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Summary of Contents for Trane LO
- Page 1 Installation Operation Maintenance ® UniTrane Fan-Coil Room Conditioners Force Flo™ Cabinet Heaters Sizes 02-12 Low Vertical Fan-Coils Sizes 03-06 Models “LO” Design Sequence and Later UNT-IOM-6 April 2000 Supercedes UNT-IOM-5...
- Page 2 Table of Contents UNT-IOM-6...
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Page 3: General Information
Control panel *Featured on fan-coils only Figure 1. Main components of a fan-coil or cabinet heater unit. UNT-IOM-6 General Information Hydronic coil *Main drain pan Supply fan(s) Fan motor(s) Piping package Throwaway filter *Auxiliary drain pan... -
Page 4: Cabinet Styles
Model A Vertical Concealed Model C Horizontal Concealed Model E Horizontal Recessed Cabinet Styles Model D Horizontal Cabinet Model F Wall Hung Cabinet** Model B Vertical Cabinet UNT-IOM-6... - Page 5 Model H Vertical Recessed Model K Low Vertical Concealed* Model M Inverted Vertical Cabinet** *Fan-coil only **Force Flo cabinet heater only UNT-IOM-6 Model J Vertical Slope Top Cabinet Model L Low Vertical Cabinet* Model N Inverted Vertical Recessed**...
- Page 6 Model Number Description Figure 2. The unit nameplate is on the fan scroll. UNT-IOM-6...
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Page 7: Model Number Description
Model Number Description UNT-IOM-6... - Page 8 ® ® ® UNT-IOM-6...
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Page 9: Receiving And Handling
Receiving and Handling UNT-IOM-6... -
Page 10: Jobsite Storage
Jobsite Storage UNT-IOM-6... -
Page 11: Installation Considerations
Installation Considerations UNT-IOM-6... -
Page 12: Service Access
Service Access Figure 3. Recommended Service and Operating Clearances UNT-IOM-6... -
Page 13: Installation Checklist
UNT-IOM-6 Installation Checklist WARNING: Allow rotating fan to stop before servicing equipment. Failure to do so may cause severe personal injury or death. CAUTION: The unit must be installed level (zero tolerance) in both horizontal axis for proper operation. Failure to do so may result in condensate management problems such as standing water inside the unit. - Page 14 UNT-IOM-6...
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Page 15: Installing The Unit
Vertical Units Figure 4. Keyslot Hanger Hole Locations UNT-IOM-6 Installing the Unit CAUTION: Do not allow electrical wire to fall between the unit and installation surface. Failure to comply may cause electrical shorts or difficulty in access- ing wires. -
Page 16: Horizontal Units
Horizontal Units CAUTION: All unit panels and filters must be in place prior to unit start-up. Failure to have panels and filters in place may cause motor overload. UNT-IOM-6... - Page 17 UNT-IOM-6...
- Page 18 · · · · · · CAUTION: All unit panels and filters must be in place prior to unit start-up. Failure to have panels and filters in place may cause motor overload. UNT-IOM-6...
- Page 19 Figure 5. Trim ring assembly installation. UNT-IOM-6...
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Page 20: Start-Up Checklist
External Insulating Requirements Startup Checklist UNT-IOM-6... - Page 21 Units with Hydronic Coil Connections Only Piping Considerations UNT-IOM-6 Piping · · · · CAUTION: When using a field supplied piping package in a fan-coil unit, allow sufficient room to install the auxiliary drain pan. In addition, piping package must not extend over edges of auxiliary drain pan.
- Page 22 Units with Steam Coils CAUTION: In all steam coil installations, the con- densate return connections must be at the low point of the coil to ensure condensate flows freely from the coil at all times. Failure to do so may cause physical coil damage from water hammer, unequal thermal stresses, freeze-up and/or corrosion.
- Page 23 ST = Strainer FT = Float and thermostatic steam trap MV = Manual air vent GV= Gate valve VB = Vacuum breaker, 15° swing check valve Figure 8. Example of typical piping to the steam coil. UNT-IOM-6...
