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Trane LO manual TUC Typical Wiring Diagram, For Reference Only

Models: LO

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TUC Typical Wiring Diagram

For Reference Only:

This schematic shows typical wiring of a fan-coil. It is not intended for a basis of design or for equipment installation purposes in the field. For an as-built schematic specific to a particular unit, please see the ship-with schematic for that specific unit or contact your local Trane representative.

Two-pipe unit with a modulating valve Electric heat

terminal unit controller

Wall mounted zone sensor — off/auto/high/med/low Disconnect switch

Automatic two-position fresh air damper Low temperature detection Condensate overflow detection

UNT-IOM-6

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Page 133

Image 133

Trane LO manual TUC Typical Wiring Diagram, For Reference Only

Contents

Force Flo Cabinet Heaters Sizes UniTrane Fan-CoilRoom ConditionersLow Vertical Fan-Coils Sizes UNT-IOM-6Table of Contents General Information Model A Cabinet StylesModel C Model EModel K Model HModel M Model Jdetailed explanation of the Model Number Descriptionmodel number UNT-IOM-6 Model Number DescriptionUNT-IOM-6 UNT-IOM-6 Receiving and HandlingUNT-IOM-6 Jobsite Storageο1. Clearances Installation Considerationsο2. Structural Support ο3. LevelVertical or Low Vertical Service AccessConcealed or Vertical Vertical or LowInstallation Checklist ο ο ο Vertical Units Installing the UnitCAUTION: All unit panels and filters must be in Horizontal Unitsfilters in place may cause motor overload Unit Table 1. Unit Operating Weights, pounds kgCabinet ConcealedRecessed units Cabinet unitsUNT-IOM-6 UNT-IOM-6 Figure 5. Trim ring assembly installationExternal Insulating Requirements Startup ChecklistUnits with Hydronic Coil Connections Only PipingPiping Considerations Connecting field piping to coilUNT-IOM-6 Units with Steam CoilsUNT-IOM-6 Connecting Water Piping to Factory Piping Package Factory Piping Package ConnectionsPiping Considerations Connecting the Condensate Drain Installing the Auxiliary Drain PanAutomatic Changeover Sensor Condensate Overflow Detection DeviceUNT-IOM-6 Automatic Electric Heat Lockout Switch Fan-coil UNT-IOM-6 Venting the Hydronic CoilIf the piping package has modulating valves Balancing The Manual Circuit Setter ValveUNT-IOM-6 Table 2. Automatic Circuit Setter Flow Rate Range Balancing The Auto- matic Circuit Setter ValveValve gpm Pressure Drop Range psigDuctwork Recommendations Duct ConnectionsElectrical Connections Supply Power Wiring·Vertical cabinet & recessed units ·Vertical concealed & all horizontal units1. Power & ground inside of control box Electrical Grounding Restrictions Wall Mounted Control Interconnection WiringTable 3. Maximum Wiring Distances, ft m Wire Size RangeFan Mode Switch Installation Installing Wall Mounted ControlsUNT-IOM-6 Zone Sensor InstallationUNT-IOM-6 Figure 25. Wall mounted zone sensor dimensionsWall mounted zone sensor Model # Digit 31 = W Split-mountedoptionManual Fan Mode Switch Fan Mode SwitchSequence of Operations Tracer ZN.010 and ZN.510 Tracer ZN.010 and ZN.510Sequence of Operations Entering Water Temperature Sampling Function Power-UpSequenceOperating Information Coil Water TemperatureBinary Inputs BIP1: Low Temperature Detection OptionBIP2: Condensate Overflow