Product Catalog Stealth™ Air-Cooled Chillers Model RTAE 150 to 300 Nominal Tons October 2014 RLC-PRC042D-EN
Introduction Overview of Design The Stealth™ air-cooled chiller was designed to meet the demanding requirements of today's environment. The design transforms technology into performance on which you can depend. Trane engineers brought innovation to every component in the next-generation Trane® Stealth chiller. The result: the highest efficiency, improved system flexibility and performance, and the lowest published sound levels—all while delivering improved reliability and lower maintenance requirements.
Introduction Copyright This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in part without written permission. Trane reserves the right to revise this publication at any time, and to make changes to its content without obligation to notify any person of such revision or change. Trademarks All trademarks referenced in this document are the trademarks of their respective owners. Revision History RLC-PRC042D-EN (07 Oct 2014).
Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Application Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 General Data . . . . . . . . . .
Features and Benefits Technology • AdaptiSpeed™ technology assures optimal performance at all operating conditions • Permanent magnet motor - up to 4% more efficient than an induction motor • AFD3 Adaptive Frequency™ Drive • Soft start provided as standard to reduce power in-rush at start-up • One of the first true 24 pulse drive systems in the industry • Compressor design optimized for variable speed operation • Rotor profile designed for maximum efficiency at higher speeds • Shuttle valve enhances comp
Features and Benefits Reliability • Robust drive design using film capacitors for longer drive life • Industrial bearing system designed for the life of the chiller • Shuttle valve reduces the differential oil pressure required for cold weather start-up • New header design eliminates brazed coil u-bends, significantly reduces potential for refrigerant leaks • All aluminum alloy coils reduce potential for corrosion • Enhanced factory-applied corrosion protection available • Rapid Restart capabi
Application Considerations Certain application constraints should be considered when sizing, selecting and installing Trane RTAE chillers. Unit and system reliability is often dependent upon proper and complete compliance with these considerations. Where the application varies from the guidelines presented, it should be reviewed with your local Trane account manager. Note: The terms water and solution are used interchangeably in the following paragraphs.
Application Considerations Flow Rates Out of Range Many process cooling jobs require flow rates that cannot be met with the minimum and maximum published values within the RTAE evaporator. A simple piping change can alleviate this problem. For example: a plastic injection molding process requires 80 gpm (5.0 l/s) of 50°F (10°C) water and returns that water at 60°F (15.6°C). The selected chiller can operate at these temperatures, but has a minimum flow rate of 106 gpm (6.6 l/s).
Application Considerations Figure 2. Temperature out of range system solution 59°F (15°C) 60 gpm (3.8 l/s) 59°F(15°C) 238 gpm (15 l/s) 68°F (20°C) 238 gpm (15 l/s) 80°F (30°C) 238 gpm (15 l/s) PUMP 95°F (35°C) 178 gpm (11.2 l/s) LOAD 59°F (15°C) 178 gpm (11.2 l/s) PUMP 95°F (35°C) 60 gpm (3.8 l/s) 95°F (35°C) 238 gpm (15 l/s) Variable Flow in the Evaporator An attractive chilled water system option may be a variable primary flow (VPF) system.
Application Considerations setpoint. Chiller 1 will finish cooling the leaving water from Chiller 2 down to the system design setpoint. Staggering the chiller set points is another control technique that works well for preferentially loading Chiller 1. If the cooling load is less than 50 percent of the system capacity, Chiller 1 would be able to satisfy the entire call for cooling. As system loads increase, Chiller 2 is started to meet any portion of the load that Chiller 1 can not meet. Figure 3.
Application Considerations • Larger system supply and return header piping (which also reduces system pressure drop and pump energy use). Minimum water volume for a process application If a chiller is attached to an on/off load such as a process load, it may be difficult for the controller to respond quickly enough to the very rapid change in return solution temperature if the system has only the minimum water volume recommended.
Application Considerations therefore, are recommended for sound sensitive installations. An acoustical engineer should always be consulted on critical applications. Figure 4. Installation example Piping isolation Chilled water piping should be supported Isolators Isolators Concrete Base Flexible electrical conduit For maximum isolation effect, water lines and electrical conduit should also be isolated.
Application Considerations Cross winds, those perpendicular to the condenser, tend to aid efficient operation in warmer ambient conditions. However, they tend to be detrimental to operation in lower ambients due to the accompanying loss of adequate head pressure. Special consideration should be given to low ambient units. As a result, it is advisable to protect air-cooled chillers from continuous direct winds exceeding 10 mph (4.5 m/s) in low ambient conditions.
