Hisense Hi-Therma Serie Manual De Instalación Y Mantenimiento página 28

ELECTRICAL WIRING
9 ELECTRICAL WIRING
9.1 GENERAL CHECK
•
Make sure that the following conditions related to power
supply installation are satisfied.
Ensure that the power supply voltage is within ±10% of
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the rated voltage and the earth wire is connected.
Check cable capacity.
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The impedance of the power supply line is low enough
-
to avoid any voltage drop of more than 15% of the rated
voltage.
!
D A N G E R
• 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.
!
C A U T I O N
• 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 parts, and at
the worst, a fire will occur.
• 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.
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.
• Tightly secure the wires with the cord clamp inside the unit.
• Lead the wires through the knockout hole to the wiring cover when
using conduit.
• Electrical wiring must comply with national and local codes. Contact
your local authority in regards to standards, rules, regulations, etc.
• Check that the earth wire is securely connected.
• Connect a fuse of specified capacity.
• Turn OFF the main power switch to the indoor unit and the
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
selected, connected, identified and fixe to the corresponding
terminals of the unit, specially the protection (earth) and power
wiring, taking into account the applicable national and local
regulations. Establish proper earthing; Incomplete earthing may
cause electrical shock.
Keep a distance between each wiring terminal and attach
•
insulation tape or sleeve as shown in the figure .
• Check to ensure that the electrical resistance is more than 1 MΩ,
by measuring the resistance between ground and the terminal of
the electrical parts. If not, do not operate the system until the
electrical leakage is found and repaired.
!
C A U T I O N
Pay attention to the connection of the transmission wires. Incorrect
•
connection may cause the failure of printed circuit board.
• Check to ensure that the field-supplied electrical components
(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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Tape or sleeve