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Trane R Series Installation Operation & Maintenance

Air-cooled helical rotary liquid chillers
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Table of Contents

Installation
Operation
Maintenance
Series R Air-Cooled Helical Rotary
Liquid Chillers
RTAC Plus 140 - 350 Ton (60 Hz)
RTAC Plus 140 - 300 Ton (50 Hz)
SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and
servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific
knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person
could result in death or serious injury. When working on the equipment, observe all precautions in the
literature and on the tags, stickers, and labels that are attached to the equipment.
RTAC-SVX002A-EN
May 2014

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Summary of Contents for Trane R Series

  • Page 1 Installation Operation Maintenance Series R Air-Cooled Helical Rotary Liquid Chillers RTAC Plus 140 - 350 Ton (60 Hz) RTAC Plus 140 - 300 Ton (50 Hz) SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.

  • Page 2: Table Of Contents

    Contents I- Model Number II-General Information III-Installation Mechanical IV-Installation Electrical V-Operating Principles VI-Controls Interface VII-Diagnostics VIII-Pre-Start Checkout IX-Unit Start-Up Procedures X-Periodic Maintenance XI-Maintenance Procedures XII-Wiring Diagram XIII-Standard Conversion Table RTAC-SVX002A-EN...

  • Page 3: I-Model Number

    I-Model Number R T A C 3 5 0 J B A 0 N N 0 F N N A T Y 2 N D C N N 0 N N 1 0 N N 0 P N N 0 0 0 0 N Digits 1, 2 - Unit Model Digit 18 - Condensador Fin Material Digit 30 - Service Valve...

  • Page 4: Ii-General Information

    See unit nameplate for refrigerant type. Do CAUTION: Indicates potentially • Notify the Trane sales representative non-approved refrigerants, hazardous situation which, and arrange for repair. Do not repair the refrigerant substitutes, or refrigerant...
  • Page 5 ASME standards motor starter. The RTAC series features or other international codes. Each Trane’s exclusive Adaptive Control evaporator is fully insulated and is ™ logic, which monitors the control...
  • Page 6 General Information Fig. II-02 – The photographs below show the RTAC in two views. RTAC-SVX002A-EN...
  • Page 7 General Information Tab. II-01 - General data — 140-350 ton 60 Hz units - standard efficiency Size Type Compressor Quantity Nominal Size Tons 70/70 85/70 85/85 100/85 100/100 120/100 120/120 85-85/100 100-100/100 120-120/100 Evaporator (gallons) Water storage (liters) 2 pass arrangement (gpm) Minimum flow (l/s)
  • Page 8 General Information Tab. II-02 - General data — 140-400 ton 60 Hz units - high efficiency Size Type HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH Compressor Quantity Nominal Size Tons 70/70 85/70 85/85 100/85 100/100 120/100 120/120 85-85/100 100-100/100 Evaporator (gallons)
  • Page 9 General Information Tab. II-03 - General data — 140-400 ton 50 Hz units - standard efficiency Size Type Compressor Quantity Nominal Size Tons 70/70 85/70 85/85 100/85 100/100 70-70/100 85-85/100 100-100/100 85-85/85-85 Evaporator Water Storage (gallons) (liters) 2 Pass arrangement (gpm) Min.
  • Page 10 General Information Tab. II-04 - General data — 140-400 ton 50 Hz units - high efficiency Size Type HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH Compressor Quantity Nominal Size Tons 70/70 85/70 85/85 100/85 100/100 70-70/100 85-85/100 100-100/100 Evaporator Water Storage (gallons) (liters)
  • Page 11 General Information Identification Tag The RTAC iditification tags are fixed on external control panel surface. The compressors tags are fixed on compressor. An exemple of tag is shown below. Fig. II-03 – Etiquetas de identificación RTAC-SVX002A-EN...
  • Page 12 General Information RTAC-SVX002A-EN...
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  • Page 14 General Information RTAC-SVX002A-EN...
  • Page 15 General Information RTAC-SVX002A-EN...
  • Page 16 General Information RTAC-SVX002A-EN...
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  • Page 18 General Information RTAC-SVX002A-EN...

