Gree U-match Series Owner's Manual page 52

DC Inverter U-match Series Cassette Type Unit
Three-phase unit: GUD100W/NhA-X, GUD125W/NhA-X, GUD140W/NhA-X,
GUD160W/NhA-X.
Wire routing of separated power supply for three phase.
a)
Only for GUD160W/NhA-X.
The communication wire
gets in from the upper hole
The power cords of outdoor unit and
indoor unit get in from the lower hole.
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