Trane RAUJ CAUJ 20 to 120 Tons Installation Manual

SAFETY WARNINGOnly qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating,

10 SS-SVX11H-ENUnit Dimensions & WeightsUnit ClearancesFigure 4, p. 10 illustrates the minimum operating and service clearances for either a sing

Maintenance100 SS-SVX11H-ENTable 34. 20-60 Ton unit compressor circuit breakers (460-575 volts)1A/ 2A 1B / 2BUnit Voltage Dial Setting20 Ton46057520.

MaintenanceSS-SVX11H-EN 101 Fuse Replacement DataFall Restraint - Condenser Section RoofThis unit is built with fall restraint slots located on unit t

Maintenance102 SS-SVX11H-ENMonthly MaintenanceAir Handling EquipmentBefore completing the following checks, turn the system control circuit switch 1S

MaintenanceSS-SVX11H-EN 103 1. Remove enough panels from the unit to gain safe access to coils..Important: Bridging between the main supports required

104 SS-SVX11H-ENWarranty and Liability ClauseCOMMERCIAL EQUIPMENT RATED 20 TONS AND LARGER AND RELATED ACCESSORIESPRODUCTS COVEREDThis warranty* is e

SS-SVX11H-EN 105 Wiring DiagramsNote: Published unit wiring diagrams (individual, separate diagrams for unitary product lines) are available via e-Lib

Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in creating and sustaining safe, com

Unit Dimensions & WeightsSS-SVX11H-EN 11 DimensionsFigure 5. 20-Ton air-cooled condensing unit4" CONDUIT MAIN POWER1 3/4" KO LOW VOLTAG

Unit Dimensions & Weights12 SS-SVX11H-ENFigure 6. 20-Ton air-cooled condensing unit (connections)VOLTAGE ACCESSCONTROL PANEL5/8" O.D.LIQUID

Unit Dimensions & WeightsSS-SVX11H-EN 13 Figure 7. 25- and 30-Ton air-cooled condensing unit1/2" X 4 KO (115V) 1 3/4" KO LOW VOLTAGE (30

Unit Dimensions & Weights14 SS-SVX11H-ENFigure 8. 25- and 30-Ton air-cooled condensing unit (connections)HOT GAS BYPASS (OPTIONAL)LIQUID LINE7/8&

Unit Dimensions & WeightsSS-SVX11H-EN 15 Figure 9. 40-Ton air-cooled condensing unit29 1/4"31 1/4"35 13/16"37 11/16"3 3/8"

Unit Dimensions & Weights16 SS-SVX11H-ENFigure 10. 40-Ton air-cooled condensing unit (connections)1 5/8" O.D.SUCTION LINECOMPRESSORSCOMPRESS

Unit Dimensions & WeightsSS-SVX11H-EN 17 Figure 11. 50-Ton air-cooled condensing unit29 1/4"31 1/4"35 13/16"37 11/16"3 3/8&quo

Unit Dimensions & Weights18 SS-SVX11H-ENFigure 12. 50-Ton air-cooled condensing unit (connections)COMPRESSORSCOILCOMPRESSORCOIL15/8" O.D. SU

Unit Dimensions & WeightsSS-SVX11H-EN 19 Figure 13. 60-Ton air-cooled condensing unit29 1/4"31 1/4"35 13/16"37 11/16"3 3/8&quo

© 2012 Trane All rights reserved SS-SVX11H-ENWarnings, Cautions and NoticesWarnings, Cautions and Notices. Note that warnings, cautions and notice

Unit Dimensions & Weights20 SS-SVX11H-ENFigure 14. 60-Ton air-cooled condensing unit (connections)COMPRESSORSCOILCOMPRESSORCOIL2 1/8" O.D. S

Unit Dimensions & WeightsSS-SVX11H-EN 21 Figure 15. 80-Ton air-cooled condensing unit29 1/4"31 1/4"35 13/16"37 11/16"3 3/8&quo

Unit Dimensions & Weights22 SS-SVX11H-ENFigure 16. 80-Ton air-cooled condensing unit (connections)1 1/8" O.D.LIQUID LINE2 1/8" O.D .SUC

Unit Dimensions & WeightsSS-SVX11H-EN 23 Figure 17. 100- and 120-Ton air-cooled condensing unit29 1/4"31 1/4"35 13/16"37 11/16"

Unit Dimensions & Weights24 SS-SVX11H-ENFigure 18. 100- and 120-Ton air-cooled condensing unit (connections)1 3/8"HOT GASBYPASS (OPTIONAL)1