Model Number Description Digits 1,2 — Unit Model Digit 16 — Evaporator Application Digit 26 — Power Line Connection Type Digits 3— Unit Type F = A G = A C D C = RT = = Rotary Chiller Air-cooled Digits 4 — Development Sequence E = Development Sequence Digits 5-7 — Nominal Capacity 149 = 164 = 150 = 165 = 180 = 200 = 225 = 250 = 275 = 300 = 150 Nominal Tons Single Circuit 165 Nominal Tons Single Circuit 150 Nominal Tons 165 Nominal Tons 180 Nominal Tons 200 Nominal Tons 225 Nominal Tons 250
Model Number Description Digit 34 — Structural Options A B = = C = D = E F = = Standard Unit Structure Seismic to International Building Code (IBC) California Office of Statewide Health Planning and Development (OSHPD) Certification Wind Load for Florida Hurricane 175 MPH Seismic (IBC) and Wind Load OSHPD and Wind Load Digit 35 — Appearance Options 0 A = = No Appearance Options Architectural Louvered Panels Digit 36 — Unit Isolation 0 1 3 = = = No Isolation Elastomeric Isolators Seismic Rated
General Data Table 1. General data table Unit Size (tons) 150 165 180 200 225 250 275 300 150SC 165SC CHHSR CHHSR CHHSR CHHSR CHHSS CHHSS CHHSS CHHSS CHHSS CHHSS # 2 2 2 2 2 2 2 2 1 1 (gal) 17.5 18.7 21.9 23.9 26.6 28.7 33.0 36.0 17.3 17.3 (L) 66.1 70.9 82.8 90.5 100.6 108.8 125.0 136.1 65.6 65.
General Data Table 2. Drive cooling Unit Size (tons) Extended Length Units(a) Standard Length Unit 150S - 165S 150 165-250 Drive Cooling Fluid Type 275-300 150S - 165S 150 165-250 275-300 Trane Heat Transfer Fluid CHM01023 Fluid Volume (gal) Ckt 1 1.28 1.14 1.23 1.32 1.37 1.30 1.32 1.41 Ckt2 n/a 1.32 1.67 1.81 n/a 1.67 1.81 1.95 Total 1.28 2.46 2.89 3.12 1.37 2.97 3.12 3.36 Ckt1 4.86 4.30 4.64 4.98 5.20 4.93 4.98 5.33 Ckt2 n/a 5.01 6.31 6.84 n/a 6.
Controls Tracer UC800 Controller Today’s Stealth™ chillers offer predictive controls that anticipate and compensate for load changes. Other control strategies made possible with the Tracer UC800 controls are: Feedforward Adaptive Control Feedforward is an open-loop, predictive control strategy designed to anticipate and compensate for load changes. It uses evaporator entering-water temperature as an indication of load change.
Controls Tracer AdaptiView TD7 Operator Interface The standard Tracer AdaptiView™ TD7 display provided with the Trane UC800 controller features a 7” LCD touch-screen, allowing access to all operational inputs and outputs. This is an advanced interface that allows the user to access any important information concerning setpoints, active temperatures, modes, electrical data, pressure, and diagnostics. It uses full text display available in 26 languages.
Controls Tracer TU Interface Tracer™ TU (non-Trane personnel, contact your local Trane office for software) adds a level of sophistication that improves service technician effectiveness and minimizes chiller downtime. The Tracer AdaptiView™ control’s operator interface is intended to serve only typical daily tasks. The portable PC-based service-tool software, Tracer TU, supports service and maintenance tasks.
Controls System Integration Stand-Alone Controls Single chillers installed in applications without a building management system are simple to install and control: only a remote auto/stop for scheduling is required for unit operation. Signals from the chilled-water pump contactor auxiliary, or a flow switch, are wired to the chilled-water flow interlock. Signals from a time clock or some other remote device are wired to the external auto/stop input.
Controls Tracer SC The Tracer SC ™system controller acts as the central coordinator for all individual equipment devices on a Tracer building automation system. The Tracer SC scans all unit controllers to update information and coordinate building control, including building subsystems such as VAV and chiller water systems. With this system option, the full breadth of Trane’s HVAC and controls experience are applied to offer solutions to many facility issues.
