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Trane LO manual Manual Fan Mode Switch, Sequence of Operations

Models: LO

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Fan Mode Switch

Manual Fan Mode Switch

The manual fan mode switch is available for fan-coil units that do not have Trane factory-mounted control packages. This four-position switch (off-hi-med-lo) allows manual fan mode selection and is available unit or wall mounted.

The unit-mounted option (Digit 31 = D) operates on line voltage. The wall-mounted option (Digit 31 = K) is low-voltage and has three 24 volt relays using a factory-wired transformer and relays to control the fan motor.

Sequence of Operations

Off: Fan is turned off, two-position damper option spring-returns closed.

Hi, Med, Lo: Fan runs continuously at the selected speed. The two- position damper option opens to an adjustable mechanical stop- position.

UNT-IOM-6

Page 39

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Trane LO manual Manual Fan Mode Switch, Sequence of Operations

Contents

UNT-IOM-6 UniTrane Fan-CoilRoom ConditionersForce Flo Cabinet Heaters Sizes Low Vertical Fan-Coils SizesTable of Contents General Information Model E Cabinet StylesModel A Model CModel J Model HModel K Model MModel Number Description detailed explanation of themodel number UNT-IOM-6 Model Number DescriptionUNT-IOM-6 UNT-IOM-6 Receiving and HandlingUNT-IOM-6 Jobsite Storageο3. Level Installation Considerationsο1. Clearances ο2. Structural SupportVertical or Low Service AccessVertical or Low Vertical Concealed or VerticalInstallation Checklist ο ο ο Vertical Units Installing the UnitHorizontal Units CAUTION: All unit panels and filters must be infilters in place may cause motor overload Concealed Table 1. Unit Operating Weights, pounds kgUnit CabinetCabinet units Recessed unitsUNT-IOM-6 UNT-IOM-6 Figure 5. Trim ring assembly installationExternal Insulating Requirements Startup ChecklistConnecting field piping to coil PipingUnits with Hydronic Coil Connections Only Piping ConsiderationsUNT-IOM-6 Units with Steam CoilsUNT-IOM-6 Factory Piping Package Connections Connecting Water Piping to Factory Piping PackagePiping Considerations Connecting the Condensate Drain Installing the Auxiliary Drain PanCondensate Overflow Detection Device Automatic Changeover SensorUNT-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 Pressure Drop Range psig Balancing The Auto- matic Circuit Setter ValveTable 2. Automatic Circuit Setter Flow Rate Range Valve gpmDuctwork Recommendations Duct Connections·Vertical concealed & all horizontal units Supply Power WiringElectrical Connections ·Vertical cabinet & recessed units1. Power & ground inside of control box Wire Size Range Control Interconnection WiringElectrical Grounding Restrictions Wall Mounted Table 3. Maximum Wiring Distances, ft mFan Mode Switch Installation Installing Wall Mounted ControlsUNT-IOM-6 Zone Sensor InstallationSplit-mountedoption Figure 25. Wall mounted zone sensor dimensionsUNT-IOM-6 Wall mounted zone sensor Model # Digit 31 = WFan Mode Switch Manual Fan Mode SwitchSequence of Operations Tracer ZN.010 and ZN.510 Tracer ZN.010 and ZN.510Sequence of Operations Coil Water Temperature Power-UpSequenceEntering Water Temperature Sampling Function Operating InformationBIP3: Occupancy Sensor BIP1: Low Temperature Detection OptionBinary Inputs BIP2: Condensate Overflow Detection OptionSensor Type Binary OutputsTracer ZN.010 and ZN.510 Table 5. Occupancy Sensor State TableTable 7. Analog Inputs Available Zone Sensors Fan Mode SwitchAnalog Inputs Tracer ZN.010 and ZN.510Table 8. Fan Mode Operation Supply Fan OperationDefault Setting Tracer ZN.010 and ZN.510Table 10. Red Service LED Activity TroubleshootingRed Service LED LED ActivityTable 11. Green STATUS LED Activity Yellow COMM LEDGreen STATUS LED Tracer ZN.010 and ZN.510Manual Output Test Procedure Manual Output TestTracer ZN.010 and ZN.510 Heat Output Tracer ZN.010 and ZN.510Steps Cool OutputTracer ZN.010 and ZN.510 DiagnosticsTable 14. Controller Diagnostics DiagnosticManual Output Test Resetting DiagnosticsAutomatic Reset by the Controller Cycling Power to the ControllerTrane’s Service Tool, Rover Alarm Reset Tracer ZN.010 and ZN.510UNT-IOM-6 Probable Cause TroubleshootingTracer ZN.010 and ZN.510 Table 15. Fan Outputs do not EnergizeExplanation Tracer ZN.010 and ZN.510Table 16. Valves Stay Closed Probable CauseExplanation Tracer ZN.010 and ZN.510Table 17. Valves Stay Open Probable CauseExplanation Tracer ZN.010 and ZN.510Table 18. Electric Heat Not Operating Probable CauseExplanation Tracer ZN.010 and ZN.510Table 19. Fresh Air Damper Stays Closed Probable CauseExplanation Tracer ZN.010 and ZN.510Table 20. Fresh Air Damper Stays Open Probable CauseSequence of Operations Tracer Summit Communication WiringTracer ZN.520 Tracer ZN.520Tracer ZN.520 Service Communication WiringWall Mounted Zone Sensor Module Zone Sensors Without Interconnecting WiringTracer ZN.520 Unit Start-Up