Manuals / Trane / Household Appliance / Air Conditioner

Trane LO manual Table of Contents

Models: LO

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Table of Contents

Table of Contents

General Information…3 Cabinet Styles…4

Model Number Description…6 Receiving and Handling…9 Jobsite Storage…10 Installation Considerations…11 Service Access…12 Installation Checklist…13 Vertical Units…15

Installing the Unit…15

Horizontal Units…16 External Insulating Require-

ments…20 Startup Checklist…20

Units with Hydronic Coil Connec- tions Only…21

Piping…21

Units with Steam Coils…22 Factory Piping Package Connec-

tions…24

Installing the Auxiliary Drain Pan…25

Condensate Overflow Detection Device…26

Automatic Changeover Sensor…26 Automatic Electric Heat Lockout

Switch (Fan-coil) …27 Ductwork Recommendations…32 Duct Connections…32

Supply Power Wiring…33

Electrical Connections…33

Wall Mounted Control Interconnec- tion Wiring…35

Electrical Grounding Restric- tions…35

Fan Mode Switch …36 Installation…36

Installing Wall Mounted Con- trols…36

Zone Sensor Installation…37 Fan Mode Switch…39 Tracer® ZN.010 and ZN.510…40 Thermostat Module Operating

Information…41 Binary Inputs…42 Binary Outputs…43 Analog Inputs…44 Fan Mode Switch…44 Zone Sensors…44 Supply Fan Operation…45 LED Activity…46 Troubleshooting…46 Yellow COMM LED…47 Manual Output Test…48 Diagnostics…50 Resetting Diagnostics…51

Troubleshooting …53 Tracer® ZN.520…59 Troubleshooting…83 Troubleshooting…85 Tracer® Communication Wiring

…88

Service Communication Wiring …89

Wall-Mounted Zone Sensor Module…89

TUC Human Interface…90

Cooling and Heating Operation…92 TUC Sequence of Operation…92 Fan Mode Operation…93 Entering Water Temperature

Sampling Function…94 2-Pipe with Auxiliary Electric Heat

(Fan-coils)…94

Fresh Air Damper Options…95 BIP4: Low Temperature Detection

Option…97

BIP3: Condensate Overflow Detection Device…97

BIP4: Smoke Input…98

BIP1: External Interlock…98

BIP3: Occupied/Unoccupied Mode…98

BIP2: Motion Detection…99 Autocycle Test…99 Reading Diagnostics …101 Reading the Operating Machine

State …102

Reading the Operating Control Mode…104

Resetting Diagnostics…107 Diagnostics…107

Unit Mode Listed as Standby…108 Troubleshooting …109 Maintenance Procedures…116 Periodic Maintenance Check-

list…116

Maintenance…116

Inspecting and Cleaning Drain Pans…118

Winterizing the Coil …120 Inspecting and Cleaning Coils…121 Inspecting and Cleaning the

Internal Insulation on Fan- Coils…123

Inspecting and Cleaning the Fan…124

Fan Board Assembly Removal…126 Factory Piping Packages…128 Appendix…128

Typical Wiring Diagrams…129-134

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UNT-IOM-6

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Trane LO manual Table of Contents

