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Connection of Indoor and Outdoor Unit
Torque Sheet for Tightening Nuts
Pipe Diameter
（mm）
Wall Thickness
（mm）
Tightening Torque
(N·m)
Ø6.35 ≥0.5 15-30
Ø 9.52 ≥0.71 30-40
Ø 12.7 ≥1 45-50
Ø 15.9 ≥1 60-65
Ø 19.05 ≥1 70-75
Caution:
1. When connecting indoor unit and pipe, never pull the big and small joint of indoor unit with force, so as to
prevent the capillary tube or other tubes of indoor unit from cracking and causing leakage.
2．Connecting pipe shall be supported by a rack without transmitting its weight to other units.
● Connection of Branch pipe
Y☆ -Type Branch pipe
到其它分支管
或到室内机
现场用管
室外机
现场用管
出口2
进口
出口1
Y型分歧管
Pipe for Site Use
Outdoor Unit
Y-Ty pe branch Pipe
Outlet 1
Inlet
Outlet 2
Pipe for Site Use
To other branch
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