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LO manual
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LO
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Troubleshooting
Install
Fan Mode Switch Typical Wiring Diagram
Control Device Replacement
Dimension
Maintenance
Fan Configuration
Connecting field piping to coil
Resetting Diagnostics
Diagnostics
Page 135
Image 135
Page 134
Page 136
Page 135
Image 135
Page 134
Page 136
Contents
UNT-IOM-6
UniTrane Fan-CoilRoom Conditioners
Force Flo Cabinet Heaters Sizes
Low Vertical Fan-Coils Sizes
Table of Contents
General Information
Model E
Cabinet Styles
Model A
Model C
Model J
Model H
Model K
Model M
Model Number Description
detailed explanation of the
model number
UNT-IOM-6
Model Number Description
UNT-IOM-6
UNT-IOM-6
Receiving and Handling
UNT-IOM-6
Jobsite Storage
ο3. Level
Installation Considerations
ο1. Clearances
ο2. Structural Support
Vertical or Low
Service Access
Vertical or Low Vertical
Concealed or Vertical
Installation Checklist
ο ο ο
Vertical Units
Installing the Unit
Horizontal Units
CAUTION: All unit panels and filters must be in
filters in place may cause motor overload
Concealed
Table 1. Unit Operating Weights, pounds kg
Unit
Cabinet
Cabinet units
Recessed units
UNT-IOM-6
UNT-IOM-6
Figure 5. Trim ring assembly installation
External Insulating Requirements
Startup Checklist
Connecting field piping to coil
Piping
Units with Hydronic Coil Connections Only
Piping Considerations
UNT-IOM-6
Units with Steam Coils
UNT-IOM-6
Factory Piping Package Connections
Connecting Water Piping to Factory Piping Package
Piping Considerations
Connecting the Condensate Drain
Installing the Auxiliary Drain Pan
Condensate Overflow Detection Device
Automatic Changeover Sensor
UNT-IOM-6
Automatic Electric Heat Lockout Switch Fan-coil
UNT-IOM-6
Venting the Hydronic Coil
If the piping package has modulating valves
Balancing The Manual Circuit Setter Valve
UNT-IOM-6
Pressure Drop Range psig
Balancing The Auto- matic Circuit Setter Valve
Table 2. Automatic Circuit Setter Flow Rate Range
Valve gpm
Ductwork Recommendations
Duct Connections
·Vertical concealed & all horizontal units
Supply Power Wiring
Electrical Connections
·Vertical cabinet & recessed units
1. Power & ground inside of control box
Wire Size Range
Control Interconnection Wiring
Electrical Grounding Restrictions Wall Mounted
Table 3. Maximum Wiring Distances, ft m
Fan Mode Switch Installation
Installing Wall Mounted Controls
UNT-IOM-6
Zone Sensor Installation
Split-mountedoption
Figure 25. Wall mounted zone sensor dimensions
UNT-IOM-6
Wall mounted zone sensor Model # Digit 31 = W
Fan Mode Switch
Manual Fan Mode Switch
Sequence of Operations
Tracer ZN.010 and ZN.510
Tracer ZN.010 and ZN.510
Sequence of Operations
Coil Water Temperature
Power-UpSequence
Entering Water Temperature Sampling Function
Operating Information
BIP3: Occupancy Sensor
BIP1: Low Temperature Detection Option
Binary Inputs
BIP2: Condensate Overflow Detection Option
Sensor Type
Binary Outputs
Tracer ZN.010 and ZN.510
Table 5. Occupancy Sensor State Table
Table 7. Analog Inputs Available
Zone Sensors Fan Mode Switch
Analog Inputs
Tracer ZN.010 and ZN.510
Table 8. Fan Mode Operation
Supply Fan Operation
Default Setting
Tracer ZN.010 and ZN.510
Table 10. Red Service LED Activity
