Trane R Series Installation, Operation And Maintenance Manual
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Trane R Series Installation, Operation And Maintenance Manual

Trane R Series Installation, Operation And Maintenance Manual

Air-cooled helical rotary liquid chillers
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See also: Installation Operation & Maintenance
Installation, Operation,
and Maintenance
Series R Air-Cooled
Helical Rotary Liquid Chillers
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.
May 2012
SAFETY WARNING
RTAC-SVX01J-EN

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  • Page 1 Installation, Operation, and Maintenance Series R Air-Cooled Helical Rotary Liquid Chillers 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: Warnings, Cautions And Notices

    CFCs such as HCFCs and HFCs. Responsible Refrigerant Practices! Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified.The Federal Clean Air Act...
  • Page 3 Warnings, Cautions and Notices Trademarks WARNING Trane and theTrane logo are trademarks ofTrane in the Personal Protective Equipment (PPE) United States and other countries. All trademarks Required! referenced in this document are the trademarks of their respective owners. Installing/servicing this unit could result in exposure to electrical, mechanical and chemical hazards.

  • Page 4: Table Of Contents

    Table of Contents Warnings, Cautions and Notices ............2 Model Number Description .
  • Page 5 Low Evaporator Refrigerant Cutout, Glycol Recommendations ......53 Procedure ............... . . 53 Specials .
  • Page 6 Compressor ............... . . 106 Condenser and Subcooler .
  • Page 7 Water System Pressure Drop ............129 CH530 Set-Up .

  • Page 8: Model Number Description

    • Unit serial number. • Identifies unit electrical requirements. Compressor Nameplate • Lists correct operating charges of R-134a and refrigerant oil (Trane OIL00048). The compressor nameplate provides following information: • Lists unit test pressures. • Compressor model number. See “Compressor Model •...

  • Page 9: Unit Model Number

    Digit 9 — Manufacturing Digit 33 — Installation Digit 22 — Power Line Location Accessories Connection Type Trane Commercial Systems, No installation accessories Terminal block connection Pueblo, CO USA Neoprene in shear unit isolators Non-fused disconnect switch(es) Flange kit for water connections Digits 10, 11—...

  • Page 10: Compressor Model Number

    Model Number Descriptions Compressor Model Compressor Serial Number Number Digits 1-3 — Compressor Family Digits 1-2 — Year CHH= Positive displacement, YY = Last two digits of year of refrigerant, helical rotary, hermetic manufacture compressor Digits 3-4 — Week Digit 4— Compressor Type WW = Week of build, from 00 to 52 GP2+...

  • Page 11: General Data

    General Data Unit Description Accessory/Option Information The 140 - 500 ton Model RTAC units are helical-rotary type, Check all the accessories and loose parts which are air-cooled liquid chillers designed for installation shipped with the unit against the shipping list. Included in outdoors.The compressor circuits are completely these items will be water vessel drain plugs, rigging and assembled, hermetic packages that are factory-piped,...
  • Page 12 1. Data containing information on two circuits is shown as follows: ckt 1/ ckt 2. 2. Minimum start-up/operating ambient is based on a 5 mph wind across the condenser. 3. RTAC units must only operate with refrigerant R-134a and Trane Oil 00048. RTAC-SVX01J-EN...
  • Page 13 1. Data containing information on two circuits is shown as follows: ckt 1/ ckt 2. 2. Minimum start-up/operating ambient is based on a 5 mph wind across the condenser. 3. RTAC units must only operate with refrigerant R-134a and Trane Oil 00048. RTAC-SVX01J-EN...
  • Page 14 1. Data containing information on two circuits is shown as follows: ckt 1/ ckt 2. 2. Minimum start-up/operating ambient is based on a 5 mph wind across the condenser. 3. RTAC units must only operate with refrigerant R-134a and Trane Oil 00048. RTAC-SVX01J-EN...
  • Page 15 1. Data containing information on two circuits is shown as follows: ckt 1/ ckt 2. 2. Minimum start-up/operating ambient is based on a 5 mph wind across the condenser. 3. RTAC units must only operate with refrigerant R-134a and Trane Oil 00048. RTAC-SVX01J-EN...
  • Page 16 1. Data containing information on two circuits is shown as follows: ckt 1/ ckt 2. 2. Minimum start-up/operating ambient is based on a 5 mph wind across the condenser. 3. RTAC units must only operate with refrigerant R-134a and Trane Oil 00048. RTAC-SVX01J-EN...
  • Page 17 1. Data containing information on two circuits is shown as follows: ckt 1/ ckt 2. 2. Minimum start-up/operating ambient is based on a 5 mph wind across the condenser. 3. RTAC units must only operate with refrigerant R-134a and Trane Oil 00048. RTAC-SVX01J-EN...
  • Page 18 1. Data containing information on two circuits is shown as follows: ckt 1/ ckt 2. 2. Minimum start-up/operating ambient is based on a 5 mph wind across the condenser. 3. RTAC units must only operate with refrigerant R-134a and Trane Oil 00048. RTAC-SVX01J-EN...
  • Page 19 1. Data containing information on two circuits is shown as follows: ckt 1/ ckt 2. 2. Minimum start-up/operating ambient is based on a 5 mph wind across the condenser. 3. RTAC units must only operate with refrigerant R-134a and Trane Oil 00048. RTAC-SVX01J-EN...
  • Page 20 1. Data containing information on two circuits is shown as follows: ckt 1/ ckt 2. 2. Minimum start-up/operating ambient is based on a 5 mph wind across the condenser. 3. RTAC units must only operate with refrigerant R-134a and Trane Oil 00048. RTAC-SVX01J-EN...
  • Page 21 1. Data containing information on two circuits is shown as follows: ckt 1/ ckt 2. 2. Minimum start-up/operating ambient is based on a 5 mph wind across the condenser. 3. RTAC units must only operate with refrigerant R-134a and Trane Oil 00048. RTAC-SVX01J-EN...

  • Page 22: Pre-Installation

    At least every three months (quarterly), check the pressure in the refrigerant circuits to verify that the refrigerant charge is intact. If it is not, contact a qualified service organization and the appropriate Trane sales office. • Close the discharge and liquid line isolation valves. Installation Responsibilities...

