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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
1.0 1.5
7.3 Pipe length and the elevation
Capacity
Btu/h
Pipe size
Standard
length
(m)
Max.
Elevation
B (m)
Max.
Elevation
A (m)
Additional
refrigerant
(g/m)
Gas
Liquid
9k~12K
3/8’’ (Ф9.52) 1/4’’ (Ф6.35) 5 8 20 30
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
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