Detection Option BIP3: Occupancy SensorTracer ZN.010 and ZN.510 Binary OutputsTable 5. Occupancy Sensor State Table Sensor TypeAnalog Inputs Zone Sensors Fan Mode SwitchTracer ZN.010 and ZN.510 Table 7. Analog Inputs AvailableDefault Setting Supply Fan OperationTracer ZN.010 and ZN.510 Table 8. Fan Mode OperationRed Service LED TroubleshootingLED Activity Table 10. Red Service LED ActivityGreen STATUS LED Yellow COMM LEDTracer ZN.010 and ZN.510 Table 11. Green STATUS LED ActivityManual Output Test Manual Output Test ProcedureTracer ZN.010 and ZN.510 Steps Tracer ZN.010 and ZN.510Cool Output Heat OutputTable 14. Controller Diagnostics DiagnosticsDiagnostic Tracer ZN.010 and ZN.510Automatic Reset by the Controller Resetting DiagnosticsCycling Power to the Controller Manual Output TestTracer ZN.010 and ZN.510 Trane’s Service Tool, Rover Alarm ResetUNT-IOM-6 Tracer ZN.010 and ZN.510 TroubleshootingTable 15. Fan Outputs do not Energize Probable CauseTable 16. Valves Stay Closed Tracer ZN.010 and ZN.510Probable Cause ExplanationTable 17. Valves Stay Open Tracer ZN.010 and ZN.510Probable Cause ExplanationTable 18. Electric Heat Not Operating Tracer ZN.010 and ZN.510Probable Cause ExplanationTable 19. Fresh Air Damper Stays Closed Tracer ZN.010 and ZN.510Probable Cause ExplanationTable 20. Fresh Air Damper Stays Open Tracer ZN.010 and ZN.510Probable Cause ExplanationTracer ZN.520 Tracer Summit Communication WiringTracer ZN.520 Sequence of OperationsWall Mounted Zone Sensor Module Service Communication WiringZone Sensors Without Interconnecting Wiring Tracer ZN.520Tracer ZN.520 Sequence of Operation Tracer ZN.520 Unit Start-Up Tracer CommunicationsTracer ZN.520 Occupied Tracer ZN.520Unoccupied Mode Occupied Standby ModeOccupied Bypass Mode Tracer ZN.520Occupancy Sources Cooling Operation Tracer Summit With Supply Fan ControlTracer ZN.520 Tracer ZN.520 Heating OperationDischarge Air Tempering Tracer ZN.520 Fan Mode OperationFan speed default Table 21. Fan ConfigurationTable 23. Local fan switch enabled Fan switch localFan Off Delay Continuous Fan Operation Fan Cycling OperationTracer ZN.520 HeatingTracer ZN.520 Entering Water Temperature Sampling FunctionFan Start on High Speed Heating or Cooling RequiredTracer ZN.520 Fresh Air Damper OptionsElectric Heat Operation ManualEconomizer Damper Tracer ZN.520and Damper Position Outdoor Air TempTracer ZN.520 Data SharingDehumidification Binary InputsConfiguration Table 26. Binary Input ConfigurationsTracer ZN.520 BinaryConfiguration Table 27. Binary Output ConfigurationTracer ZN.520 Binary OutputsAnalog Inputs Table 28. Analog Inputs Tracer ZN.520Description TerminalsSpace Temperature Measurement Zone SensorExternal Setpoint Adjustment Tracer ZN.520Tracer ZN.520 Fan Switch On/Cancel ButtonsUNT-IOM-6 Table 29. Zone sensor wiring connections CommunicationsTracer ZN.520 TB1 DescriptionTable 30. Tracer ZN.520 Diagnostics DiagnosticsDiagnostic Tracer ZN.520Resetting Diagnostics Translating Multiple DiagnosticsTracer ZN.520 UNT-IOM-6 Tracer ZN.520Table 31. Red Service LED Activity LED OperationRed Service LED Tracer ZN.520Tracer ZN.520 TroubleshootingGreen Status LED Yellow Comm LED Table 32. Green Status LED activityManual Output Test Tracer ZN.520LED Operation Test Sequence Table 34. Test SequenceTracer ZN.520 TroubleshootingTable 35. Fan outputs do not energize Probable CauseTable 36. Valves Stay Closed