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CenT raV ac ™ Liquid Chillers Centrifugal Liquid Chillers/ W ater -Cooled 170-3500 T ons 50 and 60 Hz Built For the Industrial and Commercial Markets CTV -PRC007-EN April 2001 CVHE — Three Stage C.
CTV -PRC007-EN ©American Standard Inc. 2001 What We Mean By Earth • Wise Breaking the .48 kW/T on Efficiency Barrier The T rane Earth • Wise CenT raV ac has a proven track record as literally the world’ s most efficient, lowest emissions chiller .
3 CTV -PRC007-EN Contents Introduction Features and Benefits Components, Standard and Optional Features, Factory Performance T esting, Refrigeration Cycle, Control Panel Unit Options Unit Mounted Star.
CTV -PRC007-EN 4 Introduction The first T rane centrifugal chiller , the T urbovac ™ was introduced in 1938. The simple, direct drive, slow speed design of the T urbovac revolutionized the air conditioning industry . The chiller was attractive to customers because its hermetic design reduced frequent service requirements.
5 CTV -PRC007-EN Introduction Specific T rane centrifugal chiller performance is certified by ARI Standard 550/590. T rane centrifugal chillers tested within the scope of the ARI program display the ARI symbol of compliance (shown on back cover) to certification sections of ARI Standard 550/590.
CTV -PRC007-EN 6 Comparing the Attributes of Low Pressure Chiller Operation to High Pressure Chiller Operation. T rane CenT raV ac chillers continue to offer time tested and proven low pressure refrigerants including the alternative environment friendly HCFC- 123.
7 CTV -PRC007-EN Operator Control Panel T rane has multi-language support for all chillers controlled by the UCP2 ™ including but limited to: CVHE, CVHF , CVHG, GPC and LHCV alarm. The standard Clear Language Display (CLD) supports eight languages including English, French, German, Spanish, Katakana, Italian, Portuguese and Dutch.
CTV -PRC007-EN 8 Internally enhanced or smooth bore tubes V arious tube materials and thicknesses Controls and paints for outdoor use or corrosive environments Marine or standard waterboxes 1, 2, 3, p.
9 CTV -PRC007-EN Standard Features The following features are provided as standard with all T rane CenT raV ac ™ chillers: • Motor -compressor assembly with integral lubrication system. • Evaporator condenser assembly . • T wo-stage economizer assembly on CVHE/CVHG style units (single-stage on CVHF style units).
CTV -PRC007-EN 10 Factory T esting for Assured Performance T o prove that your chiller will perform as promised, T rane offers factory performance testing, which you can witness. T rane provides laboratory-grade, calibrated performance testing on ARI approved test loops that proves the performance of the chiller tailored to your application.
11 CTV -PRC007-EN Design Simplicity Impellers are keyed directly to the motor shaft for high reliability and performance and low life-cycle costs. Reliable Motor Cooling The motor is engulfed in liquid refrigerant to provide efficient, complete cooling at all load conditions.
CTV -PRC007-EN 12 CenT raV ac ™ Three-Stage P-H Diagram The pressure-enthalphy (P-H) diagram describes refrigerant flow through the major CVHE/CVHG chiller components. This diagram confirms the superior operating cycle efficiency of the three- stage compressor and two-stage economizer .
13 CTV -PRC007-EN Unit Options Unit-Mounted Starters T rane factory installed options make installation of a CenT raV ac ™ chiller easier , faster and less costly .
CTV -PRC007-EN 14 Figure O-2 – T ypical Equipment Room Layout – Unit-Mounted Star-Delta Starter Figure O-1 – T ypical Equipment Room Layout – Conventional Remote Star -Delta Starter • System Design T ime Cost Savings System design time is reduced, since all starter components and interconnecting wiring are pre- engineered and selected.
15 CTV -PRC007-EN The solid-state starter controls the starting characteristics of a motor by controlling the current that flow to the motor . It does so through the use of SCRs (Silicon Controlled Rectifiers), which are solid-state switching devices, and an integral bypass contactor for power control.
CTV -PRC007-EN 16 Unit Options Adaptive Frequency Drives Figure O-4 — CVHE500 Part Load Efficiencies with/without AFD Benefits T rane Adaptive Frequency drives* provide motor control, but they are much more than just starters.
17 CTV -PRC007-EN Condenser water temperature relief of chilled water reset Compressor lift reduction is required for a chiller application, both to provide stable chiller operation at part-loads and to achieve greater energy savings.
