Installation manual
11
RZQS71~125B7V3
Split System air conditioners
4PW32097-1
■
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.
■
When cables are routed from the unit, a protection sleeve for the
conduits (PG-insertions) can be inserted at the knock-out hole.
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.
-
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.
■
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.
1
Switch box
2
Stop valve mounting plate
3
Ground
4
Tie-wrap
5
Wiring between units
6
Power supply and ground wiring
1
Power supply wiring and earth wire
2
Wiring between unit
3
3
4
5
6
2
1
V3
1
2
1
2
1
2
1
Wire
2
Bush
3
Nut
4
Frame
5
Hose
A
Inside
B
Outside
Tightening torque (N•m)
M4 (X1M)
1.2~1.8
M5 (X1M)
2.0~3.0
M5 (EARTH)
3.0~4.0
I
Pair
II
Twin
III
Triple
IV
Double twin
M
Master
S
Slave
1
Earth leakage breaker
2
Fuse
3
Remote controller
1
2 3
1
Round pressure terminal
2
Cut out section
3
Cup washer
