GREE Air-ccoled Closed Control Unit Service Manual
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7.1.3 Wiring Requirements
◆ Layout of Electric Wires
(1) The layout should comply with related national regulations for wiring.
(2) Rated voltage and dedicated power supply of the unit are required to apply.
(3) Communication cable shall be shielded twisted pair line.
(4) Power cord or communication cable shall be fixed to avoid the stress on supply
terminals. Do not drag or pull the cable with force.
(5) The diameter of power cord shall comply with requirements of this manual.
Dedicated cables must replace the damaged power cord and communication cable in time.
(6) All electrical installations have to be conducted by professional personnel in
accordance with the local law, regulations and this manual.
(7) Grounding should be reliable and performed by professionals on construction’s
specialized grounding device.
(8) Air switch and leakage switch for the whole system have to be installed.The air
switch should have the function of stopping the system from short circuit and overload.
(9) Refer to the wiring diagram which pasted on the unit as guidance for wiring.
◆Requirements of Connecting Electric Appliances
(1) All operations for wiring must strictly comply with the wiring diagram of the unit.
(2) Power supply of the unit must be equipped with air switch for general power supply
by customers and conductor cross-section is selected according to the requirements on
electrical wiring diagram of the unit.
(3) Range of power supply voltage of the unit with three-phase source is 360
～400V
and unbalancedness degree of three-phase system cannot exceed 3%.
(4) The unit applied three-phase source has equipped with reverse phase protection
device. If phases are reversely connected, it cannot work.
(5) Please connect wire strictly according to the wiring diagram.
Caution: the unit requires the reliable protective earthing. (There is earthing
symbol in the electric cabinet of the unit ）
◆
Earthing Requirements
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