Troubleshooting
Red Service LED
LED Activity
Table 11. Green STATUS LED Activity
Yellow COMM LED
Green STATUS LED
Tracer ZN.010 and ZN.510
Manual Output Test Procedure
Manual Output Test
Tracer ZN.010 and ZN.510
Heat Output
Tracer ZN.010 and ZN.510
Steps
Cool Output
Tracer ZN.010 and ZN.510
Diagnostics
Table 14. Controller Diagnostics
Diagnostic
Manual Output Test
Resetting Diagnostics
Automatic Reset by the Controller
Cycling Power to the Controller
Trane’s Service Tool, Rover Alarm Reset
Tracer ZN.010 and ZN.510
UNT-IOM-6
Probable Cause
Troubleshooting
Tracer ZN.010 and ZN.510
Table 15. Fan Outputs do not Energize
Explanation
Tracer ZN.010 and ZN.510
Table 16. Valves Stay Closed
Probable Cause
Explanation
Tracer ZN.010 and ZN.510
Table 17. Valves Stay Open
Probable Cause
Explanation
Tracer ZN.010 and ZN.510
Table 18. Electric Heat Not Operating
Probable Cause
Explanation
Tracer ZN.010 and ZN.510
Table 19. Fresh Air Damper Stays Closed
Probable Cause
Explanation
Tracer ZN.010 and ZN.510
Table 20. Fresh Air Damper Stays Open
Probable Cause
Sequence of Operations
Tracer Summit Communication Wiring
Tracer ZN.520
Tracer ZN.520
Tracer ZN.520
Service Communication Wiring
Wall Mounted Zone Sensor Module
Zone Sensors Without Interconnecting Wiring
Tracer ZN.520 Unit Start-Up Tracer Communications
Tracer ZN.520 Sequence of Operation
Tracer ZN.520
Occupied Standby Mode
Tracer ZN.520
Occupied
Unoccupied Mode
Tracer ZN.520
Occupied Bypass Mode
Occupancy Sources
Tracer Summit With Supply Fan Control
Cooling Operation
Tracer ZN.520
Heating Operation
Tracer ZN.520
Discharge Air Tempering
Tracer ZN.520
Fan Mode Operation
Fan switch local
Table 21. Fan Configuration
Fan speed default
Table 23. Local fan switch enabled
Heating
Continuous Fan Operation Fan Cycling Operation
Fan Off Delay
Tracer ZN.520
Heating or Cooling Required
Entering Water Temperature Sampling Function
Tracer ZN.520
Fan Start on High Speed
Manual
Fresh Air Damper Options
Tracer ZN.520
Electric Heat Operation
Outdoor Air Temp
Tracer ZN.520
Economizer Damper
and Damper Position
Binary Inputs
Data Sharing
Tracer ZN.520
Dehumidification
Binary
Table 26. Binary Input Configurations
Configuration
Tracer ZN.520
Binary Outputs
Table 27. Binary Output Configuration
Configuration
Tracer ZN.520
Terminals
Tracer ZN.520
Analog Inputs Table 28. Analog Inputs
Description
Tracer ZN.520
Zone Sensor
Space Temperature Measurement
External Setpoint Adjustment
Fan Switch On/Cancel Buttons
Tracer ZN.520
UNT-IOM-6
TB1 Description
Communications
Table 29. Zone sensor wiring connections
Tracer ZN.520
Tracer ZN.520
Diagnostics
Table 30. Tracer ZN.520 Diagnostics
Diagnostic
Translating Multiple Diagnostics
Resetting Diagnostics
Tracer ZN.520
UNT-IOM-6
Tracer ZN.520
Tracer ZN.520
LED Operation
Table 31. Red Service LED Activity
Red Service LED
Table 32. Green Status LED activity
Troubleshooting
Tracer ZN.520
Green Status LED Yellow Comm LED
Test Sequence Table 34. Test Sequence
Tracer ZN.520
Manual Output Test
LED Operation
Probable Cause
Troubleshooting
Tracer ZN.520
Table 35. Fan outputs do not energize
Explanation
Tracer ZN.520
Table 36. Valves Stay Closed
Probable Cause
TUC Sequence of Operations
Terminal Unit Control TUC
Terminal Unit Control TUC
Tracer Communication Wiring
