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Trane CVGF manual

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Table of contents for the manual

  • Page 1

    CTV -PRC0 0 1 -GB September 2004 Centrifugal W at er Chillers Model CVGF W at er -Cooled Her metic Centr ifugal Refrigeration Capacities From 40 0 to 1 00 0 T ons (1400 kW -351 0 kW) 50 and 60 Hz[...]

  • Page 2

    CTV -PRC0 01 -GB © 2004 American Standard Inc. All rights reserved. Introduction Intr oducing T r ane’ s Model CV GF Centr ifugal W ater Chiller Introduction The basic gear driven centrifugal water chiller design was introduced in 1976 and has been proven in thousands of installations. The T rane Company continues to deliver its reliability and [...]

  • Page 3

    3 CTV -PRC0 0 1 -GB Introduction Features and Benefits Application Considerations General Data Jobsite Connections Controls Physical Dimensions Mechanical Specifications Con version T able Contents 2 4 9 10 12 13 17 19 23[...]

  • Page 4

    CTV -PRC0 01 -GB 4 Environmental Features and Benefits Improved Efficiency: • High Ef ficiency: 0.55 kW/T on at ARI conditions • Motor cooling vented to economizer cycle, efficiency advantage • HFC-134 optimized inlet guide vanes and impellers for improved cycle efficiency using computational fluid dynamics Reduced Emissions: • Over 30 perc[...]

  • Page 5

    5 CTV -PRC0 0 1 -GB Features and Benefits Microprocessor Controls with CH530 DynaV iew Operat or Interf ace DynaVi ew ™ is the unit-mounted control panel and also serves as the main processor and operator interface. It has a touch-sensitive overlay on a 1/4 V GA display . DynaV iew presents information through an intuitive, tabbed- navigation sys[...]

  • Page 6

    CTV -PRC0 01 -GB 6 Features and Benefits Serviceability Previous T rane c hiller controller s included a user interface that presented all chiller data necessary for both daily tasks and service or maintenance tasks. The amount of information presented on a limited display made a number of tasks dif ficult. A service tec hnician’ s ability to ass[...]

  • Page 7

    7 CTV -PRC0 0 1 -GB Features and Benefits Feedf orwar d A daptive Control The T racer c hiller controller allows the system designer to explore energy saving strategies and allows the centrifugal chiller to be used in ways that were never thought possible. Feedf orward A daptiv e Contr ol Feedforward is an open-loop, predictive control strategy des[...]

  • Page 8

    CTV -PRC0 01 -GB 8 • Communication capabilities: several communication levels are provided: — local, through a PC workstation keyboard. Summit can be programmed to send messages to local or remote workstations and or a pager in the following cases: — Analog parameter exceeding a programmed value. — Maintenance warning. — Component failure[...]

  • Page 9

    9 CTV -PRC0 0 1 -GB T w o-Stage Compr essor Widens the Application Range Why Centrifugal Compressors Surge Centrifugal compressors produce their pressure differential (head) by converting the kinetic energy of the gas leaving the impeller into static pressure. The velocity of this gas is the result of two components: • The radial velocity compone[...]

  • Page 10

    CTV -PRC0 01 -GB 10 Condenser W at er Limitations Te m p e r a t u r e T rane centrifugal c hiller s star t 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. However , the effect of lowering the condenser water temperat[...]

  • Page 11

    11 CTV -PRC0 0 1 -GB General Data T able GD-1 – Model CV GF Descr iption Model CVGF Nominal Cooling Capacity NTON 400 500 500 650 800 1000 Heat Exchanger Size Evaporator EVSZ 500 500 7 00 700 1000 1000 Condenser CDSZ 500 500 700 700 1000 1000 Heat Exchanger Bundles Evaporator EVBS A = Small A = Small A = Small A = Small A = Small A = Small B = Me[...]

  • Page 12

    CTV -PRC0 01 -GB 12 T able GD-3 – Evaporator and Condenser Flow rates (Minimum and Maximum, liters per second, gallons per minute) High Efficiency Shells - 0.75 inc h (19 mm) Int. Enhanced Cu T ube: Condenser: Nominal Shell 500 500 500 700 700 700 1000 1000 1000 1000 Bundle Size Small Medium Large Small M edium Large Small Medium Large Extra Larg[...]

