD-1 — General Data — 10–60 Ton Units
CG-PRC007-EN 16 General Data Table GD-1 — General Data — 10–60 Ton Units 10 Ton 15 Ton 20 Ton 25 Ton 30 Ton 40 Ton 50 Ton 60 Ton Model Number CGA120 CGA180 CGAF-C20 CGAF-C25 CGAF-C30 CGAF-C40 CGAF-C50 CGAF-C60 Compressor Data Model Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Quantity 2 2...
Page 30 - Controls; Required Features; ICS Interface Panel; External Trane Devices Required; Tracer; Figure C-2 —Tracer ICS System Interface Schematic
CG-PRC007-EN 30 Controls (Interface withOther ControlSystems) Stand-Alone Unit Interface to stand-alone units is verysimple; only a remote auto-stop or chilledwater flow interlock signal for schedulingis required for unit operation. Signalsfrom the chilled water pump contactorauxiliary or a flow swi...
Page 31 - Motor Overloads
31 CG-PRC007-EN ELECTRICAL CONTROL SYSTEM The controls used on CGA 10 and 15-tonunits are classified either as “safety”controls or “operational” controls. Briefdescriptions of the specific safety andoperating controls used in the CGAcontrol scheme are provided in thefollowing paragraphs. Refer to th...
Page 33 - Scroll compressor. A leaving; Monitoring and Diagnostics
33 CG-PRC007-EN Simple Interface with All ControlSystems The IntelliPak controls afford simpleinterface with Trane Tracer ™ systems, providing broad control capabilities forBuilding Automation systems. For control systems other than Trane, twogeneric building automation systeminterfaces are availabl...
Page 34 - Standard Control Features
CG-PRC007-EN 34 Standard Control Features Human Interface (HI) Panel The Human Interface (HI) Panel providesa 2 line X 40 character clear Englishlanguage liquid crystal display and a 16button keypad for monitoring, setting,editing and controlling. The HumanInterface Panel is mounted in the unit’smai...
Page 35 - Optional Control Features
35 CG-PRC007-EN Head Pressure Control — Condenser head pressure control is provided in theUCM by staging condenser fans on oroff to maintain the saturated condensingtemperature. This function will allowcooling operation down to 30°F asstandard. Minimum on and off timing isbuilt into the algorithm to...
Page 37 - Table ED-1 — Electrical Data; Load Definitions; LOAD3 = Current of electric heaters; lower; higher; standard fuse
37 CG-PRC007-EN Table ED-1 — Electrical Data Unit Wiring Motor Data Model Nameplate Voltage Max Fuse Rec. Dual Compressor (Ea) Fans (Ea) Tons Number Voltage Range MCA Size Element Qty. RLA LRA Qty KW FLA CGA120B1 208-230/60/1 187-254 74 100 2 30.0 169 1 .95 6.0 CGA120B3 208-230/60/3 187-254 38.4 50 ...
Page 38 - Table ED-2 — Electrical Data
CG-PRC007-EN 38 Table ED-2 — Electrical Data Unit Wiring Motor Data Model Nameplate Voltage Max Fuse Rec. Dual Compressor (Ea) Fans (Ea) Tons Number Voltage Range MCA Size Element Qty. RLA LRA Qty KW FLA 10 CGA100BD 380-415/50/3 342-456 24.1 30 — 2 9.5 63 1 0.57 2.7 15 CGA150BD 380-415/50/3 342-456 ...
Page 47 - Weights
47 CG-PRC007-EN Weights Table W-1 — Approximate Corner Weights (lbs) 10-Ton Unit Isolator Loading Tons Model Number 1 2 3 4 Operating Wt. Shipping Wt. 10 CGA 120B 161 164 103 101 529 576 Table W-2 — Approximate Corner Weights (lbs) 15-Ton Unit Isolator Loading Tons Model Number 1 2 3 4 Operating Wt....
Page 52 - Glycol
Trane has a policy of continuous product and product data improvement and reserves the right to changedesign and specifications without notice. Literature Order Number CG-PRC007-EN File Number PL-RF-CG-PRC007-EN-03-2003 Supersedes CG-PRC007-EN-01-2002 Stocking Location Webb/Mason TraneA business of ...