VRF Air-Conditioner IOM
6
Control signal wire must use 2-core shielded
cable to prevent weak-current signal interference.
Signal wire and power supply cable must be
arranged in parallel and keep a distance above
300mm against interference.
All the wires and parts shall be tested.
Each equipment (indoor unit and outdoor unit)
shall be installed with breaker and leakage
protector.
The connecting line must be firm; the wire or
other parts shall be covered with hood against
looseness. Looseness may cause overheating,
short circuit or fire hazard.
Figure
13
13.2.
Power line connection
The power supply connection for indoor unit is detailed in electric schematic diagram on electric control box.
Recommended specification and model for power supply is RVV2x2.5+1x1.5.
13.3.
Communication wire connection
Figure 14
The recommended model for communication wire is RVSP2X0.75 shield (2-core).
Connect according to the diagram, do not allow A and B polarity connection error, if not, communication
failure or controller damage may be caused.
In order to avoid control signal interference, the signal wire shall use shielding wire, and the shielding layer
shall be earthed.
The signal wire exceeding the specific length may cause air conditioner out of service due to communication
problem: signal wire length ≤500m and total length ≤1000m. There shall be 16 signal wire branches at most.
13.4.
Type setting
Type setting is detailed in the electric schematic diagram on the electric control box.
