SAFETY PRECAUTIONS
1.Before installation and electric work
sBefore installing the unit, make sure you read all the “Safety precautions”.
sThe “Safety precautions” provide very important points regarding safety. Make sure you follow them.
sThis equipment may not be applicable to
sThis equipment may have an adverse effect equip- ment on the same electrical supply system.
sPlease report to or take consent by the supply au- thority before connection to the system.
Symbols used in the text
Warning:
Describes precautions that should be observed to prevent danger of injury or death to the user.
Caution:
Describes precautions that should be observed to prevent damage to the unit.
Symbols used in the illustrations
: Indicates an action that must be avoided.
: Indicates that important instructions must be followed. 
: Indicates a part which must be grounded.
: Indicates that caution should be taken with rotating parts. (This symbol is displayed on the main unit label.) <Color: Yellow>
: Beware of electric shock (This symbol is displayed on the main unit label.) <Color: Yellow>
Warning:
Carefully read the labels affixed to the main unit.
Warning:
•Ask the dealer or an authorized technician to install the air con- ditioner.
-Improper installation by the user may result in water leakage, elec- tric shock, or fire.
•Install the air unit at a place that can withstand its weight.
-Inadequate strength may cause the unit to fall down, resulting in injuries.
•Use the specified cables for wiring. Make the connections se- curely so that the outside force of the cable is not applied to the terminals.
-Inadequate connection and fastening may generate heat and cause a fire.
•Prepare for typhoons and other strong winds and earthquakes and install the unit at the specified place.
-Improper installation may cause the unit to topple and result in injury.
•Always use an air cleaner, humidifier, electric heater, and other accessories specified by Mitsubishi Electric.
-Ask an authorized technician to install the accessories. Improper installation by the user may result in water leakage, electric shock, or fire.
•Never repair the unit. If the air conditioner must be repaired, consult the dealer.
-If the unit is repaired improperly, water leakage, electric shock, or fire may result.
•Do not touch the heat exchanger fins.
-Improper handling may result in injury.
•When handling this product, always wear protective equipment. EG : Gloves, full arm protection namely boiler suit, and safety glasses.
-Improper handling may result in injury.
•If refrigerant gas leaks during installation work, ventilate the room.
-If the refrigerant gas comes into contact with a flame, poisonous gases will be released.
•Install the air conditioner according to this Installation Manual.
-If the unit is installed improperly, water leakage, electric shock, or fire may result.
•Have all electric work done by a licensed electrician according to “Electric Facility Engineering Standard” and “Interior Wire Regulations”and the instructions given in this manual and al- ways use a special circuit.
-If the power source capacity is inadequate or electric work is per- formed improperly, electric shock and fire may result.
•Securely install the cover of control box and the panel.
-If the cover and panel are not installed properly, dust or water may enter the outdoor unit and fire or electric shock may result.
•When installing and moving the air conditioner to another site, do not charge the it with a refrigerant different from the refrig- erant (R22) specified on the unit.
-If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be dam- aged.
•If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit even if the refrigerant should leak.
-Consult the dealer regarding the appropriate measures to pre- vent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due to lack of oxygen in the room could result.
•When moving and reinstalling the air conditioner, consult the dealer or an authorized technician.
-If the air conditioner is installed improperly, water leakage, elec- tric shock, or fire may result.
•After completing installation work, make sure that refrigerant gas is not leaking.
-If the refrigerant gas leaks and is exposed to a fan heater, stove, oven, or other heat source, it may generate noxious gases.
•Do not reconstruct or change the settings 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 Mitsubishi Electric are used, fire or explosion may result.
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