  • Page 19: Iii-Installation Mechanical

    Outdoor Unit Nameplate The outdoor unit nameplate provides the following information: – Unit model and size description. – Unit serial number. – Identifies unit electrical requirements. – Lists correct operating charges of R-134a refrigerant (Trane RTAC-SVX002A-EN...
  • Page 20 (CG) dimensions. refrigerant charge is intact. If it is not, contact a qualified service organization and the appropriate Trane sales office. 3. Close the discharge and liquid line isolation valves. General Report any damage incurred during handling or installation to the Trane sales office immediately.
  • Page 21 Installation Mechanical Fig. III-02 – Lifting the Unit (Package and Remote) 30-36-foot Base Control Panel W1 - Near Side W3 - Near Side W5 - Near Side W2 - Far Side W4 - Far Side W6 - Far Side Back View Side View 1.
  • Page 22 Installation Mechanical Tab. III - 01 – Aluminum fin unit weights (60 Hz units) Operating Shipping Weight Weight Unit Size 2423 2794 2602 2933 10995 10752 RTAC 140 STD 1099 1267 1180 1330 4987 4877 2235 1143 2426 2800 2610 2943 11057 10780...
  • Page 23 Installation Mechanical Tab. III - 02 – Aluminum fin unit weights (50 Hz units) Operating Shipping Weight Weight Unit Size 2423 2794 2602 2933 10995 10752 RTAC 140 STD 1099 1267 1180 1330 4987 4877 2235 1143 2426 2800 2610 2943 11057 10780...
  • Page 24 Sound power vibration eliminators. Spring isolators reduce sound transmitted levels for Trane air-cooled Series R® are not recommended. Consult an through electrical conduit, use flexible chillers are available on request. acoustical engineer in critical sound electrical conduit.
  • Page 25 1/ 4" (6 mm) over its sufficient clearance for the opening of length and width. control panel doors. Refer to Figure The Trane Company is not responsible 18 through Figure 19 for minimum for equipment problems resulting from clearances. In all cases, local codes...
  • Page 26 Installation Mechanical Fig. III-06 – Recommended Unit Clearances 18-21 foot bases Fig. III-07 – Recommended Unit Clearances 30-45 foot bases RTAC-SVX002A-EN...
  • Page 27 Consult your Trane sales engineer for more details. Evaporator Water Piping NOTE: If the outdoor unit configuration...
  • Page 28 Follow manufacturer’s ts from water born debris. Trane recommendations for selection and is not responsible for equipment- installation procedures. General...
  • Page 29 Installation Mechanical Evaporator Water Pressure Drop RTAC 140 - 250 Ton Fig. III-08 – Evaporator Water Pressure Drop 250S, 200H, 225H, 250H (60Hz) 225S, 185H 200S, 170H 185S, 155H 170S, 140H 155S 140S 1000 Flow Rate (GPM) Fig. III-09 – Evaporator Water Pressure Drop 100,0 275 S 250 H (50 Hz), 300 S...
  • Page 30 Trane assumes no agua para determinar si es necesario should be engaged to determine what responsibility for equipment failures tal tratamiento. La siguiente etiqueta treatment, if any, is advisable. The...
  • Page 31 CAUTION must be calculated by engineering: Shell Damage! ALL unit chilled water pumps must be controlled by the Trane CH530 to Freeze inhibitor other than To prevent shell damage, install avoid catastrophic damage to the Ethylene Glycol or Propylene Glycol.
  • Page 32 Operation is not recommended at certain operating conditions as some chillers may not satisfy maximum or minimum velocity requirements or minimum performance requirements. Contact Trane Sales Representative for more information regarding the operating limits of a particular chiller. Tab. III-04 – Recommended Low Evaporator Refrigerant Cutout and % Glycol...

