Connecting Method - Midea M-thermal Split MHA-V4W/D2N8 Installation And Owner's Manual

7.4 Connecting method

Outdoor Unit
H
max. difference in height
The largest level difference between indoor unit and outdoor unit should not exceed 20m (if the outdoor unit is
above) or 15m (if the outdoor unit is below). Additionally: (i) If the outdoor unit is above and the level difference is
greater than 20m, it is recommended that an oil return bend with dimensions as specified in Figure 7-4 is set every
5m in the gas pipe of the main pipe; and (ii) if the outdoor unit is below and the level difference is more than 15m,
the liquid pipe of the main pipe should be increased one size.
1) Size of pipes of Gas side and Liquid side
MODEL
4/6kW
8/10kW
2) Connection method
Gas side
4~10kW
Flaring
outdoor unit
Flaring
Indoor unit
≥300mm
Figure 7-5
CAUTION
Refrigerant
R32
R32
Liquid side
Flaring
Flaring
13
≥300mm
Figure 7-4
Indoor Unit
Gas side/Liquid side
Φ15.9/Φ6.35
Φ15.9/Φ9.52