Table of Contents
Advertisement
Selecting refrigerant pipe
Temper grade and minimum thickness of the refrigerant pipe
Outer diameter [mm (inch)]
Ø6 . 3 5 (1/4)
Ø9 . 5 2 (3/8)
Ø12 . 7 0 (1/2)
Ø15 . 8 8 (5/8)
Ø19 . 0 5 (3/4)
Ø22 . 2 3 (7/8)
X Make sure to use C1220T-1/2H (Semi-hard) or C1220T-H pipe for more than Ø19 . 0 5mm (3/4 inch) .
X
X In case of using C1220T-O (Soft) pipe for Ø19 . 0 5mm (3/4 inch), pipe may be broken, which can result in an injury .
X
Pipe installation between an outdoor unit and the first Y-joint
Outdoor unit capacity
[HP(Ton)]
4(3)
5(4)
6(5)
X Install the refrigerant pipe according to main pipe size of each outdoor unit capacity .
X
X When the pipe length between an outdoor unit and the farthest indoor unit including elbow exceeds 90m (295ft), the
X
gas pipe size should be upgraded one step among the main pipes from the outdoor unit to the first Y-joint . (The liquid
pipe size will be maintained . )
X If the capacity of the outdoor unit can decline due to the pipe length, upgrade the pipe size one step (gas pipe) .
X
Main pipe size up
Pipe installation between Y-joints
Indoor unit total capacity
[kW (Btu/h)]
X ≤ 15.0 (51000)
15.0 (51000) < X ≤ 23.2 (79000)
AM0@@FXMDCH_IM_EN_03408A(1).indd 13
Minimum thickness [mm (inch)]
0 . 7 (0 . 0 28)
0 . 7 (0 . 0 28)
0 . 8 (0 . 0 31)
1 . 0 (0 . 0 39)
0 . 9 (0 . 0 35)
0 . 9 (0 . 0 35)
Liquid pipe [mm (inch)]
Ø9 . 5 2 (3/8)
Ø9 . 5 2 (3/8)
Ø9 . 5 2 (3/8)
First Y-joint
Liquid pipe [mm (inch)]
Ø9 . 5 2 (3/8)
Temper grade
One step upgraded pipe
Gas pipe [mm (inch)]
Ø15 . 8 8 (5/8)
Ø15 . 8 8 (5/8)
Ø19 . 0 5 (3/4)
Pipe diameter (O•D•mm)
Gas pipe [mm (inch)]
Ø15 . 8 8 (5/8)
Ø19 . 0 5 (3/4)
Annealed
Drawn
[mm (inch)]
Ø19 . 0 5 (3/4)
Ø19 . 0 5 (3/4)
Ø22 . 2 3 (7/8)
13
2013-03-04 오후 4:28:16
Hide quick links:
Advertisement
Table of Contents