  • Page 23: Dimensions And Weights

    Dimensions and Weights Clearances clearance for the opening of control panel doors. See Figure 5, p. 23 through Figure 9, p. 25 for minimum clearances. In all cases, local codes which require Provide enough space around the outdoor unit to allow the additional clearances will take precedence over these installation and maintenance personnel unrestricted recommendations.
  • Page 24 Dimensions and Weights Figure 7. Recommended unit clearances 30-45 foot bases Tube Removal Clearance Area (Non DynaView Control Panel End) Figure 8. Recommended remote evaporator unit clearances — 15-30 foot bases RTAC-SVX01J-EN...
  • Page 25 Dimensions and Weights Figure 9. Recommended evaporator clearance 148” (3760 mm) Unobstructed flow of condenser air is essential to maintain chiller capacity and operating efficiency. When determining unit placement, give careful consideration to assuring a sufficient flow of air across the condenser heat transfer surface.Two detrimental conditions are possible and must be avoided if optimum performance is to be achieved: warm air recirculation and coil starvation.

  • Page 26: Dimensions

    Dimensions and Weights Dimensions RTAC-SVX01J-EN...
  • Page 27 Dimensions and Weights RTAC-SVX01J-EN...
  • Page 28 Dimensions and Weights RTAC-SVX01J-EN...
  • Page 29 Dimensions and Weights RTAC-SVX01J-EN...
  • Page 30 Dimensions and Weights RTAC-SVX01J-EN...
  • Page 31 Dimensions and Weights RTAC-SVX01J-EN...
  • Page 32 Dimensions and Weights RTAC-SVX01J-EN...
  • Page 33 Dimensions and Weights RTAC-SVX01J-EN...
  • Page 34 Dimensions and Weights RTAC-SVX01J-EN...
  • Page 35 Dimensions and Weights RTAC-SVX01J-EN...
  • Page 36 Dimensions and Weights Figure 10. Unit dimensions of condenser/compressor unit for remote evap option Table 11. Unit dimensions of condenser/compressor unit for remote evap option (in) Unit Size 140 Std 50.63 52.63 141.63 143.63 40.5 109.5 155 Std 50.63 52.63 139.63 143.63 40.5...
  • Page 37 Dimensions and Weights Figure 11. Unit dimensions for remote evaporator 140-170T standard efficiency, 140T high efficiency CLEARANCES: NO OBSTRUCTIONS RECOMMENDED 3 FT EACH SIDE OF EVAPORATOR, 2 FT OFF ONE END, 148 IN OFF OTHER END. AREA REQUIRED FOR UNIT OPERATION AND MAINTENANCE.

  • Page 38: Weights

    Dimensions and Weights Weights Table 12. Weight - packaged units - 60 Hz - aluminum or CompleteCoat coils Standard Efficiency High Efficiency Extra Efficiency Unit Shipping Operating Shipping Operating Shipping Operating Size (tons) 10831 4913 11077 5024 10858 4925 11140 5053 12172 5521...
  • Page 39 Dimensions and Weights Table 14. Weight - packaged units - 50 Hz - aluminum or CompleteCoat coils Standard Efficiency High Efficiency Unit Shipping Operating Shipping Operating Size (tons) 10831 4913 11077 5024 10910 4949 11113 5041 10845 4919 11091 5031 10872 4931 11153...
  • Page 40 Dimensions and Weights Table 16. Weights - remote - 60 Hz - aluminum or CompleteCoat coils Standard Efficiency High Efficiency Unit Shipping Operating Shipping Operating Size (tons) 8358 3791 8584 3894 8291 3761 8604 3903 8299 3765 8599 3901 9497 4308 9868 4476...

  • Page 41: Installation - Mechanical

    Locate outdoor unit away from sound sensitive areas. If required, install rubber vibration isolators in all water Lifting Procedure piping and use flexible electrical conduit. Consult an acoustical engineer for critical applications. Also refer to Trane Engineering Bulletins for application information on WARNING RTAC chillers. Heavy Objects! Foundation Ensure that all the lifting equipment used is properly rated for the weight of the unit being lifted.
  • Page 42 Installation - Mechanical Figure 14. Lifting the unit (packaged 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 Figure 15.
  • Page 43 Installation - Mechanical Table 19. Center of gravity (in) - 60 Hz (continued) Table 19. Center of gravity (in) - 60 Hz Packaged Remote Remote Evap Unit Size Packaged Remote Remote Evap (tons) Unit Size (tons) Copper Coils - High Efficiency 37.25 Aluminum Coils - Standard Efficiency 35.5...

  • Page 44: Isolation And Sound Emission

    Installation - Mechanical Isolation and Sound Emission Construct an isolated concrete pad for the unit or provide concrete footings at the unit mounting points. Mount the unit directly to the concrete pads or footings. The most effective form of isolation is to locate the unit away from any sound sensitive area.
  • Page 45 Installation - Mechanical Figure 17. Mounting point locations Table 21. Isolator selections - packaged units - 60 Hz Location Size (tons) Standard Efficiency Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62...
  • Page 46 Installation - Mechanical Table 22. Isolator selections - packaged units - 50 Hz Location Size (tons) Standard Efficiency Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62 Red 62...
  • Page 47 Installation - Mechanical Table 24. Point weights (lbs) - packaged units - 60 Hz Table 24. Point weights (lbs) - packaged units - 60 Hz Isolator Location Size- Isolator Location tons Size- tons Copper Coils - High Efficiency 1658 1720 1675 1737 1695 1757 1715 1777 - Aluminum Coils - Standard Efficiency 1956 2029 1958 2022 1949 2011 1928 2001 - 1402 1450 1383 1430 1361 1408 1333 1379...

  • Page 48: Drainage

    1622 1697 1608 1686 1587 1665 1568 1645 1549 1625 from water born debris. Trane is not responsible for 1645 1702 1633 1690 1611 1668 1591 1648 1571 1628 equipment-only-damage caused by water born debris.

