cvhe

Installation –Electrical Information

Water-Cooled CenTraVac™

With CH530

CVHE-SVN03C-EN

Required Installation Information:

CVHE-SVN03C-EN – Electrical Information

X39640647030

CVHE-SVN01B-EN – General InformationCVHE-SVN02C-EN – Piping Information

© 2003 American Standard Inc. All rights reserved. CVHE-SVN03C-EN

Warnings andCautions

Warnings and CautionsNotice that warnings and cautionsappear at appropriate intervalsthroughout this manual. Warningsare provided to alert installingcontractors to potential hazards thatcould result in personal injury or

death, while cautions are designedto alert personnel to conditions thatcould result in equipment damage.

Your personal safety and the properoperation of this machine dependupon the strict observance of theseprecautions.

NOTICE: Warnings and Cautions appear at appropriate sections throughout this manual.Read these carefully.

�� WARNING – Indicates a potentially hazardous situation which, if not avoided, could result indeath or serious injury.

�� CAUTION – Indicates a potentially hazardous situation which, if not avoided, may result inminor or moderate injury. It may also be used to alert against unsafe practices.

CAUTION – Indicates a situation that may result in equipment or property-damage-only accidents.

3

Contents

CVHE-SVN03C-EN

Warnings and Cautions

General

Power Supply

PFCC

Unit Mounted Starter

Remote Starter

Motor Lugs

Field Control Panel Signal Wiring

Wiring Diagrams

Legend

2

4

8

9

10

11

13

15

21

68

CVHE-SVN03C-EN4

General Requirements

�� WARNING!

Hazardous Voltage!Use extreme caution whenmeasurements, adjustments, orother service-related work isperformed with power on. Failure todisconnect power before servicingcould result in death or seriousinjury.

�� WARNING

Rotating Parts!During installation, testing, servicingand troubleshooting of this productit may be necessary to measure thespeed of rotating components. Havea qualified or licensed serviceindividual who has been properlytrained in handling exposed rotatingcomponents perform these tasks.Failure to follow all safetyprecautions when exposed torotating components could result indeath or serious injury.

As you review this manual, alongwith the wiring instructionspresented in this section, keep inmind that:

Typical field connectionrequirements for remote-mountedstarters are shown at the end of themanual, and summarized in Table 1.

ElectricalInformation

Note: Unit-mounted starters areavailable as an option on mostCVHE, CVHF, and CVHG units withwye delta, and solid-state starters,with nominal voltages of up to 600volts and unit mounted mediumvoltage across-the-line starters..

While this option eliminates mostfield-installed wiring requirements,the electrical contractor must stillcomplete the electrical connectionfor: (1) Power supply wiring to thestarter, (2) Other unit control optionspresent, and (3) Any field-suppliedcontrol devices.

All field-installed wiring mustconform to National Electric Code(NEC) guidelines, as well as to anyapplicable state and local codes. Besure to satisfy proper equipmentgrounding requirements per NEC.

All field-installed wiring must bechecked for proper terminations, andfor possible shorts or grounds.

Note: The typical customerconnection diagrams shown in thismanual are representative ofstandard CVHE, CVHF and CVHGunits, and are provided only forgeneral reference. Always refer tothe actual wiring diagrams thatshipped with the chiller for specificas built electrical schematic andconnection information.

Do not modify or cut enclosure toprovide electrical access. Removablepanels have been provided for thispurpose. Modify these panels only;away from enclosure. Refer toinstallation information shipped withthe starter or submittal drawings.

CAUTIONTO AVOID DAMAGE TO STARTERCOMPONENTS, remove debrisinside the starter panel. Failure to doso may cause an electrical short thatseriously damages the startercomponents.

General

5CVHE-SVN03C-EN


Table 1. CVHE, CVHF, and CVHG standard remote starter field wiring requirements

Starter Panel

Power Supply wiring (to Starter Panel) Terminals3-Phase Line Voltage: Terminal Block 2X3-L1, L2, L3, All wiring to be in(2TB3 or 2X3) and GROUND accordance with

National ElectricalCode and any localcodes.

