Trane Horizon OABD Series Installation, Operation And Maintenance Manual page 112

Appendix
Figure 153. Discharge air temperature sensor (DTC)
INSTALLATION INSTRUCTIONS FOR
DISCHARGE AIR TEMPERATURE SENSOR (DTC)
THE DISCHARGE AIR TEMPERATURE SENSOR IS REQUIRED FOR UNIT OPERATION.
DISCHARGE AIR SENSOR MUST BE INSTALLED AT LEAST 4 FT DOWN DUCT ON UNITS ON UNITS WITHOUT ELECTRIC HEAT,
AND INSTALLED AFTER A TRANSITION ON UNITS WITH ELECTRIC HEAT.
IT'S RECOMMENDED THAT THE DISCHARGE AIR SENSOR BE INSTALLED AFTER A TRANSITION ON UNITS WITH GAS HEAT
TO ALLOW MIXING OF THE STRATIFIED AIR WHEN HEAT CAPACITY IS BELOW 50%.
INSTALL THE SENSOR ON THE SIDE OF THE DUCT AND WIRE TO OAUTS-23 AND 24 ON THE FIELD WIRING TERMINAL STRIP
(NOT POLARITY SENSITIVE).
KCC PART NUMBER: VELSEN-0021
SENSOR MODEL NUMBER: TE-DFG-B1244-00
LINES 58 ON UNIT WIRING DIAGRAM
DTC
OAUTS-23
T T
t°
OAUTS-24
OAUTS FIELD WIRING TERMINAL STRIP
UPDATED 5/21/2020
REV. C
112
DISCHARGE AIR TEMPERATURE SENSOR
TYPICAL UNIT
NOTE: ROOF
NOT SHOWN
ROOF CURB
RETURN DUCT
SUPPLY DUCT
OAU-SVX007A-EN