Johnson Controls YVAHP0721CW Series, Service Manual

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Take the following precautions to reduce the risk of property damage.
Ɣ Be careful that moisture, dust, or variant refrigerant compounds not enter the refrigerant cycle during
installation work. Foreign matter could damage internal components or cause blockages.
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Ɣ Do not install this unit in any place where silicon gases can coalesce. If the silicon gas molecules
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could run inside of the electrical box, possibly causing electrical failures.
Ɣ When installing the unit in a hospital or other facility where electromagnetic waves are generated
from nearby medical and/or electronic devices, be prepared for noise and electronic interference
Electromagnetic Interference (EMI). Do not install where the waves can directly radiate into the
electrical box, controller cable, or controller. Inverters, appliances, high-frequency medical equipment,
and radio communications equipment may cause the unit to malfunction. The operation of the unit
may also adversely affect these same devices. Install the unit at least 10 ft. (approximately 3m) away
from such devices.
Ɣ When a wireless controller is used, locate at a distance of at least 3.3 ft. (approximately 1 meter)
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receiving operation commands.
Ɣ Do not install the unit in any location where animals and plants can come into direct contact with the
outlet air stream. Exposure could adversely affect the animals and plants.
Ɣ Do not install the unit with any downward slope to the side of the drain adaptor. If you do, you may
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Ɣ Be sure the drain hose discharges water properly. If connected incorrectly, it may cause leaks.
Ɣ Do not install the unit in any place where oil can seep onto the units, such as table or seating areas in
restaurants, and so forth. For these locations or social venues, use specialized units with oil-resistant
features built into them. In addition, use a specialized ceiling fan designed for restaurant use. These
specialized oil-resistant units can be ordered for such applications. However, in places where large
quantities of oil can splash onto the unit, such as a factory, even the specialized units cannot be used.
These products should not be installed in such locations.
Installation Precautions
To reduce the risk of serious injury or death, the following installation
precautions must be followed.
Ɣ When installing the unit into…
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construct a strong wood or metal frame to provide added support.
Ɠ A room: Properly insulate any refrigerant tubing run inside a room to prevent “sweating” that can
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Ɠ Damp or uneven areas: Use a raised concrete pad or concrete blocks to provide a solid, level
foundation for the unit to prevent water damage and abnormal vibration.
Ɠ An area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame.
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Ɠ A snowy area: Install the outdoor unit on a raised platform that is higher than drifting snow. Provide
snow vents.
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corrosion, or product failure.
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above a kitchen stove.
Ɠ Where oil (including machinery oil) may be present.
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tub or hot spring.
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Ɠ Where the air quality is of high acidity.
Ɠ Where harmful gases can be generated from decomposition.