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17 Electrical installation
Wire type
c b
Stranded conductor
wire with round crimp-
style terminal
a
a Terminal
b Screw
c Flat washer
Allowed
NOT allowed
For earth connections, use the following method:
Wire type
Single-core wire
Or
Stranded conductor
wire twisted to "solid-
like" connection
a Clockwise curled wire (single-core or
twisted stranded conductor wire)
b Screw
c Spring washer
d Flat washer
e Coupling washer
f Sheet metal
Tightening torques
Wiring
Screw size
Transmission wiring
Power supply wiring
8 HP: M5
10+12 HP: M8
17.4
To connect the electrical wiring to
the outdoor unit
CAUTION
▪ When connecting the power supply: connect the earth
cable
first,
before
connections.
▪ When disconnecting the power supply: disconnect the
current-carrying cables first, before separating the earth
connection.
▪ The length of the conductors between the power supply
stress relief and the terminal block itself MUST be as
such that the current-carrying wires are tautened before
the earth wire is in case the power supply is pulled
loose from the stress relief.
NOTICE
▪ Follow the wiring diagram (delivered with the unit,
located at the inside of the service cover).
▪ Make sure the electrical wiring does NOT obstruct
proper reattachment of the service cover.
1 Remove the service cover. See
unit" [ 4 27].
Installation and operation manual
38
Installation method
a
b
c
B
B
Installation method
b
c
d
a
e
f
Tightening torque
M3.5
0.8~0.97 N•m
2.2~2.7 N•m
5.5~7.3 N•m
making
the
current-carrying
"14.2.1 To open the outdoor
2 Connect the transmission wiring as follows:
8 HP
X3M
F1 F2
SFB
a
a
b
F1 F2
a
a
b
F1 F2
a
a
Use the conductor of sheathed wire (2 wire) (no polarity)
b
Terminal board (field supply)
Note: The indoor F1/F2 interconnection cable MUST be shielded:
▪ 8 HP: the shielding is earthed (only at outdoor unit side of the
cable) via the middle screw on the terminal X3M.
▪ 10+12 HP: the shielding is earthed (only at outdoor unit side of
the cable) via a metal P-clamp. Strip the insulation up to the
shielding mesh, to provide full contact of the earth with the
shielding. See illustration below:
a
a
P-clamp for cable shield earthing
Note: For 10+12 HP, the interconnection cable MUST pass through
the ferrite core 3 times (3 passes, 2 turns). See illustration below:
3×
b
a
a
Interconnection cable
b
Ferrite core
3 Connect the power supply as follows:
3N~ 50 / 60 Hz
380-415 / 400 V
L1 L2 L3
a
b
c
X1M
L1 L2 L3
N
a
Earth leakage circuit breaker
b
Fuse
c
Power supply cable
4 Fix the cables (power supply and interconnection cable) with a
cable tie to the stop valve attachment plate and route the wiring
according to the illustration below.
10+12 HP
X1M (A1P)
TO MULTI
TO IN/D
TO OUT/D
UNIT
F1
F2
F1
F2
Q1
Q2
a
a
F1 F2
F1 F2
a
a
F1 F2
F1 F2
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752781-1B – 2024.02
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