Suction Pressure Transducer; Suction Temperature Thermistor - Rheem P17 Series Installation Instructions Manual

7.15 Suction Pressure Transducer

(-)P17 heat pumps are equipped with a suction pressure transducer for the
purpose of measuring the suction pressure between the reversing valve
and the accumulator. The output of this device is a 0.5 – 4.5VDC signal
that the VSODC converts to a pressure used in calculating the heating
mode suction superheat. The measured suction superheat is used for
controlling the position of the outdoor EXV to maintain the correct heating
mode superheat level. The VSODC communicates the suction pressure
and heating mode superheat level to the EcoNet™ Control Center where
they are displayed on outdoor unit status screen.

7.16 Suction Temperature Thermistor

(-)P17 heat pumps are equipped with a suction line
thermistor for the purposes of measuring suction gas
temperature during the heating mode. The measured
temperature is paired with the saturated suction
temperature and used by the VSODC to calculate
superheat and adjust the outdoor EXV to maintain
the correct superheat level.
Thermister Location
7.0 COMPONENTS & CONTROLS
IMPORTANT:
line thermistor securely attaches to the alternate
suction line at the 10 to 2 o'clock position with a
corrosion resistant stainless steel clip. Insulation is
factory installed over the suction line thermistor and
suction line. This thermistor is provided with the coil
thermistor as a single harness.
The clamp on the suction
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