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Dc Inverter VRF plus Water Heater Solution Service Manual INSTALLATION
206
14 ELECTRICAL INSTALLATION
14.1 Precautions for Electrical Installation
Itemized Description of Cautions.
The electrical installation must be done by professional electricians.
The electrical installation must be done in accordance with applicable technical codes and
other rules.
WARNING! Please make sure to install earth leakage circuit breaker. Earth leakage
circuit breaker must be installed to prevent electric shock or fire.
CAUTIONS!
The air conditioner must be securely earthed. Incorrect earthing may
cause electric shock or fire.
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All the electric installations must be carried out by specialist technicians in accordance
with the local laws, rules and these instructions.
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The indoor unit and outdoor unit shall use different power supplies. The indoor units
under the same system must be powered by a unified power source. All the indoor units
can only be controlled by one master power switch. Rated supply voltage and special
circuit for air conditioner must be used.
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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. Never
connect the earth lead to the gas pipe, water pipe, lightening rod or telephone earth wire.
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To avoid electric shock or any accident due to mal-operation, the air switch and
shock-resistant earth leakage circuit breaker that can cut off the power supply of the
complete system must be installed. The air switch shall have both the magnetic tripping
and thermal tripping functions to ensure protection against the short circuit and overload.
Electric shock or fire might be caused if no installation of earth leakage circuit breaker. Do
not switch on the power before completion of the electrical work. Make sure to cut off the
power supply before repair.
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In no case should the capacitor be used to improve the power factor.
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Please use cable conduit for power cords.
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Do not lay the electronic control cables (remote control and signal line) outside the
machine with other cables; otherwise the machine might become malfunctioned or failed
due to electrical noise.
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The power cord must be always connected to the power cord terminal board, and fixed by
using the lock connector included with the machine. Meanwhile, prevent them from
contacting the fitting pipe. The diameter of power cords shall be large enough. See below
for the detailed specifications. The damaged power cords and connection lines must be
replaced with the designated cables. When connecting the cable, please confirm that all
the electrical components inside the electric box shall have no coupling or terminal
loosened. (Improper installation of electric box cover may lead to potential water leakage,
which will cause the unit abnormal or short circuit).
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Earth lead must be connected before connecting the power cord. An earth lead longer
than the power cord shall be provided.
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For site wiring, please refer to the circuit diagram attached on the machine body.