  • Page 33: Iv-Installation Electrical

    For variable frequency drives other energy storing components provided Trane or others, refer to the appropriate manufacturer’s literature allowable waiting periods discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury.
  • Page 34 Trane field wiring diagrams and as stated on or others, refer to the appropriate the WARNING label in the starter panel. manufacturer’s literature For additional information on proper...
  • Page 35 Installation Electrical volt field-provided connections (either control or power) are made through knockouts on the lower left side of the panel. Additional grounds may be required for each 115 volt power supply to the unit. Green lugs are provided for 115V customer wiring.
  • Page 36 Installation Electrical Fig. IV-02 – Startup Panel Channel Control Panel for the Low Temperature option RTAC 140-350. RTAC-SVX002A-EN...
  • Page 37 IMPORTANT: ALL unit chilled water temperature drops to approximately pumps must be controlled by the 37°F (2.8°C), the thermostat energizes Trane CH530 to avoid catastrophic the heaters. The heaters will provide damage to the evaporator due to protection from ambient temperatures freezing.
  • Page 38 Installation Electrical Tab. IV-01 – Pump Relay Operation Chiller Mode Relay Operation Auto Instant close Ice Building Instant close Tracer Override Close Stop TImed Open Ice Complete Instant Open Diagnostics Instant Open NOTE: Exceptions are listed below. Alarm and Status Relay Outputs (Programmable Relays) When going from Stop to Auto, the EWP relay is energized immediately.
  • Page 39 Installation Electrical Tab. IV-02 – Pump Relay Operation Chiller Mode Relay Operation Alarm - Latching This output is true whenever there is any active diagnostic that requires a manual reset to clear, that affects either the Chiller, the Circuit, or any of the Compressors on a circuit. This classification does not include informational diagnostics.
  • Page 40 Installation Electrical Tab. IV-03 – Pump Relay Operation Relay 1 Terminals J2 -12,11,10: Alarm Relay 2 Terminals J2 - 9,8,7: Chiller Running Relay 3 Terminals J2-6,5,4: Maximum Capacity (software 18.0 or later) Relay 4 Terminals J2-3,2,1: Chiller Limit If any of the Alarm/Status relays are To prevent control malfunctions, do not used, provide electrical power, 115 VAC run low voltage wiring (<30 V) in conduit...
  • Page 41 Installation Electrical Silver gold-plated contacts Termination setpoint being reached or recommended. These customer- removal of the Ice Building command. furnished contacts must be compatible This output is for use with the ice with 24 VDC, 12 mA resistive load. storage system equipment or controls (provided by others) to signal the External Auto/Stop system changes required as the chiller...
  • Page 42 Installation Electrical External Chilled Water Setpoint permit the ice building mode to be reentered until the unit has been (ECWS) Option switched out of ice building mode (open CH530 provides inputs that 5K18 contacts) and then switched back accept either 4-20 mA or 2-10 VDC into ice building mode (close 5K18 signals to set the external chilled contacts.)
  • Page 43 Installation Electrical If the ECLS input develops an open ECLS can be connected and setup as or short, the LLID will report either a either a 2-10 VDC (factory default), very high or very low value back to the 4-20 mA, or resistance input (also a man processor.
  • Page 44 Installation Electrical • Start Reset Set Points. where • Maximum Reset Set Points. CWS’ is the new chilled water set point or the “reset CWS” The equations for each type of reset are as follows: CWS is the active chilled water set point before any reset has occurred, Return e.g.
  • Page 45 • Termination resistors are required between buildings. – 105 ohms at each end for Level 4 wire • All units on the communication – 82 ohms at each end for Trane link can be connected in a “daisy “purple” wire chain”configuration.
  • Page 46 Installation Electrical El cableado en campo para el link de 2. El cableado del link de comunicación comunicación debe responder a los debe ser con un par trenzado siguientes requisitos: blindado (Belden 8760 o equivalente). Ver la siguiente tabla para seleccionar 1.
  • Page 47 Installation Electrical Tab. IV-08 Unit electrical data for standard efficiency at all ambient operation Unit Wiring Motor Data Compressor (Each) Fans (Each) Max. fuse HACR Rec. Time rec. # of Power Breaker or delay or RDE(4) Control Rated MCA (3) RLA (5) XLRA (8) YLRA (8)
  • Page 48 Installation Electrical Tab. IV-09 Unit electrical data for high efficiency at standard ambient operation Unit Wiring Motor Data Compressor (Each) Fans (Each) Max. fuse HACR Rec. Time rec. # of Power Breaker or delay or RDE(4) Control Rated MCA (3) RLA (5) XLRA (8) YLRA (8)
  • Page 49 Installation Electrical Fig. IV-04 – Arbitration flowcharts of chilled water configuration (Auto Local) Auto Remote Auto Local External Enabled Disabled Setpoint Outdoor Air or Valid Signal Return Reset Outdoor Air or Outdoor Air or Return Reset Return Reset Enabled Disabled or Failed Reset Reset EasyView...
  • Page 50 Installation Electrical Fig. IV-05 – Arbitration flowcharts of chilled water configuration (Auto remote) Auto Remote Auto Local External Enabled Disabled Setpoint Outdoor Air or Return Reset Valid Signal Outdoor Air or Outdoor Air or Disabled or Return Reset Return Reset Failed Enabled Online...
  • Page 51 Installation Electrical Fig. IV-06 – Arbitration flowcharts of Current limit setting Auto Remote Auto Local External external SP Setpoint disabled enabled Enabled Valid Signal Valid Signal On Line Disabled Out of Range Out of Range Off Line or Failed On Line Limit Limit Use BAS...
  • Page 52 Installation Electrical Fig. IV-07 – Arbitration flowcharts of configuration points Auto/Stop External DynaView or Stop EasyView Auto Stop External Auto/Stop Auto Auto Local or Comm Loss (use defaults)** On-Line Run if Auto Remote switch is set in Run only if TechView and Tracer load exists Stop...
  • Page 53 Installation Electrical Fig. IV-08 – Arbitration flowcharts of configuration points of locking circuit Ice Making Input installed and enabled Making Input DynaView or Lock Service tool Key BAS Remote Lock Off-line or Comm Fail Auto Local Circuit Lock Lock Running mode Assigned circuit as determined with the lock...
  • Page 54 Installation Electrical Fig. IV-09 – Arbitration flowcharts of Control of Ice manufacturing Auto BAS Switch Local Ice Making Off-Line or Comm Fail Input installed and Enabled Auto Remote Ice Making Input Normal On-Line Ice Mode Running mode as determined by Ice Making Mode EasyView or DynaView...

