AirStage ARUL14RLAV Manuale di installazione - Pagina 3
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2. ABOUT THE UNIT
2.1. Precautions for using R410A refrigerant
Do not introduce any substance other than the prescribed refrigerant into the refrigera-
tion 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 fl ame, it produces a toxic gas.
2.2. Special tool for R410A
To install a unit that uses R410A refrigerant, use dedicated tools and piping materials
that have been manufactured specifi cally 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
Pressure is huge and cannot be measured with a
conventional (R22) gauge. To prevent erroneous
mixing of other refrigerants, the diameter of each port
has been changed.
Gauge manifold
It is recommended to use a gauge manifold with a
high pressure display range 30in.Hg to 768 psi (–0.1
to 5.3 MPa) and a low pressure display range 30in.Hg
to 551 psi (–0.1 to 3.8 MPa).
To increase pressure resistance, the hose material
Charging hose
and base size were changed.
A conventional (R22) vacuum pump can be used by
installing a vacuum pump adapter.
Vacuum pump
Be sure that the pump oil does not back fl ow 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.
2.3. Accessories
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 to fall,
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.
Do not discard any accessories needed for installation until the installation work has been
completed.
Name and Shape
Operating Manual
Installation Manual
WARNING
WARNING
Changes
WARNING
Q'ty
Application
1
(This book)
1
Name and Shape
Installation template
Washer
Coupler heat insulation
(Large)
Coupler heat insulation
(Small)
Binder
Medium
Filter (Small)
Filter (Big)
Drain hose
Hose band
Drain hose insulation B
Grommet edging
Q'ty
Application
For positioning the indoor unit
1
For installing indoor unit
8
For indoor side pipe joint (Large pipe)
1
For indoor side pipe joint (Small pipe)
1
For power supply and transmission and
remote controller cable binding.
2
For fixing the coupler heat insulation.
Large
4
2
(AR7/9/
12/14)
2
(AR18)
For installing drain pipe
Φ 3/4 in. (19 mm) [I.D.],
1
Φ 1-1/16 in. (27 mm) [O.D.]
For installing drain hose
1
Insulates the drain hose
1
For wiring connecting port.
(Not use for U.S.A. and Canada)
1
En-2