Hitachi RAM-160FSPH Instruction Manual page 6

Inverter-driven multi-split system air conditioning
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(When installing under roofs where condensate drips, this may wet the floor to cause fall in winter.) Also, using
central draining pipes is easier. (In frigid zones, condensate from defrosting may freeze in winter, do not use
central draining pipes.)
4.Provide a foundation so that the entire footing of the outdoor unit can be mounted on the foundation. The height
of the foundation should be 100mm to 300mm higher than the ground level.
Strong wind blowing directly against the product installation method
Follow the instructions below when installing the unit on the roof with strong winds in the absence of obstruction:
Do not face the unit's air outlet grill towards the
strong winds. This will interfere the air ventilation of
the unit and will cause damage to the unit.
Note: When strong winds continuously blow toward
the air outlet of the outdoor unit, the ventilation fan
will rotate in reverse and become damage.
●When on the roof or open space, the strong winds will damage the unit.
Please make steel wire cable and other to fix the unit.
(4) Installation Work
When strong winds blowing directly against the air outlet grille
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