  • Page 55: V-Operating Principles

    V-Operating Principles Tab. V-01 – LonTalk Points List LonTalk Communications Interface Inputs Variable type SNVT_Type Chiller Enable/Disable binary start(1)/stop(0) SNVT_switch Chilled Water Setpoint analog temperature SNVT_temp_p Current Limit Setpoint analog % current SNVT_lev_percent Chiller Mode Note 1 SNVT_hvac_mode Outputs Variable type SNVT_Type Outputs Variable type...
  • Page 56 The compressor is a twin-rotor helical and tube air cooled heat exchanger rotary compressor designed similarly to where refrigerant is condensed in the the compressors offered in other Trane tube (states 2b to 3b). Refrigerant flow Screw Compressor Based...
  • Page 57 Operating Principles Fig. V-02 – System Schematic RTAC-SVX002A-EN...
  • Page 58 The unit controller Important! The RTAC units must only (CH530) uses the valve to regulate the operate with R-134a and Trane Oil flow through the liquid line to match Condenser and Subcooler 00048. the flow produced by the compressor.
  • Page 59 Operating Principles Evaporator Oil System The evaporator is composed of a Screw compressors require large liquid-vapor distributor and falling film quantities of oil for lubricating and evaporator. sealing rotors lubricating bearings. This mixed A liquid-vapor refrigerant mixture enters with refrigerant at the discharge of the distributor (state 4).
  • Page 60 Operating Principles Operating Principles Oil that gets past the oil separators flows through the condenser, subcooler and Oil that gets past the oil separators flows through the condenser, subcooler and expansion valve into the evaporator. This oil is collected in the pool of refrigerant expansion valve into the evaporator.

