Refrigerant Circuit - Mitsubishi Electric PQHY-P72TYHMU-A Service Handbook

[ III Heat source Unit Components ]

2. Refrigerant circuit

(1) PQHY-P72, 96, 120THMU-A, PQHY-P72, 96, 120YHMU-A
Check valve(CV6a)
Solenoid valve block
(SV4a, SV4b, SV4d)
Solenoid valve(SV7b)
Transformer Box
(YHMU only)
Check valve(CV4a)
Check valve(CV11)
Water heat exchanger
HWE09080
Oil separator(O/S)
Solenoid valve(SV1a)
Check valve(CV8)
- 76 -
LEVINV
Check valve(CV7a)
Solenoid valve(SV7a)
Solenoid valve(SV9)
Low-pressure sensor
(63LS)
Compressor(COMP)
Check joint (high pressure)(CJ1)
Check joint (low pressure)(CJ2)
Component cooler
heat exchanger
4-way valve(21S4a)
Check valve(CV5a)
Check valve(CV3a)
High-pressure
sensor(63HS1)
High-pressure
switch(63H1)
Check valve(CV2a)
Accumulator
(ACC)
Refrigerant service valve
(low pressure)(BV1)
Refrigerant service valve
(high pressure)(BV2)
GB