  • Page 49: Entering Chilled Water Piping

    • Shutoff (isolation) valves. determine what water treatment, if any, is required. • Thermometers. Trane assumes no responsibility for equipment failures which result from untreated or improperly treated • Clean-out tees. water, or saline or brackish water. •...
  • Page 50 Installation - Mechanical Figure 18. Evaporator water pressure drop— 2-pass evaporator —140-250 ton 250S, 200H, 225H, 250H (60Hz) 225S, 185H 200S, 170H 185S, 155H 170S, 140H 155S 140S Flow Rate (GPM) 1000 Figure 19. Evaporator water pressure drop — 2-pass evaporator — 250-500 ton 250S (50Hz) 40.0 275S...
  • Page 51 Installation - Mechanical Figure 20. Evaporator water pressure drop — 3-pass evaporator — 140-250T 100.00 50.00 140S, 120H(50Hz) 155S, 130H(50Hz) 170S, 140H 10.00 185S, 155H 200S, 170H 5.00 225S, 185H 250S(60Hz), 200H, 225H, 250H(60Hz) 1.00 Flow Rate (GPM) Figure 21. Evaporator water pressure drop — 3-pass evaporator — 250-500T 80.00 60.00 40.00...

  • Page 52: Water Pressure Gauges

    Installation - Mechanical Water Pressure Gauges Figure 22. Suggested piping for typical RTAC evaporator Flow Switch (Factory Installed) Install field-supplied pressure components as shown in Freeze Protection Figure 22, p. 52. Locate pressure gauges or taps in a straight run of pipe; avoid placement near elbows, etc. Be Depending on ambient temperature the unit may be sure to install the gauges at the same elevation on each exposed to, there are multiple options for freeze...

  • Page 53: Low Evaporator Refrigerant Cutout, Glycol Recommendations

    Installation - Mechanical Low Evaporator Refrigerant temperature provided power is available to the pump and the CH530 controller.This option will Cutout, Glycol Recommendations NOT protect the evaporator in the event of a power failure to the chiller unless backup power is 1.
  • Page 54 2. 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.

  • Page 55: Installation - Mechanical - Remote Evaporator Option

    Installation - Mechanical — Remote Evaporator Option The RTAC 140-250 ton outdoor unit with the Remote Evaporator option is shipped as two pieces: the outdoor NOTICE: unit (condensing) and the evaporator. Short suction line connections are provided with the outdoor condensing Equipment Damage! unit.The remote evaporator is shipped complete, with If the circuits are crossed, serious equipment damage...
  • Page 56 Installation - Mechanical — Remote Evaporator Option should be at a height above the condenser coils. A requirements given in Table 29, p. 58 are not suction accumulator must be installed at the exceeded. It should also be noted that in this evaporator.
  • Page 57 Installation - Mechanical — Remote Evaporator Option Figure 24. Circuit identification RTAC-SVX01J-EN...
  • Page 58 Installation - Mechanical — Remote Evaporator Option Table 29. Liquid line sizing - 140-250T remote evaporator Leaving water Height (ft) Leaving water Height (ft) 40-50°F 50-60°F 6-10 11-15 16-20 21-25 26-30 31-35 6-10 11-15 16-20 21-25 26-30 70-ton circuit 1.375 1.375 1.375 1.375...

  • Page 59: Line Sizing

    Installation - Mechanical — Remote Evaporator Option Line Sizing 3. See Table 29, p. 58 to determine outside diameter corresponding to equivalent length computed in step 2 for height and leaving water temperature of interest. To determine the appropriate outside diameter for field installed liquid and suction lines, it is first necessary to Note: If condenser is at same elevation or above evap, establish the equivalent length of pipe for each line.

  • Page 60: Suction Line Sizing Steps

    Installation - Mechanical — Remote Evaporator Option Example Liquid Line Sizing Figure 25. Liquid line sizing example The steps to compute suction line size are as follows: For this example, refer to Table 29, p. Table 30, p. 59 1. Break the suction line into it's Vertical/Upflow and Figure 25, p.

  • Page 61: Piping Installation Procedures

    Installation - Mechanical — Remote Evaporator Option 1. Use the 70 ton circuit column. charge, units with a remote evaporator may not have the same capability, due to additional piping 2. From the liquid line sizing example, use a field installed requirements.

  • Page 62: Leak Test And Evacuation

    Installation - Mechanical — Remote Evaporator Option displacement. Discharge venting capacity should be For field evacuation, use a rotary-type vacuum pump calculated as required by ASHRAE Standard 15-94. Do not capable of pulling a vacuum of 500 microns or less. Follow adjust relief valve setting in the field.

  • Page 63: Refrigerant And Additional Oil Charge

    Installation - Mechanical — Remote Evaporator Option Figure 27. Field wiring between remote evaporator and condensing unit Refrigerant and Additional Oil Charge Refrigerant Charge Determination without the field-installed piping. 2. Next, determine the charge required for the The approximate amount of refrigerant charge required by field-installed piping by referring to Table 34, p.

