In 4 zones with 3 units of 7,000 BTU unit and a 18,000 BTU unit, only ARU18RLF and AUU18RLF can be used. Wall mounted ASU18RLF cannot be connected in this combination. See Design & Technical Manual for capacities.
If AOU36RLXFZ is paired with two 18,000 BTU indoor units, you have to purchase optional kit Part #K9FZ1818. Capacity based on non-ducted models. For ducted or mixed refer to capacity table in Design & Technical Manual.
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