Unit Dimensions & WeightsSS-SVX11H-EN 25 Figure 19. 20-Ton evaporator chillerNotes:Notes:THIS HEAT EXCHANGER IS INTENDED FOR INDOOR INSTALLATION O

Unit Dimensions & Weights26 SS-SVX11H-ENFigure 20. 25 and 30-Ton evaporator chillerNotes:THIS HEAT EXCHANGER IS INTENDED FOR INDOOR INSTALLATION

Unit Dimensions & WeightsSS-SVX11H-EN 27 Figure 21. 40-Ton evaporator chillerNotes:Notes:THIS HEAT EXCHANGER IS INTENDED FOR INDOOR INSTALLATION O

Unit Dimensions & Weights28 SS-SVX11H-ENFigure 22. 50 and 60-Ton evaporator chillerNotes:Notes:THIS HEAT EXCHANGER IS INTENDED FOR INDOOR INSTALL

Unit Dimensions & WeightsSS-SVX11H-EN 29 Figure 23. 80 and 120-Ton evaporator chillerNotes:Notes:THIS HEAT EXCHANGER IS INTENDED FOR INDOOR INSTAL

IntroductionSS-SVX11H-EN 3 IntroductionOverview of ManualNote: One copy of this document ships inside the control panel of each unit and is customer p

Unit Dimensions & Weights30 SS-SVX11H-ENTable 3. Typical unit weights and point loading data 20 - 120 Ton unitsWeight CG Locations Weight on isol

Unit Dimensions & WeightsSS-SVX11H-EN 31 Use spreader bars as shown in Figure 25. See installation manual or nameplate for unit weight. See instal

Unit Dimensions & Weights32 SS-SVX11H-ENUnit IsolationTo minimize unit sound and vibration transmission, one of the following installation method

Unit Dimensions & WeightsSS-SVX11H-EN 33 Table 6. Typical neoprene isolator selection & locationShipping WeightOperating WeightIsolator Part N

34 SS-SVX11H-ENInstallationFoundationIf the unit is installed at ground level, elevate it above the snow line. Provide concrete footings at each supp

InstallationSS-SVX11H-EN 35 • Install chiller piping drain with shutoff valve.• Install 1/2” x 14 NPT stainless steel or PVC plug in braze plate chill

Installation36 SS-SVX11H-EN• Install an outside air thermostat in series with the flow switch to stop or prevent the unit from operating below the re

InstallationSS-SVX11H-EN 37 Liquid Line Solenoid ValvesLiquid line isolation solenoid valves (one per refrigeration circuit) are required for refriger

Installation38 SS-SVX11H-ENAccess Valves (Ports)The access ports in the liquid line allows the unit to be charged with liquid refrigerant and is used

InstallationSS-SVX11H-EN 39 Suction Line PipingProper suction line sizing is required to guarantee that oil is returned to the compressor throughout t

4 SS-SVX11H-ENTable of ContentsModel Number Descriptions . . . . . . . . . . . . . . 6General Information . . . . . . . . . . . . . . . . . . . .

Installation40 SS-SVX11H-ENNote: If the liquid line riser exceeds 10 feet, refer to Tube Size and Component Selection, publication number SS-APG012-E

InstallationSS-SVX11H-EN 41 Typical Field-Installed EVP Chiller Evaporator Piping1. Install the TEV(s) directly to the unit liquid connection. See TEV

Installation42 SS-SVX11H-ENthe coil frosting is sensed. The compressor is allowed to operate when the coil temperature rises a few degrees above the

InstallationSS-SVX11H-EN 43 Final Refrigerant Pipe ConnectionsTo access the refrigerant pipe connections, remove the louvered side grills. These conde

Installation44 SS-SVX11H-ENNote: Use 40 to 45% silver brazing alloy (BAg-7 or BAg-28) on dissimilar metals. Use BCup-6 brazing alloy on copper to cop

InstallationSS-SVX11H-EN 45 system capacity. Proper water treatment must be determined locally and depends on the type of system and local water chara

Installation46 SS-SVX11H-ENBPHE). A field provided blow down valve (recommended) or plug must be installed in strainer cleanout if not present.Chille

InstallationSS-SVX11H-EN 47 heat exchanger are also useful for EVP chiller service and shutdown.Water Pressure Gauges. Install pressure gauge(s) to mo

Installation48 SS-SVX11H-ENNotes: 1. Shutoff valves are required for evaporator servicing. 2. Evaporator is shown for illustration purposes only. 3.

