What is the maximum distance allowed between indoor and outdoor units?
The maximum distance between the indoor and outdoor units is 82 ft / 25 m. The standard pipe length is 16.4 ft / 5 m, and the maximum elevation difference is 49 ft / 15 m. If you exceed these distances, additional refrigerant charge may be required.
From the official Della Mini Split Air Conditioner manual, page 11
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