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When installing the earth leakage breaker make sure that it is
compatible with the inverter (resistant to high frequency
electrical noise) to avoid unnecessary opening of the earth
leakage breaker.
As this unit is equipped with an inverter, installing a phase
advancing capacitor not only will deteriorate power factor
improvement effect, but also may cause capacitor abnormal
heating accident due to high-frequency waves. Therefore, never
install a phase advancing capacitor.
Secure the wiring in the order shown below.
1
Secure the ground wire to the shut-off valve attachment plate so
that it does not slide.
2
Secure the ground wire to the shut-off valve attachment plate
one more time along with the electric wiring and the inter-unit
wiring.
Lay the electrical wiring so that the front cover does not rise up
when doing wiring work and attach the front cover securely.
V3
3
4
5
6
1
Switch box
2
Stop valve mounting plate
3
Ground
4
Tie-wrap
5
Wiring between units
6
Power supply and ground wiring
2
1
1
Power supply wiring and earth wire
2
Wiring between unit
Installation manual
11
1
2
3
2
1
2
1
When cables are routed from the unit, a protection sleeve for the
conduits (PG-insertions) can be inserted at the knock-out hole.
(See figure 7)
1
Wire
2
Bush
3
Nut
4
Frame
5
Hose
A
Inside
B
Outside
When you do not use a wire conduit, be sure to protect the wires
with vinyl tubes to prevent the edge of the knock-out hole from
cutting the wires.
Follow the electric wiring diagram for electrical wiring works.
Form the wires and fix the cover firmly so that the cover may be
fit in properly.
Precautions on wiring of power supply and inter-unit
wiring
Use a round crimp-style terminal for connection to the power
supply terminal board. In case it cannot be used due to
unavoidable reasons, be sure to observe the following
instruction.
1
2
3
1
2 3
-
Do not connect wires of different gauge to the same power
supply terminal. (Looseness in the connection may cause
overheating.)
-
When connecting wires of the same gauge, connect them
according to the below figure.
Use the correct screwdriver to tighten the terminal screws.
Small screwdrivers can damage the screw head and prevent
appropriate tightening.
Over-tightening the terminal screws can damage the screws.
See the table below for tightening torques for the terminal
screws.
Tightening torque (N•m)
M4 (X1M)
M5 (X1M)
M5 (EARTH)
Refer to the installation manual attached to the indoor unit for
wiring of indoor units, etc.
Attach an earth leakage breaker and fuse to the power supply
line.
(See figure 9)
I
Pair
II
Twin
III
Triple
IV
Double twin
M
Master
S
Slave
1
Earth leakage breaker
2
Fuse
3
Remote controller
Round pressure terminal
Cut out section
Cup washer
1.2~1.8
2.0~3.0
3.0~4.0
RZQS71~125B7V3B
Split System air conditioners
4PW32097-1A
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