Warning
1) Do not use spliced wires, stranded wires, extension cords, or starburst 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.
5) Do not connect the power wire to the indoor unit. Doing so may cause electric shock or fire.
• 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.
1
2
Lock nut
Conduit
mounting
plate
Conduit
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.)
Caution
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.
Stripping wire at terminal block
3)
Pull the wire and make sure that it is tight. Then fix the wire in place with a strain relief.
Wiring
Outdoor unit
1 2 3
L
L
1
2
When wire length exceeds
10 m, use 2.0-mm wires.
1
Indoor
Safety
2
3
breaker
unit
20A
Earth
3
Power supply
1
2
3
terminal block
Use the specified wire type and
connect it securely.
Round crimp-style
terminal
Excessive strip length
Strip wire end
may cause electrical
to this point.
shock or leakage.
Good
Wrong
1.
Trial Operation and Testing.
1-1 Measure the supply voltage and make sure that it falls in the specified range.
1-2 Trial operation should be carried out in either cooling or heating mode.
•
In cooling mode, select the lowest programmable temperature; in heating mode, select the highest
programmable temperature.
1) Trial operation may be disabled in either mode depending on the room temperature.
2) After trial operation is complete, set the temperature to a normal level (78˚F to 82˚F in cooling mode, 68˚F to
75˚F in heating mode).
3) For protection, the unit disables restart operation for 3 minutes after it is turned off.
1-3 Carry out the test operation in accordance with the Operation Manual to ensure that all functions and
parts, are working properly.
•
The air conditioner requires a small amount of power in its standby mode. If the system is not to be used for
some time after installation, shut off the circuit breaker to eliminate unnecessary power consumption.
•
If the circuit breaker trips to shut off the power to the air conditioner, the system will restore the original
operation mode when the circuit breaker is opened again.
2.
Test Items.
Power
Earth leakage
supply
circuit breaker
60Hz 208/230V
Indoor and outdoor units are installed properly on
solid bases.
No refrigerant gas leaks.
Refrigerant gas and liquid pipes and indoor drain
hose extension are thermally insulated.
Shape wires so
that the service
Drain line is properly installed.
lid and shut-off
valve cover fit
System is properly ground to earth.
securely.
The specified wires are used for interconnecting
wire connections.
Indoor or outdoor unit's air intake or exhaust has
clear path of air.
Shut-off valves are opened.
Indoor unit properly receives remote control
commands.
Electric Wire
Run Test and Final Check
Test Items
Fall, vibration, noise
Incomplete cooling/heating function
Water leakage
Water leakage
Electrical leakage
Inoperative or burn damage
Incomplete cooling/heating function
Inoperative
Symptom
Check