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Symbol
RC
S*C
S*L
S*NG
S*NPH
S*NPL
S*PH, HPS*
S*PL
S*T
S*RH
S*W, SW*
SA*, F1S
SR*, WLU
SS*
14
Piping diagram
14.1
Piping diagram: Outdoor unit
ARXD25A, ARXD35A
·7.0· CuT
·7.0· CuT
k
·9.5· CuT
M
·9.5· CuT
·9.5· CuT
ı
·7.9· CuT
m
j3
·7.9· CuT
n
a
Liquid field piping
b
Gas field piping
c
Liquid stop valve
d
Gas stop valve
e
Liquid receiver
f
Filter
g
Electronic expansion valve
h
Muffler with filter
i
Capillary tube
j1
Outdoor temperature thermistor
j2
Heat exchanger thermistor
ARXD25+35A5V1B
R32 Split series
3P650253-15Q – 2022.12
Meaning
Receiver
Limit switch
Float switch
Refrigerant leak detector
Pressure sensor (high)
Pressure sensor (low)
Pressure switch (high)
Pressure switch (low)
Thermostat
Humidity sensor
Operation switch
Surge arrester
Signal receiver
Selector switch
j2
h
·4.8· CuT
·6.4· CuT ·6.4· CuT
·4.8· CuT
·9.5· CuT
m
·9.5· CuT
o
Symbol
SHEET METAL
T*R
TC, TRC
V*, R*V
V*R
WRC
X*
X*M
Y*E
Y*R, Y*S
Z*C
ZF, Z*F
g
h
·Ø.4.0 x ID.2.0· CuT
h
·6.4· CuT
c
d
m
·9.5· CuT
j3
Discharge pipe thermistor
k
Heat exchanger
l
4-way valve (ON: heating)
m
Muffler
n
Compressor
o
Accumulator
HPS
High pressure switch (automatic reset)
M
Propeller fan
Refrigerant flow: cooling
Refrigerant flow: heating
14 Piping diagram
Meaning
Terminal strip fixed plate
Transformer
Transmitter
Varistor
Diode bridge, Insulated-gate
bipolar transistor (IGBT) power
module
Wireless remote controller
Terminal
Terminal strip (block)
Electronic expansion valve coil
Reversing solenoid valve coil
Ferrite core
Noise filter
a
·6.4· CuT
b
·9.5· CuT
Installation manual
15
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