  • Page 64: Installation - Electrical

    Installation - Electrical General Recommendations All wiring must comply with local codes and the National Electric Code.Typical field wiring diagrams are included at the end of the manual. Minimum circuit ampacities and other unit electrical data are on the unit nameplate. See the unit order specifications for actual electrical data.
  • Page 65 Installation - Electrical Table 35. Standard efficiency - all ambient options # Fan Unit Rated # Pwr Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 0.83 270/270 1845/1845 600/600 200/60/3 0.83 270/270 1845/1845...
  • Page 66 Installation - Electrical Table 35. Standard efficiency - all ambient options (continued) # Fan Unit Rated # Pwr Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 0.83 386/386 2525/2525 821/821 1200 200/60/3 0.83...
  • Page 67 Installation - Electrical Table 35. Standard efficiency - all ambient options (continued) # Fan Unit Rated # Pwr Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 2525-2525/ 200/60/3 12/6 386-386/386 821-821/821 925/526 1200/800...
  • Page 68 Installation - Electrical Table 35. Standard efficiency - all ambient options (continued) # Fan Unit Rated # Pwr Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 386-386/ 2525-2525/ 821-821/ 200/60/3 12/12 1.59 952/952...
  • Page 69 Installation - Electrical Table 35. Standard efficiency - all ambient options (continued) # Fan Unit Rated # Pwr Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 459-459/ 2525-2525/ 821-821/ 200/60/3 14/14 1.59 1130/1130 1200/1200...
  • Page 70 Installation - Electrical Table 36. High efficiency - standard and low ambient options # Fan Unit Rated Power Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 400/50/3 0.83 113/113 796/796 259/259 400/50/3 0.83 113/113...
  • Page 71 Installation - Electrical Table 36. High efficiency - standard and low ambient options (continued) # Fan Unit Rated Power Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 0.83 373-305 2525/2156 821/701 1200 200/60/3...
  • Page 72 Installation - Electrical Table 36. High efficiency - standard and low ambient options (continued) # Fan Unit Rated Power Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 200/60/3 12/6 305-305/373 2156-2156/2525 701-701/821 770/510...
  • Page 73 Installation - Electrical Table 36. High efficiency - standard and low ambient options (continued) # Fan Unit Rated Power Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 373-373/ 2525-2525/ 821-821/ 200/60/3 14/14 1.59...
  • Page 74 Installation - Electrical Table 37. High efficiency - high and wide ambient options (continued) # Fan Unit Rated Power Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 0.83 320/270 2156/1845 701/600 1000 200/60/3...
  • Page 75 Installation - Electrical Table 37. High efficiency - high and wide ambient options (continued) # Fan Unit Rated Power Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 0.83 459/386 2525/2525 821/821 1056 1200...
  • Page 76 Installation - Electrical Table 37. High efficiency - high and wide ambient options (continued) # Fan Unit Rated Power Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 320-320/ 2156-2156/ 701-701/ 200/60/3 12/12 804/804...
  • Page 77 Installation - Electrical Table 38. Extra efficiency - high and wide ambient options # Fan Unit Rated Power Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 0.83 270/270 1845/1845 600/600 200/60/3 0.83 270/270...
  • Page 78 Installation - Electrical Table 38. Extra efficiency - high and wide ambient options (continued) # Fan Unit Rated Power Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 0.83 386/386 2525/2525 821/821 1200 200/60/3...
  • Page 79 Installation - Electrical Table 38. Extra efficiency - high and wide ambient options (continued) # Fan Unit Rated Power Ckt1/ Cntrl XLRA YLRA Ckt1/ Ckt1/ Size Voltage Conn Comp Ckt2 Input Ckt1/Ckt2 Ckt1/Ckt2 Ckt1/Ckt2 Ckt2 Ckt2 200/60/3 320-320/ 2156-2156/ 701-701/ 200/60/3 14/14 1.59...
  • Page 80 Installation - Electrical Table 39. Customer wire selection - standard and high efficiencies (continued) Single point power Dual point power - Ckt 1 Dual point power - Ckt 2 Unit Circuit Circuit Circuit Size Volt Term Disc Breaker Term Disc Breaker Term Disc...
  • Page 81 Installation - Electrical Table 39. Customer wire selection - standard and high efficiencies (continued) Single point power Dual point power - Ckt 1 Dual point power - Ckt 2 Unit Circuit Circuit Circuit Size Volt Term Disc Breaker Term Disc Breaker Term Disc...
  • Page 82 Installation - Electrical Table 39. Customer wire selection - standard and high efficiencies (continued) Single point power Dual point power - Ckt 1 Dual point power - Ckt 2 Unit Circuit Circuit Circuit Size Volt Term Disc Breaker Term Disc Breaker Term Disc...
  • Page 83 Installation - Electrical Table 40. Customer wire selection - extra efficiency Single point power Dual point power - Ckt 1 Dual point power - Ckt 2 Unit Circuit Circuit Circuit Size Volt Term Disc Breaker Term Disc Breaker Term Disc Breaker (4) 2 AWG - (3) 1/0 AWG -...
  • Page 84 Installation - Electrical Table 40. Customer wire selection - extra efficiency (continued) Single point power Dual point power - Ckt 1 Dual point power - Ckt 2 Unit Circuit Circuit Circuit Size Volt Term Disc Breaker Term Disc Breaker Term Disc Breaker (4) 2 AWG -...

  • Page 85: Installer-Supplied Components

    Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors.

  • Page 86: Control Power Supply

    Installation - Electrical Figure 28. Starter panel Cut holes Knockouts for 30V for power wiring THIS AREA 115V Field Wiring Figure 29. Single point power box - optional on dual panel units Control Power Supply Heater Power Supply and Convenience Outlet (Packaged Units Only) The unit is equipped with a control power transformer;...

  • Page 87: Interconnecting Wiring

    Installation - Electrical (100), Remote Display Stop (600), Stopped byTracer (300), Low Ambient Run Inhibit (200), and Ice Building complete NOTICE: (101). Equipment Damage! Regardless of whether the chiller is allowed to control the pump on a full-time basis, if the MP calls for a pump to start Control panel main processor does not check for loss of and water does not flow, the evaporator may be damaged power to the heat tape nor does it verify thermostat...

  • Page 88: Alarm And Status Relay Outputs (Programmable Relays)

    Installation - Electrical Alarm and Status Relay Outputs Table 42. Alarm and Status Relay Output Configuration Table (continued) (Programmable Relays) Description This output is true whenever any compressors A programmable relay concept provides for enunciation of are running (or commanded to be running) on certain events or states of the chiller, selected from a list of Circuit 2 Running Refrigerant Circuit 2, and false when no...

  • Page 89: Emergency Stop

    Installation - Electrical Emergency Stop storage system equipment or controls (provided by others) to signal the system changes required as the chiller CH530 provides auxiliary control for a customer specified/ mode changes from “ice building” to “ice complete” . installed latching trip out. When this customer-furnished When contact 5K18 is provided, the chiller will run remote contact 5K14 is provided, the chiller will run normally when the contact is open.

  • Page 90: External Current Limit Setpoint (Ecls) Option

    Installation - Electrical set via the DynaView or through digital communication field installation, or can be used to enable or disable the withTracer (Comm3).The arbitration of the various chilled feature (if installed). water setpoint sources is described in the flow charts at the ECLS and ECWS Analog Input Signal Wiring end of the section.

