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Trane LO manual Model Number Description, UNT-IOM-6

Models: LO

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Model Number Description

Model Number Description

Digits 1 & 2 Unit Type

FC

FF

Digit 3 Model

AVertical concealed

BVertical cabinet

CHorizontal concealed

DHorizontal cabinet

EHorizontal recessed

FVertical wall hung*

H Vertical recessed

JVertical slope top

KLow vertical concealed

LLow vertical cabinet

MInverted vertical cabinet*

N Inverted vertical recessed*

Digit 4 Development Sequence

B

Digits 5–7 Unit Size

020	200 cfm
030	300 cfm
040	400 cfm
060	600 cfm
080	800 cfm
100	1000	cfm
120	1200	cfm

Digit 8 Unit Voltage

1115/60/1

2208/60/1

3277/60/1

4230/60/1

5208/60/3

6230/6j0/3

7480/60/3

8110-120/50/1

9220-240/50/1

A220-240/50/3

B 380-415/50/3

Digit 9 Piping System Placement

AW/o piping, RH conn., w/o aux. drain pan

BW/o piping, LH conn.,

w/o aux. drain pan

CW/o piping, RH conn., w/ aux. drain pan

DW/o piping, LH conn., w/ aux. drain pan

EW/o piping, RH conn.,

w/o aux. drain pan, ext. end pocket

FW/o piping, LH conn.,

w/o aux. drain

GW/o piping, RH conn., w/ aux. drain pan,

ext. end pocket

HW/o piping, LH conn.,

w/ aux. drain pan, ext. end pocket

JWith piping, RH

KWith piping, LH

LWith piping, RH, ext. end pocket

M With piping, RH, ext. end pocket

Digits 10 & 11 Design Sequence

LO

Digit 12 Inlet

AFront toe space

BFront bar grille

CFront stamped louver

D Bottom stamped louver

E Bottom toe space

FBack duct collar

GOpen return

HBack stamped louver

Digit 13 Fresh Air Damper

0None

AManual, bottom opening

BManual, back opening

CManual, top opening

DAuto, 2 pos., bottom opening

EAuto, 2 pos., back opening

FAuto, 2 pos. top opening

GAuto, economizer,

bottom opening

HAuto, economizer, back opening

JAuto, economizer, top opening

KNo damper, bottom opening

LNo damper, back opening

MNo damper, top opening

Digit 14 Outlet

AFront duct collar

BFront bar grille

CFront stamped louver

DFront quad grille

E Bottom duct collar

F Bottom stamped louver

GTop quad grille

HTop bar grille

JTop duct collar

KBottom bar grille

Digit 15 Color

0None

1Deluxe beige

2Soft dove

3Cameo white

4 Driftwood grey

5Stone grey

6 Rose mauve

Digit 16 Tamperproof Locks & Leveling Feet

0None

AKeylock panel

BKeylock access door

CKeylock panel & access door

D Leveling feet

E Keylock panel with leveling feet

F Keylock access door w/leveling feet

GKeylock panel & access door w/leveling feet

Digit 17 Motor

AFree discharge

BHigh static

Digit 18 Coil

A2 row cooling/heating

B3 row cooling/heating

C4 row cooling/heating

D2 row cooling, 1 row heating

E2 row cooling, 2 row heating

F3 row cooling, 1 row heating

G2 row cooling or heating only

H3 row cooling or heating only

J4 row cooling or heating only

K2 row cooling/heating, elec. heat

L3 row cooling/heating, elec. heat

M4 row cooling/heating, elec. heat

NElectric heat only, 1 stage

P2 row cooling/heating,

1 row heating

Q2 row cooling/heating,

2 row heating

R3 row cooling/heating,

1 row heating

UElectric heat only, 2 stage

VElectric heat only, low kw, 1 stage

WSteam coil

Digit 19 Coil Fin Series

2144

Digit 20 Air Vent

AAutomatic

M Manual

Digits 21, 22, & 23 Electric Heat kW [208 V kW derate in brackets]

000	None
010	1.0	[0.75]
015	1.5	[1.1]
020	2.0	[1.5]
025	2.5	[1.9]
030	3.0	[2.2]
040	4.0	[3.0]
045	4.5	[3.3]
050	5.0	[3.7]
060	6.0	[4.4]
070	7.0	[5.3]
075	7.5	[5.7]

0808.0 [6.0]

10010.0

105	10.5 [7.9]

11011.0 [9.0]

12012.0

13513.5 [10.2]

15015.0

180	18.0	[13.5]
200	20.0	[15.0]

*Force Flo™ cabinet heater only

UNT-IOM-6

7

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Trane LO manual Model Number Description, UNT-IOM-6

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 Mdetailed explanation of the Model Number Descriptionmodel 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 UnitCAUTION: All unit panels and filters must be in Horizontal Unitsfilters in place may cause motor overload Concealed Table 1. Unit Operating Weights, pounds kgUnit CabinetRecessed units Cabinet 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 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 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 = WManual Fan Mode Switch Fan Mode SwitchSequence of Operations Tracer ZN.010 and ZN.510 Tracer ZN.010 and ZN.510Sequence of Operations Tracer ZN.010 and ZN.510 Power-UpSequenceOperating Information Entering Water Temperature Sampling FunctionBIP3: Occupancy Sensor Binary InputsBIP1: Low Temperature Detection Option 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 Manual Output Test ProcedureTracer 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 ControllerTracer ZN.010 and ZN.510 Trane’s Service Tool, Rover Alarm ResetUNT-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 Sequence of Operation Tracer ZN.520 Unit Start-Up Tracer CommunicationsTracer ZN.520 Occupied Standby Mode Tracer ZN.520Occupied Unoccupied 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 switch local Table 21. Fan ConfigurationFan speed default Table 23. Local fan switch enabledHeating Continuous Fan Operation Fan Cycling OperationTracer ZN.520 Fan Off DelayHeating 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 DescriptionSpace Temperature Measurement Zone SensorExternal Setpoint Adjustment Tracer ZN.520Tracer ZN.520 Fan Switch On/Cancel ButtonsUNT-IOM-6 TB1 Description CommunicationsTable 29. Zone sensor wiring connections Tracer ZN.520Tracer ZN.520 DiagnosticsTable 30. Tracer ZN.520 Diagnostics DiagnosticResetting Diagnostics Translating Multiple 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 PositionUnit Type 2-Pipewith Auxiliary Electric Heat Fan-coilsTerminal Unit Control TUC Entering Water Temperature Sampling FunctionFresh Air Damper Options ManualAuto 2-Position Economizer Terminal Unit Control TUCUNT-IOM-6 Terminal Unit Control TUCBIP3: Condensate Overflow Detection Device BIP4 Low Temperature Detection OptionUNT-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 CauseExplanation Terminal Unit Control TUCTable 50. Fresh Air Damper Open Probable CauseProbable Cause Table 52. Zone Temperature Too CoolExplanation Filters MaintenancePeriodic Maintenance Checklist Maintenance ProceduresMain 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 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 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 UNT-IOM-6 The Trane CompanyAn American Standard Company Literature Order Number