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10. Installation
Selecting refrigerant pipe
• 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
(295ft), you must increase the size of the pipe (main pipe) by one grade which connects between the outdoor
unit to the first branch joint.
First branch joint
Increase the main
pipe size
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