  • Page 91: Communications Interface Options

    Installation - Electrical • Maximum Reset Set Points. and CWS' - CWS < or = Maximum Reset The equations for each type of reset are as follows: When any type of CWR is enabled, the MP will step the Active CWS toward the desired CWS' (based on the above Return equations and setup parameters) at a rate of 1 degree F CWS' = CWS + RATIO (START RESET - (TWE -TWL))

  • Page 92: Bacnet Communications Interface (Bci-C)

    Installation - Electrical include both mandatory and optional network variables as Table 45. LonTalk points list (continued) established by the LonMark Functional Chiller Profile 8040. LonTalk Communications Interface Installation Recommendations Leaving Condenser Water analog temperature SNVT_temp_p • 22 AWG Level 4 unshielded communication wire Temperature recommended for most LCI-C installations Alarm...
  • Page 93 Installation - Electrical Interoperability Building Blocks (Annex K) Supported Data Sharing Description BIBB Data Sharing-COV-B (DS-COV-B) Data Sharing-ReadProperty-A (DS-RP-A) ü Data Sharing-ReadProperty-B (DS-RP-B) ü Data Sharing-ReadPropertyMultiple-B (DS-RPM-B) ü Data Sharing-WriteProperty-A (DS-WP-A) ü Data Sharing-WriteProperty-B (DS-WP-B) ü Data Sharing-WritePropertyMultiple-B (DS-WPM-B) ü Supported Alarm and Event Management Description BIBB...
  • Page 94 Installation - Electrical Object Types Table 46. Descriptions and configurations Ability Object Ability to Type Required Properties Read Properties Written Optional Properties Read Create Delete • Object_Identifier • Object_Name • Description • Object_Name • Description • Reliability • Object_Type • Out_Of_Service •...
  • Page 95 Installation - Electrical Table 46. Descriptions and configurations (continued) Ability Object Ability to Type Required Properties Read Properties Written Optional Properties Read Create Delete • Object_Identifier • Object_Name • Description • Object_Name • Description • Inactive_Text • Object_Type • Out_Of_Service •...
  • Page 96 Installation - Electrical Table 46. Descriptions and configurations (continued) Ability Object Ability to Type Required Properties Read Properties Written Optional Properties Read Create Delete • Object_Identifier • Object_Name • Location • Object_Name • Location • Description • Object_Type • Description •...
  • Page 97 Installation - Electrical Table 46. Descriptions and configurations (continued) Ability Object Ability to Type Required Properties Read Properties Written Optional Properties Read Create Delete • Object_Identifier • Object_Name • State_Text • Object_Name • Description • Reliability • Object_Type • State_Text •...

  • Page 98: Object And Diagnostic Data Points With Corresponding Chiller Models

    Installation - Electrical Device Address Binding IBM/Microsoft DBCS ISO 10646 (UCS-4) Device Address Binding Supported? ISO 10646 (UCS2) ü Static Device Binding Supported ü ISO 8859-1 ü JIS C 6226 Networking Options Supported Object and Diagnostic Data Points with Networking Descriptions Option Corresponding Chiller Models Annex H, BACnet Tunneling...
  • Page 99 Installation - Electrical Table 48. Analog Input (continued) Object Identifier Object Name Description Units Analog Input, 25 Local Atmospheric Pressure Local atmospheric pressure. Analog Input, 26 Starts- Compressor 1A Number of starts for compressor 1A. None Analog Input, 27 Starts- Compressor 1B Number of starts for compressor 1B.
  • Page 100 Installation - Electrical Table 48. Analog Input (continued) Object Identifier Object Name Description Units Analog Input, 89 Line 1 Current (%RLA)- Compressor 2A Line 1 Current (%RLA)- Compressor 2A Percent (98) Analog Input, 90 Line 2 Current (%RLA)- Compressor 2A Line 2 Current (%RLA)- Compressor 2A Percent (98) Analog Input, 91...
  • Page 101 Installation - Electrical Table 50. Multistate Input (continued) BCI-C Object Identifier Object Name Description Object States 1 = RTA 2 = CVH 3 = CVG 4 = CVR 5 = CDH 6 = RTH 7 = CGW 8 = CGA Multi-State Input, 5 Model Information Indicates the model type of the chiller.
  • Page 102 Installation - Electrical Table 52. Binary Input (continued) Object Identifier Object Name Description Object States Inactive = No Flow Binary Input, 5 Condenser Water Flow Status Condenser water flow status. Active = Flow Inactive = Off Binary Input, 6 Maximum Capacity Indicates if all available chiller capacity is being used.
  • Page 103 Installation - Electrical Table 53. All Object Types Sorted by Object Name ( ) (continued) Refer to previous tables for detailed descriptions of objects Object Identifier Object Name Description Analog Input, 27 Starts- Compressor 1B Number of starts for compressor 1B. Analog Input, 28 Starts- Compressor 2A Number of starts for compressor 2A.
  • Page 104 Installation - Electrical Table 53. All Object Types Sorted by Object Name ( ) (continued) Refer to previous tables for detailed descriptions of objects Object Identifier Object Name Description Analog Input, 84 Line 2 Current (%RLA)- Compressor 1A Line 2 Current (%RLA)- Compressor 1A Analog Input, 85 Line 3 Current (%RLA)- Compressor 1A Line 3 Current (%RLA)- Compressor 1A...

  • Page 105: Bci-C Alarming

    Installation - Electrical Table 53. All Object Types Sorted by Object Name ( ) (continued) Refer to previous tables for detailed descriptions of objects Object Identifier Object Name Description Binary Input, 24 Shutdown Alarm Present Indicates if a shutdown alarm is present. Binary Input, 25 Last Diagnostic Indicates the last diagnostic for the chiller.

  • Page 106: Operating Principles

    The RTAC chiller uses environmentally friendly R134a. position of the loading valve relative to the rotors. When Trane believes that responsible refrigerant practices are the valve slides toward the discharge end of the rotors important to the environment, our customers, and the air compressor capacity is reduced.

  • Page 107: Condenser And Subcooler

    Operating Principles Figure 32. System schematic Condenser and Subcooler Controls algorithm always runs as many fans as possible without reducing differential pressure (discharge minus suction) below setpoint, 60 psid (4.2 bar). If a warm enough Condenser and subcooler are similar to the condenser ambient is sensed, all fans will run.

  • Page 108: Expansion Valve

    Operating Principles Expansion Valve Oil that is removed from the refrigerant falls by gravity into the oil sump.This oil is directed back to the compressor through the oil lines. Internal to the compressor is a high Pressure drop occurs in an electronic expansion valve.The efficiency filter to clean the oil before it is delivered to the unit controller (CH530) uses the valve to regulate the flow rotors and bearings.

