15 Electrical installation
Installation and operation manual
27
RXYSQ4~6T8V/YB(*)
VRV IV-S system air conditioner
4P482275-1B – 2020.10
NOTICE
You must use shielded wire and connect the earth to the
transmission terminal (X2M).
C/H SELECTOR
A B C F1 F2 F1 F2
TO IN/D
UNIT
V Y
F1 F2 F1 F2
TO IND TO OUTD
TO OUT/D
UNIT
aa
a Earth
3 Connect the power supply as follows:
1~ 50 Hz
220-240 V
L
L
N
V Y
X1M
3N~ 50 Hz
380-415 V
L1 L2 L3
L1 L2 L3
N
X1M
a
b
c
a Earth leakage circuit breaker
b Fuse
c Power supply cable
4 Fix the cables (power supply and transmission wiring) with
cable ties.
a Cable tie
b Attachment plate
X1M Power supply
X2M Transmission wiring
5 Route the wiring through the frame and connect it to it.
Routing through
the frame
a Power supply cable
b Transmission wiring cable
Connecting to the
frame
When cables are routed from the unit, a
protection sleeve for the conduits (PG
insertions) can be inserted at the knockout
hole.
When you do not use a wire conduit,
protect the wires with vinyl tubes to
prevent the edge of the knockout hole from
cutting the wires.
A Inside of the outdoor unit
B Outside of the outdoor unit
a Wire
b Bush
c Nut
d Frame
e Hose
NOTICE
Precautions when making knockout holes:
▪ Avoid damaging the casing and underlying piping.
▪ After making the knockout holes, we recommend to
remove the burrs and paint the edges and areas
around the edges using repair paint to prevent rusting.
▪ When passing electrical wiring through the knockout
holes, wrap the wiring with protective tape to prevent
damage.
6 Reattach the service cover.
7 Connect an earth leakage circuit breaker and fuse to the power
supply line.
15.5 To finish the transmission wiring
After installing the transmission wires inside the unit, wrap them
along with the on-site refrigerant pipes using finishing tape, as
shown in figure below.
a Liquid pipe
b Gas pipe
c Insulator
d Transmission wiring (F1/F2)
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