GB-5
9 POWER CABLING
8 CONNECTING THE CABLE TO THE OUTDOOR UNIT
• Use a solid or stranded wire.
Connecting cable: AWG14
Power supply cable: AWG10
• Use copper wire.
• Follow local electrical codes.
• Use a double insulated cable with 600 V insulation.
(1) Strip the copper wires.
(2) Remove the cable cover.
(3) Attach the conduit connector to conduit holder with the lock nut.
(4) Pass the cables through the conduit connector.
(5) Remove the cable holder and connect the cables.
(6) Fix the cable sheath with the cable holder and the screw.
(7) Double-check that the cable is securely in place.
(8) Attach the cable cover.
Cable cover
Caution:
• Be very careful not to confuse the terminal connections. Wrong
cabling may damage the internal control circuit.
• Be sure to connect the cable to match the markings on the outdoor
unit’s terminal board and those of the indoor unit.
• Be sure to put the cable leads deep into the terminal board and
tighten up the screws. Poor contact can cause overheating or fire,
or malfunction.
• Be sure to use a disconnect switch. Follow the local and state elec-
trical codes.
Power supply cable
Cable holder
Connecting cable
Earth wire
L2 L1 G
L1’ S L2’
0.2 inch
(5 mm)
Conduit holder
Conduit connector
Lock nut
• Fit a disconnect switch, having a contact separation of at
least 0.12 inch (3 mm) in all poles, to the electricity power
line.
Prepare a dedicated power supply circuit. For the connec-
tions, see below.
Supply power
208/230 V, single-phase
Guaranteed voltage
187-253 V
Max. Fuse
40 A
Min. Circuit Ampac-
ity
25 A
Connecting cable
Power supply cable
In case using solid wires
Stripping length: 0.7 inch (18 mm)
Be sure to make the wire hook-shaped.
In case using stranded wires
Stripping length: 0.3 inch (8 mm)
For power supply cable, securely clamp a round
terminal to each end of the stripped wire.
Copper wire
0.7 inch (18 mm)
Round terminal
Copper wire
0.3 inch (8 mm)
Earth wire
Earth wire
4.7 inch (120 mm)
2.0 inch (50 mm)
2.4 inch (60 mm)
2.0 inch (50 mm)
Outdoor unit
Indoor unit A
Power supply
208/230V 60Hz
Ground
Disconnect switch
L1’
L2’
S
L1’
L2’
S
G
L1 L2 G
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