10T8Y1B
VRV-W IV System Air Conditioner
4P399208-1 – 2015.01
Installation and operation manual
3
WARNING
Install the air conditioner on a foundation strong
enough to withstand the weight of the unit.
A foundation of insufficient strength may result in the
equipment falling and causing injury.
Carry out the specified installation work after taking
into account strong winds, typhoons or earthquakes.
Failure to do so during installation work 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
laws and regulations and this installation manual.
An insufficient power supply capacity or improper
electrical construction may lead to electric shocks or
fire.
Make sure that all wiring is secured, the specified
wires are used, and that there is no strain on the
terminal connections or wires.
Improper connections or securing of wires may result
in abnormal heat buildup or fire.
When wiring the power supply and connecting the
remote controller wiring and transmission wiring,
position the wires so that the control box lid can be
securely fastened.
Improper positioning of the control box lid may result
in electric shocks, fire or the terminals overheating.
If refrigerant gas leaks during installation, ventilate the
area immediately.
Toxic gas may be produced if the refrigerant gas
comes into contact with fire.
After completing installation, check for refrigerant gas
leakage.
Toxic gas may be produced if the refrigerant gas leaks
into the room and comes into contact with a source of
fire, such as a fan heater, stove or cooker.
Be sure to switch off the unit before touching any
electrical parts.
Do not directly touch refrigerant that has leaked from
refrigerant pipes or other areas, as there is a danger
of frostbite.
Do not allow children to climb on the outdoor unit and
avoid placing objects on the unit.
Injury may result if the unit becomes loose and falls.
Be sure to earth the air conditioner.
Do not earth the unit to a utility pipe, lightning
conductor or telephone earth lead. Imperfect earthing
may result in electric shocks or fire.
A high surge current from lightning or other sources
may cause damage to the air conditioner.
Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result
in electric shocks or fire.
CAUTION
While following the instructions in this installation
manual, install drain piping to ensure proper drainage
and insulate piping to prevent condensation.
Improper drain piping may result in indoor water
leakage and property damage.
Install the indoor and outdoor units, power cord and
connecting wires at least 1 meter away from
televisions or radios to prevent picture interference
and noise.
(Depending on the incoming signal strength, a
distance of 1 meter may not be sufficient to eliminate
noise.)
Remote controller (wireless kit) transmitting distance
can be shorter than expected in rooms with electronic
fluorescent lamps (inverter or rapid start types).
Install the indoor unit as far away from fluorescent
lamps as possible.
Make sure to provide for adequate measures in order
to prevent small animals from using the outdoor unit
as a shelter.
Small animals making contact with electrical parts can
cause malfunctions, smoke or fire. Please instruct the
customer to keep the area around the unit clean.
Install in a machine room that is free of moisture.
The unit is designed for indoor use.
Do not install the air conditioner in the following
locations:
Where there is a high concentration of mineral oil
spray or vapour (e.g. a kitchen).
Plastic parts will deteriorate, parts may fall off and
water leakage could result.
Where corrosive gas, such as sulphurous acid
gas, is produced.
Corroding of copper pipes or soldered parts may
result in refrigerant leakage.
Near machinery emitting electromagnetic
radiation.
Electromagnetic radiation may disturb the
operation of the control system and result in a
malfunction of the unit.
Where flammable gas may leak, where there is
carbon fibre or ignitable dust suspensions in the
air, or where volatile flammables such as paint
thinner or gasoline are handled.
Operating the unit in such conditions may result in
fire.
The air conditioner is not intended for use in a
potentially explosive atmosphere.
CAUTION
The indoor unit is designed for R410A use. See the
catalogue for indoor unit models that can be connected.
(Normal operation is not possible when connecting units
that are originally designed for other refrigerants.)
