Midea MSV1-09HRDN1-QC2A - Installation Details; 7.1 Wrench Torque Specifications; 7.2 Cable Connection Guidelines; 7.3 Pipe Length and Elevation Limits

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7. Installation details
7.1 Wrench torque sheet for installation
Outside diameter Torque
mm inch Kgf.m
Ф6.35 1/4 1.8
Ф9.52 3/8 4.2
Ф12.7 1/2 5.5
7.2 Connecting the cables
The power cord of connect should be selected according to the following specifications sheet.
Grade
Unit
9K 12K
mm
2
1.5 1.5
7.3 Pipe length and the elevation
Pipe size
Capacity
Btu/h
Gas Liquid
Standard
length
(m)
Max.
Elevation
B (m)
Max.
Length
A (m)
Additional
refrigerant
(g/m)
9k 3/8’’ (Ф9.52)
1/4’’ (Ф6.35)
5 8 20 30
12k 1/2’’ (Ф12.7)
1/4’’ (Ф6.35)
5 8 20 30
Caution:
Capacity is base on standard length and maximum allowance length is base of reliability.
Oil trap should be installed per 5-7 meters.
7.4 Air purging of the piping and indoor unit
Required tools:
Hexagonal wrench; adjustable wrench; torque wrenches, wrench to hold the joints and gas leak detector.
Note:
The air in the indoor unit and in the piping must be purged. If air remains in the refrigeration piping, it will affect the
compressor, reduce the cooling capacity, and could lead to a malfunction of unit.