English3• 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. Also areas that are rich in sodiumsuch as seashores.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 ofthe unit.4. Where flammable gas may leak, where there is carbon fibre or ignitable dust suspensions in the air, orwhere volatile flammables such as paint thinner or gasoline are handled.Operating the unit in such conditions may result in fire.SPECIAL NOTICE OF PRODUCT• Refrigerant• The refrigerant R410A requires that strict Precautions be observed for keeping the system clean,dry and tightly sealed.A. Clean and DryStrict measure must be taken to keep impurities (including SUNISO oil and other mineral oils as well asmoisture) out of the system.B. Tightly sealedR410A contains no chlorine, does not destroy the ozone layer and so does not reduce the earth’sprotection against harmful ultraviolet radiation. R410A will contribute only slightly to the greenhouseeffect if released into the almosphere• Since design pressure is 4.0 MPa or 40 bar (for R407C units: 3.3MPa or 33bar), the thickness of pipesmust be greater than previously. Since R410A is a mixed refrigerant, the required additional refrigerantmust be charged in its liquid state. (If the system is charged with refrigerant in its gaseous state, due tocomposition change, the system will not function normally). The indoor units is designed for R410A use.See the catalogue for indoor unit models that can be connected. (Normal operation is not possible whenconnecting units that are originally designed for other refrigerants)2. BEFORE INSTALLATIONDo not exert pressure on the resin parts when opening the unit or when moving it after opening.Be sure to check the type of R410A refrigerant to be used before doing any work. (Using an incor-rect refrigerant will prevent normal operation of the unit.)• When opening the unit or moving it after opening, be sure to lift it by holding on to the lifting lugs withoutexerting any pressure on other parts, especially, drain piping, and other resin parts.• Decide upon a line of transport.• Leave the unit inside its packaging while moving, until reaching the installation site. Use a sling of softmate¬rial, where unpacking is unavoidable or protective plates together with a rope when lifting, to avoiddamage or scratches to the unit.• Refer to the installation manual of the outdoor unit for items not described in this manual.• Do not dispose of any parts necessary for installation until the installation is complete.• In order to protect the indoor unit from damage, use packing materials to protect the unit after carryinguntil the installation starts.• When selecting installation site, refer to the paper pattern.• Do not use the unit in locations with high salt content in the air such as beachfront property, locationswhere the voltage fluctuates such as factories, or in automobiles or marine vessels.