Refrigerant Circuit; Models: Aou18Rglx, Aou24Rglx, Aou30Rglx, And Aou36Rglx - Fujitsu AUU18RGLX Design & Technical Manual

4. Refrigerant circuit

4-1. Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and
AOU36RGLX
Muffler
Pressure
switch
Th
D
Th
C
Th
C
Th
D
Th
O
Th
HO
Th
R
Th
PI

4-1. Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX

3-Way
valve
4-Way valve
Pressure
check valve
: Cooling
: Heating
: Thermistor (Compressor temperature)
: Thermistor (Discharge temperature)
: Thermistor (Outdoor temperature)
: Thermistor (Heat exchanger Out temperature)
: Thermistor (Room temperature)
: Thermistor (Pipe temperature)
Heat exchanger
( INDOOR )
Th
Th
R
Heat exchanger
( OUTDOOR )
Th
O
- 78 -
PI
2-Way
valve
Strainer
Expansion valve
Strainer
Th
HO
4. Refrigerant circuit