Mitsubishi Electric PUZ-WM50VHA Service Manual page 20

PUZ-WM60VAA.UK
PUZ-WM60VAA-BS.UK
CHECK/V(C)
Water OUT
PRV
Plate HEX
TH34
Water IN
Symbol
COMP Compressor
H/P SW High pressure switch (63H)
REV/V Reversing (4-way) valve (21S4)
CHECK/V Charge plug
P-Sensor Refrigerant pressure sensor (63HS)
LEV-A Linear expansion valve -A
LEV-B Linear expansion valve -B
TH3 Liquid temperature thermistor
TH4 Discharge temperature thermistor
TH6 2-phase pipe temperature thermistor
TH7 Ambient temperature thermistor
TH8 Heat sink temperature thermistor
TH33 Comp. surface temperature thermistor
TH34 Plate HEX liquid temperature thermistor Heating: Sub cool liquid temperature Cooling: Evaporating temperature
Rec Receiver
P/B Power circuit board
Plate HEX Plate Heat Exchanger
PRV Pressure relief valve
OCH727
PUZ-WM85VAA.UK
PUZ-WM85VAA-BS.UK
P-Sensor
CHECK/V(L)
Rec
Strainer3
Strainer2
(#100)
(#100)
LEV - B
Strainer4
(#100)
Parts name
DC inverter scroll compressor (Mitsubishi Electric Corporation)
For protection (OFF: 4.15MPa)
Change the refrigerant circuit (Heating / Cooling) and for Defrosting
(H): High pressure/(L): Low pressure/(C): For production test use
For calculation of the saturation temperature from refrigerant pressure
Heating: Secondary LEV
Heating: Primary LEV
Heating: Evaporating temperature
For LEV control and for compressor protection
Heating: Evaporating temperature
For fan control and for compressor frequency control
For power board protection
For protection
For accumulation of refrigerant
Inverter power board
MWA1-44HM (Mitsubishi Electric Corporation)
For water pressure protection (Discharge: 3bar)
PUZ-WM85YAA.UK
PUZ-WM85YAA-BS.UK
REV/V
CHECK/V(H)
H/P SW
Muffler
TH4
TH33
COMP
LEV - A
Strainer1
(#100)
Cooling: Primary LEV
Cooling: Secondary LEV
20
TH7
Heat exchanger
TH6
TH3
Distributer
P/B
TH8
Refrigerant flow in cooling
Refrigerant flow in heating
Detail
Cooling: Sub cool liquid temperature
Cooling: Condensing temperature