DC Inverter Multi VRF System
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(10) Grounding Requirements.
1) Air conditioner belongs to class I electrical appliance, so it must be securely grounded.
2) The yellow-green wire inside the unit is a ground wire. Do not cut it off or secure it with
tapping screws, otherwise it will lead to electric shock.
3) Power supply must include secure grounding terminal. Do not connect the ground wire
to the following:
①
Water pipe;
②
Gas pipe;
③
Drain pipe;
④
Other places that are deemed as not secure by professional technicians.
4.6.2 Wiring Diagram
(1) Connection of power cord and communication wire Separate power supply for IDU and
ODU.
1) Single-phase power supply unit.(GMV-80WL/A-T, GMV-100WL/A-T, GMV-121WL/A-T,
GMV-80WL/C-T, GMV-100WL/C-T, GMV-121WL/C-T, GMV-141WL/C-T,
GMV-120WL/C-T, GMV-140WL/C-T, GMV-160WL/C-T).
Fig.26 Connection of power cord and communication wire for IDU and ODU
2) Three-phase power supply unit. (GMV-120WL/C-X, GMV-140WL/C-X,
GMV-160WL/C-X).
Fig.27 Connection of power cord and communication wire for IDU and ODU
