En-4
2. PRODUCT SPECIFICATION
2.1. Installation tools
Tool name
Change from R22 to R32 (R410A)
Gauge manifold
Pressure is high and cannot be measured with a R22
gauge. To prevent erroneous mixing of other refrigerants,
the diameter of each port has been changed.
It is recommended to use gauge with seals -0.1 to 5.3 MPa
(-1 to 53 bar) for high pressure.
-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.
Charge hose
To increase pressure resistance, the hose material and base
size were changed. (R32/R410A)
Vacuum pump
A conventional vacuum pump can be used by installing a
vacuum pump adapter.
(Use of a vacuum pump with a series motor is prohibited.)
Gas leakage detector
Special gas leakage detector for HFC refrigerant R410A or
R32.
■
Copper pipes
It is necessary to use seamless copper pipes and it is desirable that the amount of residual
oil is less than 40 mg/10 m. Do not use copper pipes having a collapsed, deformed or
discolored portion (especially on the interior surface). Otherwise, the expansion value or
capillary tube may become blocked with contaminants.
As an air conditioner using R32 (R410A) incurs pressure higher than when using R22, it is
necessary to choose adequate materials.
WARNING
• Do not use the existing (for R22) piping and
fl
are nuts.
If the existing materials are used, the pressure inside the refrigerant cycle will rise and
cause failure, injury, etc. (Use the special R32/R410A materials.)
• Use (re
fi
ll or replace with) speci
fi
ed refrigerant (R32) only. Use of unspeci
fi
ed refriger-
ant can cause product malfunction, burst, or injury.
• Do not mix any gas or impurities except speci
fi
ed refrigerant (R32). In
fl
ow of air or ap-
plication of unspeci
fi
ed material makes the internal pressure of the refrigerant cycle too
high, and may cause product malfunction, burst of piping, or injury.
• 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.
• Do not turn on the power until all work has been completed.
CAUTION
This manual describes how to install the indoor unit only. To install the outdoor unit or
branch box, (if any), refer to the installation manual included in each product.
2.2. 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 to fall, water leakage, electric shock, or
fi
re.
• Keep the Installation manual in a safe place and do not discard any other accessories
until the installation work has been completed.
The following installation accessories are supplied. Use them as required.
Name and Shape
Q’ty
Name and Shape
Q’ty
Operating manual
1
Cable tie (large)
4
Operating manual
(CD-ROM)
1
Cable tie (medium)
3
Installation manual
(This manual)
1
Filter (large)
[18 model]
2
Installation template
1
Filter (small)
[07, 09,12,14 model]
2
Washer
8
Drain hose
1
Coupler heat insulation (large)
1
Hose band
1
Coupler heat insulation(small)
1
Drain hose insulation B
1
Insulation
(for electrical wiring)
2
The following items are necessary to install this air conditioner. (The items are not includ-
ed with the air conditioner and must be purchased separately.)
Additional materials
Connection pipe assembly
Wall cap
Connection cable (4-conductor)
Saddle
Wall pipe
Drain hose
Decorative tape
Tapping screws
Vinyl tape
Putty
2.3. Pipe requirement
Model
Gas pipe size (thickness) [mm]
Luquid pipe size (thickness) [mm]
07, 09, 12,14
Ø 9.52 (0.80)
Ø 6.35 (0.80)
18
Ø 12.70 (0.80)
Ø 6.35 (0.80)
CAUTION
Refer to the installation manual for the outdoor unit for description of allowable pipe
length and height difference.
• Use pipe with water-resistant heat insulation.
CAUTION
• Wrap heat insulation around both gas pipe and liquid pipe.
No heat-insulation work or incorrect heat-insulation work may cause water leaks.
• In a reverse cycle model, use heat insulation with heat resistance above 120 °C.
• If expected humidity of the installation location of refrigerant pipes is higher than
70 %, wrap the heat insulation around the refrigerant pipes.
If the expected humidity is between 70 % and 80 %, use heat insulation that has a
thickness of 15 mm or more.
If the expected humidity is higher than 80 %, use heat insulation that has a thickness
of 20 mm or more.
• The use of thinner heat insulation than speci
fi
ed above, may cause a condensation
on the surface of the insulation.
• Use heat insulation with thermal conductivity of 0.045 W/(m•K) or less, at 20 °C.
2.4. Electrical requirement
The indoor unit is powered from the outdoor unit. Do not power indoor unit from separate
power source.
WARNING
Standard for electrical wiring and equipment differs in each country or region. Before you
start electrical working, con
fi
rm related regulations, codes, or standards.
Cable
Conductor size [
mm
2
]
Type
Remarks
Connection cable
1.5 (Min)
Type 60245 IEC 57
3 cable + Earth (Ground),
1 Ø 230 V
Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop is
2% or more.
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