En-3
2.3. 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.
For the additional amount, see the table below.
Pipe length
15 m
20 m
Rate
Additional refrigerant
None
+100 g
20 g/m
CAUTION
When adding refrigerant, add the refrigerant from the charging port at the completion
of work.
The maximum length of the piping is 20 m. If the units are further apart than this, correct
operation can not be guaranteed.
Between 15 m and 20 m, when using a connection pipe other than that in the table, charge
additional refrigerant with 20 g/1 m as the criteria.
2.4. Electrical requirements
The rated voltage of this product is
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.
Do not extend the power cable.
Perform wiring work in accordance with standards so that the air conditioner can be
operated safely and positively.
Install a leakage circuit breaker in accordance with the related laws and regulations
and electric company standards.
Always use a separate power supply line protected by a circuit breaker operating on all
wires with a distance between contact of 3 mm for this unit.
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.
Electric wire size and fuse capacity for each model are as follows:
Indoor unit capacity [Btu/h class]
9,000
12,000
14,000
Power supply cable [mm
2
]
1.5
1.5
MAX.
4.0
MIN.
3.5
Connection cable [mm
2
] 1.5
1.5
1.5
Fuse capacity [A]
15
15
20
• Use conformed cable with Type 60245 IEC 57.
• Install all electrical works in accordance to the national standard.
• Install the circuit breaker nearby the units.
3. SELECTING AN INSTALLATION LOCATION
With considering written conditions below, select an appropriate installing location in con-
sultation with the customer.
WARNING
Securely install the outdoor unit at a location that can withstand the weight of the unit.
Otherwise, the outdoor unit may fall and cause injury.
Be sure to install the outdoor unit as prescribed, so that it can withstand earthquakes
or strong winds. Improper installation can cause the unit to topple or fall, or other
accidents.
CAUTION
Do not install the outdoor 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. 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 containing equipment that generates electromagnetic interference. It will cause
the control system to malfunction, preventing the unit from operating normally.
• 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 that has heat sources, vapors, or the risk of the leakage of
fl
ammable gas in the
vicinity.
• Area where small animals may live. It may cause failure, smoke or
fi
re if small ani-
mals enter and touch internal electrical parts.
• Area where animals may urinate on the unit or ammonia may be generated.
In places where the outdoor temperature drops to 0
˚
C or lower, the drain water may
freeze and may stop up the drain or cause other outdoor unit trouble. Therefore take
measures so that the drain water will not freeze and clog the drain.
Set up the outdoor unit in a high place, and do not arrange the frame of installed stand
under the drain port. Because the water dropped from the drain port repeats freezing
and accumulating, and may block the drain port.
In the area with heavy snowfall, if the intake and outlet of outdoor unit is blocked with
snow, it might become dif
fi
cult to get warm and it is likely to cause of the break-down.
Construct a canopy or baf
fl
e board.
If children under 10 years old may approach the unit, take preventive measures so that
they cannot reach the 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 3m 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.
(8) Set up the unit in the place where has no in
fl
uence on dropping the drain water from
the outdoor unit.
[OUTDOOR UNIT]
10 cm or over
60 cm or over
10 cm or over
20 cm or over
25 cm or
over
INDOOR UNIT
• Do not directly install it on the ground,
otherwise it will cause failure.
• To obtain better operation efficiency,
when the outdoor unit is installed, be
sure to open the front and left side.
54 cm
32 cm
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