Contents

Low Vertical Fan-Coils Sizes UniTrane Fan-CoilRoom ConditionersForce Flo Cabinet Heaters Sizes UNT-IOM-6Table of Contents General Information Model C Cabinet StylesModel A Model EModel M Model HModel K Model Jmodel number Model Number Descriptiondetailed explanation of the Model Number Description UNT-IOM-6UNT-IOM-6 Receiving and Handling UNT-IOM-6Jobsite Storage UNT-IOM-6ο2. Structural Support Installation Considerationsο1. Clearances ο3. LevelConcealed or Vertical Service AccessVertical or Low Vertical Vertical or LowInstallation Checklist ο ο ο Installing the Unit Vertical Unitsfilters in place may cause motor overload Horizontal UnitsCAUTION: All unit panels and filters must be in Cabinet Table 1. Unit Operating Weights, pounds kgUnit ConcealedUNT-IOM-6 Cabinet unitsRecessed units Figure 5. Trim ring assembly installation UNT-IOM-6Startup Checklist External Insulating RequirementsPiping Considerations PipingUnits with Hydronic Coil Connections Only Connecting field piping to coilUnits with Steam Coils UNT-IOM-6UNT-IOM-6 Piping Considerations Factory Piping Package ConnectionsConnecting Water Piping to Factory Piping Package Installing the Auxiliary Drain Pan Connecting the Condensate DrainUNT-IOM-6 Condensate Overflow Detection DeviceAutomatic Changeover Sensor Automatic Electric Heat Lockout Switch Fan-coil Venting the Hydronic Coil UNT-IOM-6Balancing The Manual Circuit Setter Valve If the piping package has modulating valvesUNT-IOM-6 Valve gpm Balancing The Auto- matic Circuit Setter ValveTable 2. Automatic Circuit Setter Flow Rate Range Pressure Drop Range psigDuct Connections Ductwork Recommendations·Vertical cabinet & recessed units Supply Power WiringElectrical Connections ·Vertical concealed & all horizontal units1. Power & ground inside of control box Table 3. Maximum Wiring Distances, ft m Control Interconnection WiringElectrical Grounding Restrictions Wall Mounted Wire Size RangeInstalling Wall Mounted Controls Fan Mode Switch InstallationZone Sensor Installation UNT-IOM-6Wall mounted zone sensor Model # Digit 31 = W Figure 25. Wall mounted zone sensor dimensionsUNT-IOM-6 Split-mountedoptionSequence of Operations Fan Mode SwitchManual Fan Mode Switch Sequence of Operations Tracer ZN.010 and ZN.510Tracer ZN.010 and ZN.510 Operating Information Power-UpSequenceEntering Water Temperature Sampling Function Coil Water TemperatureBIP2: Condensate Overflow Detection Option BIP1: Low Temperature Detection OptionBinary Inputs BIP3: Occupancy SensorTable 5. Occupancy Sensor State Table Binary OutputsTracer ZN.010 and ZN.510 Sensor TypeTracer ZN.010 and ZN.510 Zone Sensors Fan Mode SwitchAnalog Inputs Table 7. Analog Inputs AvailableTracer ZN.010 and ZN.510 Supply Fan OperationDefault Setting Table 8. Fan Mode OperationLED Activity TroubleshootingRed Service LED Table 10. Red Service LED ActivityTracer ZN.010 and ZN.510 Yellow COMM LEDGreen STATUS LED Table 11. Green STATUS LED ActivityTracer ZN.010 and ZN.510 Manual Output Test ProcedureManual Output Test Cool Output Tracer ZN.010 and ZN.510Steps Heat OutputDiagnostic DiagnosticsTable 14. Controller Diagnostics Tracer ZN.010 and ZN.510Cycling Power to the Controller Resetting DiagnosticsAutomatic Reset by the Controller Manual Output TestUNT-IOM-6 Trane’s Service Tool, Rover Alarm ResetTracer ZN.010 and ZN.510 Table 15. Fan Outputs do not Energize TroubleshootingTracer ZN.010 and ZN.510 Probable CauseProbable Cause Tracer ZN.010 and ZN.510Table 16. Valves Stay Closed ExplanationProbable Cause Tracer ZN.010 and ZN.510Table 17. Valves Stay Open ExplanationProbable Cause Tracer ZN.010 and ZN.510Table 18. Electric Heat Not Operating ExplanationProbable Cause Tracer ZN.010 and ZN.510Table 19. Fresh Air Damper Stays Closed ExplanationProbable Cause Tracer ZN.010 and ZN.510Table 20. Fresh Air Damper Stays Open ExplanationTracer ZN.520 Tracer Summit Communication WiringTracer ZN.520 Sequence of OperationsZone Sensors Without Interconnecting Wiring Service Communication WiringWall Mounted Zone Sensor Module Tracer ZN.520Tracer ZN.520 Tracer ZN.520 Unit Start-Up Tracer CommunicationsTracer ZN.520 Sequence of Operation Unoccupied Mode Tracer ZN.520Occupied Occupied Standby ModeOccupancy Sources Tracer ZN.520Occupied Bypass Mode Tracer ZN.520 Tracer Summit With Supply Fan ControlCooling Operation Discharge Air Tempering Heating OperationTracer ZN.520 Fan Mode Operation Tracer ZN.520Table 23. Local fan switch enabled Table 21. Fan ConfigurationFan speed default Fan switch localTracer ZN.520 Continuous Fan Operation Fan Cycling OperationFan Off Delay HeatingFan Start on High Speed Entering