Trane ReliaTel Diagnostic Manual page 61

BAYSENS016A Sensor w/ plug (see: SENS-IN-12) Thermistor Sensor (OAS,
SAS, RAS, CTS)
Outdoor Air Sensor: Located in the condenser section, lower left corner. The compressor access
panel has a slotted opening to provide airflow across the sensor. Standard with all ReliaTel
controlled units.
Return Air Sensor: Field or factory installed accessory. Located on the return air damper of the
economizer, used with comparative enthalpy control only.
Coil Temperature Sensor: Located in a 3/8" copper tube well, which is brazed to the lowest circuit
entering the outdoor coil (2-10 ton heat pumps only).
Mixed Air Sensor: Field or factory installed in the supply fan section, protruding through the fan
housing.
Discharge Air Sensor: Field or factory installed in the supply fan section, using anaveraging tube
located downstream of the heat section.
Figure 31. Thermistor Sensor
Component Description
Thermistor Sensor (OAS, SAS, RAS, MAS, CTS
BAYSENS017B/ASYSTAT669A (obsolete)
Accessory Zone Sensor Remote. Two conductors required.
Figure 32. BAYSENS017B/ ASYSTAT669A Layout
Component Description
BAYSENS017B
ASYSTAT669A
RT-SVD03G-EN
)
Thermostats and Sensors
Part Number
SEN-0339
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