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Combinations for Outdoor and Indoor Units
Some of the 22 SEER multi-split outdoor units are able to support up to five indoor units. The figure below
illustrates that a mixture of indoor types may be used on a single 4TXM22 multi port system, provided the
combination is approved. Please reference the multi-zone approved combinations matrix on page 8.
High Efficiency High Wall
Indoor Unit
When the total capacity of the indoor units exceeds the total capacity of the outdoor unit, the system will be
restricted by the capacity of the outdoor unit. All indoor units would not be able to operate at full capacity
at the same time. If the indoor unit combined capacity is less than 100% of the outdoor units' capacity, the
system capacity is limited to the indoor unit(s) combined capacity.
Indoor Unit
High Efficiency High Wall
Floor/Ceiling
Ceiling Concealed
Cassette
Console
Operating Ranges
Cooling Operating Range
Heating Operating Range 18K-24K Units
Heating Operating Range 24K-42K Units
Ceiling Concealed
Indoor Unit
Model
4MXW2709A10N
4MXW2712A10N
4MXW2718A10N
4MXW2724A10N
4MXX8509A10N
4MXX8512A10N
4MXX8518A10N
4MXX8524A10N
4MXD8509A10N
4MXD8512A10N
4MXD8518A10N
4MXD8521A10N
4MXD8524A10N
4MXC8512A10N
4MXC8518A10N
4MXC8524A10N
4MXF8509A10N
4MXF8512A10N
4MXF8518A10N
Outdoor Temperature
Outdoor Temperature -4.0 - 75°F (-20 - 24°C)
Outdoor Temperature -4.0 - 86°F (-20 - 30°C)
9
22 Series Multi-Zone
Cassette
Floor/Ceiling
Indoor Unit
Indoor Unit
Capacity (BTUh)
9,000
12,000
18,000
24,000
9,000
12,000
18,000
24,000
9,000
12,000
18,000
21,000
24,000
12,000
18,000
24,000
9,000
12,000
18,000
0 - 118°F (-18.0 - 48°C)
Console
Indoor Unit
Outdoor Unit
4TXM2218A12N
4TXM2221A13N
4TXM2224A14N
4TXM2230A15N
4TXM2236A15N
4TXM2242A15N
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