950-0289revB - 8 - July 22, 2022
Line set length
Locate the Indoor and Outdoor units as close together as possible. Line set height and length cannot exceed
specifications.
Installation Notes:
DUAL ZONE
– MZ18H424ZMO
1. The maximum total line set length must not exceed 131 feet for all units attached to the 18K condenser.
Refrigerant must be added (0.161 oz./ft.) when line set total length exceeds 49.2 ft.
2. Dual Zone model MZ18H424ZMO is designed to operate with 2 indoor units.
3. The Dual Zone maximum length is 82 ft. for one indoor unit.
TRIPLE ZONE
– MZ27H424ZMO / HMZ28H424ZMO
1. The maximum total line set length must not exceed 197 feet for all units using the 27K/28K condenser.
Refrigerant must be added (0.161 oz./ft.) when line set length exceeds 74 ft. total.
2. TRIPLE ZONE model MZ27H424ZMO / HMZ28H424ZMO are designed to operate two to three indoor units.
DO NOT use this system with one indoor unit.
3. The TRIPLE Zone maximum length is 98 ft. for one indoor unit.
QUAD ZONE
– MZ36H424ZMO / HMZ36H424ZMO
1. The maximum total line set length must not exceed 262 feet for all units using the 36K condenser.
Refrigerant must be added (0.161 oz./ft.) when line set length exceeds 98 ft. total.
2. Quad Zone model MZ36H424ZMO / HMZ36H424ZMO are designed to operate two to four indoor units. DO
NOT use this system with one indoor unit.
3. The Quad Zone maximum length is 115 ft. for one indoor unit.
FIVE PORT
– MZ48H424ZMO
1. The maximum total line set length must not exceed 262 feet for all units using the 48K condenser.
Refrigerant must be added (0.161 oz./ft.) when line set length exceeds 131.2 ft. total.
2. Five Port model MZ48H424ZMO is designed to operate two to five indoor units. DO NOT use this
system with one indoor unit.
3. The Five Port maximum length is 115 ft. for one indoor unit.
NOTE
:
An oil trap is recommended if the indoor unit is over 15 feet in height from the outdoor unit.
