Hitachi Set Free mini-HNRQ1 Series, Service Manual

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11
INSTALLATION
2. Outdoor Unit Installation
2.1 Installation Location and Precautions
●
When installing the unit into:
● A wall: Make sure the wall is strong enough to hold the weight of the unit. It may be necessary to
construct a strong wood or metal frame to provide added support.
● A room: Properly insulate any refrigerant tubing run inside a room to prevent “sweating” that can
cause dripping and water damage to wall and floors.
● Damp or uneven areas: Use a raised concrete pad or concrete blocks to provide a solid and level
foundation for the unit to prevent water damage and abnormal vibration.
● An area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame.
Provide a suitable wall for wind prevention (field-supplied).
● A snowy area: Install the outdoor unit on a raised platform that is higher than drifting snow.
Provide snow roof for snow prevention (field-supplied).
●
Do not install the unit in the following places. Otherwise, it can result in an explosion, fire, deformation,
corrosion, or product failure.
● Explosive or flammable atmosphere.
● Where a fire, oil, steam, or powder can directly enter the unit, such as in close proximity or
directly above a kitchen stove.
● Where oil (including machinery oil) may be present.
● Where corrosive gases such as chlorine, bromine, or sulphide can accumulate, such as near a
hot tub or hot spring.
● Where dense, salt-laden airflow is heavy, such as in coastal regions.
● Where the air quality is of high acidity.
● Where harmful gases can be generated from decomposition.
●
Do not install the indoor unit where such dripping can cause moisture damage or uneven locations: Use a
raised concrete pad or concrete blocks to provide a solid and level foundation for the unit to prevent
water damage and abnormal vibration. Do not position the drain pipe for the indoor unit near any
sanitary sewers where corrosive gases may be present.
●
Before performing any brazing work, be sure that there are no flammable materials or open flames nearby.
●
Perform a test run to ensure normal operation. Safety guards, shields, barriers, covers, and protective
devices must be in place while the compressor/unit is operating. During the test run, keep fingers and
clothing away from any moving parts.
●
Clean up the site when finished, remember to check that no metal scraps or bits of wiring have been left
behind inside the unit being installed.
●
After installation work for the system has been completed, explain the “Safety Precautions”, the proper
use and maintenance of the unit to the customer according to the information in all manuals that came
with the system. All manuals and warranty information must be given to the user or be left near the
Indoor Unit.