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English
Wiring
WARNING
• Do not ground units to water pipes, gas pipes, telephone wires, or lightning rods as incomplete grounding can cause a
severe shock hazard resulting in severe injury or death.
Additionally, grounding to gas pipes could cause a gas leak and potential explosion causing severe injury or death.
•
Do not use tapped wires, extension cords, or starburst connections, as they may cause overheating, electric shock, or fire.
• Do not use locally purchased electrical parts inside the product. (Do not branch the power for the drain pump, etc., from the
terminal block.) Doing so may cause electric shock or fire.
• The circuit must be protected with safety devices in accordance with local and national codes, i.e. a circuit breaker.
•
Use an all-pole disconnection type circuit breaker with at least 1/8 inch (3mm) between the contact point gaps.
• When carrying out wiring, take care not to pull at the conduit.
•
Do not connect the power wire to the indoor unit. Doing so may cause electric shock or fire.
• Do not turn on the circuit breaker until all work is completed.
CAUTION
Precautions to be taken for power supply wiring
Recommend stranded cable for interunit wiring. Local code always supersedes recommendation.
•
For stranded wires, make sure to use the round crimp-style terminal for
connection to the power supply terminal block. Place the round crimp-
style terminals on the wires up to the covered part and secure in place.
Round crimp-style
terminal
Stranded wire
Screw
Flat washer
Screw
Screw
Flat washer
Flat washer
Good
Wrong
A
Round
crimp-style
terminal
Round crimp-style
terminal
Round crimp-style
terminal
Arrow view
A
•
If solid core wire must be used, be sure to curl the end of the lead. Improper work may cause heat and fire.
Good
Good
Stripping wire at terminal block
Wrong
Wrong
Strip wire end
to this point.
Excessive strip length
may cause electric shock
or current leakage.
1) Strip the insulation from the wire (3/4 inch (20mm)).
2) Connect the inter-unit wires between the indoor and outdoor units so that the terminal numbers match. Tighten the
terminal screws securely. It is recommended that a slot-head screwdriver be used to tighten the screws.
1
2
3
1 2 3
L
1
L
2
Recommend using AWG12, stranded and insulated
wire for connections between indoor and outdoor units.
Local code always supersedes recommendation.
Firmly fix the wires with
the terminal screws.
Indoor
unit
Outdoor
unit
Ground
Firmly fix the wires with
the terminal screws.
Power supply
60Hz 208-230V
20A
Follow local codes
for wiring and safety
devices between
outdoor unit and power
source.
NOTE
Take care to ensure that all wiring between indoor unit and outdoor unit has a consistent connection. Any splices can cause
communication errors.
01_EN_3P686865-1.indd 9
2022/04/20 9:18:29