Controls A remote terminal is a PC workstation equipped with a modem and software to display the remote plant parameters. Integrated Comfort System (ICS) The onboard Tracer chiller controller is designed to be able to communicate with a wide range of building automation systems. In order to take full advantage of chiller’s capabilities, incorporate your chiller into a Tracer SC building automation system. But the benefits do not stop at the chiller plant.
Electrical Electrical Data Table 3. Electrical data — 60 Hz — all ambients AFD Input Amps(a) Unit Size 150S 165S 150 165 180 200 24 Rated Voltage(c) Comp A Comp B Qty(d) Fans Control VA(b) kW FLA Without With Harmonic Filtration Harmonic Filtration (model # digit 29 =X) (model # digit 29 =1) MCA(e) MOP(f) 200/60/3 221 - 8 2.05 2.7 1074 - 693 1000 230/60/3 221 - 8 2.05 2.7 1074 - 603 1000 380/60/3 268 - 8 2.05 3.3 574 - 365 600 400/60/3 254 - 8 2.05 3.
Electrical Table 3. Electrical data — 60 Hz — all ambients (continued) AFD Input Amps(a) Unit Size 225 250 275 300 Rated Voltage(c) Comp A Comp B Qty(d) Fans Control VA(b) kW FLA Without With Harmonic Filtration Harmonic Filtration (model # digit 29 =X) (model # digit 29 =1) MCA(e) MOP(f) 200/60/3 160 160 12 2.05 2.7 1434 - 933 1200 230/60/3 160 160 12 2.05 2.7 1434 - 792 1000 380/60/3 194 194 12 2.05 3.3 934 1434 480 600 400/60/3 184 184 12 2.05 3.
Electrical Table 4. Electrical data — 50 Hz — all ambients Fans Control VA(a) Qty(c) kW FLA Without With Harmonic Filtration Harmonic Filtration (model # digit 29 =X) (model # digit 29 =1) 8 2.05 3.3 AFD Input Amps Unit Size 150S 165S 150 165 180 200 225 250 275 300 Rated Voltage(b) Comp A Comp B 380/50/3 268 - 574 - MCA(d) MOP(e) 365 600 400/50/3 254 - 8 2.05 3.1 574 - 347 500 380/50/3 285 - 10 2.05 3.3 574 - 393 600 400/50/3 270 - 10 2.05 3.
Electrical Customer Wiring Table 5.
Electrical Table 5.
Electrical Table 6.
Electrical Connections Figure 5.
Electrical Connections Figure 6. Single circuit units — field wiring sheet 1 (continued) DRAWN BY: N.
Electrical Connections Figure 7.
Electrical Connections Figure 8. Single circuit units — field wiring sheet 2 (continued) DRAWN BY: N. SCHAMS C TRANE DATE: 24-JULY-2014 R MASTER FILE: REVISION DATE: REPLACES: 23111966 THIS DRAWING IS PROPRIETARY AND SHALL NOT BE COPIED OR ITS CONTENTS DISCLOSED TO OUTSIDE PARTIES WITHOUT THE WRITTEN CONSENT OF TRANE SIMILAR TO: USED BY: REV SHEET 2 FIELD WIRING DIAGRAM RTAE B 1 CAD: CREO SCHEMATICS GENERAL NOTES 1.
Electrical Connections Figure 9.
Electrical Connections Figure 10. / g/ Dual circuit units — field wiring sheet 1 (continued) DRAWN BY: N.
Electrical Connections Figure 11.
Electrical Connections Figure 12. Dual circuit units — field wiring sheet 2 (continued) ED 07/Aug/2014 / g/ 12:20:31 GMT DRAWN BY: N. SCHAMS C TRANE DATE: 11-APR-2014 R MASTER FILE: REVISION DATE: REPLACES: 23111961 THIS DRAWING IS PROPRIETARY AND SHALL NOT BE COPIED OR ITS CONTENTS DISCLOSED TO OUTSIDE PARTIES WITHOUT THE WRITTEN CONSENT OF TRANE SIMILAR TO: USED BY: REV SHEET 2 FIELD WIRING DIAGRAM RTAE B 1 CAD: CREO SCHEMATICS GENERAL NOTES 1.
Dimensions and Weights Unit Length Units are EXTENDED length if either of the following are selected: • Transformer: Model number digit 28 = 1 • Harmonic Filtration Option: Model number digit 29 = 1 Units without Harmonic Filtration Option orTransformer (digits 28, 29 = 0X) are STANDARD length. Weights Table 7.
