Mitsubishi Electric PUHZ-SW75VAA-SC Service Manual page 19

PUHZ-SW75VAA.UK
PUHZ-SW75VAA-BS.UK
PUHZ-SW75VAA-SC.UK
ball valve
Refrigerant GAS pipe
connection [15.88(5/8)
Stop valve
(with service port)
Refrigerant LIQUID pipe
connection [9.52(3/8)
Symbol
COMP Compressor
H/P SW High pressure switch (63H)
L/P SW Low pressure switch (63L)
REV/V Reversing (4-way) valve (21S4)
CHECK/V 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
(PUHZ-SHW Suction temperature thermistor
only)
TH3 Liquid temperature thermistor
TH4 Discharge temperature thermistor
TH6 2-phase pipe temperature thermistor
TH7 Ambient temperature thermistor
TH33 Comp. surface temperature thermistor For protection
Rec Receiver
HIC Heat interchange circuit
Plate HEX Plate Heat Exchanger
TH1 Outlet water temperature thermistor
TH2 Liquid pipe temperature thermistor
OCH651A
PUHZ-SW75YAA.UK
PUHZ-SW75YAA-BS.UK
PUHZ-SW75YAA-SC.UK
Strainer6
(#50)
CHECK/V(L)
Rec
Strainer3
(#100)
Strainer2
(#100)
LEV-B
Strainer4
(#100)
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
SHW112/SHW80/SW100: MWA2-38PA
SW75: MWA1-44DM
For flow temp. controller
For flow temp. controller
P-SENSOR
REV/V
CHECK/V(H)
H/P SW
MUFFLER
TH4
TH33
COMP
LEV-A
Strainer1
(#100)
Detail
Cooling:Primary LEV
Cooling:Secondary LEV
19
unit: mm (in)
Heat exchanger
TH7
TH6
TH3
TH8 P/B
Refrigerant flow in cooling
Refrigerant flow in heating
Cooling:Sub cool liquid temperature
<Reference>
System example