Page 2 - Introduction; What Is New
The new Trane Model RTAC Air-CooledHelical-Rotary Chiller is the result of asearch for higher reliability, higherenergy efficiency, and lower soundlevels for today’s environment. In an effort to reduce energy consumedby HVAC equipment and to continuallyproduce chilled water, Trane hasdeveloped the M...
Page 3 - Contents; Performance Adjustment Factors
3 RLC-PRC005-E4 Contents Introduction Features and Benefits Improved Acoustical PerformanceSimple InstallationSuperior Control with Tracer™ Chiller ControlsOptions Application Considerations Selection Procedure General Data Performance Data Performance Adjustment Factors Controls Generic Building Au...
Page 5 - Precise Rotor Tip Clearances
Improved Acoustical Performance 5 RLC-PRC005-E4 The sound levels of the Series R ModelRTAA have been steadily improvedsince its introduction. With the advent ofthe Model RTAC, sound levels arereduced significantly by addressing twomajor sources: the compressor and therefrigerant piping. First, the c...
Page 6 - Simple Installation; Compact Physical Size
Simple Installation 6 RLC-PRC005-E4 Compact Physical Size The Trane Model RTAC chiller averages a20 percent reduction in physicalfootprint, while the greatest change isactually 40 percent smaller whencompared against the previous design.This improvement makes the RTAC thesmallest air-cooled chiller ...
Page 7 - Chiller Controls; The End of Nuisance; System Options: Ice Storage
Superior Control with Tracer ™ Chiller Controls 7 RLC-PRC005-E4 The End of Nuisance Trip-Outs and Unnecessary Service Calls? The Adaptive Control ™ microprocessor system enhances the air-cooled Series Rchiller by providing the very latest chillercontrol technology. With the AdaptiveControl microproc...
Page 8 - Options
Premium Efficiency andPerformance Option This option provides oversized heatexchangers with two purposes. One, itallows the unit to be more energyefficient. Two, the unit will haveenhanced operation in high-ambientconditions. Low-Temperature Brine The hardware and software on the unitare factory set...
Page 9 - Application Considerations
Application Considerations 9 RLC-PRC005-E4 Certain application constraints shouldbe considered when sizing, selecting,and installing Trane air-cooled Series Rchillers. Unit and system reliability isoften dependent on properly andcompletely complying with theseconsiderations. When the applicationvari...
Page 10 - Leaving-Water Temperature Range
Application Considerations 10 RLC-PRC005-E4 15.6°C 7.6 Lps 21°C 7.6 Lps CV Pump 15°C 5.4 Lps 35°C 5.4 Lps 35°C 7.6 Lps 29.4°C 7.6 Lps 15.6°C 2.2 Lps 35°C 2.2 Lps Figure 5 — GPM Out of Range Leaving-Water Temperature Range Trane air-cooled Series R chillers havethree distinct leaving-water categories...
Page 11 - Variable Flow in the Evaporator
Application Considerations 11 RLC-PRC005-E4 Variable Flow in the Evaporator An attractive chilled-water systemoption may be a variable primary flow(VPF) system. VPF systems presentbuilding owners with several cost-saving benefits that are directly relatedto the pumps. The most obvious costsavings re...
Page 12 - Selection Procedure; Selection Procedure SI Units
Selection Procedure 12 RLC-PRC005-E4 The chiller capacity tables cover themost frequently encountered leaving-liquid temperatures. The tables reflect a6°C [10.8°F] temperature drop throughthe evaporator. For other temperaturedrops, apply the appropriateperformance data adjustment factors.For chilled...
Page 13 - General Data; SI Units
General Data 13 RLC-PRC005-E4 SI Units Table G-1 — RTAC Standard Size 140 155 170 185 200 Compressor Quantity 2 2 2 2 2 Nominal Size (1) tons 70/70 70/85 85/85 85/100 100/100 Evaporator Evaporator Model F140 F155 F170 F185 F200 Water Storage L 132.3 141.3 150.7 156 163.5 Minimum Flow Lps 10.8 11.5 1...
