Star(*)/Double Star(**) Function; Sensors With Thumb Wheels; Display Sensor - Trane Wired Temperature Sensors Installation, Operation And Maintenance Manual

Wired temperature sensors
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Operation

Star(*)/Double Star(**) Function

The star/double star function is available on sensor models with thumb wheels and on the display
sensor.
Note: Consult the appropriate unit controller documentation for information about this function.

Sensors with Thumb Wheels

Turning the thumb wheel clockwise makes the star(*) visible; turning it counter-clockwise makes
the double star(**) visible (see
Figure 4. Star/Double star on thumb wheel

Display Sensor

The display sensor supports the star(*) and double star(**) functions if the sensor is configured for
single setpoint operation. Press the up or down arrow on the keypad to display the star(*) or double
star(**), respectively, on the sensor display.
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Star(*): A value of 95ºF (35ºC) is communicated.
Double star(**): A value of 44.6ºF (7ºC) is communicated.
If the setpoint is increased one increment above 89.6ºF (32ºC), the star (*) appears. A value of
95ºF (35ºC) is communicated.
If the setpoint is decreased one increment below 50ºF (10ºC), the double star(**) appears. A
value of 44.6ºF (7ºC) is communicated.
Figure
4).
"**" on setpoint thumb wheel
("*" is hidden from view)
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