Manuals / Trane / Household Appliance / Air Conditioner

Trane LO manual UNT-IOM-6

Models: LO

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Digit 24 Reheat

0None

ASteam

BHot water

Digit 25 Disconnect Switch

0None

DWith disconnect

Digit 26 Filter

0None

11” TA

21” TA pltd. media

31” TA + 1 extra

41” TA pltd. media + 1 extra

51” TA + 2 extra

61” TA pltd. media + 2 extra

71” TA + 3 extra

81” TA pltd. media + 3 extra

Digit 27 Main Control Valve

0None

A2 way, 2 pos., N.O. (25 psig)

B3 way, 2 pos., N.O. (30 psig)

C2 way, 2 pos., N.C. (25 psig)

D3 way, 2 pos., N.C. (15 psig)

E2 way, 2 pos., N.O. (50 psig)

F3 way, 2 pos., N.O. (50 psig)

G2 way, 2 pos., N.C. (50 psig)

H3 way, 2 pos., N.C. (50 psig)

J2 way, mod., Cv = 0.7 (50 psig)

K3 way, mod., Cv = 0.7 (50 psig)

L2 way, mod., Cv = 1.5 (50 psig)

M3 way, mod., Cv = 1.5 (50 psig)

N2 way, mod., Cv = 2.5 (50 psig)

P3 way, mod., Cv = 2.5 (50 psig)

Q2 way, mod., Cv = 4.0 (50 psig)

R3 way, mod., Cv = 4.0 (50 psig)

Digit 28 Auxiliary Control Valve

0None

A2 way, 2 pos., N.O. (25 psig)

B3 way, 2 pos., N.O. (30 psig)

C2 way, 2 pos., N.C. (25 psig)

D3 way, 2 pos., N.C. (15 psig)

E2 way, 2 pos., N.O. (50 psig)

F3 way, 2 pos., N.O. (50 psig)

G2 way, 2 pos., N.C. (50 psig)

H3 way, 2 pos., N.C. (50 psig)

J2 way, mod., Cv = 0.7 (50 psig)

K3 way, mod., Cv = 0.7 (50 psig)

L2 way, mod., Cv = 1.5 (50 psig)

M3 way, mod., Cv = 1.5 (50 psig)

N2 way, mod., Cv = 2.5 (50 psig)

P3 way, mod., Cv = 2.5 (50 psig)

Q2 way, mod., Cv = 4.0 (50 psig)

R3 way, mod., Cv = 4.0 (50 psig)

Digit 29 Piping Package

0None

ABall valve supply & return

BBall valve supply & manual circuit setter return

CBall valve supply & auto circuit

setter

DBall valve supply & return w/strainers & unions

EBall valve supply & manual circuit

setter w/strainers & unions

FBall valve supply & auto circuit setter w/strainers & unions

Digit 30 Control Type

AFan Speed Switch

CTUC

DTUC w/Trane ICS

ETracer® ZN.010

FTracer® ZN.510

GTracer® ZN.520

Digit 31 Control Options

DUnit mtd. fan mode switch (OHML)

KWall mtd. fan mode switch (OHML)

VUnit mtd. zone sensor, w/SP rotary, & fan mode switch (OAHML),

WWall mtd. zone sensor w/

SP rotary, & fan mode switch

(OAHML),

XUnit mtd. fan mode switch, wall mtd. setpoint dial zone sensor

Digit 32-34 Future Control Options

Digit 35 Control Function 3

0None

2Condensate overflow detection

Digit 36 Control Function 4

0None

2Low temperature detection

Digits 37 & 38 Future Control Options

Digit 39 Recessed Options

0None

AStand. 5/8” recessed panel

B2” projection panel

C2.5” projection panel

D3” projection panel

E3.5” projection panel

F4” projection panel

G4.5” projection panel

H5” projection panel

J5.5” projection panel

K6” projection panel

L 2” falseback

M 3” falseback

N 4” falseback

P 5” falseback

Q 6” falseback

R7” falseback

T 8” falseback

Digit 40 Main Auto Circuit Setter GPM

0	None	K	4.5
A	0.5	L	5.0
B	0.75	M	6.0
C	1.0	N	7.0
D	1.5	P	8.0
E	2.0	Q	9.0
F	2.5	R	10.0
G	3.0	T	11.0
H	3.5	U	12.0

J4.0

Digit	41 Auxiliary Auto Circuit Setter GPM
0	None	K	4.5
A	0.5	L	5.0
B	0.75	M	6.0
C	1.0	N	7.0
D	1.5	P	8.0
E	2.0	Q	9.0
F	2.5	R	10.0
G	3.0	T	11.0
H	3.5	U	12.0