  • Page 109: Controls Interface

    (BAS). • A service tool to provide all service/maintenance capabilities. Main processor and service tool (TechView™) software is downloadable from www.Trane.com.The process is discussed in section “TechView, ” p. 117. DynaView provides bus management. It has the task of restarting the link, or filling in for what it sees as “missing”...

  • Page 110: Display Screens

    Controls Interface increases or decreases by touching the increment (+) or The double up arrows cause a page-by-page scroll either decrement (-) arrows. up or down.The single arrow causes a line by line scroll to occur. At the end of the page, the appropriate scroll bar will Action Buttons disappear.

  • Page 111: Modes Screen

    Controls Interface Until the proper password is entered, there will be no control on the screen will return the display to access to the DynaView screens including all reports, readable condition. setpoints, and Auto/Stop/Alarms/Interlocks. Note: All screens shown in this section are typical. Some The password “159”...
  • Page 112 Controls Interface Table 54. Chiller modes (continued) Chiller Modes Description Top Level Mode Sub-modes The chiller is inhibited from starting by Low Condenser Temperature- Inhibit is active below Start Inhibited by Low Cond Temp either 25°F (can be disabled with proper freeze protection) or 0°F (limit set by design, cannot be disabled).
  • Page 113 Controls Interface Table 55. Circuit modes Circuit Modes Description Top Level Mode Sub-modes The given circuit is not running and cannot run without intervention. Further Stopped information is provided by the sub-mode: The circuit is manually locked out by the circuit lockout setting - the nonvolatile Front Panel Lockout lockout setting is accessible through either the DynaView or TechView.
  • Page 114 Controls Interface Table 55. Circuit modes (continued) Circuit Modes Description Top Level Mode Sub-modes The circuit is in the process of shutdown due to a command from the Building Start Inhibited by BAS Automation System (e.g. Tracer) Service Override The given circuit is in a Service Override mode The circuit is running with fan control, via a manual command to perform a Service Pumpdown Service Pumpdown.

  • Page 115: Chiller Screen

    Controls Interface Table 56. Compressor modes (continued) Compressor Modes Description Top Level Mode Sub-modes The compressor is in the process of shutdown due to a command from the TechView Service Tool Lockout Service Tool to be "locked out" and inoperative. This setting is nonvolatile and operation can only be restored by using TechView to "unlock"...

  • Page 116: Setpoint Screen

    Controls Interface Table 59. Refrigerant screen Table 60. Setpoint screen Description Resolution Units Resolution or Description Text Units Cond Rfgt Pressure Ckt1/Ckt2 Pressure Auto Local or Remote Remote/Local Text Sat Cond Rfgt Temp Ckt1/Ckt2 F / C Front Panel Chilled Water Evap Rfgt Pressure Ckt1/Ckt2 Pressure F / C...

  • Page 117: Diagnostic Screen

    Controls Interface Table 61 Setpoint options/conditions displayed (continued) Option Condition(s) Explanation State is displayed when EXV is open. Unit will not start with EXV manually set open, Open but will initiate valve closure first. Ckt Lockout Locked Out Circuit is locked out at Front Panel; other circuit may be available to run Not Locked Out Circuit is not locked out and is available to run Allows unit to control setpoint;...

  • Page 118: Software Download

    Please contact your localTrane service agency for assistance with any This information can also be found at http:// service requirements. www.trane.com/Commercial/DesignAnalysis/ TechView.aspx. TechView software is available viaTrane.com. 1. Create a folder titled CH530 (C:\CH530) on your hard (http://www.trane.com/Commercial/DesignAnalysis/...

  • Page 119: Compressor Service View

    Controls Interface more sub-panels (depending on the number of circuits in Setpoint List the unit). The center displays the scrollable list of setpoint panels. The Operating Mode tab displays the unit, circuit and Setpoint Enumeration Panel compressor top level operating modes. A setpoint numeric panel contains a label with the setpoint The Hours and Starts tab displays the number a hours description and a pull-down list showing the active value...

  • Page 120: Diagnostics View

    Controls Interface Table 62. Setpoints view items (continued) Text Value Max Value Default Value Unit Type 9.93 16.0 14.7 Absolute Pressure Chiller Local Atmospheric Pressure psia(Kpa) (68.5) (110.3) (101.3) Differential Temp Chiller Design Delta Temperature Deg F(C) (2.22) (16.666) (5.6) None, Return, Outdoor, Chiller Reset Type...
  • Page 121 Controls Interface Table 63. Configuration View Items Item Default Description Feature Basic Product Line RTAC - Air Cooled Series R Chiller 120 Nominal Tons 130 Nominal Tons 140 Nominal Tons 155 Nominal Tons 170 Nominal Tons 185 Nominal Tons 200 Nominal Tons Unit Nominal Capacity 225 Nominal Tons 250 Nominal Tons...
  • Page 122 Controls Interface Table 63. Configuration View Items (continued) Item Default Description N - No remote interface C - Tracer Comm 3 interface Remote Interface B - BACnet communication interface L -Lon Talk Communication interface (LCI) N -No remote input Control Input Accessories/Options R -Remote leaving water temp setpoint C -Remote current limit setpoint B -Remote leaving temp setpoint and remote current limit setpoint...

  • Page 123: Software View

    Controls Interface Software View Replacing or Adding Devices Figure 41, p. 125. Software view allows you to verify If a device is communicating but incorrectly configured, it the version of chiller software currently running and might not be necessary to replace it. If the problem with download a new version of chiller software to DynaView.
  • Page 124 Controls Interface Figure 36. Compressor service view Figure 37. Status view Figure 38. Setpoint view (a) Screenshot is representation only. Values shown may not correspond to actual min/max levels in Table 62, p. 119. Figure 39. Diagnostic view RTAC-SVX01J-EN...
  • Page 125 Controls Interface Figure 40. Configuration view Figure 41. Software view Figure 42. Binding view RTAC-SVX01J-EN...

  • Page 126: Pre-Start Checkout

    • Provide drainage for evaporator water. inadvertently energized. For variable frequency drives or other energy storing components provided by Trane • Remove and discard all shipping materials (cartons, or others, refer to the appropriate manufacturer’s etc.)

  • Page 127: General

    Follow proper lockout/tagout procedures to required. Trane assumes no responsibility for ensure the power can not be inadvertently energized. equipment failures which result from untreated or When necessary to work with live electrical improperly treated water, or saline or brackish water.

