Refrigerant Piping Connection
!!
WARNING
All field piping must be completed by certified technicians and must comply with local
and national regulations.
When installing the refrigeration system, ensure that air, dust, moisture or foreign
substances do not enter the refrigerant circuit. Contamination in the system may cause
poor operating capacity,high pressure in the refrigeration cycle, explosion or injury.
When the air conditioner is installed in a small room, measures must be taken to
prevent the refrigerant concentration in the room from exceeding the safety limit
when the refrigerant leaks. If the refrigerant leaks and the concentration exceeds
its appropriate limit, it may cause a risk of hypoxia.
SAFETY PRECAUTION
If refrigerant leaks during installation, ventilate the area immediately. The leaked
refrigerant gas is toxic and flammable. After completing the installation work, make
sure that there are no refrigerant leaks.
The welding port of the connecting pipe of the internal and external machine must be
located on the outdoor side.
Outdoor pipe dimension and ways of install (in sequence of cooling capacity
Allowed value
Longest pipe (L)
65/213
30/98.4
Height drop between indoor
and outdoor unit H
Maximum
height drop
Conventional pipe, cooling capacity 36KBtu/h
Allowed value
Longest pipe(L)
50/164
25/82
Height drop between indoor
and outdoor unit
Maximum
height drop
Conventional pipe, cooling capacity 24K- 36KBtu/h
The maximum length and drop height based on models. (Unit: m/ft.)
Height Drop between indoor and outdoor unitH
Outdoor Unit
Indoor Unit
Longest PipeL
Oil Return
NOTE:
Ensure that the length of the refrigerant pipe, the number of bends, and
the drop height between the indoor and outdoor units meets the requirements
Pipe dimension and ways of installation
Allowed value
Longest pipe(L)
30/98.4
20/65.6
Height drop between indoor
and outdoor unit
Maximum
height drop
Conventional pipe, cooling capacity 24KBtu/h
Copper Pipe for Air Conditioner
Pipe Material
Size(mm)
Gas side
Liquid side
Model
18k-24k
30k-42k
48k-60k
f
6.35(1/4inch)
f
12.7(1/2inch)
f
15.8(5/8inch)
f
9.52(3/8inch)
f
15.8(5/8inch)
f
9.52(3/8inch)
