1. BEFORE INSTALLATION
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
• Be sure to read “THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY” before installing the air conditioner.
• Be sure to observe the warnings and cautions specified here as they include important items related to safety.
• After reading this manual, be sure to keep it together with the OPERATING INSTRUCTIONS for future reference.
1-2. SELECTING THE INSTALLATION LOCATION
1-3. SPECIFICATIONS
CAUTION
(Could lead to serious injury in particular environments when operated incorrectly.)
Required Tools for Installation
Phillips screwdriver
Level
Scale
Utility knife or scissors
65 mm hole saw
Torque wrench
Wrench (or spanner)
4 mm hexagonal wrench
Flare tool for R410A
Gauge manifold for R410A
Vacuum pump for R410A
Charge hose for R410A
Pipe cutter with reamer
INDOOR UNIT
• Where airflow is not blocked.
• Where cool air spreads over the entire room.
• Rigid wall without vibration.
• Where it is not exposed to direct sunshine.
• Where easily drained.
• At a distance 1 m or more away from your TV and radio.
Operation of the air conditioner may interfere with radio
or TV reception. An amplifier may be required for the af-
fected device.
• In a place as far away as possible from fluorescent and
incandescent lights (so the infrared remote control can
operate the air conditioner normally).
• Where the air filter can be removed and replaced easily.
REMOTE CONTROLLER
• Where it is easy to operate and easily visible.
• Where children cannot touch it.
• Select a position about 1.2 m above the floor and check
that signals from the remote controller are surely re-
ceived by the indoor unit from that position (‘beep’ or
‘beep beep’ receiving tone sounds). After that, attach re-
mote controller holder to a pillar or wall and install wire-
less remote controller.
Note:
In rooms where inverter type fluorescent lamps are used,
the signal from the wireless remote controller may not be
received.
OUTDOOR UNIT
• Where it is not exposed to strong wind.
• Where airflow is good and dustless.
• Where rain or direct sunlight 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 operation sound or vibration.
• Where there is no risk of combustible gas leakage.
• When installing the unit at a high level, be sure to secure
the unit legs.
• Where it is at least 3 m away from the antenna of TV set
or radio. Operation 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.
*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.
*3 Never use pipes with thickness less than specified. The
pressure resistance will be insufficient.
*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 Refer to the installation manual of the multi-type outdoor
units.
*8 Insulation material : Heat resisting foam plastic 0.045
specific gravity
*9 Be sure to use the insulation of specified thickness. Exces-
sive thickness may cause incorrect installation of the indoor
unit and insufficient thickness may cause dew drippage.
Note:
When operating the air conditioner in low outside tempera-
ture, 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 in-
stall a baffle board on the air outlet side of the outdoor
unit.
Avoid the following places for installation where air condi-
tioner trouble is liable to occur.
• Where flammable gas could leak.
• Where there is much machine oil.
• 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, includ-
ing phthalate compounds, formaldehyde, etc., which
may cause chemical cracking.
WARNING
(Could lead to death, serious injury, etc.)
JG79R296H01
SPLIT-TYPE AIR CONDITIONERS
INSTALLATION MANUAL
ENGLISH
Model names are indicated in 1-3.
This installation manual describes only
for the indoor unit. Refer to the MXZ
type manual for outdoor unit set up.
Model
Power supply *1
Wire specifications *2
Pipe size
(thickness *3, *4)
Indoor unit
Outdoor unit
Rated
Voltage
Frequency
Breaker
capacity
Power supply
Indoor/outdoor
connecting wire
Gas / Liquid
MSZ-EF22VA(W/B/S)
MSZ-EF25VA(W/B/S)
MSZ-EF35VA(W/B/S)
MSZ-EF42VA(W/B/S)
–
*7
230 V
50 Hz
–
*7
–
*7
4-core
1.0 mm
2
ø9.52 / 6.35 mm
(0.8 mm)
MSZ-EF50VA(W/B/S)
ø12.7 / 6.35 mm
(0.8 mm)
N
Do not install the unit by yourself (user).
Incomplete installation could cause fire or electric
shock, injury due to the unit falling, or leakage of water.
Consult the dealer from whom you purchased the unit
or a qualified installer.
N
Perform the installation securely referring to the
installation manual.
Incomplete installation could cause fire, electric shock,
or injury due to the unit falling, or leakage of water.
N
When installing the unit, use appropriate protective
equipment and tools for safety.