InstallationSS-SVX11H-EN 49 Main Unit Power WiringTable 12, p. 49 lists the field connection wire ranges for both the main power terminal block 1TB1 a

SS-SVX11H-EN 5 Adding Preliminary Charge . . . . . . . . . . . 86Compressor Start-Up (All Systems) . . . . 86Pressure Curves . . . . . . . . . .

Installation50 SS-SVX11H-ENTo correctly size the main power wiring for the unit, use the appropriate calculation(s) listed below. Read the load defin

InstallationSS-SVX11H-EN 51 Table 14. Electrical service sizing data (20-60 Ton units) Unit Characteristics Condenser Fan Motor Compressor MotorModelE

Installation52 SS-SVX11H-ENField Installed Control WiringBefore installing any connecting wiring, refer to Figure 5, p. 11 to Figure 18, p. 24 for th

InstallationSS-SVX11H-EN 53 • Chilled water flow switch wiring (EVP units);• Outside air thermostat wiring (EVP units);• Liquid line solenoid valve(s)

Installation54 SS-SVX11H-ENControls using DC Analog Input/OutputsBefore installing any connecting wiring between the unit and components utilizing a

InstallationSS-SVX11H-EN 55 No System ControlTemperature Control ParametersEach unit ordered with the “No Controls” option, requires a field provided

Installation56 SS-SVX11H-ENFigure 39. Field connection diagram RAUJ20-60 - no system control2307-9122

InstallationSS-SVX11H-EN 57 Figure 40. Field connection diagram notes - RAUJ 20-60 - all system controls

Installation58 SS-SVX11H-ENFigure 41. Field connection diagram RAUJ80-120 - no system control2307-9144

InstallationSS-SVX11H-EN 59 Figure 42. Field connection diagram notes - RAUJ 80-120 - all system controls21 ISOLATION LIQUID SOLENOID VALVES (6L1, 6L3

6 SS-SVX11H-ENModel Number Descriptions20 to 60-Ton Units1DIGIT 1 — UNIT TYPER = Condensing UnitDIGIT 2 — CONDENSERA = Air CooledDIGIT 3 — AIRFLOWU =

Installation60 SS-SVX11H-ENVariable Air Volume Control (Honeywell W7100A)In a variable air volume system, the desired space temperature is maintained

InstallationSS-SVX11H-EN 61 Refer to wiring notes on Figure 42, p. 59.Figure 44. Field connection diagram RAUJ80-120 - variable air volume control2307

Installation62 SS-SVX11H-ENDischarge Air Sensor (Honeywell 6RT3 or Honeywell 8RT3) Discharge Air SensorEach unit ordered with variable air volume con

InstallationSS-SVX11H-EN 63 Night SetbackIf night setback operation is desired, connect a set of normally open contacts (field provided) to the approp

Installation64 SS-SVX11H-ENRefer to wiring notes on Figure 40, p. 57.Figure 47. Field connection diagram - RAUJ-C20-60 - EVP chiller applications2307

InstallationSS-SVX11H-EN 65 See wiring notes on Figure 42, p. 59..A ground wire must be installed between the EVP remote panel and the unit control pa

Installation66 SS-SVX11H-ENFor 40 through 60 Ton units, requiring four (4) stages of operation, a 402 ohm resistive jumper must be installed across

InstallationSS-SVX11H-EN 67 Refer to wiring notes on Figure 40, p. 57.Figure 49. Field connection diagram - RAUJ-20-60 constant volume control applica

Installation68 SS-SVX11H-ENElectronic Zone Thermostat (Honeywell T7067)Each unit ordered with constant volume controls (in the model number) is shipp

InstallationSS-SVX11H-EN 69 Discharge Air Sensor (Honeywell 6RT1)A discharge air sensor ships with each unit when the constant volume control option i

SS-SVX11H-EN 7 General InformationUnit InspectionAs soon as the unit arrives at the job site• Verify that the nameplate data matches the data on the s

70 SS-SVX11H-ENSystem Pre-Start ProceduresUse the checklist provided below in conjunction with the “General Unit Requirement” checklist” to ensure th

System Pre-Start ProceduresSS-SVX11H-EN 71 The lines used to connect pump to the system should be copper and the largest diameter that can practically

System Pre-Start Procedures72 SS-SVX11H-ENDischarge Air Controller Checkout (Honeywell W7100A)Note: The following checkout procedure must be performe

System Pre-Start ProceduresSS-SVX11H-EN 73 20. Turn the control circuit switch 1S2, in the unit control panel, and the main power disconnect switch to

System Pre-Start Procedures74 SS-SVX11H-ENfor the condensing unit and the control circuit switch 1S2, in the unit control panel, is “OFF”.2. Verify t