- Page 24 Factory Piping Package Connections Piping Considerations · · · · Figure 9. Remove the shipping brackets which support the factory piping package before connecting piping. UNT-IOM-6...
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Page 25: Connecting The Condensate Drain
Installing the Auxiliary Drain Connecting the Condensate Drain UNT-IOM-6 Figure 10. Insert the auxiliary drain pan tabs into these slots in the fan-coil chassis end panel. Figure 11. The horizontal auxiliary drain pan in its installed position. -
Page 26: Condensate Overflow Detection Device
Condensate Overflow Detection Device Automatic Changeover Sensor Figure 12. Condensate overflow switch installed in a vertical auxiliary drain pan. Figure 13. Condensate overflow switch installed in a horizontal auxiliary drain pan. UNT-IOM-6... - Page 27 Automatic Electric Heat Lockout Switch (Fan-coil) UNT-IOM-6 Figure 14. The changeover sensor strapped to the supply water pipe. ° Figure 15. Units with electric heat have an electric heat lockout switch on the supply water pipe.
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Page 28: Venting The Hydronic Coil
Venting the Hydronic Coil Figure 16. The hydronic coil air vent is above the coil connections. A horizontal unit is on the left and a vertical on the right. UNT-IOM-6... - Page 29 Balancing The Manual Circuit Setter Valve UNT-IOM-6 Figure 17. Manual circuit setter valve.
- Page 30 Figure 19. Setting the manual circuit setter valve, differential pressure vs. flow. Figure 18. Close-up view of manual circuit setter valve. UNT-IOM-6...
- Page 31 Balancing The Auto- matic Circuit Setter Valve UNT-IOM-6 Figure 20. Automatic circuit setter valve.
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Page 32: Duct Connections
Ductwork Recommendations Duct Connections · · · UNT-IOM-6... -
Page 33: Electrical Connections
Supply Power Wiring UNT-IOM-6 Electrical Connections WARNING: Hazardous voltage! Disconnect all electric power including remote disconnects before servicing. Failure to do so may cause severe personal injury or death. · · CAUTION: Use copper conductors only! Unit terminals are not designed to accept other types of conductors. - Page 34 Figure 23. The terminal unit control (TUC) board pivots downward to provide service access. WARNING: Insulate all power wire from sheetmetal ground. Failure to do so may cause electrical shorts resulting in personal injury or death. UNT-IOM-6...
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Page 35: Electrical Grounding Restrictions
Electrical Grounding Restrictions Wall Mounted Control Interconnection Wiring UNT-IOM-6 CAUTION: Unit transformer IT1 provides power to fan-coil unit only. Field connections to the transformer IT1 may create immediate or premature unit component failure. - Page 36 Fan Mode Switch Installation Figure 24. Fan Mode Switch Installing Wall Mounted Controls · · · · · · UNT-IOM-6...
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Page 37: Zone Sensor Installation
Zone Sensor Installation UNT-IOM-6... - Page 38 Figure 25. Wall mounted zone sensor dimensions. Figure 26. Resistance temperature curve for the zone sensor, entering water temperature sensor, and discharge air sensor. Wall mounted zone sensor Split-mounted option: Model # Digit 31 = W Wall mounted setpoint dial with unit mounted fan mode switch Model # Digit 31 = X UNT-IOM-6...
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Page 39: Fan Mode Switch
Fan Mode Switch UNT-IOM-6... - Page 40 ® Tracer ZN.010 and ZN.510 ® Tracer ZN.010 and ZN.510 Figure 27. The Tracer ZN.010 board. UNT-IOM-6...
- Page 41 Operating Information Power-Up Sequence Entering Water Temperature Sampling Function UNT-IOM-6 ® Tracer ZN.010 and ZN.510 · ³ · ³ · ³ · ³ · ·...
- Page 42 Binary Inputs BIP1: Low Temperature Detection Option BIP2: Condensate Overflow Detection Option BIP3: Occupancy Sensor ® Tracer ZN.010 and ZN.510 UNT-IOM-6...