3-Phase Line Voltage: Circuit Breaker 2Q1-L1,L2,L3,and GROUND

Remote Starter to Chiller MotorJunction Box T1 through T6Starter to UCP Starter Panel Unit Control

120VAC control wiring Terminals Panel Terminations120VAC Power Supply 2X1-1-1, 1X1-1, #8 gauge minimum(from starter to UCP) 2X1-2 1X1-12 40 amps circuit

2X1-20(Ground) 1X1-18 (Ground)High Pressure Cutout to Starter 2X1-4, 1X1-4 14 ga.1Q1 Circuit Breaker to Starter 2X1-6 1X1-3 14 ga.Oil Pump Interlock 2X1-7, 1A7-J2-4, 14 ga.

2X1-8 1A7-J2-2Low Voltage Circuits Starter Panel Unit Control

(less than 30VAC) Terminals Panel TerminationsStandard CircuitsInter Processor Communications (IPC) 2A1- J3-3 to 4, or 2 wire w/ groundRemote Mounted 2X1-12 to 13 1A1-J5-3 to 4 Comm link.

if present Shield ground at(do not ground 1X1- 22(GND) only.shield at starter )

Standard Field Power wiring:Note: All wiring to be in accordance with National Electrical Code and any local codes.

Reference Field connection diagram 2309-4935 in this manual

Trane SuppliedRemote Starter

CVHE-SVN03C-EN6


Table 2. CVHE, CVHF, and CVHG standard customer supplied remote field wiring requirements

Starter Panel

Power Supply wiring (to Starter Panel) TerminalsStarter by others See “Starter by All wiring to be inPower wiring: others” schematic accordance with3-Phase Power Supply National ElectricalStarter and Motor Junction Box Code and any localInterconnection (Remote starter only) codes.Starter provided by others:

Starter Panel Unit Control

Starter to UCP 120VAC control wiring Terminals Panel Terminations120VAC Power Supply See “Starter by #8 gauge minimum

others” schematic 40 amps circuit5X1-1, 1X1-1,5X1-2 1X1-125X1-20 (Ground) 1X1-18

Power from UCP 1Q1 5X1-3 1X1-3, 1A23-J6-3 14 ga.Interlock Relay signal 5X1-4 1A23-J10-1 14 ga.Start contactor signal 5X1-5 1A23-J8-1 14 ga.Oil Pump Interlock 5X1-7, 1A7-J2-4, 14 ga.

5X1-8 1A7-J2-2Run Contactor signal 5X1-10 1A23-J6-12 14 ga.Transition Complete 5X1-14 1A23-J12-2 14 ga.Low Voltage Circuits Starter Panel Unit Control

(less than 30VAC) Terminals Panel TerminationsStandard Circuits

Current Transformers* 5CT4- wht, blk 1A23-J7-1,2 Note: Phasing must(see table next page) 5CT5- wht, blk 1A23-J7-3,4, be maintained

5CT6- wht, blk 1A23-J7-5,6,Potential Transformers 5T17-236,237 1A23 –J5-1,2, Note: Phasing must

5T18-238,239 1A23 –J5-3,4, be maintained5T19-240,241 1A23 –J5-5,6

Starter Supplied by Others -Standard Field Power wiring:Note: All wiring to be in accordance with National Electrical Code and any local codes.Reference Field Connection Customer Supplied Starter diagram 2309-4936 in this manual

Reference “Starter by Others” Specification available from your local Trane sales office.

Customer SuppliedRemote Starter

7CVHE-SVN03C-EN


Customer SuppliedRemote Starter

Table 3. Current transformer and potential transformer wire sizing tables for customer supplied starter to chiller unitcontrol panel starter module 1A23

The maximum recommended wire length for secondary CT leads in a dual CT system are:Wire Maximum Wire Length Secondary CT Leads

AWG (mm2) Feet Meters8 (10) 1362.8 415.5

10 (6) 856.9 261.212 (4) 538.9 164.314 (2.5) 338.9 103.316 (1.5) 213.1 65.017 (1) 169.1 51.518 (0.75) 134.1 40.920 (0.5) 84.3 25.7

Note:1. Wire lengths are for copper conductors only.2. Wire lengths are total “one way” distance that the CT can be from the Starter module.

