18 | Electrical installation
Installer and user reference guide
69
FXFA20~125A2VEB
VRV system air conditioner
4P599624-1A – 2020.06
Wire type Installation method
Stranded conductor wire
with round crimp-style
terminal
a Terminal
b Screw
c Flat washer
O Allowed
X NOT allowed
Tightening torques
Wiring Screw size Tightening torque
(N•m)
Power supply cable M4 1.2~1.4
Transmission cable
(indoor↔outdoor)
M3.5 0.79~0.97
User interface cable
▪ The earth wire between the wire retainer and the terminal must be longer than
the other wires.
18.1.3 Specifications of standard wiring components
Component Class
20~40 50+63 80 100 125
Power supply
cable
MCA
(a)
0.3A 0.4A 0.6A 0.8A 1.3A
Voltage 220~240V
Phase 1~
Frequency 50/60Hz
Wire sizes 1.5mm
2
(3‑core wire)
H07RN-F (60245 IEC 66)
Transmission wiring 0.75 to 1.25mm
2
(2‑core wire)
H05RN-F (60245 IEC 57)
User interface - maximum 500m
User interface cable
Recommended field fuse 6A
Residual current device Must comply with applicable legislation
(a)
MCA=Minimum circuit ampacity. Stated values are maximum values (see electrical data of
indoor unit for exact values).