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6
Outdoor Unit Installation Guideline
• Where a wall or other obstacle is in the path of outdoor unit’s inlet or outlet airflow, follow the installation guidelines below.
• For any of the below installation patterns, the wall height on the exhaust side should be 1200mm or less.
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 allow-
able length per room is 3m.
)
Piping to each indoor unit
20m max.
Total length of piping between all units
30m max.
If the outdoor unit is positioned higher than the
indoor units.
If the outdoor unit is positioned otherwise.
(If lower than one or more indoor units.)
More than 50
More than 100
Side view
Direction
of air
1200
or less
Wall facing one side
Top view
More than 150
More than 300
More than 50
unit: mm
Walls facing three sides
Top view
More than 50
More than 50
More than 150
More
than 100
Walls facing two sides
Level
difference:
15m max.
Level
difference:
7.5m max.
Indoor Unit
Outdoor Unit
Level
difference:
7.5m max.
Level
difference:
15m max.
Outdoor Unit
Indoor Unit