Failure to do so could cause injury.
N
Install the unit securely in a place which can bear
the weight of the unit.
If the installation location cannot bear the weight of the
unit, the unit could fall causing injury.
N
Electrical work should be performed by a qualified,
experienced electrician, according to the installation
manual. Be sure to use an exclusive circuit. Do not
connect other electrical appliances to the circuit.
If the capacity of the power circuit is insufficient or there
is incomplete electrical work, it could result in a fire or
an electric shock.
N
Earth the unit correctly.
Do not connect the earth to a gas pipe, water pipe, light-
ning rod or telephone earth. Defective earthing could
cause electric shock.
N
Do not damage the wires by applying excessive
pressure with parts or screws.
Damaged wires could cause fire or electric shock.
N
Be sure to cut off the main power in case of setting
up the indoor P.C. board or wiring works.
Failure to do so could cause electric shock.
N
Use the specified wires to connect the indoor and
outdoor units securely and attach the wires firmly to
the terminal block connecting sections so the stress
of the wires is not applied to the sections. Do not ex-
tend the wires, or use intermediate connection.
Incomplete connecting and securing could cause fire.
N
Do not install the unit in a place where inflammable gas may leak.
If gas leaks and accumulates in the area around the
unit, it could cause an explosion.
N
Do not use intermediate connection of the power
cord or the extension cord and do not connect
many devices to one AC outlet.
It could cause a fire or an electric shock due to defective con-
tact, defective insulation, exceeding the permissible current, etc.
N
Be sure to use the parts provided or specified parts
for the installation work.
The use of defective parts could cause an injury or leakage
of water due to a fire, an electric shock, the unit falling, etc.
N
When plugging the power supply plug into the outlet,
make sure that there is no dust, clogging, or loose
parts in both the outlet and the plug. Make sure that the
power supply plug is pushed completely into the outlet.
If there is dust, clogging, or loose parts on the power sup-
ply plug or the outlet, it could cause electric shock or fire. If
loose parts are found on the power supply plug, replace it.
N
Attach the electrical cover to the indoor unit and the
service panel to the outdoor unit securely.
If the electrical cover of the indoor unit and/or the service
panel of the outdoor unit are not attached securely, it could
result in a fire or an electric shock due to dust, water, etc.
N
When installing, relocating, or servicing the unit,
make sure that no substance other than the speci-
fied refrigerant (R410A) enters the refrigerant circuit.
Any presence of foreign substance such as air can
cause abnormal pressure rise and may result in explo-
sion or injury. The use of any refrigerant other than that
specified for the system will cause mechanical failure,
system malfunction, or unit breakdown. In the worst
case, this could lead to a serious impediment to secur-
ing product safety.
N
Do not discharge the refrigerant into the atmosphere. If
refrigerant leaks during installation, ventilate the room.
If refrigerant comes in contact with a fire, harmful gas
could be generated.
N
Check that the refrigerant gas does not leak after
installation has been completed.
If refrigerant gas leaks indoors, and comes into contact
with the flame of a fan heater, space heater, stove, etc.,
harmful substances will be generated.
N
Use appropriate tools and piping materials for installation.
The pressure of R410A is 1.6 times more than R22.
Not using appropriate tools or materials and incomplete
installation could cause the pipes to burst or injury.
N
When pumping down the refrigerant, stop the com-
pressor before disconnecting the refrigerant pipes.
If the refrigerant pipes are disconnected while the compres-
sor is running and the stop valve is open, air could be drawn
in and the pressure in the refrigeration cycle could become
abnormally high. This could cause the pipes to burst or injury.
N
When installing the unit, securely connect the re-
frigerant pipes before starting the compressor.
If the compressor is started before the refrigerant pipes
are connected and when the stop valve is open, air
could be drawn in and the pressure in the refrigeration
cycle could become abnormally high. This could cause
the pipes to burst or injury.
N
Fasten a flare nut with a torque wrench as specified
in this manual.
If fastened too tight, a flare nut may break after a long
period and cause refrigerant leakage.
N
The unit shall be installed in accordance with na-
tional wiring regulations.
N
Install an earth leakage breaker depending on the
installation place.
If an earth leakage breaker is not installed, it could
cause electric shock.
N
Perform the drainage/piping work securely accord-
ing to the installation manual.
If there is defect in the drainage/piping work, water
could drop from the unit, soaking and damaging house-
hold goods.
N
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.
