SAFETY PRECATIONSBefore starting to use the system, read carefully this"SAFETY PRECAUTIONS" to ensure a proper operation of the system.Safety precautions described here are classified to " WARNING" and " CAUTION". Precautions which are shown in the column of" WANING" means that an improper handing could lead to a grave result like a death, serious injury, etc. However, even if precautionsare shown in the column of " CAUTION", a very serious problem could occur depending on situation. Make sure to observe these safetyprecautions faithfully because they are very important information to ensure the safety.Symbols which appear frequently in the text have following meanings.Strictly prohibited. Observe instructions faithfully. Provide a positive grounding.When you have read through the manual, keep it always at hand for read consultation. If the operator is replaced, make sure to hand overthis manual to the new operator.ONOFFWARNINGCAUTIONWARNINGCAUTIONCAUTIONS FOR INSTALLATIONThe system should be applied to places asoffice, restaurant, residence and the like.The system should be installed by yourdealer or a professional installer.When you need some optional devices such as a hu-midifier, electric heater, etc., be sure to use the productswhich are recommended by us. These devices shouldbe attached by a professional installer.Application to inferior environment such as an engi-neering shop, could cause equipment malfunction andserious injury or death.Installation by yourself is not encouraged becauseit could cause such problems as water leakage,electrical shock or fire accident by some improperhanding.Installation by yourself is not encouraged because itcould cause such problems as water leakage, electricalshock or fire accident by some improper handing.Do not install nearby the place where mayhave leakage of flammable gas.Depending on the place of installation, acircuit breaker may be necessary.Drain pipe should be arranged to provide apositive draining.If the gas leakes and gathers around, it may cause thefire.Unless the circuit breaker is installed, it couldcause elecrical shocks.Where strong winds may prevail, thesystem should be fixed securely to preventa collapse.Install on the place where can endurethe weight of air conditioner.Make sure the system is grounded.If the pipe is arranged improperly, furniture or thelikes may be damaged by leaked water.Bodily injury could result by a collapse. Bodily injury could result by a careless installation. Grounding cable should never be connected to a gaspipe, city water pipe, lightning conductor rod orgrounding cable of telephone. If the grounding cableis not set properly, it could cause electric shocks.CAUTIONS FOR OPERATIONYou should refrain from exposing your bodydirectly to cool wind for a long time.Do not poke the air inlet or outlet with abar, etc.When any abnormal condition (scorching smell or oth-ers) is found, stop the operation immediately and turnoff the power switch. Then consult your dealer.It could affect your physical condition or cause somehealth problems.Since the internal fan is operating with a highspeed, it could cause an injury.If you continue the operation without removing thecause, it could result in a trouble, electric shock or fire.The system should never be used for anyother purposes than intended such as forpreservation of food, flora and fauna, pre-cision deices or work of art.Do not handle switches with a wet hand. Combustion apparatus should not be placedallowing a direct exposure to wind of air con-ditioner.Incomplete combustion could occur on the apparatus.It could cause electric shocks.It could cause deterioration of food or other problems.3