Hitachi Primairy Series Installation & Maintenance Manual page 6

SAFETY PRECAUTIONS
• Perform grounding. Do not connect the earth wire to a gas pipe, water pipe, lightning rod or telephone earth wire. Defective
grounding could cause an electric shock.
• Do not install the unit in a place where an inflammable gas leaks. If gas leaks and accumulates in the area surrounding the unit, it
could cause an explosion.
• Fasten a flare nut with a torque wrench as specified in this manual. When fastened too tight, a flare nut may break after a long
period, thereby causing refrigerant leakage.
• 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.
Safety instructions
• Do not let air enter the refrigeration system or discharge refrigerant when moving the air conditioner.
• The installation instructions for appliances that are intended to be permanently connected to fixed wiring, and have a leakage
current that may exceed 10mA, shall state that the installation of a residual current device (RCD) having a rated residual
operating current not exceeding 30mA is advisable.
• This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental
capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the
appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user
maintenance shall not be made by children without supervision.
• If the supply cord is damaged, it must be replaced by the factory or its service department to avoid danger.
• Servicing shall only be performed as recommended by the equipment manufacturer.
• Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the
person competent in the use of flammable refrigerants.
• Means for disconnection, which can provide full disconnection in all poles, must be incorporated in the fixed wiring in accordance
with the wiring rules.
• It is necessary to allow the disconnection of the appliance from the supply after installation. Make sure that the appliance is
disconnected from the supply during service and maintenance, and provide a disconnection with a locking system in the isolated
position.
• The method of connection of the appliance to the electrical supply and interconnection of separate components, and the wiring
diagram with a clear indication of the connections and wiring to external control devices and supply cord are detailed below.
• Power connection and interconnection between outdoor unit and indoor unit should be conducted with the power cord of the
H07RN-F type or the electrically equivalent type. The size of the power cord is detailed in outdoor unit manual below.
• Type and rating of circuit breakers / ELB are detailed below.
• The information on dimensions of the space necessary for correct installation of the appliance including the minimum permissible
distances to adjacent structures is detailed below.
• This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial use by
lay persons.
• In order to avoid a hazard due to inadvertent resetting of the thermal cut-out, this appliance shall not be supplied through an
external switching device, such as a timer, or connected to a circuit that is regularly switched on and off by the user.
• Instructions on additional charging of refrigerants are detailed below.
2 HO2019292HA
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CAUTION