En-2
Thicknesses of Annealed Copper Pipes
Nominal diameter
Outer
diameter
Thickness
1/4 in
6.35 mm
0.8 mm
1/2 in
12.70 mm
0.8 mm
5/8 in
15.88 mm
1.0 mm
WARNING
To install a unit that uses R410A refrigerant, use dedicated tools and piping materials
that have been manufactured speci
fi
cally for R410A use. Because the pressure of
R410A refrigerant is approximately 1.6 times higher than 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.
2.3. Power
• The rated voltage
230 V AC 50 Hz.
WARNING
Before turning on the power, check if the voltage is within the 220 V -10 % to 240 V
+10 % range.
Always use a special branch circuit and install a special receptacle to supply power to
the room air conditioner.
Use a circuit breaker and receptacle matched to the capacity of the air conditioner.
Install a leakage circuit breaker in accordance with the related laws and regulations
and electric company standards.
The circuit breaker is installed in the permanent wiring. Always use a circuit that can
trip all the poles of the wiring and has an isolation distance of at least 3 mm between
the contacts of each pole.
CAUTION
The power source capacity must be the sum of the air conditioner current and the cur-
rent of other electrical appliances. When the current contracted capacity is insuf
fi
cient,
change the contracted capacity.
When the voltage is low and the air conditioner is dif
fi
cult to start, contact the power
company the voltage raised.
2.4. Electric requirement
• Electric wire size and fuse capacity:
Cable
Conductor size [mm
2
]
Type
Power supply cable
4.0
Type60245 IEC57
Connection cable
MAX.
2.5
Type60245 IEC57
MIN.
1.5
Breaker capacity (A)
18 type
24 type
25
30
2.5. Limitation of refrigerant piping length
CAUTION
The total maximum pipe lengths and height difference of this product are shown in the
table.
If the units are further apart than this, correct operation cannot be guaranteed.
Pipe length
Maximum height
(between indoor and outdoor)
MAX.
MIN.
30 m
5 m
20 m
2.6. Additional charge
Refrigerant suitable for a piping length of 15 m is charged in the outdoor unit at the factory.
When the piping is longer than 15 m, additional charging is necessary.
Between 15 m and 30 m, when using a connection pipe other than that in the table, charge
additional refrigerant with 20 g/1 m as the criteria.
For the additional amount, see the table below.
Pipe length
15 m
20 m
25 m
30 m
Rate
Additional refrigerant
None
+100 g
+200 g
+300 g
20 g/m
CAUTION
When adding refrigerant, add the refrigerant from the charging port at the completion
of work.
2.7. Accessories
The following installation accessories are supplied.
Use them as required.
Drain pipe
1
Drain cap
3
Installation manual
1
One set of following parts are necessary installation of this product.
Name
Connection pipe assembly
Connection cable
Wall pipe
Decorative tape
Vinyl tape
Wall cap
Saddle
Drain hose
Tapping screws
Sealant
3. SELECTING THE MOUNTING POSITION
• Decide the mounting position with the customer as follows.
• Do not set to a place where there is oily smoke, oil is used in the factory, the unit can
contact sea breeze, sul
fi
de gases will be generated in the hot spring area, corrosive
gases will be generated, animal may urine on the unit and ammonia will be generated
and a dusty place.
3.1. Outdoor unit
(1) If possible, do not install the unit where it will be exposed to direct sunlight.
(If necessary, Install a blind that does not interfere with the air
fl
ow.)
(2) Do not install the unit where a strong wind blows or where it is very dusty.
(3) Do not install the unit where people pass.
(4) Take you neighbors into consideration so that they are not disturbed by air blowing into their
windows or by noise.
(5) Provide the space shown in
fi
gure so that the air
fl
ow is not blocked. Also for ef
fi
cient
operation, leave open three of the four directions front, rear, and both sides.
(6) Install the unit where keep away more than 3 m from the antenna of TV set and Radio.
(7) Outdoor unit should be set to a place where both drainage and itself will not be
affected when heating.
WARNING
Install at a place that can withstand the weight of the outdoor units and install positively
so that the units will not topple or fall.
CAUTION
Do not install where there is the danger of combustible gas leakage.
Do not install near heat sources.
If children under 10 years old may approach the unit, take preventive measures so that
they cannot reach the unit.
4. INSTALLATION DIAGRAM
4.1.1. Single outdoor unit installation
When the upward area is open
(Unit:
cm)
(1) Obstacles at rear only
10 or more
(2) Obstacles at rear and sides only
10 or more
10 or
more
25 or more
(3) Obstacles at front only
60 or more
(4) Obstacles at front and rear only
60 or more
10 or more
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