The maximum recommended total wire length for PT’s in a single PT system:Wire Gauge Max lead length (ft) Max lead length (m)

8 5339 162710 3357 102312 2112 64314 1328 40416 835 25417 662 20118 525 16020 330 10021 262 7922 207 63

The maximum recommended total wire length (to and from) for PT leads in a dual PT system are:Max Wire Length Max Wire Length Max Wire Length Max Wire Length

Wire Gauge Primary (ft) Primary (m) Secondary (ft) Secondary (m)8 3061 933 711 217

10 1924 586 447 13612 1211 369 281 8514 761 232 177 5316 478 145 111 3317 379 115 88 2618 301 91 70 2120 189 57 44 1321 150 45 34 1022 119 36 27 8

Note: These wire lengths are for copper conductors onlyNote: The above lengths are maximum round trip wire lengths. The maximum distance the PT can be located from the Starter module is 1/2 of the listed value.

CVHE-SVN03C-EN8

3. Use copper conductors to connectthe 3-phase power supply to theremote or unit-mounted starterpanel.

CAUTIONUSE ONLY COPPER CONDUCTORSFOR TERMINAL CONNECTIONS.Failure to do so may cause corrosionor overheating, and starter damage.

4. Size the power supply wiring inaccordance with the MinimumCircuit Ampacity (MCA) shown onthe unit nameplate.(MCA = (RLA x 1.25) + ControlPower Load)

5. Make sure that the incomingpower wiring is properly phased;each power supply conduit run tothe starter must carry the correctnumber of conductors to ensureequal phase representation. SeeFigure 1.


6. As you install the power supplyconduit, make sure that thisposition does not interfere with theserviceability of any of the unitcomponents, nor with structuralmembers and equipment.

Also, assure that the conduit is longenough to simplify any servicing thatmay be necessary in the future (e.g.,starter removal).

Note: Use flexible conduit toenhance serviceability and minimizevibration transmission.

Circuit Breakers and FusibleDisconnects

Size the circuit breaker or fusedisconnect in compliance with NECor local guidelines.

Power Supply Wiring

To assure that power supply wiringto the starter panel is properlyinstalled and connected, review andfollow the guidelines outlined below.

3-Phase Power Source

1. Verify that the starter nameplateratings are compatible with thepower supply characteristics andwith the electrical data on the unitnameplate.

2. If the starter enclosure must be cutto provide electrical access,exercise care to prevent debrisfrom falling inside the enclosure. Ifthe starter cabinet has aremovable panel, be sure toremove the panel from the unitbefore drilling holes.

CAUTIONTO AVOID DAMAGE TO STARTERCOMPONENTS, remove debrisinside the starter panel. Failure to doso may cause an electrical short thatseriously damages the startercomponents.

Figure 1. Proper phasing for starter power supply wiring and conduit loading

Power Supply

9CVHE-SVN03C-EN


Table 3. PFCC design voltage sizing per compressor voltage application

PFCC Design Voltage Compressor Motor Rating(See Unit Nameplate)

240/60 Hz 208V/60 Hz480V/60 Hz 380V/60 Hz

440V/60 Hz460V/60 Hz480V/60 Hz

600V/60 Hz 575V/60 Hz600V/60 Hz

2400V/60 Hz 2300V/60 Hz2400V/60 Hz

PFCC Rating Compressor Motor Rating(See Unit Nameplate)

480V/50 Hz 346V/50 HZ380V/50 HZ400V/50 Hz415V/50 Hz

4160V/60 Hz 3300V/60 Hz4160V/60 Hz

Optional PFCCs

Power factor correction capacitors(PFCCs) are designed to providepower factor correction for thecompressor motor. They areavailable as an option.

Note: Remember that the PFCCnameplate voltage rating must begreater than or equal to thecompressor voltage rating stampedon the unit nameplate. See Table 2 todetermine what PFCC is appropriatefor each compressor voltageapplication.

CAUTIONPFCCS MUST BE WIRED INTO THESTARTER CORRECTLY! Failure to doso may cause misapplication ofthese capacitors and result in a lossof motor overload protection andsubsequently cause motor damage.

