Installation manual
11
RZQ71~12 RZQ100~140B7W1B
Split System air conditioners
4PW21412-1A
E
LECTRICAL
WIRING
WORK
Precautions on electrical wiring work
■
Before obtaining access to terminal devices, all supply circuits
must be interrupted.
■
Use only copper wires.
■
The wiring between the indoor unit and outdoor unit must be for
230 V.
■
Do not turn on the main switch until all the wiring is completed.
Make sure that the main switch has a contact separation of at
least 3 mm in all poles.
■
For W1
Make sure to connect power supply cables in normal phase. If
connected in reverse phase, the remote controller of the indoor
unit indicates "U1" and the equipment cannot operate. Change
any two of the three power supply cables (L1, L2, L3) to correct
phase.
If the contact in the magnetic switch should be forcibly turned on
while the equipment is inoperative, the compressor will burn out.
Never try to forcibly turn on the contact.
■
Never squeeze bundled cables into a unit.
■
Fix cables so that cables do not make contact with the pipes
(especially on high pressure side).
■
Secure the electrical wiring with clamping material as shown in
the figure below so that it does not come in contact with the
piping, particulary on the high-pressure side.
Make sure no external pressure is applied to the terminal
connectors.
■
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.
(See figure 7)
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.
■
All wiring must be performed by an authorized
electrician.
■
All components procured on the site and all electric
construction should comply with the applicable local
and national codes.
■
High voltage
To avoid electrical shock, make sure to disconnect the
power supply 1 minute or more before servicing the
electrical parts. Even after 1 minute, always measure
the voltage at the terminals of main circuit capacitors
or electrical parts and, before touching, make sure
that those voltages are 50 V DC or less.
To persons in charge of electrical wiring work:
Do not operate the unit until the refrigerant piping is
complete. (Running it before the piping is ready will break
the compressor.)
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
1
Wire
2
Bush
3
Nut
4
Frame
5
Hose
A
Inside
B
Outside
3
3
4
5
6
2
1
3
3
4
5
6
V3
W1
1
2
1
2
1
2
