Installation Guidelines
• Where a wall or other obstacle is in the path of outdoor unit's intake or exhaust airflow, follow the installation guidelines below.
• For any of the below installation patterns, the wall height on the outlet side should be 47-1/4 inch (1200mm) or less.
Wall facing one side
More than
More than
3-15/16 (100)
13-3/4 (350)
47-1/4
(1200)
or less
Side view
Walls facing three sides
More than
1-15/16 (50)
Top view
Selecting a Location for Installation of
the Indoor Units
• The maximum allowable length of refrigerant piping, and the maximum allowable height difference between the outdoor and
indoor units, are listed below. (The shorter the refrigerant piping, the better the performance. Connect so that the piping is as
short as possible. Shortest allowable length per room is 10ft (3m).)
Outdoor unit capacity class
Piping to each indoor unit
Total length of piping between all units
Level
difference:
Level
49-1/4ft (15m)
difference:
max.
24-5/8ft (7.5m)
max.
If the outdoor unit is positioned higher than the indoor units.
7
Walls facing two sides
More than 3-15/16 (100)
More than 13-3/4 (350)
unit: inch (mm)
2MXS18∗
164ft (50m) max.
Indoor Unit
Outdoor Unit
More
than
3-15/16
(100)
More than
1-15/16 (50)
3MXS24∗, 4MXS36∗
82ft (25m) max.
230ft (70m) max.
Level
difference:
49-1/4ft (15m)
max.
If the outdoor unit is positioned lower than
one or more of the indoor units.
More than
More than
13-3/4
3-15/16 (100)
(350)
More than
13-3/4 (350)
Top view
Level
difference:
24-5/8ft (7.5m)
max.
Indoor Unit
More than
1-15/16 (50)
Outdoor Unit
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