  • Page 61: Vi-Controls Interface

    CH530 Communications Overview The CH530 uses the IPC3 protocol based on RS485 signal technology The Trane CH530 control system that and communicating at 19.2 Kbaud to runs the chiller consists of several allow 3 rounds of data per second on elements: a 64-device network.
  • Page 62 Controls Interface Fig. VI-01 DynaView Key Functions Spin Value Buttons In this touch screen application, key Spin values are used to allow a variable functions are determined completely setpoint to be changed, such as leaving by software and change depending water setpoint.
  • Page 63 Controls Interface Its tab, thereby making it look like a part of the current folder (as would an open folder in a file cabinet). The user selects a screen of information by touching the appropriate tab. Display Screens Basic Screen Format The basic screen format appears as: The file folder tabs across the top of the Display) is present in all screens and...
  • Page 64 Controls Interface The ALARMS button appears only when an alarm is present, and blinks (by alternating between normal and reverse video) to draw attention to a diagnostic condition. Pressing the ALARMS button takes you to the corresponding tab for additional information. Front Panel Lockout Feature Enter Password to Unlock NOTE: The DynaView display and...
  • Page 65 Controls Interface Chiller Screen The chiller screen is a summary of the chiller activity. Tab. VI-01 - Chiller Screen Description Resolution Units Evap Leaving Water Temperature F / C Evap Entering Water Temperature F / C Active Chilled Water Setpoint F / C Active Current Limit Setpoint % RLA...
  • Page 66 Controls Interface Each compressor has its own screen depending on which radio key is pressed. When toggling between compressor screens, say to compare starts and run time, the same lines can be seen without additional key strokes. For example, toggling from the bottom of the compressor 1A menu accesses the top of the compressor 2A menu.
  • Page 67 Controls Interface Tab. VI-03 - Refrigerant Screen Description Resolution Units Cond Rfgt Pressure Ckt1/Ckt2 Pressure Sat Cond Rfgt Temp Ckt1/Ckt2 F / C Evap Rfgt Pressure Ckt1/Ckt2 Pressure Sat Evap Rfgt Temp Ckt1/Ckt2 F / C Evap Approach Temp Ckt1/Ckt2 F / C Rfgt Liquid Level Ckt1/Ckt2 Height...
  • Page 68 Controls Interface Tab. VI-05 - Setpoint Screen Description Resolution or Text Units Comp 1A Pumpdown Pumpdown/Abort Text Comp 1B Pumpdown Pumpdown/Abort Text Comp 2A Pumpdown Pumpdown/Abort Text Comp 2B Pumpdown Pumpdown/Abort Text EXV Ckt 1 Open Auto/Open Text EXV Ckt 2 Open Auto/Open Text Front Panel Ckt 1 Lockout...
  • Page 69 Controls Interface consistent with the circuit to which they belong. One circuit not operating will not shut the chiller down. Viewing the “Compressor” screen will indicate whether a circuit is not operating and for what reason. A complete listing of diagnostics and Display Formats codes is included in the Diagnostic Units...
  • Page 70 Controls Interface Active Chilled Water Subscreen The active chilled water setpoint is that setpoint to which the unit is currently controlling. It is determined by the front panel, Tracer, or external setpoints, which in turn may be subject to a form of chilled water reset. The chilled water reset status area in Active Current Limit Setpoint the right most column will display one of...
  • Page 71 Controls Interface Active Current Limit Subscreen The active current limit setpoint is that setpoint to which the unit is currently controlling, based on the front panel, Tracer, or external setpoints. The left column text “Front Panel”, “BAS”, “External”, and “Active Current Limit Setpoint”...
  • Page 72 Controls Interface Refrigerant Screen The refrigerant screen displays those aspects of the chiller related to the refrigerant circuits. All pressures are displayed to 0.1 psig or 1 kPa. Condenser Refrigerant Pressure Evaporator Refrigerant Temperature Circuit 1 and 2 Circuit 1 and 2 DynaView always displays all pressures The main processor will calculate and (English or SI) as gauge pressures.
  • Page 73 Controls Interface The refrigerant liquid level is displayed relative to the optimum liquid level control point inside the evaporator shell. The liquid level sensors range is generally between -1.0 to +1.1 inches. If the display reads +1.0 of -1.0 inches, the liquid level may be higher or lower than this, respectively.
  • Page 74 Controls Interface This item displays the suction pressure Compressor Run Hours assocaited with the given compressor. Compressor running hours will be certain chillers, without suction rounded to the nearest hour, 0 to isolation valves installed, there will be 999,999. no suction pressure transducer directly associated with compressors 1B and Setpoint Screen 2B.
  • Page 75 Controls Interface Setpoint List Screen The following setpoints can be reviewed or changed: Enumerated Setpoints Subscreen This subscreen is activated by pressing one of the two radio keys: RTAC-SVX002A-EN...
  • Page 76 Controls Interface The remote devices identified on the following setpoint screen are discussed in the Electrical. Installation section of this manual. Tab. VI-07 – Setpoint Options/Conditions Displayed Option Condition(s) Explanation Ice Building Enable/Disable If future is installed, operation can be initiated or stopped. Cprsr Pumpdown Avail Pumpdown is allowed: only with unit in Stop or when circuit is locked out.
  • Page 77 Controls Interface Tab. VI-08 – Setpoint Subscreens – Table of Text, Data, Ranges, etc. Button Selections Setpoint Screen Title Resolution Setpoint Field Radio 1 Radio 2 Monitor Value Auto Local or Remote Remoto Local Front Panel CWS + o - XX.X Front Panel CLS Integer (4) Condenser Limit Stpt...
  • Page 78 Controls Interface The setpoint screen for setting up the CH530 date is shown below: Select Month, Day, or Year and then use the up/down arrows to adjust. The setpoint screen for setting up the CH530 time with a 12-hour format is shown below: Select Hour, Minute, or AM/PM and then use the up/down arrows to adjust.
  • Page 79 Tracer CH530 must use a laptop Fifth Screen, the Leaving Water Tem- running the software application “Tech- perature. View.” TechView is a Trane application developed to minimize chiller downtime Power-Up DynaView and aid the technicians' understanding On Power-Up, DynaView will progress...
  • Page 80 Environment, emGateway installation by a properly trained service techni- files and the MP software. These files cian. Please contact your local Trane should be stored in a folder named service agency for assistance with “CH530” so they are easy to locate.
  • Page 81 Controls Interface Connecting the Laptop to CH530 Criteria: Quantitatively defines the cri- Once the software is downloaded to the teria used in generating the diagnostic laptop, the laptop can be connected to and, if nonlatching, the criteria for auto any CH530 main processor to monitor reset.

