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1. BEFORE INSTALLATION
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
• Be sure to read these safety precautions and instructions.
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• After reading this manual, be sure to store it with the OPERATING INSTRUCTIONS for future reference.
• Please report to your supply authority or obtain their consent before connecting this equipment to the power supply system.
1-2. SELECTING THE INSTALLATION LOCATION
CAUTION
(Could lead to serious injury when operated incorrectly.)
Required Tools for Installation
Phillips screwdriver
Level
Scale
Utility knife or scissors
3 in. (75 mm) hole saw
Torque wrench
Wrench (or spanner)
5/32 in. (4 mm) hexagonal
wrench
Flare tool for R410A
Gauge manifold for R410A
Vacuum pump for R410A
Charge hose for R410A
Pipe cutter with reamer
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Do not install the unit by yourself (user).
Improper or incomplete installation could cause
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dealer from whom you purchased the unit.
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Follow the instructions detailed in the installa-
tion manual.
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shock, injury due to the unit falling, or leakage of
water.
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Install the unit securely in a place that 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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Perform electrical work according to the instal-
lation manual and be sure to use an exclusive
circuit. Do not connect other electrical appliances
to the circuit.
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there is incomplete electrical work, it could result
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Ground the unit correctly.
Do not connect the ground wire to a gas pipe,
water pipe, lightning rod or telephone ground.
Defective grounding could cause electric shock.
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Do not damage the wires.
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Be sure to shut off the main power when setting
up the indoor P.C. board or wiring.
Failure to do so could cause electric shock.
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to avoid applying stress to the terminal block.
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gas may leak.
If gas leaks and accumulates 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.Do not connect many
devices to one AC outlet.
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installation work.
The use of defective parts could cause an injury
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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, blockage,
or loose parts both in the outlet and on the plug.
Verify that the power supply plug is completely
in the outlet.
If there is dust, blockage, or loose parts on the power
supply plug or the outlet, it could cause electric shock
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plug, replace it.
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Securely attach the electrical cover to the indoor
unit and the service panel to the outdoor unit.
If the electrical cover of the indoor unit and/or the
service panel of the outdoor unit are not attached
securely, dust, water, etc. could collect in the unit
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When installing or relocating the unit, make sure
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-
frigerant (R410A) enters the refrigerant circuit.
Any foreign substances in the refrigerant circuit
can cause abnormal pressure rise or an explo-
sion.
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Do not discharge the refrigerant into the at-
mosphere. Check that the refrigerant gas does
not leak after installation has been completed.
If refrigerant leaks during installation, ventilate
the room.
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gas could be generated.
If refrigerant gas leaks indoors, and comes into
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heater, stove, etc., harmful gases will be gener-
ated.
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Use appropriate tools and piping materials for
installation.
The pressure of R410A is 1.6 times higher than
R22. Not using the appropriate tools and materi-
als, or improper installation could cause the pipes
to burst causing an injury.
N
When pumping down the refrigerant, stop the
compressor before disconnecting the refriger-
ant 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,
causing the pipes to burst.
N
When installing the unit, securely connect the
refrigerant pipes before starting the compres-
sor.
If the compressor is started before the refrigerant
pipes are connected and the stop valve is open,
air could be drawn in and the pressure in the
refrigeration cycle could become abnormally high,
causing the pipes to burst.
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cause refrigerant leakage.
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Install the unit according to national wiring
regulations.
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Depending on the installation area, install a
Ground Fault Interrupt (GFI) circuit breaker.
If the Ground Fault Interrupt (GFI) circuit breaker
is not installed, an electric shock could occur.
N
Perform the drainage/piping work securely ac-
cording to the installation manual.
If there is defect in the drainage/piping work,
water could drip from the unit, and damage
household items.
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of the outdoor unit.
This could cause injury.
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Do not install the outdoor unit where small
animals may live.
If small animals enter the unit and damage its
electrical parts, it could cause a malfunction,
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the unit clean.
INDOOR UNIT
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• Where cool air spreads over the entire room.
• On a rigid wall to reduce the possibility of vibration.
• Where it is not exposed to direct sunlight.
• Where it can be easily drained.
• At a distance 3 ft. (1 m) or more away from a TV
and radio. Operation of the air conditioner may in-
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be required for the affected device.
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and incandescent lights (so the infrared remote
control can operate the air conditioner normally).
•
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easily.
REMOTE CONTROLLER
• Where it is convenient to operate and easily vis-
ible.
• Where children cannot easily touch it.
• Select a position about 4 ft. (1.2 m) above the
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from that position are received by the indoor unit
(‘beep’ or ‘beep beep’ receiving tone sounds).
Then, attach remote controller holder to a pillar or
wall and install wireless remote controller.
Note:
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used, the signal from the wireless remote controller
may not be received.
Note:
Avoid the following places for installation where air
conditioner trouble is liable to occur.
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• Where there is an excessive amount of machine
oil in the air.
• Salty places such as the seaside.
• Where sulfide gas is generated such as a hot
spring.
• Where there is high-frequency or wireless equip-
ment.
WARNING
(Could lead to death or serious injury.)
ENGLISH
When installing multi units, refer to the
installation manual of the multi unit for
outdoor unit installation.
CONTENTS
1. BEFORE INSTALLATION ..................................1
2. INDOOR UNIT INSTALLATION .........................3
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TEST RUN .........................................................7
4. PUMPING DOWN ..............................................7
