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

Packaged air-cooled magnetic bearing chiller
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Installation, Operation, and Maintenance
Packaged Air-Cooled Magnetic
Bearing Chiller
Model TCAA
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.
February 2024
SAFETY WARNING
ARTC-SVX013A-EN

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  • Page 1 Installation, Operation, and Maintenance Packaged Air-Cooled Magnetic Bearing Chiller Model TCAA 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.
  • Page 2 (HCFCs). Not all refrigerants containing these compounds bump cap, fall protection, electrical PPE and arc have the same potential impact to the environment. Trane flash clothing). ALWAYS refer to appropriate advocates the responsible handling of all refrigerants.
  • Page 3 Follow EHS Policies! This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in Failure to follow instructions below could result in part without written permission. Trane reserves the right to death or serious injury.

  • Page 4: Table Of Contents

    Table of Contents Model Number Descriptions ....6 Connecting Module Power and Control Wires ........16 Model Number and Coding.
  • Page 5 Table of Contents Sequence of Operations ....69 Timeout State ......73 Power Failure .

  • Page 6: Model Number Descriptions

    Refer to the Trane nameplate on each installed unit for the This information is located on the chiller nameplate that is serial number and model number.
  • Page 7 Model Number Descriptions Figure 1. Chiller nameplate ARTC-SVX013A-EN...

  • Page 8: Chiller Description

    Components This manual provides relevant data to properly operate, • Dual Manifold Pressure Relief Valve Located on maintain, and troubleshoot the Trane Packaged TCAA Evaporator and Compressor Discharge Line, per chiller. Operator and maintenance personnel must be a Circuit qualified refrigeration technician and have a working knowledge of high voltage systems, low voltage control •...

  • Page 9: Component Specification

    Chiller Description Flooded Shell and Tube Evaporator and • Passive Harmonic Filters Condenser • Rapid Restart • Compressor Wraps • Extremely compact design • Low Sound Fans • 225 PSI operating pressure • Isolation Pads • Maximum material efficiency due to no dead zone •...

  • Page 10: General Data

    General data Table 2. General data - Packaged TCAA chiller Model TCAA110AT TCAA150BT TCAA220BT TCAA330CT TCAA400DT TCAA440DT Tonnage Range 80-120 110-165 165-240 250-360 350-420 400-450 General Unit Number of Independent Refrigeration Circuits R-513A Refrigerant Charge (lbs/ 1080 1480 1520 Chiller) w/ECO Chilled Fluid Volume (gal/Chiller) 28.5 56.7...

  • Page 11: Installation Mechanical

    Verify the correct model number and that all skids and cartons have been delivered. Any damage must be Long Term Storage reported to the motor carrier and Trane within five days of receipt of the shipment. Requirements Inspect all exterior components for concealed damage as Appropriate preparation and storage of Trane chiller soon as possible.

  • Page 12: Handling Of The Chillers

    Do not exceed the product ratings or maximum Failure to adhere to the long-term storage requirements limits. Products rated only for basic insulation may void the Trane warranty. Any component that is must be installed on insulated conductors. damaged or inoperable due to improper storage may have its warranty voided.

  • Page 13: Rigging, Lifting, And Moving The Chiller

    In the event that an engineer or customer insists on springs, the Trane guidance is to point load the chillers on springs sized properly for the weights in the submittal. The preferred method of support is along the full perimeter or at least along the entire length of the unit.
  • Page 14 Corrosion of the base rail on possible on site, then the base of the chiller can be welded welded sections would be void of any Trane warranty. at the point load locations. If welding is to be done, the...

  • Page 15: Installation Piping

    Installation Piping Install Piping and External debris, weld slag, and other contamination deposited during fabrication of the piping system. Components Typical flushing includes hot water with mild detergent Proper support of piping and pipe hangers must consider followed by a dilute phosphoric acid solution until all visible the weight of the piping as well as the water weight inside residue is removed.

  • Page 16: Installation Electrical

    Installation Electrical Connecting Module Power and Table 3. Hardwire options (continued) Control Wires Function Detail Connections are typically made at the power distribution 4-20 mA signal to work with as chiller-based Remote Offset baseline setpoint. Requires remote offset enable. panel of each chiller. External Load 0-10 v or 4-20 mA signal to limit max power of the WARNING...

