– 5 –
Installation Manual
EN-9
EN-10
• Once the repair work has been completed, check for refrigerant
leaks, and check the insulation resistance and water drainage. Then
perform a trial run to check that the air conditioner is running properly.
• This appliance is intended to be used by expert or trained users in
shops, in light industry, or for commercial use by lay persons.
Selection of installation location
• If you install the unit in a small room, take appropriate measures to
prevent the refrigerant from exceeding the limit concentration even
if it leaks. Consult the dealer from whom you purchased the air
conditioner when you implement the measures. Accumulation of
highly concentrated refrigerant may cause an oxygen deficiency
accident.
• Do not install the air conditioner in a location that may be subject to
a risk of exposure to a combustible gas. If a combustible gas leaks
and becomes concentrated around the unit, a fire may occur.
• When transporting the air conditioner, wear shoes with additional
protective toe caps.
• When transporting the air conditioner, do not take hold of the bands
around the packing carton. You may injure yourself if the bands
should break.
• Do not place any combustion appliance in a place where it is
directly exposed to the wind of air conditioner, otherwise it may
cause imperfect combustion.
• Places where the operation sound of the outdoor unit may cause a
disturbance. (Especially at the boundary line with a neighbour,
install the air conditioner while considering the noise.)
• When transporting the air conditioner, use a forklift and when
moving the air conditioner by hand, move the unit with 5 people.
Installation
• Follow the instructions in the installation manual to install the air
conditioner. Failure to follow these instructions may cause the
product to fall down or topple over or give rise to noise, vibration,
water leakage, etc.
• The designated bolts (M12) and nuts (M12) for securing the
outdoor unit must be used when installing the unit.
• Install the outdoor unit property in a location that is durable enough
to support the weight of the outdoor unit. Insufficient durability may
cause the outdoor unit to fall, which may result in injury.
• Install the unit in the prescribed manner for protection against
strong wind and earthquake. Incorrect installation may result in the
unit falling down, or other accidents.
• Be sure to fix the screws back which have been removed for
installation or other purposes.
Refrigerant piping
• Install the refrigerant pipe securely during the installation work
before operating the air conditioner. If the compressor is operated
with the valve open and without refrigerant pipe, the compressor
sucks air and the refrigeration cycles is over pressurized, which
may cause a injury.
• Tighten the flare nut with a torque wrench in the specified manner.
Excessive tighten of the flare nut may cause a crack in the flare nut
after a long period, which may result in refrigerant leakage.
• Ventilate the air if the refrigerant gas leaks during installation. If the
leaked refrigerant gas comes into contact with fire, toxic gas may
be produced.
• After installation work, check the refrigerant gas does not leak. If
the refrigerant gas leaks in the room, poisonous gas generates
when gas touches to fire such as fan heater, stove or cocking stove
though the refrigerant gas itself is innocuous.
• When the air conditioner has been installed or relocated, follow the
instructions in the Installation Manual and purge the air completely
so that no gases other than the refrigerant gas will be mixed in the
refrigerating cycle. Failure to purge the air completely may cause
the air conditioner to malfunction.
• Nitrogen gas must be used for the airtight test.
1FAN_IM_DHV0100301-00_EN.book Page 5 Saturday, November 4, 2017 2:39 PM