Figure 2. PFCC leads routed through overload current transformer

Note: See the attached wiring diagram for more detail.

Line Line

PFCCPFCC

LoadMotor LoadMotor

OverloadCurrentTransormer

OverloadCurrentTransormer

•• •

– OR –

PFCC

CVHE-SVN03C-EN10


Figure 3. Typical equipment room layout with unit-mounted, Wye-Delta

Interconnecting Wiring

Typical equipment room conduitlayouts with and without unit-mounted starters are shown inFigures 3 and 4, respectively.

IMPORTANT

Keep in mind that theinterconnecting wiring between thestarter panel, compressor and UCPcontrol panel is factory-installed withunit-mounted starters but must befield-installed when a remote-mounted starter is used.

Note:

See Starter submittal drawing for location of incoming wiring to the starter.

Unit MountedStarter

11CVHE-SVN03C-EN


Notes:1. Refer to the unit field connection diagram for approximate UCP knockout locations.2. 115-volt conduit must enter the higher than 30 Vdc Class I portion of the unit control panel.3. IPC circuit conduit must enter the Low Voltage Class II portion of the UCP.4. See starter submittal drawing for location of incoming wiring to the starter.

Unit Control Panel

Figure 4. Typical equipment room layout with remote-mounted Wye-Deltastarter

Remote Starter

CVHE-SVN03C-EN12

ElectricalInformation Remote Starter

Starter to Motor (Remote-Mounted Starters Only)

Ground Wire Terminal LugsGround wire lugs are provided in themotor terminal box and in the starterpanel.

Terminal ClampsTerminal clamps are supplied withthe motor terminals toaccommodate either bus bars orstandard motor terminal wire lugs.Terminal clamps provide additionalsurface area to minimize thepossibility of improper electricalconnections.

Wire Terminal LugsWire terminal lugs must be field-supplied.

1. Use field-provided crimp-type wireterminal lugs properly sized for theapplication.

Note: Wire size ranges for thestarter line and load-side lugs arelisted on the starter submittaldrawings supplied by the startermanufacturer or Trane. Carefullyreview the submitted wire lugsizes for compatibility with theconductor sizes specified by theelectrical engineer or contractor.

2. A terminal clamp with a 3/8" bolt isprovided on each motor terminalstud; use the factor-suppliedBelleville washers on the wire lugconnections.

Figure 5 illustrates the juncturebetween a motor terminal studand terminal clamp.

3. Tighten each bolt to 24 foot-pounds.

4. Install but do not connect thepower leads between the starterand compressor motor. (Theseconnections will be completedunder supervision of a qualifiedTrane service engineer after theprestart inspection).

CAUTIONENSURE THE POWER SUPPLYWIRING AND OUTPUT TO MOTORWIRING ARE CONNECTED TO THEPROPER TERMINALS. Failure to doso will cause catastrophic failure ofthe starter and, or motor

Bus BarsInstall the bus bars between themotor terminals when a low-voltage“across-the-line”, “primary reactor/resistor,” “auto transformer” orcustomer-supplied solid-state, orcustomer-supplied AFD.

Be sure to bus motor terminal T1 toT6, T2 to T4, and T3 to T5.

Note: Bus bars are not needed inhigh-voltage applications since only3 terminals are used in the motorand starter.

Starter to UCP (Remote-Mounted Starters Only)

Electrical connections requiredbetween the remote-mounted starterand the unit control panel are shownin an example of a point-to-pointstarter-to-UCP connection diagramas shown at the end of the manual.

Note: Install control voltage conduitinto control voltage section of chillercontrol panel and starter panel. Donot route with low voltage (30 volts)conduit wires.

When sizing and installing theelectrical conductors for thesecircuits, follow the guidelines listed.

Unless otherwise specified use14 ga. wire for 120 V control circuits.

13CVHE-SVN03C-EN

ElectricalInformation Remote Starter

CAUTION

Starter ComponentDamage.Remove debris inside the starterpanel. Failure to do so may cause anelectrical short that seriouslydamages the starter components.

