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Precautions on Outdoor Unit Installation
•
Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after
installed.
•
In accordance with the foundation drawing in fi x the unit securely by means of the foundation bolts. (Prepare 4 sets of M8 or M10
foundation bolts, nuts and washers each which are available on the market.)
•
It is best to screw in the foundation bolts until their length are 20mm from the foundation surface.
Outdoor Unit Installation Guidelines
•
Where a wall or other obstacle is in the path of outdoor unit's inlet or outlet airfl ow, follow the installation guidelines below.
•
For any of the below installation patterns, the wall height on the outlet side should be 1200mm or less.
Wall facing one side
More than 100
Selecting a Location for Installation of
the Indoor Units and Water Heater
•
The maximum allowable length of refrigerant piping, and the maximum allowable height difference, between the indoor unit or
water heater and outdoor unit 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 3m.)
Piping to each indoor unit
Total len gth of piping between all indoor units
∗
Piping to water heater
Indoor unit
Level
difference:
15m max.
Level
difference:
7.5m max.
If the outdoor unit is positioned higher than the indoor units
and water heater.
English
More than 350
1200
or less
Side view
25m max.
60m max.
15m max.
Outdoor unit
Level
difference:
7.5m max.
Water heater
Walls facing two sides
More than 350
More
than 100
More than 50
Top view
∗ Additional refrigerant charging is required if the total
length of the indoor unit connection pipe exceeds 30m.
Refer to charging with refrigerant (page 9) for details.
Indoor unit
Level
difference:
15m max.
Level
difference:
7.5m max.
If the outdoor unit is positioned otherwise.
(If lower than one or more indoor units.)
More than 50
unit: mm
Water heater
Level
difference:
7.5m max.
Outdoor unit
5
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