Haier AB072MRERA - Page 240

232
Indoor power supply wiring & signal wiring between indoor and outdoor & signal wiring between indoors.
• 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.
Items
Total
Current of
Indoor Units(A)
Cross
Section
(mm
2
)
Length
(m)
Rated
Current of
Overow
Breaker(A)
Rated current of residual
Circuit Breaker(A)
Ground Fault Interruptor(mA)
Response time(S)
Cross Sectional
Area of Signal Line
Outdoor
-indoor
(mm
2
)
Indoor
-indoor
(mm
2
)
<7 2.5 20 10 10 A,30 mA,0.1S or below
≥7 and <11 4 20 16 16 A,30 mA,0.1S or below
2 cores×(0.75-2.0)
mm
2
shielded line
≥11and <16 6 25 20 20 A,30 mA,0.1S or below
≥16 and <22 8 30 32 32 A,30 mA,0.1S or below
≥22 and <27 10 40 32 32 A,30 mA,0.1S or below
Signal wiring of wired controller
Length of signal line (m) Wiring dimensions
≤ 250 0.75mm
2
×3 core shielded line
※
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.