Specifications
EDUS39-900A-F4 Installation
FXMQ-P 23
• Use only specified accessories and parts for
installation work. Failure to use specified parts may
result in water leakage, electric shocks, fire, or the
unit falling.
• Install the air conditioner on a foundation strong
enough that it can withstand the weight of the unit. A
foundation of insufficient strength may result in the
unit falling and causing injuries.
• Take into account strong winds, typhoons, or
earthquakes when installing. Improper installation
may result in the unit falling and causing accidents.
• Make sure that a separate power supply circuit is
provided for this unit and that all electrical work is
carried out by qualified personnel according to local.
state, and national regulations. An insufficient power
supply capacity or improper electrical construction
may lead to electric shocks or fire.
• Make sure that all wiring is secured, that specified
wires are used, and that no external forces act on the
terminal connections or wires. Improper
connections or installation may result in fire.
• When wiring, position the wires so that the terminal
box lid can be securely fastened. Improper
positioning of the terminal box lid may result in
electric shocks, fire, or the terminals overheating.
• Before touching electrical parts, turn off the unit.
• It is recommended to install a ground fault circuit
interrupter if one is not already available. This helps
prevent electrical shocks or fire.
• Securely fasten the outside unit terminal cover
(panel). If the terminal cover/panel is not installed
properly, dust or water may enter the outside unit
causing fire or electric shock.
• When installing or relocating the system, keep the
refrigerant circuit free from substances other than
the specified refrigerant (R-410A) such as air. Any
presence of air or other foreign substance in the
refrigerant circuit can cause an abnormal pressure
rise or rupture, resulting in injury.
• Do not change the setting of the protection devices.
If the pressure switch, thermal switch, or other
protection device is shorted and operated forcibly, or
parts other than those specified by Daikin are used,
fire or explosion may occur.
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
immediately after operation as the refrigerant pipes
may be hot or cold, depending on the condition of
the refrigerant flowing through the refrigerant
piping, compressor, and other refrigerant cycle
parts. Your hands may suffer 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.
• Install drain piping to proper drainage. Improper
drain piping may result in water leakage and
property damage.
• Insulate piping to prevent condensation.
• Be careful when transporting the product.
• Do not turn off the power immediately after stopping
operation. Always wait for at least 5 minutes before
turning off the power. Otherwise, water leakage may
occur.
• Do not use a charging cylinder. Using a charging
cylinder may cause the refrigerant to deteriorate.
• Refrigerant R-410A in the system must be kept clean,
dry, and tight.
(a) Clean and Dry -- Foreign materials (including
mineral oils such as SUNISO oil or moisture)
should be prevented from getting into the
system.
(b) Tight -- R-410A does not contain any chlorine,
does not destroy the ozone layer, and does not
reduce the earth’s protection again harmful
ultraviolet radiation. R-410A can contribute to
the greenhouse effect if it is released. Therefore
take proper measures to check for the tightness
of the refrigerant piping installation. Read the
chapter Refrigerant Piping and follow the
procedures.
• Since R-410A is a blend, the required additional
refrigerant must be charged in its liquid state. If the
refrigerant is charged in a state of gas, its
composition can change and the system will not
work properly.
• The indoor unit is for R-410A. See the catalog for
indoor models that can be connected. Normal
operation is not possible when connected to other
units.
• 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.
This unit is for indoor use.