Trane LO manual TUC Human Interface, Terminal Unit Control TUC

Terminal Unit Control (TUC)

TUC Human

Interface

Setting the ICS Ad- dress for Tracer Com- munications

3.Rotate the setpoint dial on the zone sensor module to 55° F for cooling or 85° F for heating.

The appropriate control valve will actuate assuming the following conditions:

·Room temperature should be greater than 55° F and less than 85° F

·For a 2-pipe fan-coil unit with an automatic changeover sensor, the water temperature input is appropriate for the

demand placed on the unit, e.g. cooling operation is re- quested and cold water (5° F lower than room temperature for a TUC) flows into the unit.

4.Select the correct temperature setpoint.

Note: Select and enable zone sensor temperature settings to prevent freeze damage to unit.

TUCs connected to a Tracer® comm 4 communication link requires a unique address. Use the TUC’s eight DIP switches to set the ICS address. The address must be in the valid range of 33 to 96. See Table 21 on page 63 for address settings.

To set the ICS address, perform the following steps:

1.Set the DIP switches to the correct address. ON implies that the DIP switch is pressed towards the DIP switch number. OFF implies that the DIP switch is pressed towards the OPEN position.

2.Short and hold the test input (J11 and J12) until all LEDs are illuminated. Remove the jumper from the test input. This sets the address in the TUC EEPROM.

Note: Cycling power to the TUC forces the TUC to read the DIP switch settings (Rev 12 TUC or higher). The TUC firmware version can be read from either Tracer or Everyware. Additionally, the last two digits of the part number printed on the sticker on the TUC 1U1 microprocessor indicate the TUC firmware version, ie: 6200-0028-13. The TUC operates the fan in the following modes:

90 UNT-IOM-6