  • Page 17: Pre-Startup

    Pre-Startup Preparation for Initial Start-Up Ensure that the proper request for start-up form has been completed and provided to your local representative. After the system is completely installed with all wires connected and all piping securely coupled, the chiller can be prepared for initial start-up.

  • Page 18: Operating Principles

    Operating Principles This section contains an overview of the operating motor compartment of the motor. The refrigerant flows principles of the Trane Packaged TCAA chillers equipped across the motor, providing the necessary cooling, then with Danfoss MCX controllers. enters the compression chamber. Refrigerant is compressed in the compressor to discharge pressure conditions.

  • Page 19: Operating Procedures

    OFF position before the panel can be opened for service. When the panel door is open, the power is disengaged. Controller and HMI The Trane Packaged TCAA chiller models use Danfoss MCX microprocessor controllers and Schneider 10inch touchscreen HMI to monitor and report critical operating parameters.

  • Page 20: Operating The Microprocessor

    Operating Procedures Operator Control Figure 7. Danfoss MCX primary controller A touchscreen interface panel is the primary means for the operator or maintainer to monitor and modify a host of functions involving temperatures, pressures, set points alarms, elapsed operating hours, etc. The touchscreen interface is connected to and communicates with all controllers via the Ethernet switch.

  • Page 21: Control Architecture

    Operating Procedures Control Architecture • Optional Functionalities – Free Cooling The control architecture is broken down in the following categories: – Pump and Plant Controls • Basic Controls – considers both standard water-cooled – Data Logging and air-cooled chillers – Master/Slave –...
  • Page 22 Operating Procedures Menus Table 5. HMI main menu features (continued) This system has three functional menus: Feature Function • Main Menu – persistent across all displays. • Devices Menu – persistent across devices functions. Triggers data logging snapshot. • Settings Menu – persistent across settings functions. Main Menu Displays About Page.
  • Page 23 Figure 12. Devices menu Displays controls that provide the chiller identity. Important: Settings should only be changed by Trane- trained representatives. Accessed by Admin Level Security only. For debugging purposes, this page displays the complete data array that is sent to the BMS system.
  • Page 24 Operating Procedures The following table shows the features accessed by the Table 7. HMI devices menu features (continued) devices menu: Feature Function Table 7. HMI devices menu features Feature Function Displays a control overview of the economizer valves (optional) in the system. Displays a control overview of the EXV(s) in the system.
  • Page 25 Operating Procedures Data Displays The following table shows the standard set of main menu HMI screens. Main Menu Table 8. HMI main menu screens Screen User Interface Function Access • Appears only after program has been loaded in HMI first time.
  • Page 26 Operating Procedures Table 8. HMI main menu screens (continued) Screen User Interface Function Access Displays current value of all hardwired Controller I/O Main Menu > I/O > MCX061V Companion PLC inputs and outputs. Compressor Provides detailed snap-shot information (1 for each Main Menu >...
  • Page 27 Operating Procedures Table 8. HMI main menu screens (continued) Screen User Interface Function Access Display: display is different Displays water temperatures and system based on pressures in large font for easy long-distance whether it is reading. Air-cooled configuration replaces Main Menu > Temp Air-Cooled or condenser water temperatures with ambient Water-Cooled...
  • Page 28 Operating Procedures Devices Menu • Trend Display from the previous 30 minutes also using the colour code above. All device menu screens have a similar look and feel, reflecting control is also similar. They share the following – You can change range of the vertical axis with the properties: Max/Min entries.
  • Page 29 Operating Procedures Table 9. HMI devices menu screens (continued) Screen User Interface Function Access • Displays trend and settings of evaporator circuit pumps controls Evaporator (see “Condenser and Evaporator Main Menu > Devices Menu > Pump Pumps Duty/Backup Pumps,” p. 57).
  • Page 30 Operating Procedures Table 9. HMI devices menu screens (continued) Screen User Interface Function Access Displays trend and settings of Hot Gas Hot Gas Valve controls (see “Hot Gas Bypass Valve Main Menu > Devices Menu > HGV Valves Control,” p. 61).
  • Page 31 Operating Procedures Setting Menu above with the exception of HMI configuration page which is Admin Level. The following tables shows the standard set of setting menu screens. All settings pages are Tech Level Access or ARTC-SVX013A-EN...
  • Page 32 Operating Procedures Table 10. HMI settings menu screens Screen User Interface Function Access • Display and adjust compressor specific parameters. • See T3C Documentation for specifics on the settings with the exceptions. – Parameters Compressor Motor Power and Rated Power Consumption require that the controller be power cycled to fully accept any changes to these values.
  • Page 33 Operating Procedures Table 10. HMI settings menu screens (continued) Screen User Interface Function Access • Admin Level Chiller SP Control (see “Special Functions,” p. 35). • Display and adjust chiller PI Loop settings. • Compressor staging control is a differential control known as Low Urgency Zone (LUZ) in this software.
  • Page 34 Display output Building Management System. Note: This page validates the communication Main Menu > Settings Menu > BMS Interface between Chiller and the Trane Technologies BMS gateway (FieldServer). Provides an interface to the security system for Main Menu > Settings Menu >...

