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9.
ELECTRIC WIRING WORK
9-1
GENERAL INSTRUCTIONS
• All field supplied parts and materials and electric works must
conform to local codes.
• Use copper wire only.
• For electric wiring work, refer to also "Wiring diagram"
attached to the control box lid.
• For remote controller wiring details, refer to the installation
manual attached to the remote controller.
• All wiring must be performed by an authorized electrician.
• This system consists of multiple indoor units. Mark each
indoor unit as unit A, unit B..., and be sure the terminal board
wiring to the outdoor unit and BS unit are properly matched.
If wiring and piping between the outdoor unit and an indoor
unit are mismatched, the system may cause a malfunction.
• A ground fault circuit interrupter capable of shutting down
power supply to the entire system must be installed.
• Refer to the installation manual attached to the outdoor unit
for the size of power supply wiring connected to the outdoor
unit, the capacity of the ground fault circuit interrupter and
switch, and wiring instructions.
• Be sure to ground the air conditioner.
• Do not connect the ground wiring to gas and water pipes,
lightning rods, or telephone ground wires.
• Gas pipes : might cause explosions or fire if gas leaks.
• Water pipes : no grounding effect if hard vinyl piping is
used.
• Telephone ground wires or lightning rods : might cause
abnormally high electric potential in the ground during
lighting storms.
9-2
ELECTRICAL CHARACTERISTICS
Power supply
Model
Hz
Volts Voltage range MCA
FXMQ07PVJU
FXMQ09PVJU
FXMQ12PVJU
FXMQ18PVJU
208V
Max. 253V
60
/230V
Min. 187V
FXMQ24PVJU
FXMQ30PVJU
FXMQ36PVJU
FXMQ48PVJU
MCA: Min. Circuit Amps (A); MFA: Max. Fuse Amps (A)
kW: Fan Motor Rated Output (kW); FLA: Full Load Amps (A)
English
Fan motor
MFA
KW
FLA
0.6
15
0.090
0.5
0.6
15
0.090
0.5
0.6
15
0.090
0.5
1.6
15
0.350
1.3
1.8
15
0.350
1.4
2.3
15
0.350
1.8
2.9
15
0.350
2.3
3.4
15
0.350
2.7
9-3
SPECIFICATIONS FOR FIELD SUPPLIED
FUSES AND WIRE
Power supply wiring
Model
Field fuses
FXMQ07PVJU
FXMQ09PVJU
FXMQ12PVJU
Size must
FXMQ18PVJU
comply
15A
with local
FXMQ24PVJU
codes.
FXMQ30PVJU
FXMQ36PVJU
FXMQ48PVJU
Allowable length of transmission wirings and remote controller
wiring are as follows.
(1) Outdoor unit – Indoor unit:
Max. 3280 ft (Total wiring length: 6560 ft)
(2) Indoor unit – Remote controller:
Max. 1640 ft
NOTE
1. Shows only in case of protected pipes. Use H07RN-F in
case of no protection.
2. Vinyl cord with sheath or cable (Insulated thickness : 0.04
in. or more)
10. WIRING EXAMPLE AND HOW TO SET
THE REMOTE CONTROLLER
10-1 CONNECTING POWER SUPPLY, GROUND,
REMOTE CONTROLLER, AND TRANSMISSION
WIRING
(Remove the control box lid as shown below and connect each
wire.)
(1) Remove the control box lid.
Remote controller wiring
Transmission wiring
Size
Wire
Size
Sheathed
wire
AWG18-16
(2 wire)
Screw
(3 portions)
11
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