Trane CVHE-SVU01E-ENX39640712050 Manual de usuario

CVHE-SVU01E-ENX39640712050OperationMaintenanceWater Cooled CenTraVac™With CH530

CVHE-SVU01E-EN10GeneralInformationCooling CycleCVHE, CVHG, CVHFWhen in the cooling mode, liquidrefrigerant is distributed along thelength of the evapo

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11CVHE-SVU01E-ENFigure 3. CVHE, CVHG pressure enthalpy curveFigure 4. CVHE, CVHG 2-stage economizerGeneralInformation

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TraneA business of American Standard Companieswww.trane.comFor more information contact your local district officeor e-mail us at [email protected]

CVHE-SVU01E-EN12Figure 5. CVHF pressure enthalpy curveFigure 6. CVHF single stage economizerGeneralInformation

13CVHE-SVU01E-ENOverviewControls Operator InterfaceInformation is tailored to operators,service technicians and ownersWhen operating a chiller, there

CVHE-SVU01E-EN14GeneralInformationFigure 8. CVHE, CVHF, and CVHG sequence of operation: power up to startingFigure 9. CVHE, CVHF, and CVHG sequence of

15CVHE-SVU01E-ENGeneralInformationFigure 11. CVHE, CVHF and CVHG sequence of operation: normal shutdown to stopped and run inhibitFigure 10. CVHE, CVH

CVHE-SVU01E-EN16GeneralInformationOil and Refrigeration PumpCompressor Lubrication System -A schematic diagram of thecompressor lubrication system isi

17CVHE-SVU01E-ENGeneralInformationFigure 12. Oil refrigerant pump

CVHE-SVU01E-EN18GeneralInformationBase Loading ControlAlgorithm:This feature allows an externalcontroller to directly modulate thecapacity of the chil

19CVHE-SVU01E-ENGeneralInformationFigure 13. Base loading with external mA input and with external voltage input

© 2005 American Standard All rights reserved CVHE-SVU01E-ENWarnings andCautionsWarnings and CautionsNotice that warnings and cautionsappear at appropr

CVHE-SVU01E-EN20GeneralInformationIce Machine ControlThe control panel provides a servicelevel “Enable or Disable” menu entryfor the Ice Building feat

21CVHE-SVU01E-ENGeneralInformationFree Cooling CycleBased on the principle that refrigerantmigrates to the coldest area in thesystem, the free cooling

CVHE-SVU01E-EN22GeneralInformationit is then compressed anddischarged to the condenser. Most ofthe condensed refrigerant initiallyfollows the path of

23CVHE-SVU01E-ENGeneralInformationHot Gas BypassThe hot gas bypass (HGBP) controloption is designed to minimizemachine cycling by allowing thechiller

CVHE-SVU01E-EN24GeneralInformationHot Water controlOccasionally CTV chillers areselected to provide heating as aprimary mission. With hot watertempera

25CVHE-SVU01E-ENGeneralInformationHeat Recovery Cycle‘‘Heat recovery’’ is designed tosalvage the heat that is normallyrejected to the atmosphere throu

CVHE-SVU01E-EN26Unit ControlPanel (UCP)Control Panel Devices and UnitMounted DevicesUnit Control Panel (UCP)Safety and operating controls arehoused in

27CVHE-SVU01E-ENUnit ControlPanel (UCP)Tracer CH530 Chiller ControllerRevolutionary control of the chiller,chilled water system, and your entirebuildi

CVHE-SVU01E-EN28OperatorInterfaceFigure 17. DynaView™ main processorThe DynaView™ (DV) OperatorInterface contains the “MainProcessor (MP)” and is moun

29CVHE-SVU01E-ENOperatorInterfaceDynaView™ (DV) is the operatorinterface of the Tracer CH530 controlsystem utilized on the CTV machine.The DynaView™ e

3ContentsCVHE-SVU01E-ENWarnings and CautionsGeneral InformationUnit Control Panel (UCP)Operator InterfaceChilled Water SetpointInter Processor Communi

CVHE-SVU01E-EN30OperatorInterfaceThe Auto and Stop keys are used toput the unit into the auto or stopmodes. Key selection is indicated bybeing darkene

31CVHE-SVU01E-ENOperatorInterfaceThe machine-operating modeindicates the operational status of thechiller. A subscreen with additionalmode summary inf