  • Page 35: Special Functions

    Operating Procedures Table 10. HMI settings menu screens (continued) Screen User Interface Function Access • Allows use of T3C Output terminals, both analog and digital for Companion functions. • Touch each output configuration box to Companion IO Main Menu > Settings Menu > scroll through available functions.
  • Page 36 Operating Procedures Chiller Setpoint Control In user setpoint mode, Actual Setpoint equals to User Setpoint. Multiple chiller setpoint control modes are available. These are: Digital Offset • User Setpoint This feature requires a parameter and a digital input. The parameter, Digital Offset is exposed to the HMI on the •...
  • Page 37 Operating Procedures Note: Actual Setpoint equals Remote Setpoint. To use this scenario the controller requires: • Inputs: With Digital Offset – Remote Offset Enable – input #4. Remote setpoint and the digital offset can be combined: • Parameters: Figure 16. Chiller setpoint control - Remote setpoint –...
  • Page 38 Operating Procedures Table 12. EXV control options Screen Controls Access ArcticCool EXV Control. • This option requires ArcticCool T3C Companion Controller. The T3C Companion works with the ArcticCool Main Controller; they share information including Inputs and Outputs. The Companion cannot work as a stand-alone controller because it does not have the inputs and outputs to sustain the functionalities built in.
  • Page 39 Operating Procedures Table 12. EXV control options (continued) Screen Controls Access Enable and disable from the HMI configuration SubCool Reset Function. screen. Evaporator Approach Reset. For sub cooling Pick point from EXV control screen, available when algorithm only Function: set PI parameters. using sub-cooling algorithm.
  • Page 40 Operating Procedures uses individual SP adjustable on the main The Fan Control option of the T3C Companion condenser valve screen. Controller has the following features: – PID direction. Rev – PID acts in Cooling mode; Fwd – Four independent circuits –...
  • Page 41 Operating Procedures Table 13. Fan control options Screen Controls Access Common Controls: Main Menu > Devices Menu > Fan> Setup>Common Parameters • P-Gain is the proportional component of the control loop. • Integral for the control loop in seconds. • Min and Max Speeds allow user to tailor the controls to the application.
  • Page 42 Operating Procedures Table 13. Fan control options (continued) Screen Controls Access Compressor speed-based SP control: • Looks at running compressors average speed to decide on increasing or decreasing SP. • Initial SP – When chiller starts this becomes the control SP. •...
  • Page 43 The device is a FieldServer Protonode from MSA Safety Enter the Flow Meter Maximum value on the Chiller with Trane-specific configuration. Control Screen. Protocols Figure 22. Flow meter maximum The chiller control system supports the following BMS communication protocols.
  • Page 44 Default Configuration • Alarm reset – Value of 2 is required to reset alarms. As part of factory start up, Trane sets the BMS interface in • Adiabatic Cooling EN– if the chiller is equipped then 0 the following way: –...
