Electrical Connections-Supply Voltage - Gree GK-H03NH3AS Owner's Manual

Rooftop Packaged
⑩. The null line of power input must be connected to the "N" section of the
terminal board! A wrong connection will cause the damage of unit!

5.3 Electrical Connections-Supply Voltage

(1) Air-conditioning unit with single-phase power supply.
1) Remove the Electric Box Cover of the unit.
2) Pass the cable though rubber ring.
3) Connect the power supply cable to the terminals and the grounding
screw.
4) Use cable fastener to bundle and fix the cable.
(2) Air-conditioning unit with 3-phase power supply.
1) Remove the Electric Box Cover of the unit.
2) Pass the cable though rubber ring.
3) Connect the power supply cable to terminals and the grounding screw
according to wiring diagram.
4) Use cable fastener to bundle and fix the cable.
(3) Low Voltage Connections.
Low voltage wiring is to be copper conductors. The wire size of the
communication line should be no less than 0.75mm
1) Remove the Electric Box Cover of the unit.
2) Pass the signal cable of the wire controller though rubber ring.
3) Connect the signal cable to terminals according to wiring diagram.
4) Use cable fastener to bundle and fix the cable.
NOTICE!
Take great care when carrying out the following connections, so as to avoid
malfunction of the air-conditioning unit because of electromagnetic
interference.
①. The signal line of the wire controller must be separated from the power
line.
②. In case the unit is installed in a place vulnerable by electromagnetic
interference, it is better to use shielded cable or double-twisted cable as
the signal line of the wire controller.
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