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SAFETY PRECAUTIONS
11
Be sure to read this Manual thoroughly before installation.
The warnings and precautions indicated in this Manual contain important information
pertaining to your safety. Be sure to observe them.
Hand this Manual, together with the Operating Manual, to the customer. Request the
customer to keep them on hand for future use, such as for relocating or repairing the unit.
After installation, explain correct operation to the customer, using the operating manual.
WARNING
This mark indicates procedures which, if improperly performed,
might lead to the death or serious injury of the user.
Never touch electrical components immediately after the power supply has been turned
off. Electrical shock may occur. After turning off the power, always wait 5 minutes or
more before touching electrical components.
Request your dealer or a professional installer to install the indoor unit in accordance
with this Installation Manual. An improperly installed unit can cause serious accidents
such as water leakage, electric shock, or fire. If the indoor unit is installed in disregard
of the instructions in the Installation Manual, it will void the manufacturer’s warranty.
Do not turn ON the power until all work has been completed. Turning ON the power
before the work is completed can cause serious accidents such as electric shock or fire.
If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant
comes in contact with a flame, it produces a toxic gas.
Installation work must be performed in accordance with national wiring standards by
authorized personnel only.
Do not use this equipment with air or any other unspecified refrigerant in the refrigerant
lines.
Excess pressure can cause a rupture.
During installation, make sure that the refrigerant pipe is attached firmly before you run
the compressor.
Do not operate the compressor under the condition of refrigerant piping not attached
properly with 2-way or 3-way valve open. This may cause abnormal pressure in the
refrigeration cycle that leads to rupture and even injury.
When installing and relocating the air conditioner, do not mix gases other than the
specified refrigerant (R410A) to enter the refrigerant cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to
an abnormally high value and cause rupture, injury, etc.
For the air conditioner to operate satisfactorily, install it as outlined in this installation
manual.
Connect the indoor unit and outdoor unit with the air conditioner piping and cable
available standards parts.
This installation manual describes the correct connections using the installation set
available from our standard parts.
Also, do not use an extension cable.
Do not purge the air with refrigerants but use a vacuum pump to vacuum the
installation.
There is not extra refrigerant in the outdoor unit for air purging.
Use a vacuum pump for R410A exclusively.
Using the same vacuum pump for different refrigerants may damage the vacuum pump
or the unit.
Use a clean gauge manifold and charging hose for R410A exclusively.
During the pump-down operation, make sure that the compressor is turned off before
you remove the refrigerant piping.
Do not remove the connection pipe while the compressor is in operation with 2 way or
3 way valve open. This may cause abnormal pressure in the refrigeration cycle that
leads to rupture and even injury.
CAUTION
This mark indicates procedures which, if improperly performed,
might possibly result in personal harm to the user, or damage
to property.
Read carefully all security information before use or install the air conditioner.
Do not attempt to install the air conditioner or a part of the air conditioner by yourself.
This unit must be installed by qualified personnel with a capacity certificate for handling
refrigerant fluids. Refer to regulation and laws in use on installation place.
The installation must be carried out in compliance with regulations in force in the place
of installation and the installation instructions of the manufacturer.
This unit is part of a set constituting an air conditioner. It must not be installed alone or
with non-authorized by the manufacturer.
Always use a separate power supply line protected by a circuit breaker operating on all
wires with a distance between contact of 3mm for this unit.
The unit must be correctly grounded and the supply line must be equipped with a
differential breaker in order to protect the persons.
The units are not explosion proof and therefore should not be installed in explosive
atmosphere.
This unit contains no user-serviceable parts. Always consult authorized service
personnel to repairs.
When moving, consult authorized service personnel for disconnection and installation
of the unit.
Children should be monitored to ensure they do not play with the device.
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety. Children should be supervised to ensure that they
do not play with the appliance.
ABOUT THE PRODUCT
21
Precautions for using R410A refrigerant
21 11
WARNING
The basic installation work procedures are the same as conventional refrigerant models.
However, pay careful attention to the following points:
Since the working pressure is 1.6 times higher than that of conventional refrigerant
•
(R22) models, some of the piping and installation and service tools are special. (See
the table below.)
Especially, when replacing a conventional refrigerant (R22) model with a new
refrigerant R410A model, always replace the conventional piping and flare nuts with
the R410A piping and flare nuts.
Models that use refrigerant R410A have a different charging port thread diameter
•
to prevent erroneous charging with conventional refrigerant (R22) and for safety.
Therefore, check beforehand. [The charging port thread diameter for R410A is
1/2 UNF 20 threads per inch.]
Be careful that foreign matter (oil, water, etc.) does not enter the piping than with
•
refrigerant models. Also, when storing the piping, securely seal the openings by
pinching, taping, etc.
When charging the refrigerant, take into account the slight change in the composition
•
of the gas and liquid phases. And always charge from the liquid phase where
refrigerant composition is stable.
Contents
SAFETY PRECAUTIONS
1.
……………………………………………………………… 1
ABOUT THE PRODUC
2.
T
Precautions for using R410A refrigerant
2.1.
………………………………………… 1
Special tools for R410A
2.2.
…………………………………………………………… 2
Accessories
2.3.
………………………………………………………………………… 2
System configuration
2.4.
……………………………………………………………… 2
INSTALLATION WOR
3.
K
Selecting an installation location
3.1.
………………………………………………… 3
Drain installation
3.2.
…………………………………………………………………… 3
Installation dimensions
3.3.
…………………………………………………………… 3
Transportation of the unit
3.4.
………………………………………………………… 4
Installation of the unit
3.5.
……………………………………………………………… 4
PIPE INSTALLATION
4.
I
Flare connection (pipe connection)
4.1.
……………………………………………… 4
ELECTRICAL WIRIN
5.
G
The precautions of electrical wiring
5.1.
……………………………………………… 5
Electrical requirement
5.2.
……………………………………………………………… 6
Unit wiring
5.3.
…………………………………………………………………………… 6
Connection diagrams
5.4.
……………………………………………………………… 6
Outdoor unit
5.5.
………………………………………………………………………… 6
PIPE INSTALLATION I
6.
I
Vacuum
6.1.
……………………………………………………………………………… 7
Additional charging
6.2.
………………………………………………………………… 7
POWER
7.
…………………………………………………………………………………… 8
TEST RU
8.
N
Make a TEST RUN in accordance with the installation Manual
8.1.
for the indoor unit …………………………………………………………………… 8
Outdoor unit LEDS
8.2.
………………………………………………………………… 8
PUMP DOWN
9.
……………………………………………………………………………… 8
INSTALLATION MANUAL
PART NO. 9374872121-03
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