Air-Cooled Series R Rotary Liquid Chiller

1 Air-Cooled Series R . Rotary Liquid Chiller Model RTAA. 70 to 125 Tons Built for Industrial and Commercial Markets November 2006 RLC-PRC016-EN. Features and Benefits You Designed by Customers . Like its chillers,Trane wants its Trane's RTAA 70-125 was designed with relationships with customers to last. the end user's requirements in mind. Trane is interested in maintaining long Reliability, efficiency, sound, and physical term, loyal relationships. This perspective size were primary design concerns in means the point in time that a customer expanding the RTAA product line down to purchases a Chiller is the beginning of a 70 result is a reliable Chiller that relationship, not the end. Your business is will help you achieve your bottom line important, but your satisfaction is goals. paramount. 2 2002 American Standard Inc. All rights reserved. RLC-PRC016-EN. Contents Features and Benefits 2. Controls 12. Application Considerations 18.

2 Model Number Description 22. General Data 23. Selection Procedure 24. Performance Adjustment Factors 25. Performance Data 27. Electrical Data 32. Dimensional Data 38. Weights 42. Options 45. Mechanical Specifications 46. The standard ARI rating condition (54/44 F and 95 F) and IPLV are ARI. certified. All other ratings, including the following, are outside the scope of the certification program and are excluded: Glycol. 50 Hz. Remote evaporator models. RLC-PRC016-EN 3. Features and Benefits Designed To Perform, Built To Last RTAA 70-125 Chiller Highlights Performance Years of research, testing, and High efficiency with all units complying successful helical with the ASHRAE efficiency Rotary compressor has amassed standard. thousands of hours of testing, much of it Excellent part load performance is at severe operating conditions. Not to achieved without resorting to mention, the successful application of manifolded multiple reciprocating or RTAA chillers since 1994, with a scroll compressors.

3 Developed reputation as the industry Use of an electronic expansion valve standard. significantly improves part load Trouble free startup through factory performance by minimizing superheat testing of compressor and completed in the evaporator and allowing the Chiller and factory installation of Chiller Chiller to run at reduced condensing accessories. temperatures. High compressor reliability and Unique compressor sequencing Adaptive Control to keep the Chiller on equalizes not only starts, but operating line producing cold water during hours as well. adverse conditions. Small footprint, with Trouble-Free Operation and Start-Up smallest required application space With Adaptive Controls, there are fewer (operating footprint) in the industry. nuisance trips meaning less expense Small footprint, with smallest required from unnecessary service calls. application space (operating footprint) in Factory installed and tested options the industry.

4 Keep start-up time and expenses Low sound levels and accessory minimized. options for sound sensitive applications. Easy interface capability with the Trane F leaving water temperature Integrated Comfort system via a control ( C), resulting from PID feed- single twisted pair of wires. forward controls, and linear load Enhanced interface capability with matching, also allowing for 10% flow LonTalk compatible building automation rate change per minute while systems with our expanded list LonTalk maintaining F leaving water control points. temperature control. Optional remote display panel simplifies Reliability Chiller monitoring/ control. Proven Trane helical Rotary screw Packed stock availability for your quick compressor design for longer life and replacement needs. greater dependability. Adaptive Control protects the Chiller when any of the system variables approaches a limit condition that may damage the unit or cause a shutdown.

5 The Unit Control Module takes corrective action to keep the unit running. Dual circuit design increases overall system reliability. Unlike reciprocating designs, this compressor can handle Liquid slugging. 4 RLC-PRC016-EN. Features and Benefits Series R Compressor Highlights Precise Rotor Tip Clearances Exceptional Part Load Performance Direct-drive, low speed for high Higher energy efficiency in a helical Rotary The Air-Cooled Series R Chiller has great efficiency and reliability. compressor is obtained by reducing the part-load patented Simple design with only four moving rotor tip reduces the combination unloading system on the parts, resulting in high reliability and low leakage between high and low pressure compressor utilizes the variable maintenance. cavities during compression. Precise rotor unloading valve for the majority of the Field serviceable compressor for easy tip clearance is achieved with the latest unloading function similar to that of the maintenance.