Dimensions and Weights Service Clearance Figure 13. RTAE service clearances NO OBSTRUCTIONS ABOVE UNIT Control Panel 85” (2160mm) See note 2 40” (1016 mm) 24” (600.1mm) See note 1 NOTES: 1. A full 40” clearance is required in front of the control panel. Must be measured from front of panel, not end of unit base. 2. Clearance of 85” on the side of the unit is required for coil replacement.
Dimensions and Weights Dimensions Standard Length Units • See “Unit Length,” p. 38 to determine unit length. See “Extended Length Unit Dimensions,” p. 47 for right side dimensions of extended length units. • See “3-Pass Evaporator Dimensions,” p. 53 for 3-pass option changes. Figure 14.
Dimensions and Weights Figure 15.
Dimensions and Weights Figure 16.
Dimensions and Weights Figure 17.
Dimensions and Weights Figure 18.
Dimensions and Weights Figure 19.
Dimensions and Weights Figure 20.
Dimensions and Weights Extended Length Unit Dimensions Note: Top and end view dimensions are the same as the standard length units. See “Standard Length Units,” p. 40 for these dimensions. Figure 21. 150 ton single circuit with transformer option (200, 230 or 575V) — right side view Figure 22.
Dimensions and Weights Figure 23. 150 ton with harmonic filtration option — right side view Figure 24.
Dimensions and Weights Figure 25. 165 - 180 ton with harmonic filtration option — right side view Figure 26.
Dimensions and Weights Figure 27. 200 - 250 ton with harmonic filtration option — right side view Figure 28.
Dimensions and Weights Figure 29. 275 ton with harmonic filtration option — right side view Figure 30.
Dimensions and Weights Figure 31. 300 ton with harmonic filtration option — right side view Figure 32.
Dimensions and Weights 3-Pass Evaporator Dimensions Figure 33. 3 pass evaporator(a) — single circuit units (a) See Table 8 for corresponding dimension values. Figure 34. 3 pass evaporator(a) — dual circuit units (a) See Table 8 for corresponding dimension values. Table 8. 3-pass evaporator dimensions(a) Unit size (tons) Dim 150S 165S 150, 165 180 200 225, 250 275 300 in mm in mm in mm in mm in mm in mm in mm in mm A 15.0625 1348 106.3125 200 53.25 1353 51.
Mechanical Specifications General Units are leak and pressure tested at 390 psig high side, 250 psig low side, then evacuated and charged. All Stealth™ RTAE Chillers are factory tested prior to shipment. Packaged units ship with a full operating charge of oil and refrigerant as standard. Units can also be shipped with a nitrogen charge if required. Unit panels, structural elements and control boxes are constructed of galvanized steel and mounted on a bolted galvanized steel base.
Mechanical Specifications motor is a suction gas cooled, hermetically sealed, permanent magnet motor. An oil separator is provided separate from the compressor. Oil filtration is provided internal to the compressor. Drive Cooling System Each refrigeration circuit has a compressor drive cooling circuit.
Mechanical Specifications The Tracer ™UC800 unit control module, utilizing Adaptive Control™ microprocessor, automatically takes action to avoid unit shut-down due to abnormal operating conditions associated with low refrigerant pressure, high condensing pressure, AFD/Compressor current overload, low oil return or low AFD cooling, low discharge superheat, and high compressor discharge temperature.
Options Applications Options Ice Making The ice making option provides special control logic to handle low temperature brine applications (less than 40°F [4.4°C] leaving evaporator temperature) for thermal storage applications. Low Temperature Brine The low temperature option provides special control logic to handle low temperature brine applications (less than 40°F [4.4°C] leaving evaporator temperature) including part load conditions.
Options ModBus Communications Interface Allows easily interface with ModBus™ via a single twisted pair wiring to a factory installed and tested communication board. Remote Input Options Option permits remote chilled liquid setpoint, remote demand limit setpoint, or both by accepting a 4-20 mA or 2-10 Vdc analog signal. Remote Output Options Permits alarm relay outputs, ice making outputs, or both.
Options Elastomeric Isolators Isolators provide isolation between chiller and structure to help eliminate vibration transmission. Neoprene isolators are more effective and recommended over spring isolators and are required with the very low noise InvisiSound option. Isopads - Seismically Rated Isopads are designed and tested to control the motion of the chiller during a seismic event.
Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in creating and sustaining safe, comfortable and energy efficient environments, Trane offers a broad portfolio of advanced controls 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.
