Refrigerant System Diagram - Mitsubishi Electric PUZ-HWM140VHA Service Manual

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REFRIGERANT SYSTEM DIAGRAM

PUZ-HWM140VHA(-BS)
Water OUT
PRV
Plate HEX
Water IN
TH34
Symbol
COMP Compressor
H/P SW High pressure switch (63H)
Plate HEX Plate Heat Exchanger
REV/V Reversing (4-way) valve (21S4)
STOP VALVE Stop valve
CHECK/V Check valve
P-Sensor Pressure sensor (63HS)
P/B Power board
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 thermistor
TH34 Plate HEX liquid temperature thermistor Heating: Sub cool liquid temperature Cooling: Evaporating temperature
TH7 Ambient temperature thermistor
TH8 Heatsink temperature thermistor
TH33 Comp. surface temperature thermistor For compressor protection
Power Power Receiver
Receiver
HIC Heat interchange circuit
OCH748
PUZ-HWM140YHA(-BS)
P-Sensor
STOP VALVE
CHECK/V
Power
Receiver
Strainer
(#100)
LEV-B
Strainer(#100)
Part name
DC inverter scroll compressor (Mitsubishi Electric Corporation)
For protection (OFF: 4.15MPa)
MWA2-34HM(Mitsubishi Electric Corporation)
Change the refrigerant circuit (Heating / Cooling) and for Defrosting
For refrigerant charge
High pressure / Low pressure
For calculation of the saturation temperature from refrigerant pressure
Inverter power board
Heating: Secondary LEV
Heating: Primary LEV
For HIC (heating only)
For LEV control
Heating: Evaporating temperature
For LEV control and for compressor protection
Heating: Evaporating temperature Cooling: Condensing temperature
For fan control and for compressor frequency control
For power board protection
For accumulation of refrigerant
For high heating capacity
REV/V
CHECK/V
H/P SW
Strainer
(#100)
TH32
TH33
Strainer
INJ Port
(#100)
COMP
LEV-C
18
TH6
TH7
Distributor
TH4
Strainer(#100)
TH8 P/B
HIC
Refrigerant flow in cooling
Refrigerant flow in heating
Detail
Cooling: Primary LEV
Cooling: Secondary LEV
Cooling: Sub cool liquid temperature
TH3
LEV-A