Size Of The Pipe Between Branch Joints; Size Of The Pipe Between The Branch Joint And The Indoor Unit - Samsung DVM S Series Installation Manual

Refrigerant pipe installation
Size of the pipe between branch joints (B)
Select the pipe size according to the sum of indoor unit capacity which will be connected after the branch.
❇ However, if the size of the pipe between branch joints (B) is bigger than the size of the pipe connected to the outdoor
unit (A), apply the pipe size (A).
Indoor unit capacity (kW)
15.0 kW and below
15.1 kW ~ 22.4 kW
22.5 kW ~ 28.1 kW
28.2 kW ~ 40.0 kW
40.1 kW ~ 45.0 kW
45.1 kW ~ 63.3 kW
63.4 kW ~ 70.3 kW
70.4 kW ~ 98.4 kW
98.5 kW ~ 135.2 kW
135.3 kW ~ 169.0 kW
Over 169.0 kW
Note1) If Ø 25.40 pipe is not available on site, use Ø 28.58 pipe.
Note2) If Ø 31.75 pipe is not available on site, use Ø 34.92 pipe.
Note3) If Ø 38.10 pipe is not available on site, use Ø 41.28 pipe

Size of the pipe between the branch joint and the indoor unit

Make a selection according to outdoor unit capacity.
Indoor unit capacity (kW)
6.0 kW and below
6.1 kW ~ 16.0 kW
16.1 kW ~ 23.0 kW
Over 23.0 kW
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Branch pipe length within 45m
Liquid pipe (mm) Gas pipe (mm)
Ø 9.52
Ø 12.70
Ø 15.88
Ø 19.05
Ø 22.22
Liquid pipe
Ø 6.35
Ø 9.52
Ø 9.52
Ø 9.52
Branch pipe length between 45~90m
Liquid pipe (mm)
Ø 15.88
Ø 19.05 Ø 12.70
Ø 22.22
Ø 15.88
Ø 28.58
Ø 19.05
Ø 34.92
Ø 22.22
Ø 41.28
Ø 53.98 Ø 25.40
Pipe size (O.D. mm)
Gas pipe (mm)
Ø 19.05
Ø 22.22
Ø 25.40 note1)
Ø 28.58
note2)
Ø 31.75
note3)
Ø 38.10
Ø 41.28
Ø 53.98
note1)
Gas pipe
Ø 12.70
Ø 15.88
Ø 19.05
Ø 22.22