1. If the starter enclosure must be cutto provide electrical access,exercise care to prevent debrisfrom falling inside the enclosure.Do not cut AFD enclosure.

2. Use only shielded twisted pair forthe interprocessor communication(IPC) circuit between the starterand the UCP on remote mountedstarters. Recommended wire isBeldon Type 8760, 18 AWG forruns up to 1000 feet.

Note: The polarity of the IPC wirepair is critical for proper operation.

3. Separate low-voltage (less than30V) wiring from the 115V wiringby running each in its ownconduit.

4. As you route the IPC circuit out ofthe starter enclosure, make surethat it is at least 6" from all wirescarrying a higher voltage.

5. For UCP IPC shielded twisted pairwiring, the shield should begrounded on one end only at UCPat 1X1-G. The other end should beunterminated and taped back onthe cable sheath to prevent anycontact between shield andground.

6. Oil Pump Interlock - All startersmust provide an interlock (N.O.)contact with the chiller oil pumpconnected to the UCP at Terminals1A7-2-4 and 1A7-J2-2 (14 ga.)

The purpose of this interlock is topower the oil pump on the chillerin the event that a starter failure,such as welded contacts, keeps thechiller motor running after thecontroller interrupts the run signal.

CAUTION

Electrical Noise.

Maintain at least 6 inches betweenlow-voltage (<30V) and high voltagecircuits. Failure to do so could resultin electrical noise that may distortthe signals carried by the low-voltage wiring, including the IPC.

CVHE-SVN03C-EN14


Figure 5. Terminal stud, clamp and lug assembly

Motor Lugs

15CVHE-SVN03C-EN

Table 4

Standard Control Circuits: Unit Control Included Input or All wiring to be inUCP Control Wiring Terminations in Output accordance with(120 VAC) Factory Type National Electrical

Package Code and any localcodes.Contacts

Chilled Water Flow Proving Input 1X1-5 to 1A6-J3-2 Std. Binary Input Normally Open,closure with flow

Condenser Water Flow Proving Input 1X1-6 to 1A6-J2-2 Std. Binary Input Normally Open,closure with flow

Chilled Water Pump Relay Output 1A5-J2- 4 to 6 Std. Binary Output Normally OpenCondenser Water Pump Relay Output 1A5-J2-1 to 3 Std. Binary Output Normally OpenOptional

Control Circuits(120 VAC)Alarm Relay MAR (Non-Latching) Output 1A8-J2-1 to 3 OPST Binary Output Normally OpenLimit Warning Relay Output 1A8-J2-4 to 6 OPST Binary Output Normally OpenAlarm Relay MMR (Latching) Output 1A8-J2-7 to 9 OPST Binary Output Normally OpenCompressor Running Relay Output 1A8-J2-10 to 12 OPST Binary Output Normally OpenMaximum Capacity Relay Output 1A9-J2-1 to 3 OPST Binary Output Normally OpenHead Relief Request Relay Output 1A9-J2-4 to 6 OPST Binary Output Normally OpenPurge Alarm Relay Output 1A9-J2-7 to 9 OPST Binary Output Normally OpenIce Making Relay Output 1A5-J2-10 to 12 EXOP Binary Output Normally OpenFree Cooling Relay Output 1A11-J2-4 to 6 FRCL Binary Output Normally OpenStandard Low Voltage Circuits Unit Control Input or Output

Low Voltage Circuits Panel Terminations Type(less than 30VAC)External Auto Stop Input 1A13-J2-1 to 2 Std. Binary Input Closure required for

normal operationEmergency Stop Input 1A13-J2-3 to 4 Std. Binary Input Closure required for

normal operationOptional

Low Voltage CircuitsExternal Base Loading Enable Input 1A18-J2-1 to 2 EXOP Binary Input Normally OpenExternal Hot Water Control Enable Input 1A18-J2-3 to 4 EXOP Binary Input Normally OpenExternal Ice Machine Control Enable Input1A19-J2-1 to 2 EXOP Binary Input Normally OpenExternal Free Cooling Input Enable Input 1A20-J2-1 to 2 FRCL Binary Input Normally OpenRLA Compressor Output 1A15-J2-1 to 3 GBAS or Analog Output 2-10 vdc