  • Page 45 Operating Procedures Table 14. BMS analog data listing (continued) Object Modbus EIP Read Tag EIP Write Tag Tag Name Description Object Id Register Type Name Name Compressor Power (Integer Value with 1 implied DTC2 Compressor Power AO_01_SC[12] WR_AO_01_SC[12] 30013 decimal) - Compressor #2 Compressor Power (Integer Value with 1 implied DTC3 Compressor Power AO_01_SC[13]...
  • Page 46 Operating Procedures Table 14. BMS analog data listing (continued) Object Modbus EIP Read Tag EIP Write Tag Tag Name Description Object Id Register Type Name Name Discharge Pressure (Integer Value with 1 implied DTC6 Discharge Pressure AO_01_SC[48] WR_AO_01_SC[48] 30049 decimal) - Compressor #6 Spare Scaled Data 1 AO_01_SC[49] WR_AO_01_SC[49]...
  • Page 47 Operating Procedures Table 14. BMS analog data listing (continued) Object Modbus EIP Read Tag EIP Write Tag Tag Name Description Object Id Register Type Name Name Chiller General Alarm (1 - New Alarm Exists) AO_01[84] WR_AO_01[84] General Alarm 30085 Chiller Actual Setpoint (Integer Value with 1 implied AO_01_SC[85] WR_AO_01_SC[85] Actual SP...
  • Page 48 Operating Procedures Table 14. BMS analog data listing (continued) Object Modbus EIP Read Tag EIP Write Tag Tag Name Description Object Id Register Type Name Name WR_AO_01_SC AO_01_SC[114] Low Noise EN Enable Fan Low Noise Function 40115 [114] WR_AO_01_SC Low Noise Setpoint Fan Speed Setting for Low Noise AO_01_SC[115] 40116...
  • Page 49 Operating Procedures Table 15. BMS BO Objects: Status, alarms, and faults (continued) Object Modbus Metasys N2 EIP Read Tag Tag Name Array EIP Write Tag Name Instance Type Register Address Name DTC2 Fault: Super Heat Fault DTCFaults[29] WR_DTCFaults[29] DTCFaults 10030 DTC3 Fault: Inverter Temperature DTCFaults[32] WR_DTCFaults[32]...
  • Page 50 Operating Procedures Table 15. BMS BO Objects: Status, alarms, and faults (continued) Object Modbus Metasys N2 EIP Read Tag Tag Name Array EIP Write Tag Name Instance Type Register Address Name DTCFaults[73] WR_DTCFaults[73] DTC5 Fault: Sensor Fault DTCFaults 10074 DTC5 Fault: SCR Temperature DTCFaults[74] WR_DTCFaults[74] DTCFaults...
  • Page 51 Operating Procedures Table 15. BMS BO Objects: Status, alarms, and faults (continued) Object Modbus Metasys N2 EIP Read Tag Tag Name Array EIP Write Tag Name Instance Type Register Address Name DTC3 Alarm: Inverter Temperature DTCAlarms[32] WR_DTCAlarms[32] DTCAlarms 10133 DTC3 Alarm: Discharge Temperature DTCAlarms[33] WR_DTCAlarms[33] DTCAlarms...
  • Page 52 Operating Procedures Table 15. BMS BO Objects: Status, alarms, and faults (continued) Object Modbus Metasys N2 EIP Read Tag Tag Name Array EIP Write Tag Name Instance Type Register Address Name Chiller: Evaporator Flow Fault ChillerFaults[0] WR_ChillerFaults[0] ChillerFaults 10201 ChillerFaults[1] WR_ChillerFaults[1] Chiller: Condenser Flow Fault ChillerFaults...
  • Page 53 Operating Procedures Table 15. BMS BO Objects: Status, alarms, and faults (continued) Object Modbus Metasys N2 EIP Read Tag Tag Name Array EIP Write Tag Name Instance Type Register Address Name ChillerStatus[8] WR_ChillerStatus[8] Chiller: Barrel Isolation Circuit 1 ChillerStatus 10309 ChillerStatus[9] WR_ChillerStatus[9] Chiller: Barrel Isolation Circuit 2...

