2
CAUTION
(Could lead to serious injury in particular environments when operated incorrectly.)
n
Install an earth leakage breaker depending on the installation place.
If an earth leakage breaker is not installed, it could cause electric shock.
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Perform the drainage/piping work securely according to the installation
manual.
If there is defect in the drainage/piping work, water could drop from the unit,
soaking and damaging household goods.
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Do not touch the air inlet or the aluminum fins of the outdoor unit.
This could cause injury.
n
Do not install the outdoor unit where small animals may live.
If small animals enter and touch the electric parts inside the unit, it could cause a
malfunction, smoke emission, or fire. Also, advise user to keep the area around
the unit clean.
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Do not operate the air conditioner during interior construction and finish
-
ing work, or while waxing the floor.
Before operating the air conditioner, ventilate the room well after such work is
performed. Otherwise, it may cause volatile elements to adhere inside the air
conditioner, resulting in water leakage or scattering of dew.
1-2. SPECIFICATIONS
1-3. SELECTING OPTIONAL DIFFERENT-DIAMETER JOINTS
If the diameter of connection pipe does not match the port size of outdoor unit, use optional different-diameter joints according to the following table.
(Unit: mm (inch))
Port size of outdoor unit
Optional different-diameter joints
(port size of outdoor unit → diameter of connection pipe)
MXZ-2F52VGD
MXZ-3F54VGD
MXZ-4F71VGD
Liquid / Gas
6.35 (1/4) → 9.52 (3/8) : PAC-493PI
9.52 (3/8) → 12.7 (1/2) : MAC-A454JP-E
9.52 (3/8) → 15.88 (5/8) : PAC-SG76RJ-E
12.7 (1/2) → 9.52 (3/8) : MAC-A455JP-E
12.7 (1/2) → 15.88 (5/8) : MAC-A456JP-E
Refer to the installation manual of indoor unit for the diameter of connec-
tion pipe of indoor unit.
—
—
A UNIT
6.35 (1/4) / 12.7 (1/2)
A - B UNIT
A - C UNIT
B - D UNIT
6.35 (1/4) / 9.52 (3/8)
*1 Connect to the power switch which has a gap of 3 mm or more when open to interrupt the
source power phase. (When the power switch is shut off, it must interrupt all phases.)
*2 Use wires in conformity with design 60245 IEC 57. Use the indoor/outdoor connecting wire
in conformity with the wire specifications specified in the installation manual of the indoor
unit.
*3 Never use pipes with thickness less than specified. The pressure resistance will be insuf
-
ficient.
*4 Use a copper pipe or a copper-alloy seamless pipe.
*5 Be careful not to crush or bend the pipe during pipe bending.
*6 Refrigerant pipe bending radius must be 100 mm or more.
*7 Insulation material : Heat resisting foam plastic 0.045 specific gravity
*8 Be sure to use the insulation of specified thickness. Excessive thickness may cause incor
-
rect installation of the indoor unit and insufficient thickness may cause dew drippage.
*9 If the outdoor unit is installed higher than the indoor unit, max. height difference is reduced
to 10 m.
1-4. SELECTING THE INSTALLATION LOCATION
• Where it is not exposed to strong wind.
• Where airflow is good and dustless.
• Where rain or direct sunshine can be avoided as much as possible.
• Where neighbours are not annoyed by operation sound or hot air.
• Where rigid wall or support is available to prevent the increase of opera-
tion sound or vibration.
• Where there is no risk of combustible gas leakage.
• When installing the unit, be sure to secure the unit legs.
• Where it is at least 3 m away from the antenna of TV set or radio. Opera-
tion of the air conditioner may interfere with radio or TV reception in areas
where reception is weak. An amplifier may be required for the affected
device.
• Install the unit horizontally.
• Please install it in an area not affected by snowfall or blowing snow. In
areas with heavy snow, please install a canopy, a pedestal and/or some
baffle boards.
Note:
It is advisable to make a piping loop near outdoor unit so as to reduce
vibration transmitted from there.
Model
Power supply *1
Wire specifications *2
Pipe length and height difference
*3, *4, *5, *6, *7, *8
Rated
Voltage
Frequency
Breaker
capacity
Power
supply
Indoor/outdoor
connecting wire
Max. pipe length
per indoor unit / for
multi-system
Max. height
difference *9
Max. no. of bends
per indoor unit / for
multi system
MXZ-2F52VGD
220 V - 60 Hz
230 V - 50 Hz
15 A
3-core
2.5 mm
2
4-core
1.0/1.5 mm
2
20 m / 40 m
15 m
20 / 40
MXZ-3F54VGD
20 A
25 m / 50 m
25 / 50
MXZ-4F71VGD
25 m / 60 m
25 / 60
Model
Maximum amount of
refrigerant charge
Factory-charged
refrigerant amount
MXZ-2F52VGD
MXZ-3F54VGD
MXZ-4F71VGD
2.4 kg
2.4 kg
Note:
When operating the air conditioner in low outside temperature, be sure
to follow the instructions described below.
• Never install the outdoor unit in a place where its air inlet/outlet side
may be exposed directly to wind.
• To prevent exposure to wind, install the outdoor unit with its air inlet
side facing the wall.
•
To prevent exposure to wind, it is recommended to install a baffle
board on the air outlet side of the outdoor unit.
Avoid the following places for installation where air conditioner trouble
is liable to occur.
• Where flammable gas could leak.
• Where there is much machine oil.
• Where oil is splashed or where the area is filled with oily smoke
(such as cooking areas and factories, in which the properties of
plastic could be changed and damaged).
• Salty places such as the seaside.
• Where sulfide gas is generated such as a hot spring.
• Where there is high-frequency or wireless equipment.
• Where there is emission of high levels of VOCs, including phthalate
compounds, formaldehyde, etc., which may cause chemical cracking.
• The appliance shall be stored so as to prevent mechanical damage
from occurring.
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