CDRPExternal Condenser Pressure Output 1A15-J2-4 to 6 GBAS or Analog Output 2-10 vdc

CDRPExternal Current Limit Setpoint Input 1A16-J2-2 to 3 GBAS Analog Input 2-10 vdc, or 4-20 mAExternal Chilled Water Setpoint Input 1A16-J2-5 to 6 GBAS Analog Input 2-10 vdc, or 4-20 mAExternal Base Load Setpoint Signal Input 1A17-J2-2 to 3 EXOP Analog Input 2-10 vdc, or 4-20 mAGeneric Refrigerant Monitor input 1A17-J2-5 to 6 EXOP Analog Input 2-10 vdc, or 4-20 mAOutdoor Air Temperature sensor IPC bus Connection Communication

and sensor CWR and sensor.Tracer Comm Interface 1A14-J2-1(+) to 2(-) TRMM or Communication

1A14-J2-3(+) to 4(-) LCI-C to Tracer


Field Control PanelSignal Wiring

CVHE-SVN03C-EN16


UCP Electrical Specifications

Following is a requirements list forthe UCP in the control panel:

Note that the control panel isdesigned to receive input from thesecondary of a power transformer inthe starter panel.

1. Nominal Voltage: 115/110 VAC, 60/50 Hz with operating range of 98 to127 VAC, inclusive.

2. Maximum VA: 4K VA (40-ampfuse) for units with the refrigerantpump.

3. Power input wiring must be atleast 6" (152 mm) from low-voltage, less than 30V wiring.

4. All signal inputs are low-voltageless than 30V.

5. UCP Storage Range: -40°F to 158°F(-40°C to 70°C) i.e., not applicablefor chiller.

Water Pump Interlock Circuitsand Flow Switch Input

Chilled Water Pump. Wire theevaporator water pump contactor(5K1) to a separate 120 volt singlephase power supply with 14 AWG,600 volt copper wire, then connectthis circuit to 1A5-J2-6. Then use1A5-J2-4 120 VAC output to allow theUCP to control the evaporator waterpump, or wire the 5K1 contactor tooperate remotely and independentlyof the UCP.

Chilled Water Proof of FlowWire the auxiliary contacts of theevaporator water pump contactor(5K1) in series with the flow switch(5S1) installed in the evaporatorsupply pipe. Use 14 AWG, 600-voltcopper wire.

Connect this circuit to UCP terminals1X1-5 to 1A6-J3-2.

When installed properly, the chilledwater interlock circuit will only allowcompressor operation if theevaporator pump is running andproviding at least the minimumwater flow required.

Condenser Water Pump. Wire thecondenser water pump contactor(5K2) to a separate 120-volt, single-phase power supply with 14 AWG,600-volt copper wire; then connectthis circuit to UCP terminals 1A5-J2-3. Then use 1A5-J2-1 120 VAC outputto allow UCP to control thecondenser pump.

Condenser Water Proof of FlowNext, use 14 AWG, 600-volt copperwire to connect the auxiliary contactsof the condenser water pumpcontactor (5K2) in series with theflow switch (5S2) installed in thecondenser supply pipe.

Connect this circuit to UCP terminals1X1-6 to 1A6-J2-2.

When installed properly, thecondenser water lock circuit will onlyallow the compressor to operate ifthe condenser pump is running andproviding at least the minimumwater flow required.

17CVHE-SVN03C-EN


Temperature Sensor CircuitsAll temperature sensors are factory-installed except the optional outdoorair temperature sensor. This sensoris required for the outdoor airtemperature type of chilled waterreset. Follow the guidelines below tolocate and mount the outdoor airtemperature sensor. Mount thesensor probe where needed,however, mount the sensor modulein the UCP.

CWR - Outdoor OptionThe outdoor temperature sensorsimilar to the unit mountedtemperature sensors in that itconsists of the sensor probe and themodule. A four-wire IPC bus isconnected to the module for 24 vdcpower and the communications link.

We recommend mounting thesensor module within the UCP andthe sensor two wire leads beextended and routed to the outdoortemperature sensor probe sensinglocation. This assures the four wireIPC bus protection and providesaccess to the module forconfiguration at start-up.