Water Temperature Sampling FunctionTracer ZN.520 Heating or Cooling RequiredElectric Heat Operation Fresh Air Damper OptionsTracer ZN.520 Manualand Damper Position Tracer ZN.520Economizer Damper Outdoor Air TempDehumidification Data SharingTracer ZN.520 Binary InputsTracer ZN.520 Table 26. Binary Input ConfigurationsConfiguration BinaryTracer ZN.520 Table 27. Binary Output ConfigurationConfiguration Binary OutputsDescription Tracer ZN.520Analog Inputs Table 28. Analog Inputs TerminalsExternal Setpoint Adjustment Zone SensorSpace Temperature Measurement Tracer ZN.520UNT-IOM-6 Fan Switch On/Cancel ButtonsTracer ZN.520 Tracer ZN.520 CommunicationsTable 29. Zone sensor wiring connections TB1 DescriptionDiagnostic DiagnosticsTable 30. Tracer ZN.520 Diagnostics Tracer ZN.520Tracer ZN.520 Translating Multiple DiagnosticsResetting Diagnostics Tracer ZN.520 UNT-IOM-6Red Service LED LED OperationTable 31. Red Service LED Activity Tracer ZN.520Green Status LED Yellow Comm LED TroubleshootingTracer ZN.520 Table 32. Green Status LED activityLED Operation Tracer ZN.520Manual Output Test Test Sequence Table 34. Test SequenceTable 35. Fan outputs do not energize TroubleshootingTracer ZN.520 Probable CauseProbable Cause Tracer ZN.520Table 36. Valves Stay Closed ExplanationTerminal Unit Control TUC TUC Sequence of OperationsTracer Communication Wiring Terminal Unit Control TUCTerminal Unit Controller Start-Up Service Communication Wiring Wall-MountedZone Sensor Module Zone sensors without interconnecting wiringTUC Human Interface Terminal Unit Control TUCTerminal Unit Control TUC DIP Switch PositionDIP Switch Position Table 37. Valid TUC AddressesSetpoint Control TUC Sequence of OperationCooling and Heating Operation Terminal Unit Control TUCOff Position Terminal Unit Control TUCFan Mode Operation High, Medium, or Low PostionCoil Water Temperature 2-Pipewith Auxiliary Electric Heat Fan-coilsEntering Water Temperature Sampling Function Terminal Unit Control TUCTerminal Unit Control TUC ManualAuto 2-Position Economizer Fresh Air Damper OptionsTerminal Unit Control TUC UNT-IOM-6UNT-IOM-6 BIP4 Low Temperature Detection OptionBIP3: Condensate Overflow Detection Device Terminal Unit Control TUC BIP4: Smoke Input BIP3: Occupied/ Unoccupied ModeBIP1: External Interlock UNT-IOM-6BIP2 Motion Detection Autocycle Test Terminal Unit Control TUCTerminal Unit Control TUC Terminal Unit Control TUC Reading Diagnosticsϒ ϒ ϒ ϒ λ ϒ ϒ ϒ λ ϒ λ λ SequenceReading the Operating Machine State Terminal Unit Control TUCTerminal Unit Control TUC ϒ ϒ ϒ ϒ ϒ ϒ ϒ λReading the Operating Control Mode Terminal Unit Control TUCTerminal Unit Control TUC ϒ ϒ ϒ ϒ ϒ ϒ ϒ ϒ ϒ ϒ λ ϒTerminal Unit Control TUC ϒ ϒ ϒ ϒResetting Diagnostics Using the Zone Sensor Using EverywareSoftwareDiagnostics Table 43. TUC Controller DiagnosticsUnit Mode Listed as Standby Cycling Power to the TUCUsing Tracer 100i or 100L Using Tracer Summit Terminal Unit Control TUCTable 44. TUC Does Not Communicate TroubleshootingTerminal Unit Control TUC Probable CauseProbable Cause Terminal Unit Control TUCTable 45-Continued.Fan Outputs not Energizing ExplanationProbable Cause Terminal Unit Control TUCTable 46—Continued.Valves Closed ExplanationProbable Cause Terminal Unit Control TUCTable 48. Electric Heat Not Operating ExplanationProbable Cause Terminal Unit Control TUCTable 49. Fresh Air Damper Closed ExplanationTable 50. Fresh Air Damper Open Table 51. Zone Temperature Too WarmTerminal Unit Control TUC Probable CauseExplanation Table 52. Zone Temperature Too CoolProbable Cause Maintenance Procedures MaintenancePeriodic Maintenance Checklist FiltersFresh Air Filter Unit sizeMain Filter Inspecting and Cleaning Drain Pans Auxiliary Drain Pan Main Drain PanVertical units Winterizing the CoilHorizontal units Inspecting and Cleaning Coils Steam and Water CoilsUnit Size VolumePiping Package Total # Rows1.Disconnect all electrical power to the unit Inspecting and Cleaning the Fan UNT-IOM-6 Vertical Units Fan Board Assembly RemovalReplacing the Motor Horizontal UnitsProblem Control Device ReplacementTable 56. Trouble Shooting Possible CauseAppendix Factory Piping PackagesFan Mode Switch Typical Wiring Diagram For reference onlyTracer ZN.010 Typical Wiring Diagram For Reference OnlyElectric heat contactor Tracer ZN.010 Typical Wiring DiagramFor Reference Only Four-pipe Two-positionN/C cooling control valve Tracer ZN.010 Typical Wiring DiagramFor Reference Only TUC Typical Wiring Diagram For Reference OnlyUNT-IOM-6 TUC Typical Wiring DiagramFor Reference Only Page Literature Order Number The Trane CompanyAn American Standard Company UNT-IOM-6