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9.
ELECTRIC WIRING WORK
9-1 GENERAL INSTRUCTIONS
• Shut off the power before doing any work.
• All field supplied parts and materials, electric works must
conform to local codes.
• Use copper wire only.
• See also the "Wiring Diagram plate" attached to the control
box lid when laying electrical wiring.
• For details on hooking up the remote controller, refer to the
"REMOTE CONTROLLER INSTALLATION MANUAL".
• 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 circuit breaker 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 circuit breaker and switch, and wiring
instructions.
• Be sure to ground the air conditioner.
• The earth wire should not come in contact with gas pipes,
water pipes, lightning rods, or telephone earth wires.
• Gas pipes: gas leaks can cause explosions and fire.
• Water pipes: they cannot be grounded if hard vinyl pipes
are used.
• Telephone earth wire and lightning rods: the ground
potential when struck by lightning gets extremely high.
• To avoid short circuiting the power supply wire, be sure to
use insulated terminals.
• Do not turn on the power supply (circuit breaker or earth leak-
age breaker) until all other work is done.
9-2 SPECIFICATIONS FOR FIELD SUPPLIED FUSES
AND WIRE
Power-related
Power supply wiring (including earth wire)
Model
Number
of units
15 · 20 · 25 · 32 type
40 · 50 type
1
63 type
Model
15 · 20 · 25 · 32 type
Sheathed vinyl cord
40 · 50 type
or cable (2 wires) (NOTE 2)
63 type
NOTES
1. Shows only in case of protected pipes. Use H07RN-F in
case of no protection.
2. Insulated thickness : 1mm or more.
3. If the wiring is in a place where people can easily touch it,
install an earth leakage breaker to prevent electric shock.
4. When using an earth leakage breaker, make sure to select
one useful also for protection against overcurrent and short-
circuit.
When using an earth leakage breaker only to earth the
device, make sure to install a wiring interrupter as well.
English
Field
fuses
Wire
Size
Size must
H05VV-U3G
16 A
comply with
(NOTE 1)
local codes.
Transmission wiring
Remote controller wiring
Wire
Size (mm
0.75 - 1.25
• The length of the transmission wiring and remote controller
wiring are as follows.
Length of the transmission wiring and remote controller wiring
Outdoor unit – Indoor unit
Indoor unit – Remote controller
9-3 ELECTRICAL CHARACTERISTICS
Units
Model
Hz Volts
15 · 20 · 25 · 32
40
50
50
63
15 · 20 · 25 · 32
40
60
50
63
MCA: Minimum Circuit Amps (A) MFA:Max. Fuse Amps (A)
KW: Fan motor output (kW)
2
)
Max. 1000m
(Total wiring length: 2000m)
Max. 500m
Power supply
Voltage
MCA
MFA
range
0.4
Min.
0.5
220-
198
16
240
Max.
0.5
264
0.6
0.4
Min.
0.5
198
220
16
Max.
0.5
242
0.6
FLA:Full Load Amps (A)
Fan motor
KW
FLA
0.036
0.3
0.038
0.4
0.038
0.4
0.060
0.5
0.036
0.3
0.038
0.4
0.038
0.4
0.060
0.5
9
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