Haier MRV5 - Indoor Power and Communication Wiring Specs; Wired Controller Communication Cable Specs

23
Electric wiring and the application
Indoor power source and communication wiring
Item
Indoor
total
current (A)
Power
cable
section
(mm
2
)
Wire
length
(m)
Rated
current of
overcurrent
breaker
(A)
Rated current of residual
circuit breaker(A)
Ground fault
interruptor(mA)
response time(S)
Communication wire
section
Outdoor/
indoor
(mm
2
)
Indoor/
indoor
(mm
2
)
<10 2 20 20 20A, 30mA, below 0.1s
2-core × (0.75-2.0mm
2
)
shielded wire
≥10 and <15 3.5 25 30 30A, 30mA, below 0.1s
≥15 and <22 5.5 30 40 40A, 30mA, below 0.1s
≥22 and <27 10 40 50 50A, 30mA, below 0.1s
• Power cable and communication wire must be xed rmly.
• Each indoor must be grounded well.
• When power cable exceeds the range, increase the gauge appropriately.
• Shielded layer of communication wires must be connected together and be earthed at single
point.
• Communication wire total length cannot exceed 1000m.
Communication wire for wired controller
• 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.
Length of Signal Line (m) Wiring Dimensions
≤250 0.75mm
2
× 3 core shielding line