  • Page 82: Vii-Diagnostics

    VII-Diagnostics Tab. VI-01 – Setpoints View Items Diagnostic Name and Severity Persistence Criteria Reset Level Code Source BAS Communication Lost Special NonLatch The BAS was setup as “installed” at the MP and the Comm 3 LLID lost Remote communications with the BAS for 15 contiguous minutes after it had been established.
  • Page 83 Diagnostics Diagnostic Name and Severity Persistence Criteria Reset Level Code Source Comm Loss: Evaporator Normal Latch Same as Comm Loss: Chilled Water Flow Switch Remote Water Pump Control Comm Loss: External Normal Latch Same as Comm Loss: Chilled Water Flow Switch Remote Remote Auto/ Stop Comm Loss: External...
  • Page 84 Diagnostics Diagnostic Name and Severity Persistence Criteria Reset Level Code Source Remote Comm Loss: Female Step Load Normal Latch Same as Comm Loss: Chilled Water Flow Switch Compressor 1B Comm Loss: Female Step Load Normal Latch Same as Comm Loss: Chilled Water Flow Switch Remote Compressor 2A Comm Loss: Female Step Load...
  • Page 85 Diagnostics Diagnostic Name and Severity Persistence Criteria Reset Level Code Source Comm Loss: Starter Panel Info Latch Same as Comm Loss: Chilled Water Flow Switch Local High Temperature Limit – Panel 1, Cprsr 2A Comm Loss: Starter Panel High Info Latch Same as Comm Loss: Chilled Water Flow Switch Local...
  • Page 86 Diagnostics Diagnostic Name and Severity Persistence Criteria Reset Level Code Source Evaporator Water Flow Normal NonLatch Evaporator water flow was not proven within 4.25 minutes (RTAC Remote Overdue Rev 20 and earlier) or 20 minutes (RTAC Rev 21) of the Chilled water pump relay being energized.
  • Page 87 Diagnostics Diagnostic Name and Severity Persistence Criteria Reset Level Code Source Intermediate Oil Pressure Immediate Latch Bad Sensor or LLID Remote Compressor 2A High Pressure Cutout – Immediate Latch Same as High Pressure Cutout - Compressor 1A Local Compressor 2B Intermediate Oil Pressure Immediate Latch...
  • Page 88 Diagnostics Diagnostic Name and Severity Persistence Criteria Reset Level Code Source Low Oil Flow – Compressor Immediate Latch Same as Low Oil Flow - Compressor 1A Local Low Oil Flow – Compressor Immediate Latch Same as Low Oil Flow - Compressor 1A Local Low Oil Flow –...
  • Page 89 Diagnostics Diagnostic Name and Severity Persistence Criteria Reset Level Code Source Oil Temperature Sensor – Normal Latch Bad Sensor or LLID Remote Cprsr 1A Oil Temperature Sensor – Normal Latch Bad Sensor or LLID Remote Cprsr 2A Outdoor Air Temperature Normal Latch Bad Sensor or LLID.
  • Page 90 Diagnostics Diagnostic Name and Severity Persistence Criteria Reset Level Code Source Starter 1A Dry Run Test Immediate Latch While in the Starter Dry Run Mode either 50 % Line Voltage was Local sensed at the Potential Transformers or 10 % RLA Current was sensed at the Current Transformers.
  • Page 91 Diagnostics Diagnostic Name and Severity Persistence Criteria Reset Level Code Source Starter Fault Type II – Immediate Latch a. This is a specific starter test where the Shorting Contactor (1K3) is Local Compressor 1A individually energized and a check is made to ensure that there are no currents detected by the CT's.
  • Page 92 Diagnostics Diagnostic Name and Source Severity Persistence Criteria Reset Level Code Transition Complete Input Immediate Latch The Transition Complete input was found to be opened with the Local Opened - Compressor 1A compressor motor running after a successful completion of transition. This is active only for YDelta, Auto-Transformer, Primary Reactor, and X- Line Starters.

  • Page 93: Viii-Pre-Start Checkout

    Unit Location and Mounting • Inspect the location desired for installa- energy storing components provided tion and verify adequate service access by Trane or others, refer to the appro- clearances. priate manufacturer’s literature for al- lowable waiting periods for discharge •...
  • Page 94 It is recommended that the other energy storing components services of a qualified water treat- provided by Trane or others, refer to ment specialist be engaged to deter- the appropriate manufacturer’s litera- mine what water treatment, if any, is ture for allowable waiting periods required.
  • Page 95 (221+230+227)/3 = 226 ter supplies to protect components The percentage of the imbalance is then: from water born debris. Trane is not [100(221-226)]/226 = 2.2% responsible for equipment-only-dam- This exceeds the maximum allowable age caused by water born debris.
  • Page 96 Flow rates that are too high can cause by Trane or others, refer to the appro- tube erosion in the evaporator. priate manufacturer’s literature for al- lowable waiting periods for discharge Water System Pressure Drop of capacitors.

