Trane RTHC - Tracer Temperature Sensor Option; Percent Condenser Pressure Output; Compressor Percent RLA Output

3 - 12 RTHC-IOM-1C
Both external chilled water setpoint and current limit
setpoint must use the same input type. External
current limit setpoint input must be installed and the
type selected in the UCP2 machine configuration
group.
Tracer Temperature Sensor Option
The options module (1U5) accepts input (J7-7, J7-8)
from a temperature sensor (5RT2) that may be used
by Tracer for chilled water reset, ambient lockout, or
other user-specified functions performed by the
Tracer logic.
Percent Condenser Pressure Output
The options module (1U5) provides a 2-10 VDC
output (J7-1, J7-2) signal that is proportional to the
percent condenser pressure. At 2 VDC output, the
condenser pressure is 0 psia and at 10 VDC output,
the condenser pressure is equal to the high pressure
cutout (psia) specified in the UCP2 machine
configuration group. This output may be used for any
user-specified function such as cooling tower water
temperature control or input to a generic building
automation system. Note that in many applications
such as tower control, events must take place before
reaching either end of the scale, and an appropriate
band must be selected for proper, steady control.
Refer to the instructions supplied with the controlled
device for setup.
Compressor Percent RLA Output
The options module (1U5) provides a 2-10 VDC
output (J7-3, J7-4) signal that is proportional to the
percent compressor RLA.