Trane TR150 Programming Manual page 39

Parameters
1-93 Thermistor Source
Option:
3 3
[0] None
*
[1] Analog
input
AI53
[6] Digital
input 29
38
TR150 and TR170
Function:
as a reference in parameter 3-15 Reference
Resource 1 to parameter 3-17 Reference Resource
3, parameter 20-00 Feedback 1 Source,
parameter 20-03 Feedback 2 Source,
parameter 24-06 Fire Mode Reference Source, and
parameter 24-07 Fire Mode Feedback Source.
Do not set thermistor source.
Use analog input 53 as thermistor source.
Use digital input 29 as thermistor source.
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