Page 16 - English Units
16 RLC-PRC005-E4 General Data English Units Table G-5 — RTAC Standard Size 140 155 170 185 200 Compressor Quantity 2 2 2 2 2 Nominal Size (1) tons 70/70 70/85 85/85 85/100 100/100 Evaporator Evaporator Model F140 F155 F170 F185 F200 Water Storage gal 35 37.3 39.8 41.2 43.2 Minimum Flow gpm 171.2 182...
Page 19 - Performance Data
19 RLC-PRC005-E4 Performance Data Standard Units (SI Units) Table P-1 — RTAC 140 Entering Condenser Air Temperature (°C) LWT 25 30 35 40 46 50 °C C.C. P.I. COP C.C. P.I. COP C.C. P.I. COP C.C. P.I. COP C.C. P.I. COP C.C. P.I. COP kW kW/kW kW kW kW/kW kW kW kW/kW kW kW kW/kW kW kW kW/kW kW kW kW/kW k...
Page 34 - Flow Lps
34 RLC-PRC005-E4 Performance Adjustment Factors 10 100 10 100 Flow Lps Evp. F140 (RTAC 120/140) Evp. F155 (RTAC 130/155) Evp. F170 (RTAC 140/170) Evp. F185 RTAC (155/185) Evp. F200 (RTAC 170/200) Evp. F220 (RTAC 185HE) Evp. F240 (RTAC 200HE) Legend (RTAC HE/STD) 20 30 40 50 60 70 80 90 20 30 40 50 6...
Page 38 - Controls; Safety Controls; Tracer
38 RLC-PRC005-E4 Controls Safety Controls A centralized microcomputer offers ahigher level of machine protection.Because the safety controls are smarter,they limit compressor operation in orderto avoid compressor or evaporatorfailures, thereby minimizing nuisanceshutdowns. Tracer ™ Chiller Controls ...
Page 39 - Typical Wiring Diagram
39 RLC-PRC005-E4 Typical Wiring Diagram Figure 9 — Compressor wiring diagram and control supply RTAC 120-200 Figure 10 — Control diagram
Page 42 - Legend
42 RLC-PRC005-E4 Notes1 Refer to Power Wiring Diagram 2 Refer to Control Wiring Diagram 3 Refer to Fans Power WiringDiagram 4 Remove the Jumper Wire WhenUsing the Remote Contact 5 Not Supplied with Night NoiseSetback (Option 19) 6 Supplied When PED Approval 7 Factory Connected 10 Valid for RTAC 155-...
Page 44 - Job Site Data; Job Site Connections
44 RLC-PRC005-E4 Job Site Data Job Site Connections Table J-1 — Customer Wire Selection Unit without Disconnect Switch Unit with Disconnect Switch Voltage 400/3/50 Wire Selection Size Wire Selection Size to Main Terminal Block to Disconnect Switch Unit Minimum cable Maximum cable Disconnect Switch M...
Page 45 - Electrical Data
45 RLC-PRC005-E4 Electrical Data Table E-1 — Electrical Data 400/3/50 Unit Wiring Unit Number of Power Maximum Starting Power Disconnect Compressor Size Connections Amps (1) Amps (2) Factor Switch Size Fuse Size (A) Standard 140 1 398 469 0.88 6x250 + 3x125 250/250 155 1 437 494 0.88 6x400 + 3x125 3...
Page 47 - Dimensional Data
47 RLC-PRC005-E4 Dimensional Data 140-155-170 STD120-130-140 HE Figure 16
Page 50 - Mechanical Specifications
50 RLC-PRC005-E4 Mechanical Specifications GeneralUnits are leak- and pressure-tested at24.5 bars [350 psi] high side and 14 bars[200 psi] low side, and then evacuatedand charged. Packaged units ship with afull operating charge of oil andrefrigerant. Unit panels, structuralelements, and control boxe...