6 Installation
Installer and user reference guide
25
5TMV1B
VRV IV-S system air conditioner
4P404224-1 – 2015.03
NOTICE
Precautions when laying power wiring:
▪ Do not connect wiring of different thicknesses to the
power terminal block (slack in the power wiring may
cause abnormal heat).
▪ When connecting wiring which is the same thickness,
do as shown in the figure below.
▪ For wiring, use the designated power wire and connect
firmly, then secure to prevent outside pressure being
exerted on the terminal board.
▪ Use an appropriate screwdriver for tightening the
terminal screws. A screwdriver with a small head will
damage the head and make proper tightening
impossible.
▪ Over-tightening the terminal screws may break them.
Tightening torques
Wiring
Screw size
Tightening torque
(N•m)
Power supply wiring
(power
shielded ground)
M5
2.0~3.0
Transmission wiring
M3.5
0.8~0.97
6.8.5
To connect the electrical wiring on the
outdoor unit
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
"6.2.2 To open the outdoor
unit" on page 15
.
2
Strip insulation (20 mm) from the wires.
a
b
a
Strip wire end to this point
b
Excessive strip length may cause electrical shock or
leakage.
3
Connect the transmission wiring as follows:
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).
TO IN/D UNIT
F1 F2 F1 F2
TO OUT/D UNIT
a
a
Earth
4
Connect the power supply as follows:
1~ 50 Hz
220-240 V
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.
N
L
a
X1M
X2M
b
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.
