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•
Electricians having suffi cient knowledge should perform the
electric wiring work.
All wiring must comply with local electrical codes and Na-
tional Electrical Code (NEC).
•
Perform the electric wiring work in accordance with the
"electric wiring diagram label".
Make sure to turn OFF the branch switch and overcurrent
protective device before starting the work.
•
Perform grounding to the indoor unit and outdoor unit.
•
Use only copper wires.
•
Make sure to turn the power off before starting the electric
wiring work.
Do not turn ON any switch until the work is completed.
•
The outdoor unit has an inverter which generates noise and
charges the outer casing with the leakage current. The
outdoor unit should be grounded so that the effect of the
generated noise on other equipment can be reduced, and
that the outer casing can be discharged.
•
As this unit is equipped with an inverter, installing a phase
advancing capacitor will not only reduce the power factor
improvement factor, but may also cause the capacitor to
overheat due to high-frequency waves. Therefore, never
install a phase advancing capacitor.
•
Never push excessive electric wires into the units.
•
Protect electric wires with conduit tubes or vinyl tubes so
that they will not be damaged by edges of knockout holes.
•
Fix electric wires with clamps as accessories so that they will
not come to contact with pipes and stop valves.
(Refer to "7-3 Power supply wiring connection procedure".)
7-1
Connection example of whole system wiring
Ground fault
circuit interrupter
Branch switch
overcurrent
protective device
208/230V
Ground
Power
208/230V
Indoor
unit
16V
Ground
13
Power
Outdoor unit
16V
Remote
controller
7-2
Routing power supply wiring and transmission
wiring
Let the power supply wiring with a conduit pass through one of
the knockout holes on the front or side cover, and let the
transmission wiring with a conduit pass through another
knockout hole.
•
For protection from uninsulated live parts, thread the power
supply wiring or the transmission wiring through the included
insulating tube and secure it with the included clamp.
Insulating tube
Clamp
(accessory)
(accessory)
〈Precautions when knocking out knockout holes〉
•
To punch the knockout hole, hit it with a hammer.
•
After removing the knockout hole, it is recommended that
the edges should be painted to prevent rusting.
CAUTION
•
Use conduit for both the power supply wiring and transmis-
sion wiring.
•
Outside the unit, make sure to keep the wirings 5 inches
away.
Otherwise, the outdoor unit may be affected by electrical
noise (external noise), and malfunction or fail.
•
Be sure to connect the power supply wiring to the terminal
block and secure it as described in "7-3 Power supply wiring
connection procedure".
•
Fix the wiring between the units in accordance with
"7-4 Transmission wiring connection procedure".
•
Secure the wirings with the clamps (accessory) so that do
not touch the piping.
•
Make sure the wirings will not be pinched by the front panel,
and close the panel fi rmly.
•
Route the conduit along the unit by using a elbow socket
and so on to prevent it from being stepped on.
7-3
Power supply wiring connection procedure
WARNING
•
Never connect power supply wiring to the terminal block for
remote controller wiring as this could damage the entire system.
Install a ground fault circuit interrupter.
•
It is obliged to install a ground fault circuit interrupter to
prevent electric shock and fi re accident.
Phase and
Model
Voltage
frequency
RZQ18PVJU8
RZR18PVJU8
RZQ24PVJU8
1~60Hz
208/230V
RZR24PVJU8
RZQ30PVJU8
RZR30PVJU8
Power supply wiring
or
Transmission wiring
(3in.)
Max.Overcurrent
Min. Circuit
Protective Device
Amps.
20A
16.5A
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