- Page 43 ® Tracer ZN.010 and ZN.510 Binary Outputs ® UNT-IOM-6...
- Page 44 Analog Inputs Zone Sensors Fan Mode Switch ® Tracer ZN.010 and ZN.510 UNT-IOM-6...
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Page 45: Supply Fan Operation
Supply Fan Operation UNT-IOM-6 Tracer and ZN.510 ® ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ® ZN.010... -
Page 46: Troubleshooting
Yellow COMM LED Red SERVICE LED LED Activity Red Service LED Troubleshooting Figure 28. The Tracer ZN.010 board. ® Tracer ZN.010 and ZN.510 Green STATUS LED UNT-IOM-6... - Page 47 Green STATUS LED Yellow COMM LED UNT-IOM-6 Tracer and ZN.510 · · · ® ZN.010...
- Page 48 Manual Output Test Manual Output Test Procedure · · ® Tracer ZN.010 and ZN.510 UNT-IOM-6...
- Page 49 ® Tracer ZN.010 and ZN.510 UNT-IOM-6...
- Page 50 ® Tracer ZN.010 and ZN.510 Diagnostics UNT-IOM-6...
- Page 51 Resetting Diagnostics Automatic Reset by the Controller Manual Output Test Cycling Power to the Controller UNT-IOM-6 ® Tracer ZN.010 and ZN.510...
- Page 52 Trane’s Service Tool, Rover™ Alarm Reset ® Tracer ZN.010 and ZN.510 UNT-IOM-6...
- Page 53 ® Tracer ZN.010 and ZN.510 Troubleshooting UNT-IOM-6...
- Page 54 ® Tracer ZN.010 and ZN.510 UNT-IOM-6...
- Page 55 ® Tracer ZN.010 and ZN.510 UNT-IOM-6...
- Page 56 ® Tracer ZN.010 and ZN.510 UNT-IOM-6...
- Page 57 ® Tracer ZN.010 and ZN.510 UNT-IOM-6...
- Page 58 ® Tracer ZN.010 and ZN.510 UNT-IOM-6...
- Page 59 ® Tracer ZN.520 ® Tracer ZN.520 ® UNT-IOM-6...
- Page 60 Tracer ® ZN.520 UNT-IOM-6...
- Page 61 ® Tracer ZN.520 ® ® ® UNT-IOM-6...
- Page 62 Tracer ® ZN.520 UNT-IOM-6...
- Page 63 ® Tracer ZN.520 UNT-IOM-6...
- Page 64 Tracer ® ZN.520 ® UNT-IOM-6...
- Page 65 ® Tracer ZN.520 UNT-IOM-6...
- Page 66 Tracer ® ZN.520 UNT-IOM-6...
- Page 67 ® Tracer ZN.520 UNT-IOM-6...
- Page 68 Tracer ® ZN.520 UNT-IOM-6...
- Page 69 ® Tracer ZN.520 UNT-IOM-6...
- Page 70 Tracer ® ZN.520 UNT-IOM-6...
- Page 71 ® Tracer ZN.520 UNT-IOM-6...
- Page 72 Tracer ® ZN.520 ® UNT-IOM-6...
- Page 73 ® Tracer ZN.520 ® UNT-IOM-6...
- Page 74 Tracer ® ZN.520 ® ® UNT-IOM-6...
- Page 75 ® Tracer ZN.520 UNT-IOM-6...
- Page 76 Tracer ® ZN.520 UNT-IOM-6...
- Page 77 ® Tracer ZN.520 UNT-IOM-6...
- Page 78 Tracer ® ZN.520 UNT-IOM-6...
- Page 79 ® Tracer ZN.520 ® ® UNT-IOM-6...
- Page 80 Tracer ® ZN.520 ® UNT-IOM-6...
- Page 81 ® Tracer ZN.520 UNT-IOM-6...
- Page 82 Tracer ® ZN.520 Caution: If the Service push button is held down for more ® than 15 seconds, the Tracer ZN.520 controller will uninstall itself from the ICS™ communication network and shut down all unit operation. This mode is indicated by the red Service LED flashing once every second.
