Specifications
EDUS04-740 Installation Manual
Room Air Conditioners D-Series 53
Wiring
Do not turn ON the safety breaker until all work is completed.
1)
Strip the insulation from the wire (3/4 in).
2) Connect the connection wires between the
indoor and outdoor units so that the terminal
numbers match. Tighten the terminal screws
securely. We recommend a flathead screwdriver
be used to tighten the screws.
The screws are packed with the terminal board.
3) Pull the wire and make sure that it is tight. Then fix the wire in place with a strain relief.
Observe the notes mentioned below when wiring to the power
supply terminal board.
Precautions to be taken for power supply 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.)
When connecting the connection wires to the terminal board using a single core wire, be sure to perform curling.
Problems with the work may cause heat and fires.
Strip wire end
to this point.
Excessive strip length
may cause electrical
shock or leakage.
Good Wrong
Electric Wire
Round crimp-style
terminal
Caution
Stripping wire at terminal block
3
2
1
123
Safety
breaker
15A
Earth leakage
circuit breaker
Earth
When wire length exceeds
10 m, use 2.0-mm wires.
Outdoor unit
Indoor
unit
Power
supply
60Hz 208/230V
L
1
L
2
1) Do not use spliced wires, stand wires, extension cords, or starbust connections, as they may cause
overheating, electrical shock, or fire. Follow all Local, and State electrical codes.
2) Do not use locally purchased electrical parts inside the product. (Do not overload the circuit by adding drain
pump or other electrical equipment to unit terminals.) Doing so may cause electric shock or fire.
3) Be sure to install an earth leak detector. (One that can handle higher harmonics.)
(This unit uses an inverter, which means that it must be used an earth leak detector capable handling
harmonics in order to prevent malfunctioning of the earth leak detector itself.)
4) When carrying out wiring connection, take care not to pull at the conduit.
Warning
1 2 3
1 2 3
Power supply
terminal block
Shape wires so
that the service
lid and shut-off
valve cover fit
securely.
Use the specified wire type and
connect it securely.
Conduit
mounting
plate
Conduit
Lock nut