Hitachi RAC-112SQB, Installation Manual

Page: 6 / 20

6
(Unit: mm)
Two or More Units
(over and under)
Two or More Units
(over and under)
Two or More Units
(side by side and over and under)
Two or More Units
(side by side and over and under)
No obstruction on sides
and above
Obstruction in front of the
air outlet
No obstruction on sides and
above
Obstruction in front of the air
outlet
(2) Installation locations
1) Dry and well-ventilated locations.
2) Do not expose the unit under direct sunlight and to heat sources. Use a shade when direct sunlight is unavoidable.
3) Make sure the noise from unit operation does not disturb neighbors (noise at the back (air inlet) is about 3dB higher).
4) Do not directly ventilate air from the unit to ornamental plants or the window of neighbors.
5) Do not install the heat exchanger in places where dust or scrap paper can enter easily. Add a wind guard (see below)
as necessary to deflect wind.
6) Avoid installing the unit in places with headwind. Add a wind guard when installing in places with strong wind.
7) Pay attention to the following items during installation:
1. To prevent the outdoor unit from falling, shaking, and producing noise in a strong wind or an earthquake, install
the unit using appropriate methods. Determine the required installation strength by calculating the seismic strength.
Do not install the unit at locations where strong wind may blow off the roof or wall. Secure the unit with steel wire
if necessary.
2. Add rubber cushions to the four legs of the unit stand.
3. The location should be convenient for draining rainwater and condensate from defrosting. For good drainage, the
outdoor unit should be installed in places with draining facilities. (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 easily in winter, do not use central draining pipes.)
4. Legs of the unit must be installed on a robust stand of about 100-300mm tall.
Installation in Places with Strong Winds
Follow the instructions below when installing the unit on the roof with strong winds in the absence of obstruction.
• Do not face the air outlet toward
headwinds. This will interfere with air
ventilation from the unit and damage
the unit.
Attention
When strong winds continuously blow
toward the air outlet, the ventilation fan
will rotate in reverse and become
damaged.
• When installing the unit
with the air outlet facing
headwinds.
1. When add a wind guard
Optional wind guard
Model Q’ty
WSP-160A 1
2. When there is a wall
Keep at least 600mm from the wall.
400+
250+
400+
1000+
400+
250+
250+
400+
1000+
Strong wind
Strong wind
Wall
Wind direction
Air out
Air inlet
Face the air outlet
toward the wall or
wind shelter.
Optional wind guard