- Page 83 ® Tracer ZN.520 Troubleshooting UNT-IOM-6...
- Page 84 Tracer ® ZN.520 UNT-IOM-6...
- Page 85 ® Tracer ZN.520 Troubleshooting UNT-IOM-6...
- Page 86 Tracer ® ZN.520 UNT-IOM-6...
- Page 87 Terminal Unit Control (TUC) ä Figure 29. The TUC module board. UNT-IOM-6...
- Page 88 Tracer ® Communication Wiring Terminal Unit Control (TUC) · · · · · · · · · UNT-IOM-6...
- Page 89 Service Communication Wiring Wall-Mounted Zone Sensor Module Terminal Unit Controller Start-Up UNT-IOM-6 Terminal Unit Control (TUC) · · ä ä ä ä...
- Page 90 TUC Human Interface Setting the ICS Ad- dress for Tracer Com- munications Terminal Unit Control (TUC) ° · ° · ° ° ° UNT-IOM-6...
- Page 91 Terminal Unit Control (TUC) UNT-IOM-6...
- Page 92 Cooling and Heating Operation Setpoint Control TUC Sequence of Operation · · · ° ° ® Terminal Unit Control (TUC) ° UNT-IOM-6...
- Page 93 Fan Mode Operation UNT-IOM-6 Terminal Unit Control (TUC) ° ä °...
- Page 94 Entering Water Temperature Sampling Function 2-Pipe with Auxiliary Electric Heat (Fan-coils) · · · · · · ° ° ° ± ° Terminal Unit Control (TUC) ³ ³ ³ ³ UNT-IOM-6...
- Page 95 Fresh Air Damper Options Manual Auto 2-Position Economizer UNT-IOM-6 Terminal Unit Control (TUC) Figure 30. Re-locate the damper stop screw to adjust the damper position. The factory positions the stop screw in the 25% open position. â ä...
- Page 96 Terminal Unit Control (TUC) ° ° ° ° ° UNT-IOM-6...
- Page 97 BIP4: Low Temperature Detection Option BIP3: Condensate Overflow Detection Device UNT-IOM-6 Terminal Unit Control (TUC) ° Figure 31. The low temperature sensor is a capillary tube inserted into the coil to detect freezing conditions. °...
- Page 98 BIP4: Smoke Input BIP3: Occupied/ Unoccupied Mode BIP1: External Interlock Terminal Unit Control (TUC) â UNT-IOM-6...
- Page 99 BIP2: Motion Detection Autocycle Test UNT-IOM-6 CAUTION: If the TUC is left in the autocycle test mode, it will automatically return to normal unit opera- tion after 60 minutes. Terminal Unit Control (TUC)
- Page 100 ¡ l ¡ l ¡ l ¡ l l ¡ ¡ l l l l ¡ ¡ ¡ l ¡ ¡ l l ¡ l ¡ l ¡ l l l l ¡ ¡ l l ¡ l l l l ¡ ¡...
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Page 101: Reading Diagnostics
UNT-IOM-6 Reading Diagnostics ¡ ¡ ¡ ¡ l ¡ ¡ ¡ ¡ ¡ ¡ l ¡ ¡ Terminal Unit Control (TUC) l ¡ l l ¡ l ¡... - Page 102 ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ l ¡ ¡ ¡ l ¡ l l ¡ ¡ ¡ ¡ l ¡ ¡ l l ¡ l l ¡ ¡ ¡ ¡ l ¡ l ¡ ¡ ¡ ¡ ¡ ¡...
- Page 103 ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ l ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ l ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ l l ¡ ¡...
- Page 104 Reading the Operating Control Mode Terminal Unit Control (TUC) UNT-IOM-6...
- Page 105 ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ l ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ l ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ l ¡ ¡ ¡ ¡...
