Instructions / Assembly

-8-
[Tubing Selection]
• Ensure that the level (height) difference of indoor and outdoor units and the length of
tubing meet the requirement In the Table 1.
• If the tubing is longer than 23ft, but shorter than 49ft, refrigerant should be
supplemented according to Table 1.
• If the installation position of the outdoor unit is higher than indoor unit and the tubing
is longer than 33ft, added an oil trap on the gas tubing for every 26ft. (Fig 3)
Fig 3
Table 1
Tubing Size (mm/inch)
Standard
tubing
length (ft)
Max tubing
length (ft)
Height
difference
(ft)
Additional
refrigerants
(g/.ft)
Liquid tube Gas tube
φ6(1/4”) φ9.52(3/8”) 16.4 29.5 16.4 39.4
φ6(1/4”)
φ12(1/2”)
16.4
39.4
23
39.4
φ6(1/4”)
φ15.88(5/8”)
16.4
49.2
26.3
39.4
φ9.52(3/8”)
φ15.88(5/8”)
16.4
49.2
26.3
49.2
φ9.52(3/8”)
φ19.05(3/4”)
16.4
65.6
32.8
49.2
The above dimensions are for reference only, the actual product shall prevail.
Outdoor Unit
Indoor Unit
Indoor Unit
Outdoor Unit
Height
difference
Oil trap