The sensor probe lead wire betweenthe sensor probe and the modulecan be separated by cutting the twowire probe lead leaving equallengths of wire on each device; thesensor probe and the sensormodule. Note this sensor andmodule are matched and mustremain together or inaccuracy mayoccur. These wires can then bespliced to with two 14-18 AWG 600Vwires of sufficient length to reach thedesired outdoor location, maximumlength 1000 feet (305 meters). Themodule four-wire bus must beconnected to the UCP four-wire bususing the Trane approvedconnectors provided.

The sensor will be configured (givenits identity and become functional) atstart-up when the servicemanperforms the start-up configuration.

It will not be operational until thattime.

Note: If shielded cable is used toextend the sensor leads, be sure totape off the shield wire at thejunction box and ground it at theUCP. If the added length is run inconduit, do not run them in the sameconduit with other circuits carrying30 or more volts.

Note:

MAINTAIN AT LEAST 6 INCHESBETWEEN LOW-VOLTAGE (<30V)AND HIGH VOLTAGE CIRCUITS.Failure to do so could result inelectrical noise that may distort thesignals carried by the low-voltagewiring, including the IPC.

Optional Relay Circuits

Optional Control and Output CircuitsInstall various optional wiring asrequired by the owner’sspecifications.

TRMM or LC1-C

Optional TracerCommunication InterfaceThis control options allows the UCPto exchange information such aschiller status and operating setpoints with a Tracer system.

Figure 7 illustrates how such acommunication/control networkmight appear.

Note: The circuit must be run inseparate conduit to prevent electricalnoise interference.

Additional information about theTracer Comm option is published inthe installation manual andoperator’s guide that ships with theTracer.

Unit Start-UpAll phases of initial unit start-up mustbe conducted under the supervisionof a qualified local service engineer.

This includes pressure testing,evacuation, electrical checks,refrigerant charging, actual start-upand operator instruction.

Advance notification is required toassure that initial start-up isscheduled as close to the requesteddate as possible.

Starter Module ConfigurationThe starter module configurationsettings will be checked (andconfigured for Remote Starters)during start-up commissioning. Toconfigurate starter module, andperform other starter checks, it isrecommended that the line voltagethree phase power be turned off andsecured (locked out), and then aseparate source control power (115vac) be utilized to power up thecontrol circuit. To do this, removecontrol coil circuit fuse, typically 2F4,and then connect separate sourcepower cord to starter terminal block2X1-1 (H), 2X1-2 (N), and Ground.Use the “as-built starter schematic”to assure correct fuse and terminals.Verify correct fuse is removed,control circuit connections arecorrect, then apply the 115 vacseparate source power to service thecontrols.

Forms InformationSamples of start-up and operatingforms along with other helpful formsare found in the OperationMaintenance manual which can beobtained from the nearest Traneoffice.

It is recommended that theserviceman contact the local Traneoffice to obtain the most recentprinting date of the form. The formsin the operation and maintenancemanual are only current at the timeof printing of the manual.

After obtaining the most recent form,complete all the information andforward it to your local Trane office.

CVHE-SVN03C-EN18

Control Panel Internallymounted devicesFor visual identification InternalControl Panel mounted devices areidentified by their respectiveschematic designation number.Control panel items are marked onthe inner back panel in the controlpanel. Figure 7 illustrated below,identifies these devices. The ControlPanel Devices table corresponds tothe same device designators (seeright hand column). Optionalcontrols are present when a specificoptional controls package isspecified, as listed in the secondcolumn. Optional controls packages



Low voltage entrances (less than 30 VAC)

Control wiring (120 VAC)

Separate low voltage fieldwiring from 120 VACcontrol wiring

Note: UCP control wiring (120 VAC) must not be routed with lowvoltage circuits (less than 30 VAC). Conduit access holes are furnishedin the top of the unit control panel. Use the left holes for low voltagewiring, and use center and right hand holes for control (120 VAC)wiring.