  • Page 54: Optional Functionalities

    Operating Procedures Compressor Staging Valve Control – On stage up – the lowest runtime is started. All compressors Staging Valves controls can be accessed – On stage down – the highest runtime is stopped. from compressors screen Main Menu →Comp button → •...
  • Page 55 Operating Procedures Free Cooling Mechanical Mode The free cooling option comes with the T3C Companion The chiller, working in mechanical mode, derives all cooling Controller. See the following figure. from the compressors. The modulating valve is closed and no flow goes to the fluid cooler. The fans in the system are Figure 29.
  • Page 56 Operating Procedures Figure 30. Free-cool fan control page Figure 31. Free-cool valve control page This control page has some of the same features as the The following states shows differences from a standard Free-Cool Fan control page except this has free cooling control page.
  • Page 57 Operating Procedures Condenser and Evaporator Duty/Backup • Thresholds Pumps – Enable – On falling temperatures, as the ambient temperature goes lower than the enable threshold, The chiller control system has two options for pumps free cooling is engaged. control as selected from the HMI configuration page – HMI Pump Control.
  • Page 58 Operating Procedures Table 17. Chiller pump control Screen User Interface Function Access Evaporator Main Menu > • Displays trend and current values for Setpoint, Pumps Control Devices Process Value and Control value. Pumps Menu > speed is controlled based on: Pump –...
  • Page 59 Operating Procedures Table 18. Condenser pump controls Screen User Interface Function Access Condenser Main Menu • Screen has the same features / capabilities as Pumps Control > Devices Evaporator Pumps Control screen (see above). Menu > • To access other settings click Setup. Pump button >...
  • Page 60 Operating Procedures Economizer Control The Economizer Control (ECO) provides cooling refrigerant vapour to the interstage port of the Turbocor compressor. The ECO function has the following algorithms: Table 20. ECO function algorithms Algorithm Display Detail Speed – Enables the ECO function between threshold settings based on relative compressor speed (%).
  • Page 61 Operating Procedures 1. Flash Tank Level. 2. PI loop parameters. 3. Level Setpoint (default – 25 percent). 4. Valve max and min output values. Clicking the ECO EXV button invokes the scree below with 5. Loop delay. following controls. 6. Flash Tank Max Level (default – 60 percent) – this 1.
  • Page 62 Operating Procedures Table 22. Hot gas low balancing control Screen User Interface Function Access Hot Gas Bypass Main Menu > • Displays trend and current values for Setpoint, Valves Control Devices Menu Process Value and Valve position. > HGV • PV.

  • Page 63: Security Configuration

    Operating Procedures • Temperature Enable Threshold – When either the • Cooling EN – All isolation valves are open when chiller inverter or cavity temperature exceeds this value and is enabled. the pressure ratio permissive is satisfied, the pump is When either Compressor or Cooling EN selected, the started.

  • Page 64: Alarm Handling

    Operating Procedures Diagnostics Alarm List Alarm Handling There are two alarms lists that can be accessed on the HMI: • Main alarms list - It encompasses all the alarms/faults that affect compressors/chiller operation and have to be handled by the operator. •...

  • Page 65: Emergency Power Shutdown

    Maintaining water/glycol mixture quality and cleanliness is Note: Trane will not validate the chiller warranty if the critical to chiller health and maintainability. Water/glycol proper water/glycol mixture composition and quality mixture samples should be taken and tested by a is not maintained.

  • Page 66: Maintain Glycol Level

    If the concentration of glycol is sufficient, no glycol. Trane does not warranty any component that fails damage to the chiller from fluid expansion should occur due to freezing.
  • Page 67 Operating Procedures The addition of glycol to water yields a solution with a Figure 35. Water/Glycol concentration freezing points (in degrees Fahrenheit) freezing point below that of water. This has led to the extensive use of glycol-water solutions as cooling media at temperatures appreciably below the freezing point of water.

  • Page 68: Unit Controls

    Unit Controls The control system is comprised of PLC, HMI and BMS NOTICE interface device. All unit controls and devices have been Proof of Flow Switch! factory installed and tested prior to shipment. The control Failure to provide flow switches or jumping-out of circuit incorporates all major safety devices and control switches could result in severe equipment damage.

