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1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
• Be sure to read “THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY” before installing the air conditioner.
• Be sure to observe the warnings and cautions specified here as they include important items related to safety.
• After reading this manual, be sure to keep it together with the OPERATING INSTRUCTIONS for future reference.
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Do not install the unit by yourself (user).
Incomplete installation could cause fire or electric shock, injury due to the unit
falling, or leakage of water. Consult the dealer from whom you purchased the
unit or a qualified installer.
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Perform the installation securely referring to the installation manual.
Incomplete installation could cause fire, electric shock, injury due to the unit
falling, or leakage of water.
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When installing the unit, use appropriate protective equipment and tools
for safety.
Failure to do so could cause injury.
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Install the unit securely in a place which can bear the weight of the unit.
If the installation location cannot bear the weight of the unit, the unit could fall
causing injury.
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Electrical work should be performed by a qualified, experienced electri-
cian, according to the installation manual. Be sure to use an exclusive
circuit. Do not connect other electrical appliances to the circuit.
If the capacity of the power circuit is insufficient or there is incomplete electrical
work, it could result in a fire or an electric shock.
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Do not damage the wires by applying excessive pressure with parts or
screws.
Damaged wires could cause fire or electric shock.
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Be sure to cut off the main power in case of setting up the indoor P.C.
board or wiring works.
Failure to do so could cause electric shock.
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Use the specified wires to connect the indoor and outdoor units securely
and attach the wires firmly to the terminal block connecting sections so
the stress of the wires is not applied to the sections. Do not extend the
wires, or use intermediate connection.
Incomplete connecting and securing could cause fire.
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Do not install the unit in a place where inflammable gas may leak.
If gas leaks and accumulates in the area around the unit, it could cause an explosion.
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Do not use intermediate connection of the power cord or the extension
cord and do not connect many devices to one AC outlet.
It could cause a fire or an electric shock due to defective contact, defective
insulation, exceeding the permissible current, etc.
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Be sure to use the parts provided or specified parts for the installation
work.
The use of defective parts could cause an injury or leakage of water due to a fire,
an electric shock, the unit falling, etc.
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When plugging the power supply plug into the outlet, make sure that
there is no dust, clogging, or loose parts in both the outlet and the plug.
Make sure that the power supply plug is pushed completely into the
outlet.
If there is dust, clogging, or loose parts on the power supply plug or the outlet, it
could cause electric shock or fire. If loose parts are found on the power supply
plug, replace it.
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Attach the electrical cover to the indoor unit and the service panel to the
outdoor unit securely.
If the electrical cover of the indoor unit and/or the service panel of the outdoor
unit are not attached securely, it could result in a fire or an electric shock due to
dust, water, etc.
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When installing, relocating, or servicing the unit, make sure that no
substance other than the specified refrigerant (R32) enters the refrigerant
circuit.
Any presence of foreign substance such as air can cause abnormal pressure
rise and may result in explosion or injury. The use of any refrigerant other than
that specified for the system will cause mechanical failure, system malfunction,
or unit breakdown. In the worst case, this could lead to a serious impediment to
securing product safety.
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Do not discharge the refrigerant into the atmosphere. If refrigerant leaks
during installation, ventilate the room. Check that the refrigerant does
not leak after installation has been completed.
If refrigerant leaks and comes in contact with fire or heating part of such a fan
heater, kerosene heater, or cooking stove, it will create harmful gas. Provide
ventilation in accordance with EN378-1.
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Check that the refrigerant gas does not leak after installation has been
completed.
If refrigerant gas leaks indoors, and comes into contact with the flame of a fan
heater, space heater, stove, etc., harmful substances will be generated.
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Use appropriate tools and piping materials for installation.
The pressure of R32 is 1.6 times more than R22. Not using appropriate tools or
materials and incomplete installation could cause the pipes to burst or injury.
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When pumping down the refrigerant, stop the compressor before discon-
necting the refrigerant pipes.
If the refrigerant pipes are disconnected while the compressor is running and the
stop valve is open, air could be drawn in and the pressure in the refrigeration cycle
could become abnormally high. This could cause the pipes to burst or injury.
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When installing the unit, securely connect the refrigerant pipes before
starting the compressor.
If the compressor is started before the refrigerant pipes are connected and when
the stop valve is open, air could be drawn in and the pressure in the refrigeration
cycle could become abnormally high. This could cause the pipes to burst or injury.
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Fasten a flare nut with a torque wrench as specified in this manual.
If fastened too tight, a flare nut may break after a long period and cause refrigerant
leakage.
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The unit shall be installed in accordance with national wiring regulations.
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Earth the unit correctly.
Do not connect the earth to a gas pipe, water pipe, lightning rod or telephone
earth. Defective earthing could cause electric shock.
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Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in electric shock or fire.
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When using a gas burner or other flame-producing equipment, com-
pletely remove all of the refrigerant from the air conditioner and ensure
that the area is well-ventilated.
If the refrigerant leaks and comes in contact in fire or heating part, it will create
harmful gas and there is risk of fire.
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Do not use means to accelerate the defrosting process or to clean, other
than those recommended by the manufacturer.
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The appliance shall be stored in a room without continuously operating
ignition sources (for example: open flames, an operating gas appliance
or an operating electric heater).
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Do not pierce or burn.
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Be aware that refrigerants may not contain an odour.
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Pipe-work shall be protected from physical damage.
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The installation of pipe-work shall be kept to a minimum.
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Compliance with national gas regulations shall be observed.
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Keep any required ventilation openings clear of obstruction.
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Do not use low temperature solder alloy in case of brazing the refrigerant
pipes.
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Servicing shall be performed only as recommended by the manufacturer.
WARNING
(Could lead to death, serious injury, etc.)
Required Tools for Installation
Phillips screwdriver
Level
Scale
Utility knife or scissors
Torque wrench
Wrench (or spanner)
4 mm hexagonal wrench
Flare tool for R32, R410A
Gauge manifold for R32, R410A
Vacuum pump for R32, R410A
Charge hose for R32, R410A
Pipe cutter with reamer
ENGLISH
CONTENTS
1. BEFORE INSTALLATION ............................................................
1
2. OUTDOOR UNIT INSTALLATION ...............................................7
3. FLARING WORK AND PIPE CONNECTION ...............................8
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN .........
9
5. PUMPING DOWN ......................................................................
11
1. BEFORE INSTALLATION
MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT
WARNING
(Risk of fire)
This unit uses a flammable refrigerant.
If refrigerant leaks and comes in contact with fire or heating part, it will create harmful gas and there is risk of fire.
Read the OPERATING INSTRUCTIONS carefully before operation.
Service personnel are required to carefully read the OPERATING INSTRUCTIONS and INSTALLATION MANUAL before operation.
Further information is available in the OPERATING INSTRUCTIONS, INSTALLATION MANUAL, and the like.
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