CAUTION
• While following the instructions in this installation manual,
install drain piping to ensure proper drainage and insulate
piping to prevent condensation.
Improper drain piping may result in indoor water leakage and
property damage.
• Install the indoor and outdoor units, power cord and
connecting wires at least 1 meter away from televisions or
radios to prevent picture interference and noise.
(Depending on the incoming signal strength, a distance of
1 meter may not be sufficient to eliminate noise.)
• Remote controller (wireless kit) transmitting distance can be
shorter than expected in rooms with electronic fluorescent
lamps (inverter or rapid start types).
Install the indoor unit as far away from fluorescent lamps as
possible.
• Do not install the air conditioner in the following locations:
1. Where there is a high concentration of mineral oil spray or
vapour (e.g. a kitchen).
Plastic parts will deteriorate, parts may fall off and water
leakage could result.
2. Where corrosive gas, such as sulphurous acid gas, is
produced.
Corroding of copper pipes or soldered parts may result in
refrigerant leakage.
3. Near machinery emitting electromagnetic radiation.
Electromagnetic radiation may disturb the operation of the
control system and result in a malfunction of the unit.
4. Where flammable gas may leak, where there is carbon
fibre or ignitable dust suspensions in the air, or where
volatile flammables such as paint thinner or gasoline are
handled.
Operating the unit in such conditions may result in fire.
• The air conditioner is not intended for use in a potentially
explosive atmosphere.
• Install in a machine room that is free of moisture. The unit is
designed for indoor use.
• Make sure to provide for adequate measures in order to
prevent that the outdoor unit be used as a shelter by small
animals.
• Small animals making contact with electrical parts can
cause malfunctions, smoke or fire. Please instruct the
customer to keep the area around the unit clean.
• Disposal requirements
Dismantling of the unit, treatment of the refrigerant, of oil
and of other parts must be done in accordance with relevant
local and national legislation.
SPECIAL NOTICE PRODUCT
•
The refrigerant R410A requires that strict precautions be
observed for keeping the system clean, dry and tightly sealed.
A.
Clean and dry
Strict measures must be taken to keep impurities
(including SUNISO oil and other mineral oils as well as
moisture) out of the system.
B.
Tightly sealed
R410A contains no chlorine, does not destroy the ozone
layer and so does not reduce the earth's protection against
harmful ultraviolet radiation. R410A will contribute only slightly
to the greenhouse effect if released into the atmosphere.
•
Since design pressure is 4.0 MPa or 40 bar (for R407C units:
3.3 MPa or 33 bar), the thickness of pipes must be greater
than previously. Since R410A is a mixed refrigerant, the
required additional refrigerant must be charged in its liquid state.
(If the system is charged with refrigerant in its gaseous state,
2
due to composition change, the system will not function
normally). The indoor unit is designed for R410A use.
See the catalogue for indoor unit models that can be
connected. (Normal operation is not possible when connecting
units that are originally designed for other refrigerants.)
2. BEFORE INSTALLATION
• When moving the unit while removing it from the carton
box, be sure to lift it by holding on to the four lifting lugs
without exerting any pressure on other parts, especially,
the refrigerant piping, drain piping, flanges and other
resin parts.
• Be sure to check the type of R410A refrigerant to be used
before installing the unit. (Using an incorrect refrigerant will
prevent normal operation of the unit.)
• The accessories needed for installation must be retained in
your custody until the installation work is completed. Do not
discard them!
• Decide upon a line of transport.
• Leave the unit inside its packaging while moving, until
reaching the installation site. Where unpacking is unavoidable,
use a sling of soft material or protective plates together with
a rope when lifting, to avoid damage or scratches to the unit.
• When moving the unit or affter opening, hold the unit by the
hanger brackets (× 4). Do not apply force to the refrigerant
piping, drain piping, flanges or plastic parts.
• For the installation of outdoor unit, refer to the installation
manual attached to the outdoor unit.
• Do not install or operate the unit in rooms mentioned below.
• Laden with mineral oil, or filled with oil vapor or spray
like in kitchens. (Plastic parts may deteriorate which
could eventually cause the unit to fall out of place, or
could lead to leaks.)
• Where corrosive gas like sulfurous gas exists.
(Copper tubing and brazed spots may corrode which
could eventually lead to refrigerant leaks.)
• Where exposed to combustible gases and where
volatile flammable gas like thinner or gasoline is used.
(Gas in the vicinity of the unit could ignite.)
• Where machines can generate electromagnetic
waves. (Control system may malfunction.)
• Where the air contains high levels of salt such as that
near the ocean and where voltage fluctuates greatly
such as that in factories.
Also in vehicles or vessels.
• This unit, both indoor and outdoor, is suitable for installation in a
commercial and light industrial environment.
If installed as a household appliance it could cause
electromagnetic interference.
2-1 PRECAUTIONS
• Be sure to read this manual before installing the indoor unit.
• Entrust installation to the place of purchase or a qualified
serviceman. Improper installation could lead to leaks and,
in worse cases, electric shock of fire.
• Use only parts provided with the unit or parts satisfying
required specifications. Unspecified parts could cause the
unit to fall out of place, or could lead to leaks and, in worse
cases, electric shock or fire.
• Be sure to mount an air filter (part to be procured in the field)
in the suction air passage in order to prevent water leaking,
etc.
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