Gree GMV-Pdhm280W/Na-M - Page 35

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Connection of Indoor and Outdoor Unit
Gas pipe Liquid pipe
Capacity code range of
indoor unit (C)
mm(inch) mm(inch)
C≤28
Φ9.52(3/8) Φ6.35(1/4)
28＜C≤50
Φ12.7(1/2) Φ6.35(1/4)
50＜C≤140
Φ15.9(5/8) Φ9.52(3/8)
Note:
A. If the distance between indoor unit and nearest branch pipe is more than 10meter,then the cooper pipe
should be one grade bigger.
B.
For indoor unit with rated capacity less than 5.0kW, if the length from branch piping to indoor unit is longer
than or equal to 10m, a bigger pipe shall be used as liquid pipe from the branch piping to indoor unit.
7) .The oil balance pipe installation between basic models.
When the outdoor unit is combined with two or more basic modules the oil balance pipe should be installed
between basic models. It is connected with Φ12.7mm copper pipe,anΦ13.0mm oil balancing connection
three-way valve is needed when there are more than two units combined together.
8）. Outdoor unit piping sequence diagram
A.GMV-Pdhm224W/Na-M、GMV-Pdhm280W/Na-M
B.GMV-Pdhm335W/Na-M、GMV-Pdhm400W/Na-M、GMV-Pdhm450W/Na-M