CVHE-SVU01E-EN32OperatorInterfaceReferenceTop Level Mode Sub Level Mode BAS CodeSYSTEM RESET Boot & Application software part number, self-test, a

33CVHE-SVU01E-ENOperatorInterfaceReferenceTop Level Mode Sub Level Mode BAS CodeWaiting To Start Motor Temperature Inhibit: Motor Temperature / Inh

CVHE-SVU01E-EN34OperatorInterfaceMain ScreenThe main screen is provides “anoverall view“ of the chillerperformance in addition to the mainand sub oper

35CVHE-SVU01E-ENOperatorInterfaceDiagnostic ScreenThe diagnostic screen is accessibleby touching the Alarms enunciator.When an alarm is present, the a

CVHE-SVU01E-EN36OperatorInterfaceThe chilled water reset status area inthe right most column will displayone of the following messages:Return, Constan

37CVHE-SVU01E-ENOperatorInterfaceThe left column text “Front Panel”,“BAS”, “External”, and “ActiveCurrent Limit Setpoint” will alwaysbe present regard

CVHE-SVU01E-EN38OperatorInterfaceReportsEvaporator Report items UnitsEvaporator Entering Water Temperature °C or °FEvaporator Leaving Water Temperatur

39CVHE-SVU01E-ENOperatorInterfaceCompressor Report Items UnitsCompressor Starts: ###Compressor Running Time: Hour and minuteCompressor Discharge Tempe

CVHE-SVU01E-EN4Typical Product Description BlockMODL CVHE DSEQ 2R NTON 320 VOLT 575 REF 123HRTZ 60 TYPE SNGL CPKW 142 CPIM 222 TEST AIREVTM IECU EVTH

CVHE-SVU01E-EN40ASHRAE Chiller Log Units1. Current Time and Date Monitor HH:MM xm2. Operating Mode3. Active Chilled Water Setpoint: °C or °F4. Active

41CVHE-SVU01E-ENOperatorInterfaceSetting Tab screens provides a userthe ability to adjust settings justifiedto support daily tasks. The layoutprovides

CVHE-SVU01E-EN42OperatorInterfaceChillerDescription Units notes1. Front Panel Control Type (Chilled Water, Hot Water), Chilled Water default2. Front P

43CVHE-SVU01E-ENOperatorInterfaceDisplay SettingsDescription Units notes1. Date Format (“mmm dd, yyy”, “dd-mmm-yyyy”), “mmm dd, yyy”2. Date 43. Time F

CVHE-SVU01E-EN44OperatorInterfaceEach Settings Sub screen consists of a setpoints list and the current value.The operator selects a setpoint to change

45CVHE-SVU01E-ENOperatorInterfaceSettings with buttons only [screen has no cancel or enter key] do accept thenew selection immediately.Mode Override f

CVHE-SVU01E-EN46OperatorInterfaceThe mode override analog setting subscreen is similar but offers an Auto orManual radio button and value setting. An

47CVHE-SVU01E-ENOperatorInterfaceThe time setpoint screen with a 12-hour format is shown below: The usermust select Hour, or Minute and then use the u

CVHE-SVU01E-EN48OperatorInterfaceThe DynaView™ Display Touch Screen Lock screen is shown below. Thisscreen is used if the Display and Touch Screen Loc

49CVHE-SVU01E-ENInterprocessorCommunicationInter ProcessorCommunications IPC3When using Tracer CH530, you willnot be required to know all thedetails a

5CVHE-SVU01E-ENAn example of a typical modelnumber is:CVHF091NAL00ACU2758W7E8TBC0000000K01G14C10W1A03B1Model Number Digit IdentificationC = (1st digit

CVHE-SVU01E-EN50Control SystemComponentsControl Panel Internallymounted devicesFor visual identification InternalControl Panel mounted devices areiden

51CVHE-SVU01E-ENControl SystemComponents

CVHE-SVU01E-EN52Control SystemComponentsControl Panel DevicesStandard DevicesControls Field ConnectionDescription Package Purpose Point Terminals1A1 P

53CVHE-SVU01E-ENHead Relief Request OutputWhen the chiller is running inCondenser Limit Mode or in SurgeMode, the head relief request relay(1 minute d

CVHE-SVU01E-EN54Control SystemComponentsEXOP Extended Operation OptionThe following modules (1A17, 1A18, and 1A19) are provide when this control packa

