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NC/NC TERMINALS
The two NC terminals are currently not used and provide no
functionality at this time. Do not use.
DISCHARGE TEMPERATURE SENSOR INPUT
The smart controller has the capability to monitor and con-
trol the compressor’s refrigerant discharge temperature. The
thermistor input range is -22 F to 320 F, accuracy of -3%/
+0%, with a maximum allowable sensor cable length of
30 ft. The smart controller will process the input from the
discharge temperature sensor and operate the compressor’s
cylinder head fan and liquid injection valve as required to
control compressor discharge temperature below 230 F.
Every smart controller comes with a 1000 ohm resistor
installed. Remove only if installing the Carlyle discharge
temperature sensor for discharge temperature control;
otherwise do not remove the resistor.
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