Tracer Communications Tracer ZN.520 Sequence of OperationTracer ZN.520 Occupied Standby Mode Tracer ZN.520Occupied Unoccupied ModeTracer ZN.520 Occupied Bypass ModeOccupancy Sources Tracer Summit With Supply Fan Control Cooling OperationTracer ZN.520 Heating Operation Tracer ZN.520Discharge Air Tempering Tracer ZN.520 Fan Mode OperationFan switch local Table 21. Fan ConfigurationFan speed default Table 23. Local fan switch enabledHeating Continuous Fan Operation Fan Cycling OperationFan Off Delay Tracer ZN.520Heating or Cooling Required Entering Water Temperature Sampling FunctionTracer ZN.520 Fan Start on High SpeedManual Fresh Air Damper OptionsTracer ZN.520 Electric Heat OperationOutdoor Air Temp Tracer ZN.520Economizer Damper and Damper PositionBinary Inputs Data SharingTracer ZN.520 DehumidificationBinary Table 26. Binary Input ConfigurationsConfiguration Tracer ZN.520Binary Outputs Table 27. Binary Output ConfigurationConfiguration Tracer ZN.520Terminals Tracer ZN.520Analog Inputs Table 28. Analog Inputs DescriptionTracer ZN.520 Zone SensorSpace Temperature Measurement External Setpoint AdjustmentFan Switch On/Cancel Buttons Tracer ZN.520UNT-IOM-6 TB1 Description CommunicationsTable 29. Zone sensor wiring connections Tracer ZN.520Tracer ZN.520 DiagnosticsTable 30. Tracer ZN.520 Diagnostics DiagnosticTranslating Multiple Diagnostics Resetting DiagnosticsTracer ZN.520 UNT-IOM-6 Tracer ZN.520Tracer ZN.520 LED OperationTable 31. Red Service LED Activity Red Service LEDTable 32. Green Status LED activity TroubleshootingTracer ZN.520 Green Status LED Yellow Comm LEDTest Sequence Table 34. Test Sequence Tracer ZN.520Manual Output Test LED OperationProbable Cause TroubleshootingTracer ZN.520 Table 35. Fan outputs do not energizeExplanation Tracer ZN.520Table 36. Valves Stay Closed Probable CauseTUC Sequence of Operations Terminal Unit Control TUCTerminal Unit Control TUC Tracer Communication WiringZone sensors without interconnecting wiring Service Communication Wiring Wall-MountedZone Sensor Module Terminal Unit Controller Start-UpTerminal Unit Control TUC TUC Human InterfaceTable 37. Valid TUC Addresses DIP Switch PositionDIP Switch Position Terminal Unit Control TUCTerminal Unit Control TUC TUC Sequence of OperationCooling and Heating Operation Setpoint ControlHigh, Medium, or Low Postion Terminal Unit Control TUCFan Mode Operation Off PositionTerminal Unit Control TUC 2-Pipewith Auxiliary Electric Heat Fan-coilsEntering Water Temperature Sampling Function Coil Water TemperatureFresh Air Damper Options ManualAuto 2-Position Economizer Terminal Unit Control TUCUNT-IOM-6 Terminal Unit Control TUCBIP4 Low Temperature Detection Option BIP3: Condensate Overflow Detection DeviceUNT-IOM-6 UNT-IOM-6 BIP4: Smoke Input BIP3: Occupied/ Unoccupied ModeBIP1: External Interlock Terminal Unit Control TUCTerminal Unit Control TUC BIP2 Motion Detection Autocycle TestTerminal Unit Control TUC Sequence Reading Diagnosticsϒ ϒ ϒ ϒ λ ϒ ϒ ϒ λ ϒ λ λ Terminal Unit Control TUCTerminal 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 TUCTable 43. TUC Controller Diagnostics Using the Zone Sensor Using EverywareSoftwareDiagnostics Resetting DiagnosticsTerminal Unit Control TUC Cycling Power to the TUCUsing Tracer 100i or 100L Using Tracer Summit Unit Mode Listed as StandbyProbable Cause TroubleshootingTerminal Unit Control TUC Table 44. TUC Does Not CommunicateExplanation Terminal Unit Control TUCTable 45-Continued.Fan Outputs not Energizing Probable CauseExplanation Terminal Unit Control TUCTable 46—Continued.Valves Closed Probable CauseExplanation Terminal Unit Control TUCTable 48. Electric Heat Not Operating Probable CauseExplanation Terminal Unit Control TUCTable 49. Fresh Air Damper Closed Probable CauseProbable Cause Table 51. Zone Temperature Too WarmTerminal Unit Control TUC Table 50. Fresh Air Damper OpenTable 52. Zone Temperature Too Cool Probable CauseExplanation Filters MaintenancePeriodic Maintenance Checklist Maintenance ProceduresUnit size Main FilterFresh Air Filter Inspecting and Cleaning Drain Pans Main Drain Pan Auxiliary Drain PanWinterizing the Coil Horizontal unitsVertical units Steam and Water Coils Inspecting and Cleaning CoilsTotal # Rows VolumePiping Package Unit Size1.Disconnect all electrical power to the unit Inspecting and Cleaning the Fan UNT-IOM-6 Horizontal Units Fan Board Assembly RemovalReplacing the Motor Vertical UnitsPossible Cause Control Device ReplacementTable 56. Trouble Shooting ProblemFactory Piping Packages AppendixFor reference only Fan Mode Switch Typical Wiring DiagramFor Reference Only Tracer ZN.010 Typical Wiring DiagramTracer ZN.010 Typical Wiring Diagram For Reference OnlyElectric heat contactor Tracer ZN.010 Typical Wiring Diagram For Reference OnlyFour-pipe Two-positionN/C cooling control valve For Reference Only TUC Typical Wiring DiagramTUC Typical Wiring Diagram For Reference OnlyUNT-IOM-6 Page UNT-IOM-6 The Trane CompanyAn American Standard Company Literature Order Number