─
10
─
6
Installation
■
Location
• Avoid locations where inside the ceiling is used as a route for fresh air.
• Install the fresh air intake unit considering a discharge port position. The fresh air intake unit has a different
discharge temperature compared with the indoor unit for air conditioner.
• Avoid installing near machines emitting high frequency waves.
• Not suitable for chemical plants such as lique
fi
ed carbon dioxide refrigerant plants.
• Do not install the air conditioner in locations where iron or other metal dust is present. If iron or other metal dust
adheres to or collects on the interior of the air conditioner, it may spontaneously combust and start a
fi
re.
• A failure may occur in certain locations such as the following:
• Areas with large amount of oil droplets (including machine oil) or vapors
• Salty areas near oceans, etc.
• Hot springs emitting sul
fi
dizing gas, etc.
• Heavily acidic or alkaline places.
Special maintenance or parts are required for use in the above places. For details, contact the dealer where you
purchased the product.
• Leave an enough space around the air intake and discharge of the outdoor unit so that the ventilation is not
restricted.
• Avoid places where strong wind may blow against the air intake and discharge of the outdoor unit.
• Attach a snow stand, snow hood, etc. to the outdoor unit for use in snowfall areas. For details, contact the dealer
where you purchased the product.
• Make sure drain water from the outdoor unit is emitted into places with good drainage.
• Make sure the long life pre
fi
lter and high-ef
fi
ciency
fi
lter are installed in the
fi
lter chamber. If the long life pre
fi
lter
and high-ef
fi
ciency
fi
lter are not attached, heat exchangers etc. clogged with dust can result in water leakage.
Attach the long life per
fi
lter and high-ef
fi
ciency
fi
lter because dust can also get into the area being air conditioned.
• Keep a distance of at least 1 m between the air conditioner / remote controller and a TV or radio. Failure to
observe this precaution may cause visual disturbance or noise.
• Leave a distance of at least 1.5 m between the air discharge and a
fi
re alarm. If this precaution is not observed,
the alarm may not work properly or detect
fi
re in case of
fi
re.
■
Be careful of operation sounds
• Locate the unit in a place secure enough so that the sounds and vibrations do not increase.
• If something is placed near the air discharge of the outdoor unit, noise may increase.
• Be careful not to disturb your neighbors with cool / warm air or noise coming from the air discharge of the
outdoor unit.
7
Notes on operations and performance
■
Check before operation
• Turn on the power switch at least 12 hours before
starting operation.
• Make sure the earth wire is securely connected.
• Make sure the air
fi
lter is attached to the indoor unit.
■
Defrosting during heating
• If frost falls on the outdoor unit during heating,
defrosting is automatically performed
(for approximately 2 - 10 minutes) to increase
the heating effect.
• The fan of the indoor unit is stopped during
defrosting.
■
3-minute pretection
The outdoor unit will not operate for approximately
3 minutes after the air conditioner has been
immediately restarted after stopping, or the power
switch has been turned on. This is to protect the
system
■
Power failure
• In the case of a power failure, all operations stop.
• To resume operations, push the ON/OFF button.
■
Protective device
(High pressure switch)
The high pressure switch stops the air conditioner
automatically when excessive load is applied to the air
conditioner.
If the protective device activates, the unit’s running
stops and the operation lamp blinks.
When the protective device activates, the indicator
and the check code are displayed on the remote
controller.
The protective device may activate in the following
cases:
During cooling
• When the air intake or air discharge of the outdoor
unit is blocked.
• When strong wind blows continuously against the air
discharge of the outdoor unit.
During heating (for heat-pump model only)
• When dust or dirt is excessively adhered to the air
fi
lter of the indoor unit.
• When the air discharge of the indoor unit is blocked.
NOTE
When the protective device activates, turn off the
power switch, remove the cause, and then restart
running.
■
Cooling / Heating operations
Each unit can be controlled individually. However,
indoor units connected to the same outdoor unit cannot
perform cooling and heating simultaneously.
When you attempt simultaneous operation, indoor
units performing cooling are stopped, and the running
preparation indicator
is displayed on the remote
controller.
An indoor unit performing heating continues running.
When you attempt an operation without the con
fi
gured
settings, the running preparation indicator
is
displayed on the remote controller and operation stops.
If operation is
fi
xed to cooling or heating by the air
conditioner administrator, only the con
fi
gured settings
apply to the operation.
■
Characteristics of heating
When the outside temperature increases, the outdoor
unit may stop.
19-EN
20-EN