System Pre-Start ProceduresSS-SVX11H-EN 75 11. At the Chilled Water Controller, use a digital voltmeter to verify there is 24 volts AC across terminal

System Pre-Start Procedures76 SS-SVX11H-ENInsulate the wires with tape to prevent shorting or grounding during control checkout.4. Close the main pow

System Pre-Start ProceduresSS-SVX11H-EN 77 Discharge Air Sensor Checkout (Honeywell 6RT1) Available Only For 20 - 60 Ton Units1. Turn the control circ

System Pre-Start Procedures78 SS-SVX11H-EN• VD (reading farthest from average) = 221The percentage of Imbalance equals:• 100 x[(226 - 221)/226)] = 2.

SS-SVX11H-EN 79 Operating PrincipalsVAV W7100A Discharge Air Controller (7U11) The discharge air controller used in Variable Air Volume applications i

General Information8 SS-SVX11H-ENOn 80-120 Ton units, the CSHN*** compressors come equipped with a compressor protection device capable of detecting

Operating Principals80 SS-SVX11H-ENChilled Water Temperature Controller (6U11)The chilled water temperature controller used with EVP chiller applicat

Operating PrincipalsSS-SVX11H-EN 81 Condenser FansCondenser fan cycling is accomplished through interlocking fan contactors with a combination of comp

Operating Principals82 SS-SVX11H-ENLow Ambient DampersLow Ambient Dampers are available as a factory installed option or can be field-installed. Damp

SS-SVX11H-EN 83 Start-UpLow Ambient Damper Adjustment (Factory or Field Installed)When a unit is ordered with the low ambient option (i.e., Digit 11 i

Start-Up84 SS-SVX11H-EN5. Turn the main power disconnect switch or circuit protector switch for the unit to the “On” position.6. Turn the field provi

Start-UpSS-SVX11H-EN 85 Information in Table 22, p. 85 is approximate and intended to simplify field adjustment by presetting valves to approximately

Start-Up86 SS-SVX11H-ENAdding Preliminary Charge1. Leak check must be completed and system evacuated.2. Verify that oil levels are near or above the

Start-UpSS-SVX11H-EN 87 8. Switch the field supplied unit disconnect "OFF". Open the unit control box and plug in the reset relay (1K21 or 1

Start-Up88 SS-SVX11H-ENi. Turn the field supplied disconnect switch or circuit protector switch that provides power to the condensing unit to the “Of

Start-UpSS-SVX11H-EN 89 f. Subtract the total charge already added from the Table 24, p. 91 charge estimate for condensing unit at the appropriate pip

General InformationSS-SVX11H-EN 9 Figure 2. Component layout and ‘ship-with’ locations 20 - 60T units(a)(a) 60T unit shownCondenserCoilAccessPanelsLif

Start-Up90 SS-SVX11H-ENl. If in step 9. the fan pressure control switches were disabled to allow for charging below 80°F outdoor temperature, disconn

Start-UpSS-SVX11H-EN 91 Compressor Crankcase Heaters7.5 thru 15 Ton CSHD compressors use one 90-watt heater per compressor. 15 and 20 Ton CSHN compres

Start-Up92 SS-SVX11H-ENPressure CurvesTo Check Operating Pressures1. Start the unit and allow the pressures to stabilize.2. Measure the outdoor air d

Start-UpSS-SVX11H-EN 93 Figure 67. 25 Ton cooling cycle pressure curve(a)(a) All compressors and condenser fans runningFigure 68. 30 Ton cooling cycle

Start-Up94 SS-SVX11H-ENFigure 71. 60 Ton cooling cycle pressure curve(a)(a) All compressors and condenser fans runningFigure 72. 80 Ton cooling cycle

Start-UpSS-SVX11H-EN 95 Final System SetupAfter completing the Pre-start and Start-up procedures outlined in the previous sections, perform these fina

Start-Up96 SS-SVX11H-EN• Turn the 115 volt control circuit switch 1S2 “Off” and program the Night Setback (NSB) panel (if applicable) for proper unoc

SS-SVX11H-EN 97 Maintenance Compressor Operational SoundsThe following discussion describes some of the operational sounds of Trane R-410A scroll comp

Maintenance98 SS-SVX11H-ENImportant: Do not spill compressor oil. Refrigerant oil is detrimental to some roofing materials. Care must be taken to pro

MaintenanceSS-SVX11H-EN 99 Note: Always replace gasket when reassembling oil equalizer lines.Electrical Phasing: It is very important to review and f