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6 Installation
Installer and user reference guide
27
RXYSQ4~Y1B
VRV IV-S system air conditioner
4P404676-1A – 2016.03
F1 F2
F1 F2
F1 F2
F1 F2
F1 F2
F1 F2
a
b
X2M
TO OUT/D
TO IN/D
a
Use the conductor of sheathed wire (2 wire) (no polarity)
b
Terminal board (field supply)
WARNING
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
V1
Y1
F1 F2 F1 F2
TO IND TO OUTD
TO OUT/D
UNIT
a
a
a
Earth
4
Connect the power supply as follows:
1~ 50 Hz
220-240 V
L
L
N
V1
Y1
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
5
Fix the cables (power supply and transmission wiring) with
cable ties.
V1
Y1
X1M
X2M
a
a
b
a
a
X2M
a
a
b
X1M
a
a
a
Cable tie
b
Attachment plate
X1M
Power supply
X2M
Transmission wiring
6
Route the wiring through the frame and connect it to it.
Routing through
the frame
a
b
a
b
a
b
2
3
1
a
Power supply cable
b
Transmission wiring cable