- Page 106 ¡ ¡ ¡ ¡ ¡ ¡ ¡ l ¡ ¡ ¡ ¡ ¡ ¡ ¡ l ¡ ¡ ¡ ¡ ¡ ¡ ¡ l ¡ ¡ ¡ ¡ ¡ ¡ ¡ l ¡ ¡ ¡ ¡ ¡ ¡ ¡ l ¡...
- Page 107 Resetting Diagnostics Using the Zone Sensor Using ™ Everyware Software UNT-IOM-6 Diagnostics ä ä Terminal Unit Control (TUC) ä...
- Page 108 Cycling Power to the ™ Using Tracer 100i ™ 100L Using Tracer Summit ® Unit Mode Listed as Standby Terminal Unit Control (TUC) UNT-IOM-6...
- Page 109 Terminal Unit Control (TUC) Troubleshooting UNT-IOM-6...
- Page 110 · · · Terminal Unit Control (TUC) UNT-IOM-6...
- Page 111 Terminal Unit Control (TUC) UNT-IOM-6...
- Page 112 Terminal Unit Control (TUC) UNT-IOM-6...
- Page 113 · · · · · UNT-IOM-6 Terminal Unit Control (TUC)
- Page 114 · · · Terminal Unit Control (TUC) UNT-IOM-6...
- Page 115 UNT-IOM-6...
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Page 116: Periodic Maintenance Checklist
Periodic Maintenance Checklist Maintenance Procedures Filters Maintenance WARNING: Allow rotating fan to stop before servicing equipment. Failure to do so may cause severe personal injury or death. UNT-IOM-6... - Page 117 CAUTION: All unit panels and filters must be in place prior to unit start-up. Failure to have panels and filters in place may cause motor overload. Table 53. Filter Sizes, in. (cm) UNT-IOM-6...
- Page 118 Inspecting and Cleaning Drain Pans UNT-IOM-6...
- Page 119 Auxiliary Drain Pan Main Drain Pan UNT-IOM-6 CAUTION: Exercise extreme care when removing auxiliary drain pan. Failure to do so may cause plastic mounting tabs to break. Coil Main Drain Pan Figure 32. When replacing the fan-coil’s main drain pan, install it correctly under the z-bar.
- Page 120 Winterizing the Coil Figure 33. To remove the main drain pan on vertical fan-coil units, disconnect the clips holding the pan to the fanboard. Figure 34. To remove the main drain pan on horizontal fan- coil units, peel the insulation from the edges of the pan’s underside to access the mounting screws.
- Page 121 Inspecting and Cleaning Coils Steam and Water Coils UNT-IOM-6...
- Page 122 Table 54. Factory Piping Package Volumes, oz. (mL) Table 55. Hydronic Coil Volumes/Heating & Cooling, gal. UNT-IOM-6...
- Page 123 Inspecting and Cleaning the Internal Insulation on Fan-Coils UNT-IOM-6...
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Page 124: Inspecting And Cleaning The Fan
Inspecting and Cleaning the Fan UNT-IOM-6... - Page 125 UNT-IOM-6...
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Page 126: Replacing The Motor
Fan Board Assembly Removal Replacing the Motor WARNING: Allow rotating fan to stop before servicing equipment. Failure to do so may cause severe personal injury or death. CAUTION: Support the fanboard when removing it from the unit. Failure to do so may cause personal injury. Figure 35. - Page 127 Control Device Replacement UNT-IOM-6...
- Page 128 Appendix Factory Piping Packages Automatic Circuit Setter (C) UNT-IOM-6...
- Page 129 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.
- Page 130 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 autochangeover...
- Page 131 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 autochangeover with electric heat...
- Page 132 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. Four-pipe...
- Page 133 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 —...
- Page 134 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. Four-pipe unit with control valves (both modulating) terminal unit controller Wall mounted zone sensor —...
- Page 135 UNT-IOM-6...
- Page 136 An American Standard Company Literature Order Number UNT-IOM-6 File Number PL-TD- UNT-IOM-6-4-00 Supersedes UNT-IOM-5 Stocking Location LaCrosse Since The Trane Company has a policy of continuous product improvement, it reserves the right to change design and specifications without notice.
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