English 1BEVN32AV1BEVN50AV1BEVN125AV1VRV SYSTEM Air Conditioners Installation manualCONTENTS1. SAFETY PRECAUTIONS...............................................................................................12. BEFORE INSTALLATION ..............................................................................................33. BEFORE INSTALLATION ..............................................................................................44. SELECTING INSTALLATION SITE................................................................................45. PREPARATIONS BEFORE INSTALLATION .................................................................56. BEV UNIT INSTALLATION ............................................................................................67. REFRIGERANT PIPING WORK ....................................................................................68. ELECTRIC WIRING WORK ...........................................................................................99. TEST OPERATION ......................................................................................................131. SAFETY PRECAUTIONSPlease read these “SAFETY PRECAUTIONS” carefully before installing air conditioning unit and be sure toinstall it correctly. After completing installation, conduct a trial operation to check for faults and explain to thecustomer how to operate the air conditioner and take care of it with the aid of the operation manual. Ask thecustomer to store the installation manual along with the operation manual for future reference.This air conditioner comes under the term “appliances not accessible to the general public”.This unit is a class A product. In a domestic environment this product may cause radio interference in whichcase the user may be required to take adequate measures.Meaning of WARNING and CAUTION notices.WARNING..........Failure to follow these instructions properly may result in personal injury or loss of life.CAUTION ...........Failure to observe these instructions properly may result in property damage or per-sonal injury, which may be serious depending on the circumstances.WARNING• Ask your dealer or qualified personnel to carry out installation work.Do not attempt to install the air conditioner yourself. Improper installation may result in water leakage,electric shocks or fire.• Install the air conditioner in accordance with the instructions in this installation manual.Improper installation may result in water leakage, electric shocks or fire.• Consult your local dealer regarding what to do in case of refrigerant leakage.When the air conditioner is to be installed in a small room, it is necessary to take proper measures so thatthe amount of any leaked refrigerant does not exceed the concentration limit in the event of a leakage. Oth-erwise, this may lead to an accident due to oxygen depletion.• Be sure to use only the specified accessories and parts for installation work.Failure to use the specified parts may result in the unit falling, water leakage, electric shocks or fire.• Install the air conditioner on a foundation strong enough to withstand the weight of the unit.A foundation of insufficient strength may result in the equipment falling and causing injury.• Carry out the specified installation work after taking into account strong winds, typhoons or earthquakes.Failure to do so during installation work 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 carriedout by qualified personnel according to local laws and regulations and this installation manual.An insufficient power supply capacity or improper electrical construction may lead to electric shocks or fire.