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10. Installation
Outdoor unit installation
WARNING
• Should adopt bar type louver. Don't use a type of rain resistance louver.
• Louver specifications.
– Angle criteria : less than 20˚
– Opening ratio criteria : greater than 80%
Installing the outdoor unit in cold region
• In cold regions with lots of snowfall, install a snow prevention duct, as a sufficient countermeasure, to prevent
snow from accumulating on the outdoor unit. When the snow prevention duct is not installed, frost may
accumulate on the heat exchanger and heating operation may not work normally.
• Air outlet of the duct should not be directed to the enclosed space.
CAUTION
• Cautions regarding on installing the frame and selecting the base ground
– Height (h) of the frame and the base ground should be higher than the "heaviest expected snowfall".
– Area of the frame and the base ground should not be larger than the are of the outdoor unit. Snow may
accumulate if the area of the frame or the base ground is larger.
Installing the outdoor unit in windy region
• In windy regions such as near sea shores, protection wall or wind protection duct must be installed for normal
operation of the outdoor unit. (Refer to the illustration of the snow prevention duct, for installing the wind
protection duct.)
• Install the wind prevention duct with the consideration of major wind direction. If the direction of the discharge
part is same as major direction of the wind, it could cause product's performance decrease.
CAUTION
• Cautions regarding on installing the frame and selecting the base ground
– The base ground must be solid and the outdoor unit must be fixed with anchor bolts.
– Make sure to install outdoor unit in a place strong enough
to withstand its weight. If the place cannot withstand the weight of the outdoor unit, outdoor unit may fall
and cause personal injury.
– When installing on a rooftop subject to strong wind, countermeasures must be taken to prevent the unit
from falling down.
– Use a frame that is resistant to corrosion.
[Bar type louver]
[Rain resistance louver]
h
h
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