Selecting Refrigerant Pipe - Samsung DVM S ECO AM XMDG Series Installation Manual

Installation of Air-conditioner
AA

Selecting refrigerant pipe

f X
Install the refrigerant pipe according to main pipe size of each outdoor unit capacity.
f X
When the pipe length (including elbow) between an outdoor unit and the farthest indoor unit exceeds 90m, you
must increase the size of the gas pipe (main pipe) by one grade which connects between the outdoor unit to the first
branch joint. (The liquid pipe size will be maintained.)
f X
If the capacity of the outdoor unit can decline due to the pipe length, upgrade the pipe size one step (gas pipe).
Increase the main pipe size
Size of the between the outdoor unit and the first branch joint
Outdoor unit capacity [HP]
8
9
Selection of branch joint
Selection of the first branch joint
Outdoor unit capacity
[HP]
8
9
Size of the pipe between branch joints
Selecte the pipe size according to the sum of indoor unit capacity which will be connected after the branch.
Inddor unit capacity
[kW]
15.0 kW and below
Over 15.0 kW ~ 22.4 kW and below
Over 22.4 kW
18
First branch joint
Liquid pipe [mm]
Ø9.52
Ø9.52
Selection of the other branch joint according to the sum of indoor unit capacity which
will be connected after the branch
Model name Classification
MXJ-YA2512M
Y-joint
MXJ-YA2512M
Distribution
Header
Liquid pipe
[mm]
Ø9.52
Gas pipe [mm] Increased gas pipe [mm]
Ø19.05
Ø19.05
Indoor unit capacity
[kW]
15.0 kW and below
Over 15.0 kW ~ 40.0 kW and below
45.0 kW and Below (for 4 rooms)
70.3 kW and below (for 8 rooms)
Gas pipe
[mm]
Ø15.88
Ø19.05
Ø22.23
Ø22.23
Ø22.23
Model name
MXJ-YA1509M
MXJ-YA2512M
MXJ-HA2512M
MXJ-HA3115M