CTV -PRC007-EN 18 Benefits The T rane patented free cooling accessory for T rane CenT raV ac ™ chillers adapts the basic chiller so it may function as a simple heat exchanger using refrigerant as the working fluid.
19 CTV -PRC007-EN Free Cooling Unit Options T emperature and humidity control requirements are important considerations when evaluating the use of CenT raV ac free cooling. Low temperature outside air (from the outside air economizer) often requires a large amount of energy for humidification purposes.
CTV -PRC007-EN 20 System Options Auxiliary Condenser Auxiliary Condenser The T rane auxiliary condenser provides economical heat recovery for applications with small heating demand. It ’ s well-suited to preheat applications including domestic hot water , boiler makeup water and swimming pools.
21 CTV -PRC007-EN System Options Auxiliary Condenser (Cont.) Controls The auxiliary condenser was designed for simplicity of operation. Machine load, water flow rate, and temperature determine the amount of heat recovered.
CTV -PRC007-EN 22 Ice Storage Provides Reduced Electrical Demand Ice storage is the hottest thing in cooling today . It has been accepted by building owners and tenants who are concerned about utility costs. An ice storage system uses a standard chiller to make ice at night when utilities charge less for electricity .
23 CTV -PRC007-EN Heat Recovery System Options Heat Recovery Use of the Heat Recovery CenT raV ac ™ can significantly reduce the energy operating costs of many buildings by using heat which normally would be rejected to the atmosphere.
CTV -PRC007-EN 24 Simultaneous Heating and Cooling The T rane Heat Recovery CenT raV ac ™ chiller is an excellent choice for applications requiring simultaneous heating and cooling.
25 CTV -PRC007-EN System Options Chilled W ater Reset Chilled W ater Reset — Chilled water reset is often a practical means of reducing energy consumption during periods of the year when heating loads are high but cooling loads are reduced. Resetting the chilled water temperature increases the evaporator refrigerant pressure.
CTV -PRC007-EN 26 For Applications Requiring 1300-3500 T ons (60 Hz), Choose LHCV • The LHCV chiller system is the modern solution for large central plant applications. It offers significant first cost and operating cost advantages compared to field-assembled very large chillers.
27 CTV -PRC007-EN Condenser Water Limitations T rane CenT raV ac ™ chillers start and operate over a range of load conditions with controlled water temperatures. Reducing the condenser water temperature is an effective method of lowering the chiller power input.
CTV -PRC007-EN 28 Selection The CenT raV ac ™ centrifugal chiller product line provides more than 200,000 individual unit selections over a capacity range of 170 through 3500 tons. Chiller selections and performance data can be obtained through the use of the CenT raV ac chiller selection program available in local T rane sales offices.
29 CTV -PRC007-EN Roughing-in Dimensions The dimensional drawings illustrate overall measurements of the chiller . The recommended space envelope indicates clearances required to easily service the CenT raV ac chiller . A view of the unit is superimposed on this drawing with unit support feet shown.
CTV -PRC007-EN 30 Minimum/Maximum Evaporator Flow Rates (GPM) Shell Bundle One Pass T wo Pass Three Pass Size Size SBCU TECU IECU SBCU TECU IECU SBCU TECU IECU EVSZ EVBS Min / Max Min / Max Min / Max .
31 CTV -PRC007-EN Performance Data Minimum/Maximum Condenser Flow Rates (GPM) Shell Bundle T wo Pass Size Size SBCU TECU IECU CDSZ CDBS Min / Max Min / Max Min / Max 032S 230 214 / 784 209 / 767 218 /.
CTV -PRC007-EN 32 Figure J-1 — Electric Connections Shipment and Assembly All style hermetic CenT raV ac ™ units ship as a factory assembled, factory tested package, ready to rig into place on factory supplied isolation pads.
33 CTV -PRC007-EN Controls Advanced Controls T rane set the standard for unit microprocessor controls in 1985 with the first generation Unit control panel.
CTV -PRC007-EN 34 Controls Building Automation and Chiller Plant Control For building automation and control of chilled water plants, T rane has developed the T racer Summit ™ . It can control the operation of the complete installation: chillers, pumps, cooling towers, isolating valves, air handlers and terminal units.
35 CTV -PRC007-EN Controls Optimal Performance Regardless of the system level being designed, the unit controls become critical not just in making every level operate reliably but in facilitating optimal performance.
CTV -PRC007-EN 36 • Evaporator leaving fluid temperature setpoint • Evaporator entering and leaving fluid temperatures • Condenser water entering and leaving water temperature • Current limit .
