Refrigerant Circuit Diagram - Mitsubishi Electric CAHV-R450YA-HPB Service Manual

[ VI Refrigerant Circuit ]

[1] Refrigerant Circuit Diagram

VI Refrigerant Circuit
Four-way valve
21S4b 3)
Air-side
heat
exchanger
Distributor
TH4
Air-side
heat
exchanger
TH9
Distributor
Strainer
S
HWE22020
HP
HP
TH1
Compressor
LEV 2
E
LEV 1
E
S
Sub cool coil
Strainer
LEV 3
E
Four-way valve
21S4a 3)
Check joint 2)
Check joint 1)
63H1
PSL1
LP
PSH1
Water-side
heat
exchanger
TH21
TH2
TH3
Receiver
- 73 -
Refrigerant flow direction
Heating mode
Defrost mode
Water flow direction
Symbol explanation
Symbol Description
PSH1 High pressure sensor
PSL1 Low pressure sensor
63H1 High pressure switch
TH1 Discharge temp.
TH2 Suction temp.
TH11
TH3 Compressor temp.
TH4 Heat exchanger temp.
TH9 Outdoor air temp.
TH10 Water inlet temp.
TH11 Water outlet temp.
TH10
TH21 Water heat exchanger temp.
Joints and valves
NO.
Check joint
1)
(Low pressure extraction)
Check joint
2)
(High pressure extraction)
3) Four-way valve
Name
GB