Tracer ZN.520Probable Cause ExplanationTUC Sequence of Operations Terminal Unit Control TUCTerminal Unit Control TUC Tracer Communication WiringZone Sensor Module Service Communication Wiring Wall-MountedTerminal Unit Controller Start-Up Zone sensors without interconnecting wiringTerminal Unit Control TUC TUC Human InterfaceDIP Switch Position DIP Switch PositionTerminal Unit Control TUC Table 37. Valid TUC AddressesCooling and Heating Operation TUC Sequence of OperationSetpoint Control Terminal Unit Control TUCFan Mode Operation Terminal Unit Control TUCOff Position High, Medium, or Low PostionEntering Water Temperature Sampling Function 2-Pipewith Auxiliary Electric Heat Fan-coilsCoil Water Temperature Terminal Unit Control TUCAuto 2-Position Economizer ManualTerminal Unit Control TUC Fresh Air Damper OptionsUNT-IOM-6 Terminal Unit Control TUCBIP3: Condensate Overflow Detection Device BIP4 Low Temperature Detection OptionUNT-IOM-6 BIP1: External Interlock BIP4: Smoke Input BIP3: Occupied/ Unoccupied ModeTerminal Unit Control TUC UNT-IOM-6Terminal Unit Control TUC BIP2 Motion Detection Autocycle TestTerminal Unit Control TUC ϒ ϒ ϒ ϒ λ ϒ ϒ ϒ λ ϒ λ λ Reading DiagnosticsTerminal Unit Control TUC SequenceTerminal Unit Control TUC Reading the Operating Machine Stateϒ ϒ ϒ ϒ ϒ ϒ ϒ λ Terminal Unit Control TUCTerminal Unit Control TUC Reading the Operating Control Modeϒ ϒ ϒ ϒ ϒ ϒ ϒ ϒ ϒ ϒ λ ϒ Terminal Unit Control TUCϒ ϒ ϒ ϒ Terminal Unit Control TUCDiagnostics Using the Zone Sensor Using EverywareSoftwareResetting Diagnostics Table 43. TUC Controller DiagnosticsUsing Tracer 100i or 100L Using Tracer Summit Cycling Power to the TUCUnit Mode Listed as Standby Terminal Unit Control TUCTerminal Unit Control TUC TroubleshootingTable 44. TUC Does Not Communicate Probable CauseTable 45-Continued.Fan Outputs not Energizing Terminal Unit Control TUCProbable Cause ExplanationTable 46—Continued.Valves Closed Terminal Unit Control TUCProbable Cause ExplanationTable 48. Electric Heat Not Operating Terminal Unit Control TUCProbable Cause ExplanationTable 49. Fresh Air Damper Closed Terminal Unit Control TUCProbable Cause ExplanationTerminal Unit Control TUC Table 51. Zone Temperature Too WarmTable 50. Fresh Air Damper Open Probable CauseProbable Cause Table 52. Zone Temperature Too CoolExplanation Periodic Maintenance Checklist MaintenanceMaintenance Procedures FiltersMain Filter Unit sizeFresh Air Filter Inspecting and Cleaning Drain Pans Main Drain Pan Auxiliary Drain PanHorizontal units Winterizing the CoilVertical units Steam and Water Coils Inspecting and Cleaning CoilsPiping Package VolumeUnit Size Total # Rows1.Disconnect all electrical power to the unit Inspecting and Cleaning the Fan UNT-IOM-6 Replacing the Motor Fan Board Assembly RemovalVertical Units Horizontal UnitsTable 56. Trouble Shooting Control Device ReplacementProblem Possible CauseFactory Piping Packages AppendixFor reference only Fan Mode Switch Typical Wiring DiagramFor Reference Only Tracer ZN.010 Typical Wiring DiagramFor Reference Only Tracer ZN.010 Typical Wiring DiagramElectric heat contactor For Reference Only Tracer ZN.010 Typical Wiring DiagramFour-pipe Two-positionN/C cooling control valve For Reference Only TUC Typical Wiring DiagramFor Reference Only TUC Typical Wiring DiagramUNT-IOM-6 Page An American Standard Company The Trane CompanyLiterature Order Number UNT-IOM-6