55CVHE-SVU01E-ENControl SystemComponentsFRCL (Free Cooling Option)1A11 Optional Quad FRCL Relay #1 Free Cooling Relay 1, J2- 4 NO to J2-6 commonRelay

CVHE-SVU01E-EN56Control SystemComponentsCDRP Refrigerant PressureOutput Option 1A15:Refrigerant Pressure Output can beconfigured at commissioning toco

57CVHE-SVU01E-ENControl SystemComponentsB) Refrigerant Differential PressureIndication Output:A 2 to 10 VDC analog output isprovided instead of the pr

CVHE-SVU01E-EN58Control SystemComponentsGBAS (Generic Building Automation System)1A15 Optional Dual GBAS Signal #1 Percent RLA Compressor Output J2-1

59CVHE-SVU01E-ENControl SystemComponentsExternal Chilled WaterSetpoint (ECWS)The External Chilled Water Setpointallows the chilled water setpoint tobe

CVHE-SVU01E-EN6GeneralInformationCommonly Used AcronymsFor convenience, a number ofacronyms are used throughout thismanual. These acronyms are listeda

CVHE-SVU01E-EN60Control SystemComponents1A8, 1A9, 1A11, 1A12 Quad RelayOutput Status:Relay #1 J2-1 NO, J2-2 NC, J2-commonRelay #2 J2-4 NO, J2-5 NC, J2

61CVHE-SVU01E-ENControl SystemComponents1A15, 1A16, 1A17, 1A21 Dual AnalogInput/output Module;Analog Output: The Analog Output isa voltage only signal

CVHE-SVU01E-EN62Control SystemComponentsUnit mounted devicesVane Actuator ControlThe Stepper Module within thestepper vane actuator (4M2) (and 4M4exte

63CVHE-SVU01E-ENElectrical SequenceThis section will acquaint theoperator with the control logicgoverning CVHE, CVHF and CVHGchillers equipped with Tr

CVHE-SVU01E-EN64When less than 2.5 seconds remainbefore compressor start, a starter testis conducted to verify contactorstates prior to starting theco

65CVHE-SVU01E-ENNow that the compressor motor(4M1) is running in the ‘‘Delta’’configuration, the inlet guide vaneswill modulate, opening and closingto

CVHE-SVU01E-EN66Interval Minimum Maximum Units Actual DesignA. (Test for transition completeinput open) 160 to 240 millisecondsB. (Just delay time) 20

67CVHE-SVU01E-ENCurrent passing through fuse 1F2reaches 2 normally open parallel setsof contacts: those of refrigerant andoil pump relay (1A7-J2-5 to

CVHE-SVU01E-EN68Momentary Power Loss (MPL)Protection.Improved power measurement andprotection algorithms allow the unitto accommodate more poweranomal

69CVHE-SVU01E-ENCurrent Overload ProtectionMotor currents are continuouslymonitored for over current protectionand locked rotor protection. Thisprotec

7CVHE-SVU01E-ENGeneralInformationFigure 1. General CVHE and CVHG unit componentsOverviewCVHE, CVHG, CVHFEach CVHE, CVHG, or CVHF unit iscomposed of 5

CVHE-SVU01E-EN70Current Limit ProtectionCurrent Limit Protections exist toavoid motor current overload anddamage to the compressor motorduring startin

71CVHE-SVU01E-ENDifferential to Start or StopThe Differential to Start setpoint isadjustable from 1 to 10°F (0.55 to5.55°C) and the Differential to St

CVHE-SVU01E-EN72Evaporator LimitEvaporator refrigerant temperature iscontinuously monitored to provide alimit function that prevents lowrefrigerant te

73CVHE-SVU01E-ENLow Refrigerant TemperatureCutoutThe purpose of the low evaporatorrefrigerant temperature protection isto prevent water in the evapora

CVHE-SVU01E-EN74Figure 27. Cutout strategyMachine Protectionand AdaptiveControlLimit Loading: The potential to limit loading increases as the saturate

75CVHE-SVU01E-ENCondenser LimitCondenser pressure is continuouslymonitored to provide a limit functionthat prevents High Pressure Cutout(HPC) trips. T

CVHE-SVU01E-EN76Restart Inhibit.This function provides short cycleprotection for the motor, andindirectly also short cyclingprotection for the starter

