Daikin Super Multi NX 3MXS-G Series Engineering Data page 226

EDUS121131
• Securely fasten the unit terminal cover (panel). If the terminal cover/panel is not installed properly, dust or water may
enter the condenser 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.
• 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.
• The heat exchanger fins are sharp enough to cut. To avoid injury wear gloves or cover the fins while working around
them.
• 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.
• 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 malfunction.
(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.
Installation Manual
Safety Considerations
221
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