Terminal Unit Control (TUC)

Service

Communication

Wiring

Wall-Mounted

Zone Sensor

Module

Terminal Unit Controller Start-Up

Establish service communication to the TUC by connecting a twisted wire pair to one of the following connection points.

·Remote zone sensor module

·Low voltage terminal strip inside the control panel

This will allow the technician to view and edit the TUC configuration and troubleshoot the unit. However, control options ordered and the wiring practice followed in the field may limit the communication ability.

Route interconnection wiring from the TUC to provide service commu- nication at the wall-mounted zone sensor module. Install wiring by referencing the unit wiring schematic and Table 3 on page 35 for appropriate wire sizes. After wiring is complete, connect the comm4 port on the zone sensor module with a telephone style RJ 11 connec- tor (Western Electric #616 or equivalent). Run the telephone style connector to a laptop computer running Trane EveryWareä software to establish communication.

Zone sensors without interconnecting wiring:

Establish service communication to the TUC by wiring to the low voltage terminal strip inside the control box. Reference the unit wiring schematic for the appropriate communication terminals on the low voltage terminal strip. Maintain the correct polarity throughout the communication wiring circuit.

Once wiring is complete, use Trane EveryWareä software to commu- nicate to the TUC. The comm4 connection can be made by the telephone style RJ 11 connector (Western Electric #616 or equivalent) on the zone sensor module and the computer using EveryWareä .

Refer to Trane publication, EMTX-IOP-1Installation Operation Pro- gramming Guide, to operate the TUC with Trane Integrated Comfortsm System (ICS). The factory pre-programs the TUC with default values to control the temperature and unit air flow. Use Tracer® building automation system or EveryWareä software to change the default values.

Follow the procedure below to operate the TUC in a stand-alone operation.

1.Turn power on at the disconnect switch option.

2.Position the fan mode switch to either high, medium, low, or the auto position.

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Trane LO manual Service Communication Wiring Wall-Mounted Zone Sensor Module, Terminal Unit Controller Start-Up
Page 88 Page 90

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