77CVHE-SVU01E-ENHigh Vacuum LockoutThe oil sump pressure is below thelockout setpoint. Starting ofcompressor is inhibited as a result.Low Oil Temperat

CVHE-SVU01E-EN78Oil Temperature ControlThe oil heater is used to maintain theoil temperature within +/- 2.5°F (1.4°C)of the oil temperature controlset

79CVHE-SVU01E-ENControls Chilled Water Reset(CWR)Chilled water reset is designed forthose applications where the designchilled water temperature is no

CVHE-SVU01E-EN8GeneralInformationFigure 1. General CVHE and CVHG unit components - continued

CVHE-SVU01E-EN80Table 3. Values for start reset typesThe values for “RESET TYPE” are:Reset Outdoor Return Const ReturnType: Disable Air Reset Reset Re

81CVHE-SVU01E-ENReset Ratio:The Reset Ratio is displayed as apercentage. To use it in the aboveequation it must be converted to it’sdecimal form.Reset

CVHE-SVU01E-EN82Figure 29. Reset function for return CWRNote: This graph assumes Maximum Reset is set to 20 degrees.Figure 30. Reset function for retu

83CVHE-SVU01E-ENExample of Calculating Return Reset:If:Reset Ratio = 50%Start Reset = 25TWE = 65TWL = 45Maximum Reset = 8How many Degrees of Reset wil

CVHE-SVU01E-EN84Figure 31. Return CWRFigure 32. Constant CWRMachine Protectionand AdaptiveControl

85CVHE-SVU01E-ENUnit Start-Up ProceduresDaily Unit Start-Up1. Verify the chilled water pump andcondenser water pump starter arein “ON” or “AUTO”.2. Ve

CVHE-SVU01E-EN86When the cooling requirement issatisfied, the UCP originates a“Shutting down” signal. The inletguide vanes are driven closed for 50sec

87CVHE-SVU01E-ENUnit Shutdown ProceduresDaily Unit ShutdownNote: Refer to Start-Run Shutdownsequence in General InformationOverview Sequence of Operat

CVHE-SVU01E-EN88OverviewThis section describes the basicchiller preventive maintenanceprocedures, and recommends theintervals at which these procedure

89CVHE-SVU01E-EN WARNINGHazardous Voltage w/Capacitors!Disconnect all electric power,including remote disconnects beforeservicing. Follow proper

9CVHE-SVU01E-ENGeneralInformationFigure 2. Illustrates the general component layout of a typical CVHF chiller

CVHE-SVU01E-EN90[ ] Complete all recommendedquarterly maintenance procedures.[ ] Lubricate the vane control linkagebearings, ball joints, and pivotpoi

91CVHE-SVU01E-ENOil MaintenanceCompressor Oil Change onCVHE, CVHF, CVHGRecommendations are to subscribeto an annual oil analysis programrather than au

CVHE-SVU01E-EN92Oil MaintenanceReplacing Oil FilterReplace oil filter: (1) annually, (2) ateach oil change, (3) or if erratic oilpressure is experienc

93CVHE-SVU01E-ENMaintenanceOther MaintenanceRequirementsCompressors using new sealtechnology will not use O-rings. TheO-ring has been replaced by Loct

CVHE-SVU01E-EN94MaintenanceFigure 33. Rotary valve in drain positionFront View with Refrigerant PumpDO NOT LEAVE GREASE FITTINGSINSTALLED.If grease fi

95CVHE-SVU01E-ENMaintenanceRefrigerant Charge WARNINGContains Refrigerant!System contains oil and refrigerantand may be under positive pressure.R

CVHE-SVU01E-EN96MaintenanceRecovery and RecycleConnectionsTo facilitate refrigerant removal andreplacement, newer-design CVHE,CVHF and CVHG units are

97CVHE-SVU01E-ENMaintenanceCondenser tube fouling is indicatedwhen the approach temperature (thedifference between the condensingrefrigerant temperatu

CVHE-SVU01E-EN98MaintenancePurge SystemBecause some sections of thechiller’s refrigeration system operateat less-than-atmospheric pressure,the possibi

99CVHE-SVU01E-ENMaintenance WARNINGHazardous Voltage w/Capacitors!Disconnect all electric power,including remote disconnects beforeservicing. Fol