  • Page 97: Ix-Unit Start-Up Procedures

    6. Verify that the chilled water pump runs Use only refrigerants specified on the for at least one minute after the chiller is unit nameplate (HFC 134a) and Trane commanded to stop (for normal chilled OIL00048. Failure to do so may cause water systems).
  • Page 98 Trane assumes no respon- 3. Close the vents in the evaporator sibility for equipment failures which chilled water circuits.
  • Page 99 Unit Start-Up Procedures – All system operating interlocks and safety circuits are satisfied. Extended Shutdown Procedure The following procedure is to be followed if the system is to be taken out of service for an extended period of time, e.g. sea- sonal shutdown: 1.

  • Page 100: X-Periodic Maintenance

    3. If liquid line sight glass has bubbles measure the subcooling entering the energy storing components provided EXV. by Trane or others, refer to the appro- The subcooling should never be less priate manufacturer’s literature for al- lowable waiting periods for discharge than 4 °F under any circumstances.
  • Page 101 Periodic Maintenance RTAC-SVX002A-EN...
  • Page 102 Periodic Maintenance Note: * Using Techview, click on "View" and then click "Setpoint View" Log accordingly. ** Using Techview, click on "View" and then click "Compressor Service View" Log accordingly. *** Using Techview, click on "View" and then click "Configuration" (Nameplate Tab) Log accordingly. RTAC-SVX002A-EN...
  • Page 103 Periodic Maintenance RTAC-SVX002A-EN...
  • Page 104 Periodic Maintenance RTAC-SVX002A-EN...

  • Page 105: Xi-Maintenance Procedures

    (due to high vapor velocity) energy storing components provided • High condenser + subcooler pressure by Trane or others, refer to the appro- priate manufacturer’s literature for al- drop Some symptoms of a refrigerant over-...
  • Page 106 NOTE: Proper subcooling can be deter- vacuum. mined from run log history, service expe- 6. Charge unit through the filter housing rience, or by contacting Trane technical port per Tables. service. 7. When charging is complete, shut evaporator service valve and disconnect Charge Isolation in the high or low vacuum and charging hoses.
  • Page 107 Maintenance Procedures Tab. XI-01 – Charge Holding Capabilities on High Side Nominal Nominal Circuit Condenser Charge Charge in Oil % Oil Separator Capacity Charge lb Holding Capacity Separator lb Level @ 60% full 90º ambient lb 118.1 46.9 97.7 134.3 40.7 86.0 163.7...
  • Page 108 8. Inspect replacement filter element and pressor. Too much oil lubricate o-ring with Trane OIL00048. will result in high oil circulation rates which will foul the condenser and evapo- NOTE: Do not use mineral oil. It will contaminate the system.
  • Page 109 Maintenance Procedures Fig. XI-01 – Oil System Schematic • Oil filter (internal to compressor) with Oil system consists of the following com- ponents: flare fitting service connection and • Compressor schrader valve • Oil separator • Oil flow control valve (internal to the compressor after the filter) •...
  • Page 110 “normal” conditions for a long time the level should resemble the - Equipment Damage! level in the above chart. (+1" to – 4" - Use only Trane OIL00048 (25 to -101mm) is acceptable.) the RTAC units to avoid any - The field...
  • Page 111 Maintenance Procedures Field Oil Charging Procedure pour oil into the filter housing. Use the initial charging procedure under 7. When oil comes out of the flare fitting the following circumstances: on the oil line shut off valve the filter is •...
  • Page 112 Maintenance Procedures CAUTION service valves, and trim charge as re- Evaporator Damage! quired. The tubes are rolled at both ends and in the center. When replacing tubes, take care to ensure that the tube is re- moved and rolled into the center tube sheet properly.

