Refrigerant System Diagram - Mitsubishi Electric TRANE TRUZH0421KA00NA Service Manual

9

REFRIGERANT SYSTEM DIAGRAM

TRUZH0421KA00NA
Ball valve
Refrigerant
GAS pipe
connection
[5/8 [15.88]
Strainer
#50
Charge plug
(Low pressure)
LEV-B
Refrigerant
LIQUID pipe
connection
[3/8 [9.52]
Strainer
#100
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
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
OCHT567
P-sensor
REV/N
L/P SW
Strainer
#100
Strainer
#100
Power
receiver
LEV-C
Parts 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
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
Charge plug
(High pressure)
Muffler
H/P SW
Thermistor
TH32
(Suction)
Thermistor TH4 (Discharge)
Thermistor TH34 (Comp. surface)
Strainer
#100
Injection port
COMP
HIC
Cooling:Primary LEV
Cooling:Secondary LEV
16
Unit: inch [mm]
Thermistor TH7
(Ambient)
Heat exchanger
Thermistor
TH6
(2-phase pipe)
Thermistor TH3
(Liquid)
Distributor
Strainer
#100
LEV-A
Refrigerant flow in cooling
Refrigerant flow in heating
Detail
Cooling:Sub cool liquid temperature