J4.0

Digit 42 Subbase

0None

A2” height

B3” height

C4” height

D5” height

E6” height

F7” height

Digit 43 Recessed Flange

0None

ARecessed flange

Digit 44 Wallbox

0None

AAnodized

8

UNT-IOM-6

Image 8

Trane LO manual UNT-IOM-6

Contents

UniTrane Fan-CoilRoom Conditioners Force Flo Cabinet Heaters SizesLow Vertical Fan-Coils Sizes UNT-IOM-6Table of Contents General Information Cabinet Styles Model AModel C Model EModel H Model KModel M 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-6Installation Considerations ο1. Clearancesο2. Structural Support ο3. LevelService Access Vertical or Low VerticalConcealed or 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 Table 1. Unit Operating Weights, pounds kg UnitCabinet ConcealedUNT-IOM-6 Cabinet unitsRecessed units Figure 5. Trim ring assembly installation UNT-IOM-6Startup Checklist External Insulating RequirementsPiping Units with Hydronic Coil Connections OnlyPiping Considerations 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 Balancing The Auto- matic Circuit Setter Valve Table 2. Automatic Circuit Setter Flow Rate RangeValve gpm Pressure Drop Range psigDuct Connections Ductwork RecommendationsSupply Power Wiring Electrical Connections·Vertical cabinet & recessed units ·Vertical concealed & all horizontal units1. Power & ground inside of control box Control Interconnection Wiring Electrical Grounding Restrictions Wall MountedTable 3. Maximum Wiring Distances, ft m Wire Size RangeInstalling Wall Mounted Controls Fan Mode Switch InstallationZone Sensor Installation UNT-IOM-6Figure 25. Wall mounted zone sensor dimensions UNT-IOM-6Wall mounted zone sensor Model # Digit 31 = W Split-mountedoptionSequence of Operations Fan Mode SwitchManual Fan Mode Switch Sequence of Operations Tracer ZN.010 and ZN.510Tracer ZN.010 and ZN.510 Power-UpSequence Entering Water Temperature Sampling FunctionOperating Information Coil Water TemperatureBIP1: Low Temperature Detection Option Binary InputsBIP2: Condensate Overflow Detection Option BIP3: Occupancy SensorBinary Outputs Tracer ZN.010 and ZN.510Table 5. Occupancy Sensor State Table Sensor TypeZone Sensors Fan Mode Switch Analog InputsTracer ZN.010 and ZN.510 Table 7. Analog Inputs AvailableSupply Fan Operation Default SettingTracer ZN.010 and ZN.510 Table 8. Fan Mode OperationTroubleshooting Red Service LEDLED Activity Table 10. Red Service LED ActivityYellow COMM LED Green STATUS LEDTracer ZN.010 and ZN.510 Table 11. Green STATUS LED ActivityTracer ZN.010 and ZN.510 Manual Output Test ProcedureManual Output Test Tracer ZN.010 and ZN.510 StepsCool Output Heat OutputDiagnostics Table 14. Controller DiagnosticsDiagnostic Tracer ZN.010 and ZN.510Resetting Diagnostics Automatic Reset by the ControllerCycling Power to the Controller Manual Output TestUNT-IOM-6 Trane’s Service Tool, Rover Alarm ResetTracer ZN.010 and ZN.510 Troubleshooting Tracer ZN.010 and ZN.510Table 15. Fan Outputs do not Energize Probable CauseTracer ZN.010 and ZN.510 Table 16. Valves Stay ClosedProbable Cause ExplanationTracer ZN.010 and ZN.510 Table 17. Valves Stay OpenProbable Cause ExplanationTracer ZN.010 and ZN.510 Table 18. Electric Heat Not OperatingProbable Cause ExplanationTracer ZN.010 and ZN.510 Table 19. Fresh Air Damper Stays ClosedProbable Cause ExplanationTracer ZN.010 and ZN.510 Table 20. Fresh Air Damper Stays OpenProbable Cause ExplanationTracer Summit Communication Wiring Tracer ZN.520Tracer ZN.520 Sequence of OperationsService Communication Wiring Wall Mounted Zone Sensor ModuleZone Sensors Without Interconnecting Wiring Tracer ZN.520Tracer ZN.520 Tracer ZN.520 Unit Start-Up Tracer CommunicationsTracer ZN.520 Sequence of Operation Tracer ZN.520 OccupiedUnoccupied Mode 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 21. Fan Configuration Fan speed defaultTable 23. Local fan switch enabled Fan switch localContinuous Fan Operation Fan Cycling Operation Fan Off DelayTracer