  • Page 69: Sequence Of Operations

    Sequence of Operations The Chiller Sequence of Operations (SOO) has two Stage-In. This state has the following steps: components. a. Demand is reduced to the Running compressors 1. Main Sequence until stage in Pressure Ratio is achieved. Compressors state is Retreating. Once PR 2.

  • Page 70: Device Sequences

    Surge and Choke. It is design to keep circuits. The software includes a selection of algorithms to the compressor at its most efficient. control the EXV. The factory and Trane Technologies • Low-Lift – SDT setpoint is a function of pressure ratio technicians set the algorithm to best suit your conditions (PR) between a Max and Min PR parameter.
  • Page 71 Sequence of Operations 2. Direct Expansion with TXV – controls a solenoid per 2. If Pressure Ratio (PR) drops below Engage Threshold, compressor. System is considered in Low-Lift condition. For PR mode, pump always runs while low-lift is true. 3. Direct Expansion with EXV – controls a solenoid per compressor and EXV per circuit with Suction Superheat 3.

  • Page 72: Chiller Operational States

    Sequence of Operations Idle State • Pass-Through – this accepts a signal from another source, likely the BMS, and sends this value directly to The chiller is standing idle (zero capacity) but is ready for the pump. start of the first compressor. The following is the sequence of operations for pumping.

  • Page 73: Compressor Control States

    Sequence of Operations Compressor Control States Retreating State Figure 37. Compressor control states flow chart Compressors cannot be started against a high-pressure ratio. Thus, it is sometimes necessary to bring the pressure ratio down before another compressor can be started. It is advisable to do this as quickly as possible so that the interruption of the normal operation is reduced to a minimum.

  • Page 74: Maintenance Procedures

    These include maintaining an and costly repairs and chiller down time. Trane chillers are operational log and conducting weekly, quarterly, and designed for ease of access with a premium placed on annual inspections of the chiller.

  • Page 75: Maintenance Schedule

    Maintenance Procedures Maintenance Schedule • Verify operation of staging valves. • Verify system operation by recording chiller operation WARNING e.g. sub- cooling, superheat, water temps, etc. Hazardous Voltage! Winter - Major Inspection Failure to disconnect power before servicing could result in death or serious injury. •...
  • Page 76 Maintenance Procedures Table 26. Maintenance schedule (continued) Daily Quarterly Bi-annually Annually Task Other Ensure all communication cables are secure. Ensure all electronic modules are secure. Check physical condition of all exposed printed circuit boards (PCBs). Check all exposed PCBs for dust build-up and clean if necessary. Check discharge and suction pressure/temperature sensors for accuracy against calibrated pressure/temperature gauges.

  • Page 77: Winter Shutdown Preparation

    Maintenance Procedures Winter Shutdown Preparation Critical Cleaning Tasks Dry Layup Shutdown Coated Coils Cleaning Tasks Rooms where chillers have chance of freezing or coming in WARNING contact with hot water: Hazardous Chemicals! 1. Close chilled water and condenser water isolation valves (if available).

  • Page 78: Compressor Tasks

    Disconnect all electric power, including remote specialist to determine what water treatment, if any, is disconnects before servicing. Follow proper lockout/ required. Trane assumes no responsibility for tagout procedures to ensure the power can not be equipment failures which result from untreated or inadvertently energized.
  • Page 79 Maintenance Procedures Important: Ensure that there is no secondary power Note: Blanking plates should not be removed from the new source connected to the compressor compressor until you are ready to place the new before disconnecting the I/O cable. compressor in position. New compressors are pressurized with inert gas to 50 psi.

