Installation and Maintenance
1 Safety Notice
!
WARNING
• Installation should be performed by qualified personnel. (Improper installation may cause water leakage, electrical shock or fire.)
• Install the unit according to the instructions given in this manual. (Incomplete installation may cause water leakage, electrical shock
or fire.)
• Be sure to use the supplied or specified installation parts. (Using other parts may cause the unit looseness, water leakage,
electrical shock or fire.)
• Install the air conditioner on a solid base that can support the unit weight. (An inadequate base or incomplete installation may
cause injury if falls off from the base.)
•
Electrical work should be carried out in accordance with the installation manual and the local and national electrical wiring rules or
code. (Insufficient capacity or incomplete electrical work may cause electrical shock or fire.)
• Be sure to use a dedicated power circuit. (Never use a power supply shared by another appliance.)
•
For wiring, use a cable long enough for the entire distance, do not use an extension cord.
•
Do not put other loads on the power supply, use a dedicated power circuit.
• Use the specified types of wires for electrical connections between the indoor and outdoor units. (Firmly clamp the interconnecting
wires so that the terminals receive no external stresses).
• Incomplete connections or clamping may cause terminal overheating or fire.
• After establishing connection between all the wires, fix the cables to prevent put undue force on the electrical covers or panels.
(Install covers over the wires, incomplete cover installation may cause terminal overheating, electrical shock or fire).
• When installing or relocating the system, be sure to keep the refrigerant circuit free from substances (such as air) other than the
specified refrigerant. (Any presence of air or other foreign substance in the refrigerant circuit may cause an abnormal pressure rise
or rupture, resulting in injury).
•
If any refrigerant leakage occurs during the installation work, ventilate the room.
• After all installations are complete, make sure that there is no refrigerant leakage. (The refrigerant produces a toxic gas if exposed
to flames.)
• When carrying out piping connection, do not to let air substances other than the specified refrigerant enter the refrigeration cycle.
(Otherwise, it will cause lower performance, abnormal high pressure in the refrigeration cycle, explosion and injury.)
•
Make sure that the installation has a proper earth connection. Do not earth the unit to a utility pipe, arrester, or telephone grounding.
Incomplete grounding may cause electrical shock. (A high surge current from lightning or other sources may damage the air
conditioner.)
• An earth leakage circuit breaker may be required depending on the site condition to prevent electrical shock.
•
Disconnect the power supply before wiring, piping, or checking the unit.
•
Pay attention to the sharp edges of the air conditioner to avoid any injury.
•
During remote controller installation, ensure that the length of the wire between the indoor unit and remote controller is within
40 meters.
!
CAUTION
• Do not install the air conditioner in a place where there is a danger of exposure to flammable gas leakage. (If the gas leaks and
builds up around the unit, it may catch fire.)
• Establish drain piping according to the instructions in this manual. (Inadequate piping may cause flooding.)
• Tighten the flare nut according to the torque specifications with a torque wrench. (If the flare nut is tightened too hard, the flare nut
may crack after a long time and cause refrigerant leakage.)
INSTALLATION AND MAINTENANCE
HO2019291HA
11
EN