22
P5417054
Table 8.1 Recommended Wiring Capacity and Sizes
Follow local electrical codes when selecting a GFCI device.
Model
Power
Supply
Minimum Wire Thickness
[AWG (mm
2
)]
GFCI
Main Switch
MCA
(Minimum
Circuit
Ampacity)
Power
Supply
Wiring Size
(Main)
Ground
Wiring
Size
Communication
Cable Size
Nominal
Current
Nominal
Sensitive
Current
Nominal
Current Fuse
[A]
[mA]
[A]
[A]
[A]
(H,Y,C)IC4008B21S
1~,
208/230V
60Hz
18
(0.82)
18
(0.82)
18
(0.82)
15
30
15
15
0.3
(H,Y,C)IC4012B21S
0.4
(H,Y,C)IC4015B21S
0.5
(H,Y,C)IC4018B21S
0.9
(H,Y,C)IC4024B21S
0.9
(H,Y,C)IC4030B21S
1.1
(H,Y,C)IC4036B21S
1.2
(H,Y,C)IC4048B21S
1.2
NOTES:
1.
Follow local codes and regulations when selecting field wires.
2. Select the GFCI with activation speed of 0.1 sec. or less.
3. Total operating current is less than 12A.
●
Check for the recommended size GFCI shown in the table 8.1.
●
Between indoor and outdoor units, use dual-conductor, AWG18 (0.82mm
2
) stranded copper cable
for communication cable. Do not use any cable with more than two conductors. Twisted pair or
shielded cable can be used in environments with excessive electrical noise to reduce the possibility of
communication errors between system components. Total cable length should not exceed 3281 ft (1000m).
● Select the wiring size, GFCI in accordance with the regulations for each region, the "Installation and
Maintenance Manual", and the dedicated electrical circuit that must be used.
●
Outside of the indoor unit, installation of the power supply wiring, communication cable, and wired
controller cable should be spaced as far apart as possible.
Heat Pump System
Heat Recovery System
8.2.2 Details of Electrical Wiring Connection
The electrical wiring capacity of the outdoor unit should be referred according to the "Installation and
Maintenance Manual" for the outdoor unit. Adjusting the DIP switches may be required depending on the
arrangement with the outdoor unit.
Select wiring capacity according to the table 8.1. Install a Ground Fault Circuit Interrupter (GFCI) and
main switch as shown in each of the system diagrams below.
NOTICE
Outdoor
Unit
Indoor
Unit
Switchbox
Outdoor Unit
Power Supply
Indoor Unit
Power Supply
Indoor
Unit
Indoor
Unit
GFCI
Main
Switch
GFCI
Main
Switch
Refer to the “Installation and Maintenance Manual”
for the connected outdoor unit for details of wire,
GFCI and main switch for outdoor unit.
Outdoor Unit
Power Supply
Outdoor
Unit
Change-Over
Box
Indoor Unit
Power Supply
Indoor
Unit
Switchbox
Indoor
Unit
Indoor
Unit
GFCI
Main
Switch
GFCI
Main
Switch
Refer to the “Installation and Maintenance Manual”
for the connected outdoor unit for details of wire,
GFCI and main switch for outdoor unit.
