SYSTEM OPERATION
17
COOLING CYCLE
LEGEND:
Tl = Thermistor (Outdoor Liquid Temperature)
Td = Thermistor (Discharge Temperature)
Ta = Thermistor (Outdoor Air Temperature)
HP/LP sensor = High/Low Pressure Sensor
HPS = High Pressure Switch
Tm = Thermistor (Outdoor Coil Temperature)
Piping Diagram with TXV applicable indoor unit (2 - 4 Ton)
Hex
Fan
Motor
Td Thermistor
Filter
dryer
Stop
Valve
(Liquid)
Ball Valve
(Gas)
Fan
Motor
Hex
HP/LP
HP/LP sensor
Ta Thermistor
HPS
Outdoor unit
Indoor unit
TXV
Accumulator
Tm
Thermistor
T Thermistor
Oil
separator
Filter
Compressor
Crankcase
heater
Capillary tube
Reversing
Valve
Filter
Filter
Check
valve
EEV
Hex
Fan
Motor
Filter
dryer
Stop
Valve
(Liquid)
Ball Valve
(Gas)
Fan
Motor
Hex
HP/LP
HP/LP sensor
Tm
Thermistor
Ref cooling
Ta Thermistor
Outdoor unit
Indoor unit
TXV
Check
valve
Td Thermistor
Filter
Compressor
Capillary tube
HPS
Oil
separator
Accumulator
T Thermistor
Reversing
Valve
Check
valve
EEV
Filter
Filter
Piping Diagram with TXV applicable indoor unit (5 Ton)