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Selecting refrigerant pipe
Y-joint
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 the outdoor unit and the farthest indoor unit exceeds 90 m (295.28 ft),
the size of the pipe (main pipe) connecting the outdoor unit to the first branch joint must be increased by 1 grade.
For HR System, when the pipe length (including elbow) between an outdoor unit and the farthest indoor unit exceeds
90 m (295.28 ft), you must increase the size of the liquid pipe by 1 grade among the pipes(main pipe) which connects
between the outdoor unit to the first branch joint
ENGLISH-23
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