DC INVERTER MULTI VRF INSTALLATION
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9 ELECTRICAL INSTALLATION
9.1 Precautions for Electrical Installation
☆ Carry out installation according to national cabling rules.
☆ Rated supply voltage and special circuit for air conditioner must be used.
☆ Do not pull the power cables with force.
☆ All the electric installations must be carried out by specialist technicians in accordance with the
local laws, rules and these instructions.
☆ The diameter of power cords must be large enough. The damaged power cords and connection
wires must be replaced with special cords.
The earthing shall be secure. The earthing wire shall be connected to the special earthing device
on the construction. The installation must be done by specialist technicians. The air switch shall
have both the magnetic tripping and thermal tripping functions to ensure protection against the
short circuit and overload.
●Earthing Requirements
☆ The air conditioner belongs to Category I Electric Appliance. Therefore, be sure to take reliable
earthing measures.
☆The yellow-green wire inside the air conditioner is used for earthing. Do not use it for other
purposes or cut it. Do not fix with tapping screw. Otherwise, it will cause the risk of electric shock.
☆The earthing resistance shall comply with the national standard GB17790
☆Reliable earthing terminal must be provided on the user’s power supply. Never connect the
earthing wire to the following places:
①Water pipe; ②Gas pipe; ③Sewage pipe;
④Other places that the specialist technicians think unreliable.
9.2 Specifications of power cord & circuit breaker
Model
Power supply
(V,Ph,Hz)
Capability of
circuit breaker
(A)
Min. sectional
area of earth
lead
(mm
2
)
Min. sectional
area of power
cord
(mm
2
)
GMV(L)-Pd100W/NaB-K 220~240V 50 Hz 32 6.0 6.0
GMV(L)-Pd120W/NaB-K 220~240V 50 Hz 32 6.0 6.0
GMV(L)-Pd140W/NaB-K 220~240V 50 Hz 40 10.0 10.0
GMV(L)-Pd160W/NaB-K 220~240V 50 Hz 40 10.0 10.0
Note：The specification of power cord mentioned hereby is defined as the required specification
when wiring with BV single core cable (2 ~ 4 pieces) under the cover of PVC pipe, and ambient
temperature shall be at 40 ; Air switch shall be selected according to 40 temperature condition, ℃℃
and shall in “D” type. if the installation condition on site changed, please consider the modification
on the required specification of Power cord and Air switch, according to the specification manual
provided by manufacture.
9.3 Wiring Sketch Map
9.3.1 Connection of power cord and communication line
The indoor unit and outdoor unit shall be powered separately.
Connection Schematics for Indoor / Outdoor Power Cords and Communication Line (3-phase)
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