  • Page 128: Unit Voltage Power Supply

    For example, if the three measured voltages are 221, 230, protect components from water born debris. Trane is and 227 volts, the average would be: not responsible for equipment-only-damage caused by water born debris.

  • Page 129: Water System Flow Rates

    Measure water pressure drop through the evaporator at inadvertently energized. For variable frequency drives or other energy storing components provided by Trane the field-installed pressure taps on the system water or others, refer to the appropriate manufacturer’s piping.

  • Page 130: Unit Start-Up Procedures

    Use only refrigerants specified on the unit nameplate NOTICE: (HFC 134a) and Trane OIL00048. Failure to do so may cause compressor damage and improper unit operation. Compressor Damage! Seasonal Unit Start-Up Procedure Catastrophic damage to the compressor will occur if...

  • Page 131: System Restart After Extended Shutdown

    It is recommended that the services of a qualified water treatment specialist be engaged to determine what water treatment, if any, is required. Trane assumes no responsibility for equipment failures which result from untreated or improperly treated water, or saline or brackish water.
  • Page 132 Unit Start-Up Procedures Figure 43. Sequence of operations RTAC-SVX01J-EN...
  • Page 133 Unit Start-Up Procedures RTAC-SVX01J-EN...
  • Page 134 Unit Start-Up Procedures Figure 44. Sequence of operations RTAC-SVX01J-EN...
  • Page 135 Unit Start-Up Procedures RTAC-SVX01J-EN...

  • Page 136: Shutdown

    Shutdown Temporary Shutdown And “OPEN” position. If the optional control power transformer is not installed, open and lock the 115V Restart disconnect. NOTICE: To shut the unit down for a short time, use the following procedure: Equipment Damage! 1. Press the STOP key on the CH530.The compressors If insufficient concentration or no glycol is used, the will continue to operate and, after an unloading period evaporator water pumps must be controlled by the...

  • Page 137: Maintenance

    For variable frequency drives After unit has been operating for approximately 30 or other energy storing components provided by Trane minutes and system has stabilized, check the operating or others, refer to the appropriate manufacturer’s...
  • Page 138 Maintenance RTAC-SVX01J-EN...
  • Page 139 Maintenance RTAC-SVX01J-EN...

  • Page 140: Refrigerant And Oil Charge Management

    Maintenance Refrigerant and Oil Charge • Possible whistling sound coming from liquid line (due to high vapor velocity) Management • High condenser + subcooler pressure drop Proper oil and refrigerant charge is essential for proper Some symptoms of a refrigerant over-charged unit operation, unit performance, and environmental unit: protection.

  • Page 141: R-134A Field Charging Procedure

    For variable frequency drives The warranty will be void, in case of freezing due to the or other energy storing components provided by Trane lack of use of either of these protections. or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of 1.

  • Page 142: Charge Isolation In The High Or Low Side Of System

    Maintenance 3. Close valve, remove charging hose and start unit. Monitor subcooling. Table 64. Charge holding capabilities on high side 4. If subcooling is still insufficient, return to step #1. Condenser Charge Note: Proper subcooling can be determined from run log Holding history, service experience, or by contactingTrane Nominal...

  • Page 143: Refrigerant Filter Replacement Procedure

    Maintenance Lubrication System charge in the condenser. It may be connected to the condenser drain port on the liquid line isolation valve. The lubrication system has been designed to keep most of Notes: If a pump is to be used, connect it before closing the oil lines filled with oil as long as there is a proper oil this valve.This port is only isolated when the level in the oil sump.
  • Page 144 Maintenance Figure 45. Oil system schematic Oil system consists of the following components: • Compressor • Oil separator • Discharge line with service valve • Oil line from separator to compressor • Oil line drain (lowest point in system) • Oil cooler - optional •...

  • Page 145: Factory (Initial) Oil Charging Procedure

    The field charging procedure depends on the Equipment Damage! circumstances that resulted in the need for oil charge. Use only Trane OIL00048 in the RTAC units to avoid any 1. Some service procedures may result in loss of small catastrophic damage to the compressor or unit.

  • Page 146: Evaporator Tube Replacement

    Maintenance simply replace the oil that was removed into the serviced flash tank in line with the vacuum pump to make component prior to vacuum and recharge of the sure that oil, that is pulled out of the filter cavity, refrigerant.

  • Page 147: Condenser Maintenance

    Maintenance Travel Restraint compressor is very heavy, so insure that the support is sturdy. A piece of 1x4 lumber placed between the isolators works well to support the compressor feet as it is pulled from the chiller. WARNING 5. Install the new compressor. Reinstall all lines, wires, Falling Off Equipment! and screws.

  • Page 148: Diagnostics

    Diagnostics Legend to Diagnostics Table Persistence: Defines whether or not the diagnostic and its effects are to be manually reset (Latched), or can be either manually or automatically reset (Nonlatched). Legacy Hex Code: 3 digit hexadecimal code used on all past products to uniquely identify diagnostics.
  • Page 149 Diagnostics Table 66. Starter diagnostics (continued) Active Modes Diagnostic Name Affects [Inactive Reset and Source Target Severity Persistence Modes] Criteria Level a) No current was sensed on one or two of the current transformer inputs while running or starting (See Nonlatching Power Loss Diagnostic for all three phases lost while running).
  • Page 150 Diagnostics Table 66. Starter diagnostics (continued) Active Modes Diagnostic Name Affects [Inactive Reset and Source Target Severity Persistence Modes] Criteria Level The compressor had previously established currents while running and then all three phases of current were lost. Design: Less than 10% RLA, trip in 2.64 seconds. This diagnostic will preclude the Phase Loss Diagnostic and the Transition Complete Input Opened Diagnostic from being called out.
  • Page 151 Diagnostics Table 66. Starter diagnostics (continued) Active Modes Diagnostic Name Affects [Inactive Reset and Source Target Severity Persistence Modes] Criteria Level Detected compressor currents greater than 10% RLA on any or all phases when the compressor was commanded off. Detection time Starter shall be 5 second minimum and 10 seconds maximum.
  • Page 152 Diagnostics Table 66. Starter diagnostics (continued) Active Modes Diagnostic Name Affects [Inactive Reset and Source Target Severity Persistence Modes] Criteria Level This is a specific starter test where 1M(1K1) is closed first and a Starting - Y Starter Fault Type I - check is made to ensure that there are no currents detected by Cprsr Immediate...
  • Page 153 Diagnostics Table 66. Starter diagnostics (continued) Active Modes Diagnostic Name Affects [Inactive Reset and Source Target Severity Persistence Modes] Criteria Level The Transition Complete input was found to be opened with the compressor motor running after a successful completion of Transition Complete transition.