ZN.520 HeatingEntering Water Temperature Sampling Function Tracer ZN.520Fan Start on High Speed Heating or Cooling RequiredFresh Air Damper Options Tracer ZN.520Electric Heat Operation ManualTracer ZN.520 Economizer Damperand Damper Position Outdoor Air TempData Sharing Tracer ZN.520Dehumidification Binary InputsTable 26. Binary Input Configurations ConfigurationTracer ZN.520 BinaryTable 27. Binary Output Configuration ConfigurationTracer ZN.520 Binary OutputsTracer ZN.520 Analog Inputs Table 28. Analog InputsDescription TerminalsZone Sensor Space Temperature MeasurementExternal Setpoint Adjustment Tracer ZN.520UNT-IOM-6 Fan Switch On/Cancel ButtonsTracer ZN.520 Communications Table 29. Zone sensor wiring connectionsTracer ZN.520 TB1 DescriptionDiagnostics Table 30. Tracer ZN.520 DiagnosticsDiagnostic Tracer ZN.520Tracer ZN.520 Translating Multiple DiagnosticsResetting Diagnostics Tracer ZN.520 UNT-IOM-6LED Operation Table 31. Red Service LED ActivityRed Service LED Tracer ZN.520Troubleshooting Tracer ZN.520Green Status LED Yellow Comm LED Table 32. Green Status LED activityTracer ZN.520 Manual Output TestLED Operation Test Sequence Table 34. Test SequenceTroubleshooting Tracer ZN.520Table 35. Fan outputs do not energize Probable CauseTracer ZN.520 Table 36. Valves Stay ClosedProbable Cause ExplanationTerminal Unit Control TUC TUC Sequence of OperationsTracer Communication Wiring Terminal Unit Control TUCService Communication Wiring Wall-Mounted Zone Sensor ModuleTerminal Unit Controller Start-Up Zone sensors without interconnecting wiringTUC Human Interface Terminal Unit Control TUCDIP Switch Position DIP Switch PositionTerminal Unit Control TUC Table 37. Valid TUC AddressesTUC Sequence of Operation Cooling and Heating OperationSetpoint Control Terminal Unit Control TUCTerminal Unit Control TUC Fan Mode OperationOff Position High, Medium, or Low Postion2-Pipewith Auxiliary Electric Heat Fan-coils Entering Water Temperature Sampling FunctionCoil Water Temperature Terminal Unit Control TUCManual Auto 2-Position EconomizerTerminal Unit Control TUC Fresh Air Damper OptionsTerminal Unit Control TUC UNT-IOM-6UNT-IOM-6 BIP4 Low Temperature Detection OptionBIP3: Condensate Overflow Detection Device BIP4: Smoke Input BIP3: Occupied/ Unoccupied Mode BIP1: External InterlockTerminal Unit Control TUC UNT-IOM-6BIP2 Motion Detection Autocycle Test Terminal Unit Control TUCTerminal Unit Control TUC Reading Diagnostics ϒ ϒ ϒ ϒ λ ϒ ϒ ϒ λ ϒ λ λTerminal Unit Control TUC 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 ϒUsing the Zone Sensor Using EverywareSoftware DiagnosticsResetting Diagnostics Table 43. TUC Controller DiagnosticsCycling Power to the TUC Using Tracer 100i or 100L Using Tracer SummitUnit Mode Listed as Standby Terminal Unit Control TUCTroubleshooting Terminal Unit Control TUCTable 44. TUC Does Not Communicate Probable CauseTerminal Unit Control TUC Table 45-Continued.Fan Outputs not EnergizingProbable Cause ExplanationTerminal Unit Control TUC Table 46—Continued.Valves ClosedProbable Cause ExplanationTerminal Unit Control TUC Table 48. Electric Heat Not OperatingProbable Cause ExplanationTerminal Unit Control TUC Table 49. Fresh Air Damper ClosedProbable Cause ExplanationTable 51. Zone Temperature Too Warm Terminal Unit Control TUCTable 50. Fresh Air Damper Open Probable CauseExplanation Table 52. Zone Temperature Too CoolProbable Cause Maintenance Periodic Maintenance ChecklistMaintenance Procedures 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 CoilsVolume Piping PackageUnit Size Total # Rows1.Disconnect all electrical power to the unit Inspecting and Cleaning the Fan UNT-IOM-6 Fan Board Assembly Removal Replacing the MotorVertical Units Horizontal UnitsControl Device Replacement Table 56. Trouble ShootingProblem 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 The Trane Company An American Standard CompanyLiterature Order Number UNT-IOM-6