  • Page 13

    13 CTV -PRC0 0 1 -GB Jobsite Connections Supply and Motor Lead Wiring and Connections Copper conductors only should be connected to the compressor motor due to the possibility of galvanic corrosion as a result of moisture if aluminum conductors are used. Copper conductors are recommended for supply leads in the starter panel. Suggested starter pane[...]

  • Page 14

    CTV -PRC0 01 -GB 14 Controls Standard Features Field Connection The field-connected elements are involved in physically turning the chiller on or off. This involves ensuring that the chiller is not in an emergency or external stop condition, starting the pumps, and verifying that flow has been established. The optional, factory- supplied flow switc[...]

  • Page 15

    15 CTV -PRC0 0 1 -GB Extended Operation Package Select the extended-operation package for chillers that require external , hot water control, and/or base-loading capabilities. This package also includes a 4-20 mA or 0-10 Vdc analog input for a refrigerant monitor . • External base-loading control input • External base-loading setpoint • Exter[...]

  • Page 16

    CTV -PRC0 01 -GB 16 Controls Standard Protections T r acer ™ Chiller Contr oller The chiller controller uses proportional- integral-derivative (PID) control for all limits—there is no dead band. This removes oscillation above and below setpoints and extends the capabilities of the c hiller . Some of the standard protection features of the chill[...]

  • Page 17

    17 CTV -PRC0 0 1 -GB Controls Standard Protections Momentary Power Loss and Distribution Fault Protection Three-phase momentary power loss (MPL) detection gives the chiller improved performance through many different power anomalies. MPLs of 2.5 cycles or longer will be detected and cause the unit to shut down. The unit will be disconnected from th[...]

  • Page 18

    CTV -PRC0 01 -GB 18 Figure PD-2 – Model CVGF Cooling Only Without Unit Mounted Start er (for Remote Mount ed Starter) Figure PD-1 – Model CVGF Cooling Only With Unit Mounted Star ter Physical Dimensions 50 and 60 Hz SI (English Units) Dimensions – SI Units (English Units) Clearance Unit Dimensions Unit Dimensions T ube Pull With Unit Mounted [...]

  • Page 19

    19 CTV -PRC0 0 1 -GB Physical Dimensions Ev aporator Wa ter Bo x Length — SI (English) Length No. mm (in) Shell Pressure Evap. Passes Supply Return 500 10 bar (150 psig) NMAR 2 371 (14.61) 156 (6.14) 10 bar (150 psig) NMAR 3 371 (14.61) 371 (14.61) 700 10 bar (150 psig) NMAR 2 489 (19.25) 235 (9.25) 10 bar (150 psig) NMAR 3 438 (17.24) 438 (17.24[...]

  • Page 20

    CTV -PRC0 01 -GB 20 The T rane CVGF pac k aged centrifugal water chillers using HFC-134a refrigerant consist of a hermetic two stage, gear -dri ve centrifugal compressor , evaporator, condenser , interstage economizer , unit-mounted microprocessor based control panel and compressor motor star ter . The chiller is completely factory assembled. Compr[...]

  • Page 21

    21 CTV -PRC0 0 1 -GB W elded steel two pass water boxes are bolted to the tube sheets. W ater connections are steel pipe stubs grooved for V ictaulic couplings; flanged connections are optionally available. Maximum waterside working pressure of 10.5 bars (150 psi) is standard. The waterside is hydrostatically tested at 1.5 times maximum working pre[...]

  • Page 22

    CTV -PRC0 01 -GB 22 Unit-mounted or remote-mounted starters for Europe (CE mark) will be star -delta, solid-state, across-the-line, primary reactor , and auto transformer only in a IP 20 enclosure. A steel panel door with optional mechanical interlock disconnects the system when the door is opened (required for CE listing). The panel also contains [...]

  • Page 23

    23 CTV -PRC0 0 1 -GB Conversion T able T o Convert Fr om: T o: Mulgpiy By: Length Feet (ft) meters (m) 0.30481 Inches (In) millimeters (mm) 25.4 Arca Square Feet (ft 2 ) square meters (m 2 ) 0.093 Square Inches (In 2 ) square millimeters (mm 2 ) 645.2 V olume Cubic Feet (ft 3 ) Cubic meters (m 2 ) 0.0283 Cubic Inches (In 3 ) Cubic mm (mm 3 ) 16387 [...]

  • Page 24

    www .trane.com For more information, contact your local district office or e-mail us at comfort@trane.com T rane has a policy of continuous product and product data improvement and reserves the right to c hange design and specifications without notice. Only qualified technicians should perform the installation and servicing of equipment referred to[...]