Selecting Refrigerant Pipe - Samsung DVM S Series Installation Manual

Refrigerant pipe installation

Selecting refrigerant pipe

Increase the main
pipe size
Install the refrigerant pipe according to main pipe size of each outdoor unit capacity.
When the pipe length (including elbow) between an outdoor unit and the farthest indoor unit exceeds 90m, you must
increase the size of the pipe (main pipe) by one grade which connects between the outdoor unit to the first branch joint.
For H/R model, When the pipe length (including elbow) between an outdoor unit and the farthest indoor unit exceeds
90m, you must increase the size of the liquid pipe by one grade among the pipes(main pipe) which connects between
the outdoor unit to the first branch joint.
32
First branch joint