Circuit Diagrams; Refrigerant Circuit - Fujitsu Airstage J-II Service Manual

5-1 REFRIGERANT CIRCUIT

MODELS : AJ A36, 45, 54 LALH
Outdoor unit
HPS
HPSW
OS
TH1
CMP
INV
SV2
TH10
CMP
ACM
Indoor unit1
TH21
FAN21
TH23
HEX21
Indoor unit2
TH21
FAN21
TH23
HEX21
Outdoor unit
LPS: Low Pressure Sensor
HPS: High Pressure Sensor
ACM: Accumulator
INV: Inverter Compressor
HEX: Heat Exchanger
SCHEX: Sub cool Heat Exchanger
OS: Oil Separator
: Expansion Valve
: Solenoid Valve
: Strainer
: Check Valve
: Thermistor
: Pressure Regulation Valve
(Operation Pressure: 3.95MPa)
FAN1
FAN2
TH5
HEX
TH4
TH3
LPS
ACM
EEV21
TH22
EEV21
TH22
TH1: Discharge temp.
TH3: Outdoor temp.
TH4: Suction temp.
TH5: Heat Exchanger Liquid Pipe temp.
TH7: Sub cool Heat Exchanger Outlet Liquid temp.
TH8: Sub cool Heat Exchanger Inlet Gas temp.
TH9: Sub cool Heat Exchanger Outlet Gas temp.
TH10: Compressor (shell) temp
SV2: Pressure Equalization Valve
EEV1: Electric Expansion Valve 1
(Total refrigerant amount control)
EEV2: Electric Expansion Valve 2
(Liquid refrigerant amount control)
FAN1: Upper FAN
FAN2: Lower FAN
05-01
EEV2
TH8
SC HEX
TH7
EEV1
TH9
LIQUID LINE
GAS LINE
Indoor unit
HEX21: Indoor uit Heatr Exchanger
TH21: Room temp.
TH22: Heat Exchanger (Inlet ) temp.
TH23: Heat Exchanger (Outlet) temp.
EEV21: Electric Expansion Valve
(Refrigerant amount adjustment )
FAN 21: Indoor unit FAN