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Electrical installation
Installer reference guide
49
50A
R32 Split series
4P600463-4E – 2021.12
AC
DC
DC
-
+
e
f
g
h
i
j
a
b
k
c
d
l
a
DB1 diode bridge
b
S90 thermistor lead wire
c
LED A
d
S40 thermal overload relay lead wire
e
S20 (white) room A electronic expansion valve coil
f
S21 (red) room B electronic expansion valve coil
g
S80 (white) 4-way valve lead wire connector
h
S70 fan motor lead wire
i
S99 heating lock
j
S91 (red) liquid thermistor lead wire
k
S92 (white)gas thermistor lead wire
l
Multimeter (DC voltage range)
9.1.2 Guidelines when connecting the electrical wiring
Keep the following in mind:
▪
If stranded conductor wires are used, install a round crimp-style terminal on the
end of the wire. Place the round crimp-style terminal on the wire up to the
covered part and fasten the terminal with the appropriate tool.
b
a
a
Stranded conductor wire
b
Round crimp-style terminal
▪
Use the following methods for installing wires:
Wire type
Installation method
Single-core wire
c b
c
a
a
A
AA´
A´
a
Curled single-core wire
b
Screw
c
Flat washer