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7.2 Field Minimum Wire Sizes for Power Source
Use an ELB (Earth Leakage Breaker). If it is not used, it will cause an electric shock or a fire.
•
Do not operate the system until all the check points have been cleared.
•
(a) Check to ensure that the electrical resistance is more than 1 megohm, by measuring the resistance
between ground and the terminal of the electrical parts. If the electrical resistance is less than 1
megohm, do not operate the system until the electrical leakage is found and repaired.
(b) Check to ensure that the stop valves of the outdoor unit are fully opened, and then start the system.
Electrical parameters and cable specification of indoor unit
Application Voltage(V)
Power
Model
Supply
Maximum Minimum
9K
12K
18K
208/230V/
24K
253
1Ph/60Hz
30K
36K
48K
MCA: Minimum Circuit Ampacity (A) MOP: Maximum Overcurrent Protection (A)
NOTES:
Follow the local codes and regulations when selecting field wires.
•
Power cord selection shall not be lighter than polychloroprene sheathed flexible cord (code designation
•
UL 62 and C22.2 No.49), and the power cord should be copper wire.
Use a shielded cable for the transmitting circuit and connect shielding layer to the ground.
•
In the case that power cables are connected in series, add maximum current to each unit and select
•
wires as follow table.
Current(A)
i ≤ 6
6 < i ≤ 10
10 < i ≤ 16
16 < i ≤ 25
*1 In the case that current exceeds 63A, do not connect cables in series.
7.3 Position of Electrical Wiring Connection
WARNING
!
Tightly secure wirings to the terminal block according to the specified torque. If tightening the terminals
•
is not completed, heat generation, an electric shock or a fire will occur at the terminal connection.
Make sure that the wires are securely fixed in order not to apply an external force to the terminal
•
connection of the wirings. If fixing is not completed, heat generation or a fire will occur.
Make sure that the terminals do not touch the surface of the electrical box. If the terminals are too
•
close to the surface, it may cause the activation of ELB, heat generation and a fire at the terminal
connection, and an electrical shock.
MCA(A) MOP(A)
1.36
15
1.54
15
1.75
15
187
2.05
15
2.39
15
3.14
15
3.44
15
2
Wire Size(AWG(mm
))
14(2.5)
14(2.5)
14(2.5)
12(4)
-15-
Power Cord
MAX
Max Power
Specifications
Current(A)
Input(kW)
(AWG(mm
1.09
0.163
1.23
0.193
1.56
0.220
1.83
0.262
2.12
0.310
2.78
0.417
3.05
0.462
Current(A)
25 < i ≤ 32
32 < i ≤ 40
40 < i ≤ 63
63 < i
7. Electrical Wiring
Transmission
Cable
Specification
))
2
2
(AWG(mm
))
14(2.5)
18(0.75)
2
Wire Size(AWG(mm
))
10(6)
6(10)
6(16)
*1
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