  • Page 113: Xii-Wiring Diagram

    XII-Wiring Diagram Fig. XII-01 – Wiring Diagram, M&L, Y-D, Circuit 1 RTAC-SVX002A-EN...
  • Page 114 Wiring Diagram Fig. XII-02 – Wiring Diagram, M&L, Y-D, Circuit 2 RTAC-SVX002A-EN...
  • Page 115 Wiring Diagram Fig. XII-03 – Wiring Diagram, 3&4 Length, Length 1A, Y-D RTAC-SVX002A-EN...
  • Page 116 Wiring Diagram Fig. XII-04 – Wiring Diagram, 3&4 Length, Length 1B, Y-D RTAC-SVX002A-EN...
  • Page 117 Wiring Diagram Fig. XII-05 – Wiring Diagram, 3 Length, Length 2A, Y-D RTAC-SVX002A-EN...
  • Page 118 Wiring Diagram Fig. XII-06 – Wiring Diagram, Fan, 3 Length, Length 2 RTAC-SVX002A-EN...
  • Page 119 Wiring Diagram Fig. XII-07 – Wiring Diagram, Fan, Medium, 140&155 Std RTAC-SVX002A-EN...
  • Page 120 Wiring Diagram Fig. XII-08 – Wiring Diagram, Fan, Medium, all others RTAC-SVX002A-EN...
  • Page 121 Wiring Diagram Fig. XII-09 – Wiring Diagram, Fan, Big (225&250 Prem) RTAC-SVX002A-EN...
  • Page 122 Wiring Diagram Fig. XII-10 – Wiring Diagram, Fan, 3&4 Length, Circuit 1, Low Voltage RTAC-SVX002A-EN...
  • Page 123 Wiring Diagram Fig. XII-11 – Wiring Diagram, Fan, 3&4 Length, Circuit 1, Hight Voltage RTAC-SVX002A-EN...
  • Page 124 Wiring Diagram Fig. XII-12 – Wiring Diagram, Fan, 3 Length, Circuit 1, 250T, 50Hz, Std RTAC-SVX002A-EN...
  • Page 125 Wiring Diagram Fig. XII-13 – Wiring Diagram, Control, M&L RTAC-SVX002A-EN...
  • Page 126 Wiring Diagram Fig. XII-14 – Wiring Diagram, Controls, 3&4 Length, Circuit 1 RTAC-SVX002A-EN...
  • Page 127 Wiring Diagram Fig. XII-15 – Wiring Diagram, Controls/Legend/Bus, 3 Length, Circuit 2 RTAC-SVX002A-EN...
  • Page 128 Wiring Diagram Fig. XII-16 – Wiring Diagram, Legend/LLID Bus, M&L RTAC-SVX002A-EN...
  • Page 129 Wiring Diagram Fig. XII-17 – Wiring Diagram, Legend/LLID Bus, 3&4 Length, Circuit1 RTAC-SVX002A-EN...
  • Page 130 Wiring Diagram Fig. XII-18 – Wiring Diagram, Fan, M&L, Inverters RTAC-SVX002A-EN...
  • Page 131 Wiring Diagram Fig. XII-19 – Location of Component, 2 Length RTAC-SVX002A-EN...
  • Page 132 Wiring Diagram Fig. XII-20 – Location of Component, 3 Length RTAC-SVX002A-EN...
  • Page 133 ALL FIELD WIRING MUST BE IN ACCORDANCE WITH THE NATIONAL ELECTRIC CODE AND STATE AND LOCAL REQUIREMENTS. FOLLOW LOCK OUT AND TAG PROCEDURES CAUTION-TRANE PUMP CONTROL MUST BE USED TO PROVIDED PUMP CONTROL. EVAPORATOR CHILLED WATER FAILURE TO DO SO MAY CAUSE DAMAGE TO THE EXPORT UNIT WIRING MUST COMPLY WITH LOCAL APPLICABLE CODES.
  • Page 134 ALL MOTORS ARE PROTECTED FROM PRIMARY SINGLE PHASE FAILURES. SHIELDED TWISTED PAIR LEADS CAUTION - TRANE PUMP CONTROL MUST BE USED TO PROVIDE PUMP CONTROL. EVAPORATOR CHILLED WATER PUMP MUST BE CONTROLLED BY THE CHILLER OUTPUT. FAILURE TO COMPLY WITH THIS REQUIREMENT UNIT OPERATION MAY RESULT IN DAMAGE TO THE UNIT.
  • Page 135 Wiring Diagram Fig. XII-22 – Field Layout, all - Part 2 WIRE SIZE RANGE FOR FACTORY PROVIDED LUGS FOR CUSTOMER POWER WIRING CONNECTIONS CIRCUIT BREAKER OPTION ELECTRICAL CIRCUIT 1 DUAL SOURCE POWER SINGLE SOURCE POWER ELECTRICAL CIRCUIT 1 & 2 ELECTRICAL CIRCUIT 2 DUAL SOURCE POWER VOLTAGE LUG WIRE SIZE RANGE...
  • Page 136 Wiring Diagram Fig. XII-23 – Field Layout, all RTAC-SVX002A-EN...

  • Page 137: Xiii-Standard Conversion Table

    XIII-Standard Conversion Table To convert from: Multiply By: To convert from: Multiply By: Length Velocity Feet (ft) meters (m) 0,30481 Feet per minute (ft/min) meters per second (m/s) 0,00508 Inche (in) milimeters (mm) 25,4 Feet per second (ft/s) meters per second (m/s) 0,3048 Area Energy, Power and Capacity...
  • Page 138 Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in creating and sustaining safe, comfortable and energy efficient environments, Trane offers a broad portfolio of advanced controls and HVAC systems, comprehensive building services, and parts.

This manual is also suitable for:

Rtac 140 seriesRtac 150 seriesRtac 170 seriesRtac 185 seriesRtac 200 seriesRtac 225 series ... Show all

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