37 CTV -PRC007-EN Controls Sequence of Operation For this sequence of operation it will be assumed that the control source has signaled the chiller to be in Automatic (i.e. when there is a load present, the chiller will turn on and when the load disappears, the chiller will turn off).
CTV -PRC007-EN 38 A demand for chilled water is determined by a temperature differential between the evaporator fluid setpoint and the supply fluid temperature. Start is inhibited and the condition enunciated if high condenser pressure or low oil temperature or high motor winding temperature is detected.
39 CTV -PRC007-EN 60 Hz Compressors (English & SI Units) W eights Operating W eight** Shipping Weight** TYPE NTON CPKW EVSZ CDSZ (lbs) (kg) (lbs) (kg) CVHE 230-320 287 032S 032S 14909 6763 13721 6.
CTV -PRC007-EN 40 W eights Operating W eight** Shipping Weight** TYPE NTON CPKW EVSZ CDSZ (lbs) (kg) (lbs) (kg) CVHE 190-270 242 032S 032S 14259 6468 13071 5929 CVHE 190-270 242 032S 032L 14898 6758 1.
41 CTV -PRC007-EN Physical Dimensions CENTRA V AC W A TER CONNECTION PIPE SIZE W ater Shell Size Passes 032 050 080 142 210 EV APORA TOR Nominal Pipe Size (Inches) 1 P ASS 8 10 12 16 16 2 P ASS 6 8 10.
CTV -PRC007-EN 42 METRIC UNITS Envelope Clearance Unit Dimensions W/O Unit With Unit W/O Unit With Unit Shell Mounted Mounted T ube Mounted Mounted Shell Arrange- Starters Starters Pull Starters Start.
43 CTV -PRC007-EN CENTRA V AC W A TER CONNECTION PIPE SIZE W ater Shell Size Passes 032 050 080 142 210 250 EV APORA TOR Nominal Pipe Size (Inches) 1 P ASS 8 10 12 1 6 16 16 2 P ASS 6 8 10 12 14 14 3 .
CTV -PRC007-EN 44 METRIC UNITS Envelope Clearance Unit Dimensions W/O Unit With Unit W/O Unit With Unit Shell Mounted Mounted T ube Mounted Mounted Shell Arrange- Starters Starters Pull Starters Start.
45 CTV -PRC007-EN These graphics are intended to help you visualize the possible connections/combinations that may be available for your unit. Y o u must contact your local T rane office who can configure your selection as an as-built drawing to confirm it is available and to provide appropriate dimensions.
CTV -PRC007-EN 46 Waterbox Lengths – English Units RETURN RETURN SHELL PRESSURE EV AP P ASSES LENGTH LENGTH COND NO. P ASSES LENGTH LENGTH 320 150 PSIG MAR 1 16.12 MAR 2 16.674 6.125 320 150 PSIG MAR 2 16.12 6.94 NMAR 2 9.25 cast 6.125 320 150 PSIG MAR 3 16.
47 CTV -PRC007-EN Waterbox Lengths – Metric Units RETURN RETURN SHELL PRESSURE EV AP P ASSES LENGTH LENGTH COND NO. PASSES LENGTH LENGTH 320 150 PSIG MAR 1 409 MAR 2 424 156 320 150 PSIG MAR 2 409 1.
CTV -PRC007-EN 48 Compressor Guide V anes Fully modulating variable inlet guide vanes provide capacity control. The guide vanes are controlled by an externally mounted electric vane operator in response to refrigeration load on the evaporator .
49 CTV -PRC007-EN Condenser/Heat Recovery Condenser Shell and W aterboxes The condenser shell is formed of carbon steel plate designed and constructed in accordance with ANSI/ASHRAE 15 Safety Code. For all units, all pass arrangements are available at 150 psig or 300 psig water side working pressures with grooved connections.
CTV -PRC007-EN 50 The display also provides over 20 reports that are organized into four groupings: Custom Report, Chiller Report, Refrigerant Report, and Compressor Report. Each report contains data that is accessed by scrolling through the menu items.
51 CTV -PRC007-EN T rane Adaptive Frequency ™ Drive (AFD) The T rane AFD is a closed-loop, liquid- cooled, microprocessor based PWM design that converts fixed utility voltage and frequency to a variable voltage and frequency via a two-step operation.
Since The T rane Company has a policy of continuous product and product data improvement, it reserves the right to change design and specifications without notice. Literature Order Number File Number Supersedes Stocking Location The T rane Company An American Standard Company www .
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