AirStage ASUB18RLAV, Installation Manual

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En-2
2. ABOUT THE UNIT
1
2.1. Precautions for using R410A refrigerant
WARNING
Do not introduce any substance other than the prescribed refrigerant into the
refrigeration cycle. If air enters the refrigeration cycle, the pressure in the refrigeration
cycle will become abnormally high and cause the piping to rupture.
If there is a refrigerant leak, make sure that it does not exceed the concentration limit.
If a refrigerant leak exceeds the concentration limit, it can lead to accidents such as
oxygen starvation.
Do not touch refrigerant that has leaked from the refrigerant pipe connections or other
area. Touching the refrigerant directly can cause frostbite.
If a refrigerant leak occurs during operation, immediately vacate the premises and
thoroughly ventilate the area. If the refrigerant comes in contact with a flame, it
produces a toxic gas.
]1
2.2. Special tool for R410A
WARNING
To install a unit that uses R410A refrigerant, use dedicated tools and piping materials
that have been manufactured specifically for R410A use. Because the pressure
of R410A refrigerant is approximately 1.6 times higher than the R22, failure to use
dedicated piping material or improper installation can cause rupture or injury.
Furthermore, it can cause serious accidents such as water leakage, electric shock, or
fi re.
Tool name Changes
Gauge manifold
The pressure in the refrigerant system is extremely high
and cannot be measured with a conventional (R22)
gauge. To prevent erroneous mixing of other refrigerants,
the diameter of each port has been changed. It is recom-
mended to use a gauge manifold with a high pressure
display range of 30 in.Hg to 768 psi (–0.1 to 5.3 MPa)
and a low pressure display range of 30 in.Hg to 551 psi
(–0.1 to 3.8 MPa).
Charging hose
To increase pressure resistance, the hose material and
base size were changed.
(The charging port thread diameter for R410A is 1/2 UNF
20 inch.)
Vacuum pump
A conventional (R22) vacuum pump can be used by install-
ing a vacuum pump adapter.
Be sure that the pump oil does not backflow into the
system. Use one capable for vacuum suction of 5 Torr,
–755 mmHg (–100.7 kPa).
Gas leakage detector
Special gas leakage detector for R410A refrigerant.
]1
2.3. Accessories
WARNING
For installation purposes, be sure to use the parts supplied by the manufacturer or
other prescribed parts. The use of non-prescribed parts can cause serious accidents
such as the unit falling, water leakage, electric shock, or
fi re.
• The following installation parts are furnished. Use them as required.
• Keep the Installation Manual in a safe place and do not discard any other accessories
until the installation work has been completed.
Name and Shape Q’ty Application
Operation Manual
1
Installation Manual
1
(This book)
Wall hook bracket
1
For indoor unit installation
Cloth tape
1
For indoor unit installation
Name and Shape Q’ty Application
Tapping screw (Big) (M4 × 25 mm)
8
For wall hook bracket installa-
tion
Air cleaning fi lter
2
Air cleaning fi lter frame
2
Drain hose Insulation
1
For installing drain hose
Connecting cable
2
For wired remote controller
cable connection, and simple
remote controller cable
connection.
Adapter cable (Remote controller)
2
Cable tie
1
For transmission and remote
controller cable binding.
Grommet edging
1
For wiring connecting port.
(Not use for U.S.A.)
]1
2.4. Optional parts
The following options are available.
• External output wire (P/N 9379529006)
• External input (voltage) wire (P/N 9368779016)
• External input (no voltage) wire (P/N 9368779009)
3. INSTALLATION WORK
Correct initial installation location is important because it is dif fi cult to move unit after it is
installed.
]1
3.1. Selecting an installation location
Decide the mounting position together with the customer as follows.
WARNING
Select installation locations that can properly support the weight of the indoor unit.
Install the units securely so that they do not topple or fall.
CAUTION
Do not install the indoor unit in the following areas:
• Area with high salt content, such as at the seaside. It will deteriorate metal parts,
causing the parts to fail or the unit to leak water.
• Area fi lled with mineral oil or containing a large amount of splashed oil or steam,
such as a kitchen. It will deteriorate plastic parts, causing the parts to fail or the unit
to leak water.
• Area that generates substances that adversely affect the equipment, such as
sulfuric gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed
joints to corrode, which can cause refrigerant leakage.
• Area that can cause combustible gas to leak, contains suspended carbon fi bers or
fl ammable dust, or volatile in fl ammables such as paint thinner or gasoline. If gas
leaks and settles around the unit, it can cause a fi re.
• Area where animals may urinate on the unit or ammonia may be generated.
Do not use the unit for special purposes, such as storing food, raising animals,
growing plants, or preserving precision devices or art objects.
It can degrade the quality of the preserved or stored objects.
Do not install where there is the danger of combustible gas leakage.
Do not install the unit near a source of heat, steam, or fl ammable gas.
Install the unit where drainage does not cause any trouble.
Install the indoor unit, outdoor unit, power supply cable, transmission cable, and
remote controller cable at least 40 in. (1 m) away from a television or radio receivers.
The purpose of this is to prevent TV reception interference or radio noise. (Even if
they are installed more than 40 in. (1 m) apart, you could still receive noise under
some signal conditions.)
If children under 10 years old may approach the unit, take preventive measures so
that they cannot reach the unit.
Take precautions to prevent the unit from falling.
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