Daikin RWEYQ144PTJU [9/95] Safety considerations
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Daikin RWEYQ144PTJU [9/95] Safety considerations

Daikin RWEYQ144PTJU [9/95] Safety considerations
Installation Manual EDUS301214-N
8 Installation of Outside Units
1. SAFETY CONSIDERATIONS
Read these SAFETY CONSIDERATIONS for Installation carefully
before installing an air conditioner or heat pump. After completing the
installation, make sure that the unit operates properly during the star-
tup 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, electri-
cal 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.
DANGER
•
Refrigerant gas is heavier than air and replaces oxy-
gen. A massive leak will result in oxygen depletion,
especially in basements, and an asphyxiation hazard
will result in serious injury or death.
• Do not ground units to water pipes, gas pipes,
telephone wires, or lightning rods as incomplete
grounding will result a severe shock hazard resulting
in severe injury or death. Additionally, grounding to
gas pipes will result a gas leak and potential
explosion resulting in severe injury or death.
• If refrigerant gas leaks during installation, ventilate
the area immediately. Refrigerant gas will result in
producing toxic gas if it comes into contact with fire.
Exposure to this gas will result in 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
will result in 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 will result in
injuries or death by suffocation.
•
Only qualified personnel must carry out the installation
work. Installation must be done in accordance with this
installation manual. Improper installation could 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,
could result in oxygen deficiency.
• Use only specified accessories and parts for
installation work. Failure to use specified parts could
result in water leakage, electric shocks, fire, or the
unit falling.
• Install the air conditioner or heat pump on a
foundation strong enough that it can withstand the
weight of the unit. A foundation of insufficient
strength could result in the unit falling and causing
injuries.
• Take into account strong winds, typhoons, or
earthquakes when installing. Improper installation
could 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
could result in 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 could 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 could result in
electric shocks, fire, or the terminals overheating.
• Before touching electrical parts, turn off the unit.
• This equipment can be installed with a Ground-Fault
Circuit Breaker (GFCI). Although this is a recognized
measure for additional protection, with the earthing
system in North America, a dedicated GFCI is not
necessary.
• Securely fasten the unit terminal cover (panel). If the
terminal cover/panel is not installed properly, dust or
water may enter the condenser unit and could result
in fire or electric shock.
• When installing or relocating the system, keep the
refrigerant circuit free from substances other than
the specified refrigerant (R-410A) such as air. Any
presence of air or other foreign substance in the
refrigerant circuit could result in abnormal pressure
rise or rupture, resulting in injury.
• Do not change the setting of the protection devices.
If the pressure switch, thermal switch, or other
protection device is shorted and operated forcibly, or

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