Midea V4 Plus

MCAC-VTSM-2016-04 R410A DC Inverter VRF V4 Plus W Series 50Hz
Installation 191
CAUTION:
1.Don’t mix up the different refrigerants or abuse the tools and measurements which directly contact with
refrigerants
2.Don’t adopt refrigerant gas for air vacuuming.
3. If vacuum level could not get to -0.1MPa, please check whether resulted by leakage and confirm the leakage
site. If no leakage, please operate the vacuum pump again 1 or 2 hrs.
Calculate the added refrigerant according to the diameter and the length of the liquid side pipe of the
main/indoor unit connection. The refrigerant is R410A.
Table.4-11
Pipe size on liquid side
Refrigerant to be Added per meter
Φ6.4
0.022kg
Φ9.5
0.057kg
Φ12.7
0.110kg
Φ15.9
0.170kg
Φ19.1
0.260kg
Φ22.2
0.360kg
Φ25.4
0.520kg
Φ28.6
0.680kg
4.11 The Installation key points of connective pipes between main units
1) Connect the pipes between main units, the pipes should place horizontally (Fig.5-7, Fig.5-8), it is not allow
the concave at junction site and set longer than 200mm bending pipes for saving oil.
2) All connective pipes between the main units are not allowed to over than the height of every outlets of the
pipes.
√ Correct Way
√ Correct Way