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(A)+(B) (A) Power Supply Wiring Length (ft) (C) Control
Fuse or Circuit AWG
(B) Power Line Length (ft) Line Length (ft)
Model (#14) (#12) (#14)
Breaker Capacity
C1872, C2472, CL1872, CL2472
131 (Max.) 230 (Max.) 65 (Max.) 20A
3-7. Recommended Wire Length and Diameter
Regulations on wiring diameter differ from locality to locality. For field wiring
requirements, please refer to your local electrical codes. Carefully observe these
regulations when carrying out the installation.
Table 5 lists recommended wire lengths and diameters for power supply systems.
Refer to the wiring system diagram (Fig. 23) for the meaning of (A), (B), and (C) in
Table 5.
Refer to your local codes or in the absence of local codes see the National Elec-
tric Code: ANSI/NFPA70.
NOTE
Fig. 23
WIRING SYSTEM DIAGRAM
WARNING
● Be sure to comply with local codes on running the wire
from the indoor unit to the outdoor unit (size of wire and
wiring method, etc.).
● Each wire must be firmly connected.
● No wire should be allowed to touch refrigerant tubing, the
compressor, or any moving part.
Disconnect
switch
1
2
3
1
2
3
4
5
6
Grounding line
230/208V
230/208V
230/208V
INDOOR
UNIT
OUTDOOR
UNIT
Field supply
Grounding
line
L
1
L
2
Power supply
Single phase 230/208V 60HZ
Ter mi nal Terminal
(A)
(B)
(C)
(B)
CAUTION
● Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram.
The indoor unit draws its power from the outdoor unit.
● Do not run wiring for antenna, signal, or power lines of television, radio, stereo, telephone,
security system, or intercom any closer than 3'4" (1 m) from the power cable and wires
between the indoor and outdoor units. Electrical noise may affect the operation.
● To avoid the risk of electric shock, each air conditioner
unit must be grounded.
● For the installation of a grounding device, please
observe local electrical codes.
● Grounding is necessary, especially for units using
inverter circuits, in order to release charged electricity
and electrical noise caused by high tension.
Otherwise, electrical shock may occur.
● Place a dedicated ground more than 7' (2 m) away from
other grounds and do not have it shared with other elec-
tric appliances.
WARNING
# ... AWG (American Wire Gauge)
Table 5
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