Zone sensors without interconnecting wiring
Service Communication Wiring Wall-Mounted
Zone Sensor Module
Terminal Unit Controller Start-Up
Terminal Unit Control TUC
TUC Human Interface
Table 37. Valid TUC Addresses
DIP Switch Position
DIP Switch Position
Terminal Unit Control TUC
Terminal Unit Control TUC
TUC Sequence of Operation
Cooling and Heating Operation
Setpoint Control
High, Medium, or Low Postion
Terminal Unit Control TUC
Fan Mode Operation
Off Position
Terminal Unit Control TUC
2-Pipewith Auxiliary Electric Heat Fan-coils
Entering Water Temperature Sampling Function
Coil Water Temperature
Fresh Air Damper Options
Manual
Auto 2-Position Economizer
Terminal Unit Control TUC
UNT-IOM-6
Terminal Unit Control TUC
BIP4 Low Temperature Detection Option
BIP3: Condensate Overflow Detection Device
UNT-IOM-6
UNT-IOM-6
BIP4: Smoke Input BIP3: Occupied/ Unoccupied Mode
BIP1: External Interlock
Terminal Unit Control TUC
Terminal Unit Control TUC
BIP2 Motion Detection Autocycle Test
Terminal Unit Control TUC
Sequence
Reading Diagnostics
ϒ ϒ ϒ ϒ λ ϒ ϒ ϒ λ ϒ λ λ
Terminal Unit Control TUC
Terminal Unit Control TUC
Reading the Operating Machine State
ϒ ϒ ϒ ϒ ϒ ϒ ϒ λ
Terminal Unit Control TUC
Terminal Unit Control TUC
Reading the Operating Control Mode
ϒ ϒ ϒ ϒ ϒ ϒ ϒ ϒ ϒ ϒ λ ϒ
Terminal Unit Control TUC
ϒ ϒ ϒ ϒ
Terminal Unit Control TUC
Table 43. TUC Controller Diagnostics
Using the Zone Sensor Using EverywareSoftware
Diagnostics
Resetting Diagnostics
Terminal Unit Control TUC
Cycling Power to the TUC
Using Tracer 100i or 100L Using Tracer Summit
Unit Mode Listed as Standby
Probable Cause
Troubleshooting
Terminal Unit Control TUC
Table 44. TUC Does Not Communicate
Explanation
Terminal Unit Control TUC
Table 45-Continued.Fan Outputs not Energizing
Probable Cause
Explanation
Terminal Unit Control TUC
Table 46—Continued.Valves Closed
Probable Cause
Explanation
Terminal Unit Control TUC
Table 48. Electric Heat Not Operating
Probable Cause
Explanation
Terminal Unit Control TUC
Table 49. Fresh Air Damper Closed
Probable Cause
Probable Cause
Table 51. Zone Temperature Too Warm
Terminal Unit Control TUC
Table 50. Fresh Air Damper Open
Table 52. Zone Temperature Too Cool
Probable Cause
Explanation
Filters
Maintenance
Periodic Maintenance Checklist
Maintenance Procedures
Unit size
Main Filter
Fresh Air Filter
Inspecting and Cleaning Drain Pans
Main Drain Pan
Auxiliary Drain Pan
Winterizing the Coil
Horizontal units
Vertical units
Steam and Water Coils
Inspecting and Cleaning Coils
Total # Rows
Volume
Piping Package
Unit Size
1.Disconnect all electrical power to the unit
Inspecting and Cleaning the Fan
UNT-IOM-6
Horizontal Units
Fan Board Assembly Removal
Replacing the Motor
Vertical Units
Possible Cause
Control Device Replacement
Table 56. Trouble Shooting
Problem
Factory Piping Packages
Appendix
For reference only
Fan Mode Switch Typical Wiring Diagram
For Reference Only
Tracer ZN.010 Typical Wiring Diagram
Tracer ZN.010 Typical Wiring Diagram
For Reference Only
Electric heat contactor
Tracer ZN.010 Typical Wiring Diagram
For Reference Only
Four-pipe Two-positionN/C cooling control valve
For Reference Only
TUC Typical Wiring Diagram
TUC Typical Wiring Diagram
For Reference Only
UNT-IOM-6
Page
UNT-IOM-6
The Trane Company
An American Standard Company
Literature Order Number