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The wiring for the power line of indoor unit, the wiring between indoor and outdoor units as well as the wiring
between indoor units:
Items
Cross
Total
section
2
current of
(mm
)
indoor units (A)
<7
2.5
≥7 and <11
4
≥11 and <16
6
≥16 and <22
8
≥22 and <27
10
■ The electrical power line and signal lines must be fastened tightly.
■ Every indoor unit must have the ground connection.
■ The power line should be enlarged if it exceeds the permissible length.
■ Shielded lays of all the indoor and outdoor units should be connected together, with the shielded lay at the side of
signal lines of outdoor units grounded at one point.
■ It is not permissible if the whole length of signal line exceeds 1000m.
Signal wiring of wired controller
Length of signal line (m)
≤ 250
※ The shielding lay of the signal line must be grounded at one end.
※ The total length of the signal line shall not be more than 250m.
Rated
Rated current of residual circuit
Length
current of
(m)
overflow
Ground fault Interrupter (mA)
breaker (A)
20
10
10 A, 30 mA, 0.1S or below
20
16
16 A, 30 mA, 0.1S or below
25
20
20 A, 30 mA, 0.1S or below
30
32
32 A, 30 mA, 0.1S or below
40
32
32 A, 30 mA, 0.1S or below
Wiring dimensions
2
0.75mm
×3 core shielded line
162
breaker (A)
Response time (S)
Cross sectional
area of signal Line
Outdoor
Indoor
2
-indoor (mm
)
-indoor (mm
2 cores×(0.75-2.0)
2
mm
shielded line
2
)
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