Haier AB072MRERA Service Manual page 322

Items
Cross
Total section
current of (mm
indoor units (A)
<10
≥10 and <15 3.5
≥15 and <22 5.5
≥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
Length current of
(m) overflow
2
)
breaker (A)
2 20 20
25 30
30 40
40 50
0.75mm
Rated current of residual circuit
breaker (A)
Ground fault interrupter (mA)
Response time (S)
20 A, 30 mA, 0.1S or below
30 A, 30 mA, 0.1S or below
40 A, 30 mA, 0.1S or below
50 A, 30 mA, 0.1S or below
Wiring dimensions
2
×3 core shielded line
314
Cross sectional
area of signal line
Indoor
Outdoor
-indoor
2
-indoor (mm )
2
(mm )
2 cores×(0.75-2.0)
2
mm shielded line