19
9
REFRIGERANT SYSTEM DIAGRAM
unit : mm(inch)
Distributor
Thermistor TH7
(Ambient)
Heat exchanger
Refrigerant LIQUID pipe
connection
:
9.52(3/8)
Stop valve
(with service port)
Strainer
#100
Power
receiver
Linear
expansion valve B
Linear expansion valve A
Strainer
#100
Thermistor TH6
(2-phase pipe)
Thermistor TH3
(Liquid)
High pressure
switch 63H
Thermistor TH4
(Discharge)
Thermistor TH34
(Comp. surface)
Compressor
Strainer
#50
Strainer
#100
Strainer
#100
4-way valve
Charge plug
(Low pressure)
Charge plug
(High pressure)
Stop valve
(with service port)
Refrigerant GAS pipe
connection
:
15.88(5/8)
Pressure
sensor 63HS
Distributor
Thermistor TH7
(Ambient)
Heat exchanger
Refrigerant GAS pipe
connection ø15.88(5/8)
Refrigerant LIQUID pipe
connection ø9.52(3/8)
Stop valve
(with service port)
Strainer
#100
Power
receiver
Linear
expansion valve B
Linear expansion valve A
Strainer
#100
Strainer
#100
Thermistor TH6
(2-phase pipe)
Thermistor TH3
(Liquid)
Charge plug
(Low pressure)
Charge plug
(High pressure)
High pressure
switch 63H
Thermistor TH4
(Discharge)
Thermistor TH34
(Comp. surface)
Compressor
Strainer
#50
4-way valve
Strainer
#100
Strainer
#100
Ball valve
Refrigerant flow in cooling
Refrigerant flow in heating
Pressure
sensor 63HS
Low pressure
switch 63L
PUHZ-SW100VHA
PUHZ-SW100VHA-BS
PUHZ-SW100YHA
PUHZ-SW100YHA-BS
PUHZ-SW75VHA.UK
PUHZ-SW75VHA-BS.UK
PUHZ-SW120VHA
PUHZ-SW120VHA-BS
PUHZ-SW120YHA
PUHZ-SW120YHA-BS
COMP
H/P SW
L/P SW
REV/V
Charge plug
P-Sensor
LEV-A
LEV-B
TH3
TH4
TH6
TH7
TH34
DC inverter twin rotary compressor (Mitsubishi Electric Corporation)
For protection (OFF:4.15MPa)
For protection (OFF:-0.03MPa) (SW100/120)
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
Cooling:Primary LEV
Heating:Primary LEV
Cooling:Secondary LEV
Heating:Evaporating temperature
Cooling:Sub cool liquid temperature
For LEV control and for compressor protection
Outdoor 2-phase pipe temperature
For fan control and for compressor frequency control
For compressor protection
For accumulation of refrigerant
Compressor
High pressure switch (63H)
Low pressure switch (63L)
Reversing (4-way) valve (21S4)
Charge plug
Pressure sensor (63HS)
Linear expansion valve -A
Linear expansion valve -B
Liquid temperature thermistor
Discharge temperature thermistor
2-phase pipe temperature thermistor
Ambient temperature thermistor
Comp.surface temperature thermistor
Power Receiver
Symbol
Part name
Detail
Power Receiver
OCH533A
