Daikin SUPER MULTI NX CDXS18LVJU, Engineering Data

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Indoor Units EDUS121131
244 Installation Manual
3. Indoor Units
3.1 Safety Considerations
Read these SAFETY CONSIDERATIONS for Installation carefully before installing air conditioning equipment. After completing
the installation, make sure that the unit operates properly during the startup operation.
Instruct the customer on how to operate and maintain the unit. Inform customers that they should store this Installation Manual with
the Operation Manual for future reference.
Always use a licensed installer or contractor to install this product. Improper installation can result in water or refrigerant leakage,
electrical shock, fire, or explosion.
Meanings of DANGER, WARNING, CAUTION, and NOTE Symbols:
DANGER .............. Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING ............ Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION ............. Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It
may also be used to alert against unsafe practices.
NOTE ................... Indicates situations that may result in equipment or property-damage accidents only.
• Refrigerant gas is heavier than air and replaces oxygen. A massive leak can lead to oxygen depletion, especially in base-
ments, and an asphyxiation hazard could occur leading to serious injury or death.
• Do not ground units to water pipes, gas pipes, telephone wires, or lightning rods as incomplete grounding can cause
a severe shock hazard resulting in severe injury or death. Additionally, grounding to gas pipes could cause a gas leak
and potential explosion causing severe injury or death.
• If refrigerant gas leaks during installation, ventilate the area immediately. Refrigerant gas may produce toxic gas if it
comes into contact with fire. Exposure to this gas could cause severe injury or death.
• After completing the installation work, check that the refrigerant gas does not leak throughout the system.
• Do not install unit in an area where flammable materials are present due to risk of explosions that can cause serious
injury or death.
• Safely dispose all packing and transportation materials in accordance with federal/state/local laws or ordinances.
Packing materials such as nails and other metal or wood parts, including plastic packing materials used for
transportation may cause injuries or death by suffocation.
• Only qualified personnel must carry out the installation work. Installation must be done in accordance with this installa-
tion manual. Improper installation may result in water leakage, electric shock, or fire.
• When installing the unit in a small room, take measures to keep the refrigerant concentration from exceeding allowable
safety limits. Excessive refrigerant leaks, in the event of an accident in a closed ambient space, can lead to oxygen defi-
ciency.
• Use only specified accessories and parts for installation work. Failure to use specified parts may result in water
leakage, electric shocks, fire, or the unit falling.
• Install the air conditioner on a foundation strong enough that it can withstand the weight of the unit. A foundation of
insufficient strength may result in the unit falling and causing injuries.
• Take into account strong winds, typhoons, or earthquakes when installing. Improper installation 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 carried out by
qualified personnel according to local. state, and national regulations. An insufficient power supply capacity or
improper electrical construction may lead to electric shocks or fire.
• Make sure that all wiring is secured, that specified wires are used, and that no external forces act on the terminal
connections or wires. Improper connections or installation may result in fire.
• When wiring, position the wires so that the terminal box lid can be securely fastened. Improper positioning of the
terminal box lid may result in electric shocks, fire, or the terminals overheating.
C: 3P297301-2