Mitsubishi Electric Owners Manual - Enlarge page 1 of 9
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From inside (document excerpt):
SG79Y756H01 SPLIT-TYPE AIR CONDITIONERS Models English utilized HFC MS-GA50VB MSH-GA50VB INSTALLATION MANUAL Series R410A When installing an MXZ series outdoor unit, refer to the MS and MSH type manual for indoor unit set up. [FLARE CONNECTION TYPE] IMPORTANT NOTES TO COMPLY WITH THE REQUIREMENT OF AUSTRALIAN STANDARD AS/NZS 3000 ELECTRICAL INSTALLATIONS (Wiring Rules), THE ELECTRICAL WIRING REQUIRED BETWEEN THE INDOOR AND OUTDOOR UNITS MUST BE INSTALLED BY A LICENCED ELECTRICAL CONTRACTOR.
1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY Be sure to read “THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY ” before installing the air conditioner. Be sure to observe the cautions specified here as they include important items related to safety. The indications and meanings are as follows. WARNING Could lead to death, serious injury, etc. CAUTION Could lead to serious injury in particular environments when operated incorrectly. CAUTION Earth the unit. Do not connect the earth to a gas pipe, water pipe, lightning rod or telephone earth. Defective earthing could cause an electric shock. Do not install the unit in a place where an inflammable gas leaks. If gas leak and accumulate in the area surrounding the unit, it could cause an explosion. Install an earth leakage breaker depending on the installation place (Where it is humid). If an earth leakage breaker is not installed, it could cause an electric shock. Perform the drainage/piping work securely according to the installation manual. If there is a defect in the drainage/piping work, water could drop from the unit and household goods could be wet and damaged. Fasten a flare nut with a torque wrench as specified in this manual. When fastened too tight, a flare nut may broken after a long period and cause a leakage of refrigerant. ยท After reading this manual, be sure to keep it together with the OPERATING INSTRUCTIONS in a handy place on the customer’s site. WARNING Do not install the unit by yourself (customer). Incomplete installation could cause injury due to fire, electric shock, the unit falling or leakage of water. Consult the dealer from whom you purchased the unit or special installer. Install the unit securely in a place which can bear the weight of the unit. When installed in an insufficient strong place, the unit could fall causing injury. Use the specified wires to connect the indoor and outdoor units securely and attach the wires firmly to the terminal block connecting sections so the stress of the wires is not applied to the sections. Incomplete connecting and fixing could cause fire. Do not use intermediate connection of the power cord or the extension cord and do not connect many devices to one AC outlet. It could cause a fire or an electric shock due to defective contact, defective insulation, exceeding the permissible current, etc. Check that the refrigerant gas do not leak after installation has completed. If refrigerant gas leaks indoors, and comes into contact with the fire of a fan heater, space heater, stove, etc., harmful substances will be generated. Perform the installation securely referring to the installation manual. Incomplete installation could cause a personal injury due to fire, electric shock, the unit falling or leakage of water.