Daikin VRV III REMQ72PBYD Engineering Data Download

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Installation

EDUS391004-N

Installation of Outdoor Units

Safety Considerations

1-1 Safety considerations for Installation

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 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.

DANGER

•

Refrigerant gas is heavier than air and replaces oxy-
gen. A massive leak can lead to oxygen depletion,
especially in basements, 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.

WARNING

•

Only qualified personnel must carry out the installation
work. Installation must be done in accordance with this
installation 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 deficiency.

•

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 or heat pump 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.

•

Before touching electrical parts, turn off the unit.

•

Securely fasten the outside unit terminal cover
(panel). If the terminal cover/panel is not installed
properly, dust or water may enter the outside unit
causing 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 can cause an 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

3P215731-10R