  • Page 154: Main Processor Diagnostics

    Diagnostics Main Processor Diagnostics Table 67. Main processor diagnostics Active Modes Affects Persist- [Inactive Reset Diagnostic Name Target Severity ence Modes] Criteria Level The BAS was setup as "installed" at the MP and the Comm 3 llid lost communications with the BAS for 15 contiguous minutes after it had been established.
  • Page 155 Diagnostics Table 67. Main processor diagnostics (continued) Active Modes Affects Persist- [Inactive Reset Diagnostic Name Target Severity ence Modes] Criteria Level Bad Sensor or LLID a. Normal operation, no effects on control. Evaporator Entering Chilled b. Chiller shall remove any Return or Constant Return Chilled Water Temperature Water Info...
  • Page 156 Diagnostics Table 67. Main processor diagnostics (continued) Active Modes Affects Persist- [Inactive Reset Diagnostic Name Target Severity ence Modes] Criteria Level High Differential The system differential pressure for the respective circuit was Refrigerant Pressure Circuit Normal Latch Cprsr Energized above 275 Psid for 2 consecutive samples or more than 10 Remote - Circuit 2 seconds...
  • Page 157 Diagnostics Table 67. Main processor diagnostics (continued) Active Modes Affects Persist- [Inactive Reset Diagnostic Name Target Severity ence Modes] Criteria Level The respective oil temperature as supplied to the compressor, exceeded 200 F for 2 consecutive samples or for over 10 High Oil seconds.
  • Page 158 Diagnostics Table 67. Main processor diagnostics (continued) Active Modes Affects Persist- [Inactive Reset Diagnostic Name Target Severity ence Modes] Criteria Level The liquid level sensor is seen to be at or near its low end of range Low Evaporator Starter Contactor for 80 contiguous minutes while the compressor is running.
  • Page 159 Diagnostics Table 67. Main processor diagnostics (continued) Active Modes Affects Persist- [Inactive Reset Diagnostic Name Target Severity ence Modes] Criteria Level The intermediate oil pressure transducer for this compressor Cprsr Energized was out of the acceptable pressure range for 15 seconds, while Low Oil Flow - Cprsr Immediate...
  • Page 160 The events that led up to this reqd failure, if known, should be recorded and transmitted to Trane Controls Engineering - (SW rev 24 and higher) Starter Failed to Starter failed to arm or start within the allotted time (15...
  • Page 161 Diagnostics Table 67. Main processor diagnostics (continued) Active Modes Affects Persist- [Inactive Reset Diagnostic Name Target Severity ence Modes] Criteria Level Starter Module Checksum on RAM copy of the Starter LLID configuration failed. Memory Error Type None Info Latch Local Configuration recalled from EEPROM.

  • Page 162: Communication Diagnostics

    Diagnostics Table 67. Main processor diagnostics (continued) Active Modes Affects Persist- [Inactive Reset Diagnostic Name Target Severity ence Modes] Criteria Level The evaporator pressure dropped below 8 psia (or 5 psia in sftw prior to Oct '02) regardless of whether or not compressors are Very Low Evaporator running on that circuit.
  • Page 163 Diagnostics Table 68. Communication diagnostics (continued) Active Modes Affects Persist- [Inactive Reset Diagnostic Name Target Severity ence Modes] Criteria Level Comm Loss: Evaporator Continual loss of communication between the MP and the Rfgt Liquid Level, Circuit Circuit Immediate Latch Remote Functional ID has occurred for a 30 second period.
  • Page 164 Diagnostics Table 68. Communication diagnostics (continued) Active Modes Affects Persist- [Inactive Reset Diagnostic Name Target Severity ence Modes] Criteria Level Continual loss of communication between the MP and the Comm Loss: Fan Inverter Special Inverter Latch Functional ID has occurred for a 30 second period. Operate the Remote Fault, Circuit #2, Drive 2 Mode...
  • Page 165 Diagnostics Table 68. Communication diagnostics (continued) Active Modes Affects Persist- [Inactive Reset Diagnostic Name Target Severity ence Modes] Criteria Level Comm Loss: Male Port Continual loss of communication between the MP and the Cprsr Normal Latch Remote Load Compressor 1A Functional ID has occurred for a 30 second period.
  • Page 166 Diagnostics Table 68. Communication diagnostics (continued) Active Modes Affects Persist- [Inactive Reset Diagnostic Name Target Severity ence Modes] Criteria Level Continual loss of communication between the MP and the Functional ID has occurred for a 30 second period. Design Note: Comm Loss: Suction Cprsr Immediate...

  • Page 167: Main Processor Boot Messages And Diagnostics

    Diagnostics Main Processor Boot Messages and Diagnostics Table 69. Main processor boot messages and diagnostics DynaView Display Message Description Troubleshooting A valid configuration is present in the MP's nonvolatile memory. The configuration is a set of variables and settings that define the physical makeup of this particular chiller. These include: number/airflow,/and type A Valid Configuration is Present of fans, number/and size of compressors, special features, characteristics, and control options.

  • Page 168: Unit Wiring

    Unit Wiring Table 70 provides a list of field wiring diagrams, electrical schematics and connection diagrams for 120-500 ton RTAC units.The complete unit wiring package is documented in RTAC-SVE01*-EN. A laminated wiring diagram kit is also shipped with each RTAC unit. Table 70.
  • Page 169 Unit Wiring Table 70. RTAC unit wiring drawing numbers Drawing Number Description Sheet 1 Table of Contents & Notes Sheet 2 Devices, Descriptions & Designations Sheet 3 Compressor Power 1A & Fan Control Ckt 1 Sheet 4 Compressor Power 1B Sheet 5 Compressor Power 2A &...
  • Page 170 HVAC systems, comprehensive building services, and parts. For more information, visit www.Trane.com. Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. © 2012Trane All rights reserved...

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