*Note: The wire is retained in the clamp by the force of the springwhich pushes the wire against the connecting bar. Use care toensure full insertion of screwdriver into terminal block wire releasemechanism. Proper tool engagement is required to release thetension for wire insertion.

Figure 6

are; OPST Operating Status, GBASGeneric Building Systems, EXOPExtended operation, CDRPCondenser Pressure, TRMM Tracercommunications, WPSR Water FlowPressure sensing, FRCL FreeCooling, HGBP Hot Gas Bypass , andEPRO Enhanced Protection

Figure 20 illustrates the ControlPanel Components Layout.

Modules 1A1, 1A3, 1A4, 1A5, 1A6,1A7, and 1A13 are standard andpresent in all configurations. OtherModules vary depending onmachine optional devices.

19CVHE-SVN03C-EN



Figure 7. Control panel components layout

CVHE-SVN03C-EN20


Figure 8. Illustrates communication/control network to chiller units with CH530

21CVHE-SVN03C-EN

Wiring Drawings

Schematic Wiring Drawings

The following pages consist oftypical wiring drawings for an CVHE,CVHF or CVHG chiller. However,please refer to the submittals anddrawings that actually shipped withthe unit.

Refer to the chiller operation andmaintenance manual for an exampleof a typical sequence of operation fora Unit Mounted Wye-Delta Starter.

In the starter drawings, shown in thismanual, all starter variables are thesame in the Sequence of Operationexcept the Maximum AccelerationTime.

Table 5 provides a listing of includedschematics, connection diagramsand field wiring drawings to follow.

Table 5 also shows variables of theMaximum Acceleration Time for allstarter drawings in this manual.

Table 5 . Wiring addendum

MaximumDrawing Acceleration

Type of Drawing Number Time (seconds)Field Wiring Layout Drawings Page #Legend (Unit Mounted Wye-Delta Starter) 2309-4922-D – 68-69Unit Mounted Wye-Delta Starter 2309-4902-D 27 22-23Unit Mounted Solid-State Starter 2309-4904-D 15 26-27Unit Mounted Across-the-Line 2309-4906-D 6 30-31Unit Mounted Adaptive Frequency Drive 2309-4912-E 30 38-39Remote Wye-Delta Starter 2309-4903-D 27 24-25Remote Mounted Solid-State Starter 2309-4905-D 15 28-29Remote Across-the-Line Starter 2309-4909-E 6 32-33Remote Primary Reactor Starter 2309-4910-E 11 34-35Remote Auto Transformer Starter 2309-4911-E 11 36-37Customer Supplied Wye-Delta Starter 2309-4913-F 27 40-41Customer Supplied Primary Reactor andAuto Transformer Starter 2309-4914-F 11 42-43Customer Supplied Across-the-Line Starter 2309-4915-F 6 44-45Customer Supplied Solid-State Starter 2309-4916-F 20 46-47Purge Schematic 2309-4917-D – 48-49Unit Controls Schematic 2309-4919-E – 50-51System Controls Schematic 2309-4920-E – 52-53Options Schematic 2309-4921-D – 54-55Connection DiagramsStandard Connection Diagram Panel with Options 2309-4923-E – 56-57Field Connection Trane Starter 2309-4935-E – 58-59Customer Supplied Starter 2309-4936-E – 60-61Unit Wiring – Standard 2309-4937-E – 62-63Unit Wiring – Optional 2309-4938-F – 64-65Purge Control Panel (Unit Mounted 2309-4939-D – 66-67

Note: These are typical drawings only. Refer to specific as-built schematics foractual unit drawings which represent the unit wiring as shipped.

CVHE-SVN03C-EN22

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27CVHE-SVN03C-EN

CVHE-SVN03C-EN28

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TraneA business of American Standard Companieswww.trane.com

For more information contact your local districtoffice or e-mail us at [email protected]

Trane has a policy of continuous product and product data improvement and reserves the right to changedesign and specifications without notice.Only qualified technicians should perform the installation and servicing of equipment referred to in thispublication.

Literature Order Number

File Number

Supersedes

Stocking Location

CVHE-SVN03C-EN

Inland

CVHE-SVN03C-EN-303

SL-RF-CVHE-CTV-SVN03C-EN-304