  • Page 80: Chiller Troubleshooting

    Chiller Troubleshooting Chiller in Alarm Avoidance The controller implements a five-stage alarm management strategy in order to stay online as long as possible. The The Chiller Management System continuously monitors for alarm management routine operates as follows: abnormal system conditions such as low suction pressure, high discharge pressure, low leaving temperature, high amp draw and others.
  • Page 81 Chiller Troubleshooting power is restored. This feature assumes a timely power restoration, otherwise, the chiller goes into normal start-up. Table 28. Chiller/Compressor alarms/Faults listing Alarm Warning Circuit Active in Description Start-Up Steady Compressor Code Enable Reset Period Relay Realy System Main switch SYSTEM INTERLOCK...
  • Page 82 Chiller Troubleshooting Table 28. Chiller/Compressor alarms/Faults listing (continued) Alarm Warning Circuit Active in Description Start-Up Steady Compressor Code Enable Reset Period Relay Realy System General high pressure alarm SYSTEM – from AI Genarel high compression ratio SYSTEM – alarm Prevention: low SYSTEM –...
  • Page 83 Chiller Troubleshooting Table 28. Chiller/Compressor alarms/Faults listing (continued) Alarm Warning Circuit Active in Description Start-Up Steady Compressor Code Enable Reset Period Relay Realy System General DI alarm SYSTEM – General AI alarm 1 SYSTEM – General AI alarm 2 SYSTEM –...
  • Page 84 Chiller Troubleshooting Table 28. Chiller/Compressor alarms/Faults listing (continued) Alarm Warning Circuit Active in Description Start-Up Steady Compressor Code Enable Reset Period Relay Realy System Smart Cooler SYSTEM – System Fault Cooling enable off SYSTEM – Scheduled action SYSTEM – Scheduler list SYSTEM –...
  • Page 85 Chiller Troubleshooting Table 28. Chiller/Compressor alarms/Faults listing (continued) Alarm Warning Circuit Active in Description Start-Up Steady Compressor Code Enable Reset Period Relay Realy System TC1 AC - Soft SYSTEM – Start Fault TC1 ANC - Inverter SYSTEM – Temperature TC1 ANC - SYSTEM –...
  • Page 86 Chiller Troubleshooting Table 28. Chiller/Compressor alarms/Faults listing (continued) Alarm Warning Circuit Active in Description Start-Up Steady Compressor Code Enable Reset Period Relay Realy System TC2 AC - Super SYSTEM – Heat Fault TC2 AC - Eart SYSTEM – Leakage Fault TC2 AC - Soft SYSTEM –...
  • Page 87 Chiller Troubleshooting Table 28. Chiller/Compressor alarms/Faults listing (continued) Alarm Warning Circuit Active in Description Start-Up Steady Compressor Code Enable Reset Period Relay Realy System TC3 AC - Lock out SYSTEM – Fault TC3 AC - Motor SYSTEM – Thermistor TC3 ANC - Super SYSTEM –...
  • Page 88 Chiller Troubleshooting Table 28. Chiller/Compressor alarms/Faults listing (continued) Alarm Warning Circuit Active in Description Start-Up Steady Compressor Code Enable Reset Period Relay Realy System TC4 AC - Bearing SYSTEM – Motor Fault TC4 AC - Sensor SYSTEM – error TC4 AC - SCR SYSTEM –...
  • Page 89 Chiller Troubleshooting Table 28. Chiller/Compressor alarms/Faults listing (continued) Alarm Warning Circuit Active in Description Start-Up Steady Compressor Code Enable Reset Period Relay Realy System TC5 AC - Shaft Cavity SYSTEM – Temperature TC5 AC - Leaving SYSTEM – Air /Water TC5 AC - Total Compression SYSTEM...
  • Page 90 Chiller Troubleshooting Table 28. Chiller/Compressor alarms/Faults listing (continued) Alarm Warning Circuit Active in Description Start-Up Steady Compressor Code Enable Reset Period Relay Realy System TC6 AC - Discharge SYSTEM – Pressure TC6 AC - 3 Phase SYSTEM – Current Trip TC6 AC - Shaft Cavity SYSTEM...
  • Page 91 Chiller Troubleshooting Table 28. Chiller/Compressor alarms/Faults listing (continued) Alarm Warning Circuit Active in Description Start-Up Steady Compressor Code Enable Reset Period Relay Realy System Network Error SYSTEM – Master Error SYSTEM – Alarm Node 1 SYSTEM – Alarm Node 2 SYSTEM –...
  • Page 92 For more information, please visit trane.com or tranetechnologies.com. Trane has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

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