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Installation
8.3.9 ELECTRICAL WIRING
8.3.9.1
GENERAL CHECK
Make sure that the following conditions related to power
- Ensure that the power supply voltage is within ±10%
of the rated voltage and the earth wire is connected.
- Check cable capacity.
- The impedance of the power supply line is low
enough to avoid any voltage drop of more than 15%
of the rated voltage.
Do not adjust any wiring or connections unless the main
power switch is OFF.
Check that the earth wire is securely connected, tagged
and locked in accordance with national and local codes.
When using more than one power source, check and
ensure that all of them are turned OFF before operating
the unit.
Avoid wiring installation in contact with the refrigerant
pipes, water pipes, edges of plates and electrical
components inside the unit to prevent damage, which may
cause electric shock or short circuit.
Check to ensure that screws for terminal board are tightly
tightened.
Check to ensure that the outdoor fan have stopped before
electrical wiring work or periodical check is performed.
Protect the wires, drain pipe, electrical parts, from rats or other
small animals. If not protected, rats may damage unprotected
Wrap the accessory packing around the wires, and plug the
wiring connection hole with the seal material to protect the
product from any condensed water and insects.
Tightly secure the wires with the cord clamp inside the unit.
when using conduit.
Contact your local authority in regards to standards, rules,
regulations, etc.
Check that the earth wire is securely connected.
outdoor unit and wait for more than 10 minutes before electrical
wiring work or a periodical check is performed.
Use a dedicated power circuit for the unit. Do not use a power
circuit shared with the outdoor unit or any other appliance.
Make sure that all wiring and protection devices are properly
terminals of the unit, specially the protection (earth) and power
wiring, taking into account the applicable national and local
may cause electrical shock.
Tape or sleeve
Keep a distance between each wiring terminal and attach
Check to ensure that the electrical resistance is more than
terminal of the electrical parts. If not, do not operate the system
until the electrical leakage is found and repaired.
8.3.9.2
COMMON WIRING
Use shielded twisted pair wire (more than 0.75 mm²)
for transmission wiring between outdoor unit and indoor
unit.
Use 2-core wire for the transmission cable (Do not use
wire with more than 3 cores).
Use shielded twisted pair cable for transmission wiring
to protect the units from noise obstacle at length of less
than 300 m and size complied with local code.
H-NET shielded twisted pair cable must be grounded in
the outdoor unit side.
Pay attention to the connection of the transmission wires.
Incorrect connection may cause the failure of printed circuit
board.
(mains power switches, circuit breakers, wires, connectors and
wire terminals) have been properly selected according to the
electrical data indicated in this chapter and they comply with
national and local codes. If it is necessary, contact with your
local authority in regards to standards, rules, regulations, etc.
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