6 Manufacturing and machining technology. slide compressor also uses a Precise rotor tip clearance for optimal Trane was the first helical Rotary step unloader valve which is a single efficiency. compressor manufacturer to unloading step to achieve the minimum Suction gas- cooled motor, resulting in electronically check compressor parts unloading point of the lower operating temperatures for machining accuracy as part of the result of both of these designs is increased motor life, and giving the standard production process. optimized part-load performance far capability for: Optimized Compressor Parts Profiles superior to single reciprocating or scroll Five-minute start-to-start/two minute Rotor and slide valves are unique designs, compressors. stop-to-start capability, which allows for optimized for the air conditioning Advanced Heat Transfer Surfaces closer water loop temperature control. rotors are designed for Condenser and evaporator tubes use the Robust Parts the pressure ranges in the air conditioning latest heat transfer technology for Helical Rotary compressors are precisely unloader valve has a increased efficiency.

7 Machined using state of the art processes unique profile that resulted from from solid metal bar stock. Tolerances are computer performance modeling in maintained within 10 micron or less than typical part-load situations. a tenth of the diameter of a human hair. The resulting compressor is a robust yet highly sophisticated assembly capable of ingesting Liquid refrigerant without risk of damage. Contrast this to a reciprocating compressor, which can be destroyed by a single slug of Liquid . Cutaway of a helical Rotary screw compressor RLC-PRC016-EN 5. Features and Benefits Efficiency The RTAA 70-125 offers the same high reliability of its larger predecessor coupled with lowered sound levels, increased energy efficiency, and reduced physical footprint, all due to its advanced design, low speed/direct drive compressor and proven Series R . performance. Some of the major advantages of the Model RTAA 70-125 vs its larger predecessor are: Higher energy efficiency Lower sound levels Smaller physical footprint The Series R Model RTAA 70-125 is an industrial grade design built for both the industrial and commercial markets.

8 It is ideal for schools, hospitals, retailers, office buildings, Internet service providers and industrials. ASHRAE Standard and RTAA 70- 125 World Class Energy Efficiency . The importance of energy efficiency cannot be understated. Fortunately, Efficiencies given for 60 Hz units. ASHRAE has created a guideline emphasizing its importance. Nonetheless, energy is often dismissed as an operational cost over which the owner has little control. That perception results in missed opportunities for energy efficiency, reduced utility bills, and higher profits. Lower utility bills directly affect profitability. Every dollar saved in energy goes directly to the bottom 's RTAA 70-125 is one way to maximize requires even higher efficiencies. Risk. The US Federal Government has your profits. Federal Executive Order mandates adopted ASHRAE , and it's expected ASHRAE Standard & Executive energy consuming devices procured to be adopted domestically, if not globally, Order - New technology applied to the must be in the top 25% of their class or be in the future.

9 Domestic acceptance has design, controls, and manufacturing have at least 10% better than any product already begun. Make sure that your created superior efficiency levels in the standard for that product. In the case of chillers as well as your entire HVAC. RTAA 70-125 that are unmatched in the chillers, that product standard is ASHRAE system complies, or you may be caught industry. AllTrane Air-Cooled chillers meet Trane's RTAA 70-125 meets or retrofitting your project with new the new efficiency levels mandated by exceeds the efficiency requirements of equipment and paying extra design ASHRAE Standard This new , with some units meeting the dollars if the code is adopted during standard requires higher efficiencies than stretch goals of Executive Order. construction. past technologies can US. Federal Government has adopted standard and, in some cases, 6 RLC-PRC016-EN. Features and Benefits Installation Trouble-Free Start-Up Quick Installation Close Spacing Of Chiller All Air-Cooled Series R chillers are given All Series R Chiller options, including The Air-Cooled Series R Chiller has the a complete functional test at the factory.

10 Control power transformer, starter tightest recommended side clearance in This computer-based test program disconnect, low ambient control, ambient the industry, four feet, but that is not all. In completely checks the sensors, wiring, temperature sensor, low ambient lockout, situations where equipment must be electrical components, microprocessor communication interface and ice making installed with less clearance than function, communication capability, controls are factory installed and tested. recommended, which frequently occurs expansion valve performance and fans. Some manufacturers send options in in retrofit and rooftop applications, In addition, each compressor is run tested pieces to be field installed. WithTrane, the restricted air flow is common. to verify capacity and power customer saves on installation expense Conventional chillers may not work at all. end result of this test and has assurance that ALL Chiller However, the Air-Cooled Series R Chiller program is that the Chiller arrives at the controls/options have been tested and with Adaptive Control microprocessor jobsite fully tested and ready to go to will function as expected.