13 Technical data
Installation manual
21
50A9
R32 Split series
3P600450-8T – 2022.09
Symbol
Meaning
MR*, MRCW*, MRM*, MRN*
Magnetic relay
N
Neutral
n=*, N=*
Number of passes through ferrite
core
PAM
Pulse-amplitude modulation
PCB*
Printed circuit board
PM*
Power module
PS
Switching power supply
PTC*
PTC thermistor
Q*
Insulated gate bipolar transistor
(IGBT)
Q*C
Circuit breaker
Q*DI, KLM
Earth leak circuit breaker
Q*L
Overload protector
Q*M
Thermo switch
Q*R
Residual current device
R*
Resistor
R*T
Thermistor
RC
Receiver
S*C
Limit switch
S*L
Float switch
S*NG
Refrigerant leak detector
S*NPH
Pressure sensor (high)
S*NPL
Pressure sensor (low)
S*PH, HPS*
Pressure switch (high)
S*PL
Pressure switch (low)
Symbol
Meaning
S*T
Thermostat
S*RH
Humidity sensor
S*W, SW*
Operation switch
SA*, F1S
Surge arrester
SR*, WLU
Signal receiver
SS*
Selector switch
SHEET METAL
Terminal strip fixed plate
T*R
Transformer
TC, TRC
Transmitter
V*, R*V
Varistor
V*R
Diode bridge, Insulated-gate
bipolar transistor (IGBT) power
module
WRC
Wireless remote controller
X*
Terminal
X*M
Terminal strip (block)
Y*E
Electronic expansion valve coil
Y*R, Y*S
Reversing solenoid valve coil
Z*C
Ferrite core
ZF, Z*F
Noise filter
13.2
Piping diagram: Outdoor unit
Component PED category classification:
▪ High pressure switches: category IV
▪ Compressor: category II
▪ Other components: refer to PED article 4, paragraph 3
7.9CuT
7.9CuT
M
4.8CuT
4.8CuT
9.5CuT
7.
9Cu
T
9.
5Cu
T
9.5CuT
9.5CuT
9.5CuT
9.5CuT
6.4CuT
6.4CuT
EV
A
EV
B
9.5CuT
6.4CuT
6.4CuT
6.4CuT
9.5CuT
9.5CuT
HPS1
9.5CuT
(9.5CuT)
(12.7CuT)
(6.4CuT)
(6.4CuT)
a
b
c
d
e
f
g
g
h
i
j
A
B
A
B
k
l
l
m
n
o
o
p
q
r
s
t
n
m
i
h
g
c
c
2MXM50
A
Room A
k
Field piping (liquid)
B
Room B
l
Liquid stop valve
