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CAUTION
•
Do not touch the switch with wet fingers. Touching a
switch with wet fingers can cause electric shock.
• Do not allow children to play on or around the unit to
prevent injury.
• Do not touch the refrigerant pipes during and imme-
diately after operation as the refrigerant pipes may be
hot or cold, depending on the condition of the refriger-
ant flowing through the refrigerant piping, compressor,
and other refrigerant cycle parts. Your hands may suf-
fer burns or frostbite if you touch the refrigerant pipes.
To avoid injury, give the pipes time to return to normal
temperature or, if you must touch them, be sure to wear
proper gloves.
•
Heat exchanger fins are sharp enough to cut.
To avoid injury wear gloves or cover the fins when
working around them.
• Install drain piping to proper drainage. Improper drain
piping may result in water leakage and property dam-
age.
• Insulate piping to prevent condensation.
• Be careful when transporting the product.
• Do not turn off the power supply immediately after
stopping operation. Always wait for at least 5 minutes
before turning off the power supply. Otherwise, water
leakage may occur.
• Do not use a charging cylinder. Using a charging cylin-
der may cause the refrigerant to deteriorate.
•
Refrigerant R410A in the system must be kept clean,
dry, and tight.
(a) Clean and Dry - Foreign materials (including min-
eral oils such as SUNISO oil or moisture) should be
prevented from getting into the system.
(b) Tight - R410A does not contain any chlorine, does
not destroy the ozone layer, and does not reduce
the earth’s protection again harmful ultraviolet
radiation. R410A can contribute to the greenhouse
effect if it is released. Therefore take proper mea-
sures to check for the tightness of the refrigerant
piping installation. Read the chapter Refrigerant
Piping Work and follow the procedures.
•
Since R410A is a blend, the required additional refrig
-
erant must be charged in its liquid state. If the refriger-
ant is charged in a gaseous state, its composition can
change and the system will not work properly.
•
The indoor unit is for R410A. See the catalog for indoor
models that can be connected. Normal operation is not
possible when connected to other units.
• Handheld 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 far away from fluorescent
lamps as much as possible.
• Indoor units are for indoor installation only. Outdoor
units can be installed either outdoors or indoors.
• Do not install the air conditioner or heat pump in the
following locations:
(a) Where a mineral oil mist or oil spray or vapor is
produced, for example, in a kitchen.
Plastic parts may deteriorate and fall off or result in
water leakage.
(b) Where corrosive gas, such as sulfurous acid gas, is
produced.
Corroding copper pipes or soldered parts may
result in refrigerant leakage.
(c) Near machinery emitting electromagnetic waves.
Electromagnetic waves may disturb the operation
of the control system and cause the unit to malfunc-
tion.
(d) Where flammable gas may leak, where there is
carbon fiber, or ignitable dust suspension in the
air, or where volatile flammables such as thinner
or gasoline are handled. Operating the unit in such
conditions can cause a fire.
NOTE
• Install the power supply and transmission wires for the
indoor and outdoor units at least 3.5 ft. (1 m) away from
televisions or radios to prevent image interference or
noise. Depending on the radio waves, a distance of
3.5 ft. (1 m) may not be sufficient to eliminate the noise.
• Dismantling the unit, treatment of the refrigerant, oil
and additional parts must be done in accordance with
the relevant local, state, and national regulations.
• Do not use the following tools that are used with con-
ventional refrigerants: gauge manifold, charge hose,
gas leak detector, reverse flow check valve, refrigerant
charge base, vacuum gauge, or refrigerant recovery
equipment.
• If the conventional refrigerant and refrigerator oil are
mixed in R410A, the refrigerant may deteriorate.
• This air conditioner or heat pump is an appliance that
should not be accessible to the general public.
•
As design pressure is 580 psi (4.0 MPa), the wall thick
-
ness of field-installed pipes should be selected in
accordance with the relevant local, state, and national
regulations.
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