Refrigerant System Diagram - Mitsubishi Electric Mr.Slim PUHZ-SHW80VHA Service Manual

8

REFRIGERANT SYSTEM DIAGRAM

PUHZ-SHW80VHA
PUHZ-SHW112YHA
Ball valve
Refrigerant
GAS pipe
Strainer
connection
#50
(5/8 inch)
Charge plug
(Low pressure)
Strainer
#100
Linear
expansion valve B
Refrigerant
LIQUID pipe
Strainer
connection
#100
(3/8 inch)
Stop valve
(with service port)
Symbol
COMP Compressor
H/P SW High pressure switch (63H)
L/P SW Low pressure switch (63L)
REV/V Reversing (4-way) valve (21S4)
Charge plug Charge plug
P-Sensor Pressure sensor (63HS)
LEV-A Linear expansion valve -A
LEV-B Linear expansion valve -B
LEV-C Linear expansion valve -C
TH32 Suction temperature thermistor
Refrigerant leakage detection
TH33
(Ref. check) thermistor
TH3 Liquid temperature thermistor
TH4 Discharge temperature thermistor
TH6 2-phase pipe temperature thermistor
TH7 Ambient temperature thermistor
TH34 Comp. surface temperature thermistor For protection
Power Receiver Power Receiver
HIC Heat interchange circuit
Plate HEX Plate Heat Exchanger
TH1 Outlet water temperature thermistor
TH2 Liquid pipe temperature thermistor
OCH526
PUHZ-SHW112VHA
PUHZ-SHW140YHA
Solenoid valve
(Four-way valve)
Low pressure
switch 63L
Strainer
#100
Power
receiver
Linear
expansion valve C
Part name
DC inverter scroll compressor (Mitsubishi Electric Corporation)
For protection (OFF: 4.15MPa)
For protection (OFF: -0.03MPa)
Change the refrigerant circuit (Heating / Cooling) and for Defrosting
High pressure / Low pressure / For production test use
For calculation of the condensing temperature from high pressure
Heating:Secondary LEV
Heating:Primary LEV
For HIC (heating only)
For LEV control
For refrigerant leakage detection
Heating:Evaporating temperature
For LEV control and for compressor protection
Outdoor 2-phase pipe temperature
For fan control and for compressor frequency control
For accumulation of refrigerant
For high heating capacity
MWA2-38PA (MITSUBISHI)
For fl ow temp. controller
For fl ow temp. controller
High pressure sensor (63HS)
Charge plug
(High pressure)
Muffler
High pressure
switch 63H
Thermistor
TH32
(Suction)
Thermistor TH4
(Discharge)
Thermistor TH34
(Comp. surface)
Strainer
#100
Injection port
Compressor
Heat interchange circuit
Cooling:Primary LEV
Cooling:Secondary LEV
15
Thermistor TH7
(Ambient)
Heat exchanger
Thermistor
TH6
(2-phase pipe)
Distributor
Thermistor TH33
(Ref. check)
Strainer
#100
Linear expansion valve A
Refrigerant flow in cooling
Refrigerant flow in heating
Detail
Cooling:Sub cool liquid temperature
<Reference>
System example
Thermistor TH3
(Liquid)