Mitsubishi Electric MSZ-GE22VAD, MSZ-GE25VAD, MSZ-GE35VAD, MSZ-GE42VAD, MSZ-GE50VAD Installation Manual
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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
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 or electric
shock, injury due to the unit falling, or leakage of water.
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
extend 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 defec-
tive contact, 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 or relocating the unit, make sure
that no substance other than the specified refrigerant (R410A) enters the refrigerant circuit.
Any presence of foreign substance such as air can
cause abnormal pressure rise and may result in explosion or injury.
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 compressor before disconnecting the refrigerant pipes.
If the refrigerant pipes are disconnected while the compressor 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 refrigerant 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 national 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 household 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.
*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 If pipe length exceeds 7 m, additional refrigerant (R410A)
charge is required. (No additional charge is required for
pipe length less than 7 m.)
Additional refrigerant = A × (pipe length (m) - 7)
*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.
WARNING
(Could lead to death, serious injury, etc.)
JG79B252H02
SPLIT-TYPE AIR CONDITIONERS
INSTALLATION MANUAL
ENGLISH
Model names are indicated in 1-3.
When installing multi units, refer to
the installation manual of the multi
unit for outdoor unit installation.
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-GE22VAD
MSZ-GE25VAD
MSZ-GE35VAD
MSZ-GE42VAD
MUZ-GE25VAD
MUZ-GE35VAD
MUZ-GE42VAD
230 V 50 Hz
10 A
3-core
1.0 mm
2
4-core
1.0 mm
2
ø9.52 / 6.35 mm
(0.8 mm)
MSZ-GE50VAD MUZ-GE50VAD 16 A
3-core
2.0 mm
2
ø12.7 / 6.35 mm
(0.8 mm)
(GE25, 35 ,42/GE50)
Pipe length and height difference
Max. pipe length 20/30 m
Max. height difference 12/15 m
Max. number of bends *5, *6 10
Refrigerant adjustment A *7 30/20 g/m
Insulation thickness *8, *9
8 mm
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. Do not expose to
direct sunshine also during the period following unpacking to
before use.
• 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 affected
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 received by the
indoor unit from that position (‘beep’ or ‘beep beep’ receiving
tone sounds). After that, attach remote controller holder to a
pillar or wall and install wireless 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 in
-
crease 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 ampli
-
fier 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.
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, includ
ing phthalate compounds, formaldehyde, etc., which may
cause chemical cracking.
2-1. FIXING OF INSTALLATION PLATE
• Find a structural material (such as a stud) in the wall and fix installation plate (1) horizontally by tightening the fixing screws (2) firmly.
• To prevent installation plate (1) from vibrating, be sure to install the fixing screws in
the holes indicated in the illustration. For added support, fixing screws may also be
installed in other holes.
• When the knockout is removed, apply vinyl tape to the knockout edges to prevent
damaging the wires.
• When bolts recessed in the concrete wall are to be utilized, secure installation plate (1)
using 11 × 20 · 11 × 26 oval hole (450 mm pitch).
• If the recessed bolt is too long, change it for a shorter one available in the market.
2-2. WALL HOLE DRILLING
1) Determine the wall hole position.
2) Drill a ø 65 mm hole. The outdoor side should be
5 to 7 mm lower than the indoor side.
3) Insert wall hole sleeve (C).
2-3. CONNECTING WIRES FOR INDOOR UNIT
You can connect indoor/outdoor lead wire without removing the front panel.
1) Open the front panel.
2) Remove VA clamp.
3) Pass indoor/outdoor unit connecting wire (A) from the back of the indoor unit and process the end of the wire.
ACCESSORIES
Check the following parts before installation.
<Indoor unit>
(1) Installation plate 1
(2)
Installation plate fixing screw
4 × 25 mm
5
(3) Remote controller holder 1
(4)
Fixing screw for (3) 3.5 × 16 mm
(Black)
2
(5) Battery (AAA) for (6) 2
(6) Wireless remote controller 1
(7)
Felt tape
(For left or left-rear piping)
1
(8) Air cleaning filter 2
<Outdoor unit>
(9) Drain socket (VA type only) 1
(10)
Drain cap ø 33 (GE50VA only) 2
PARTS TO BE PROVIDED
AT YOUR SITE
(A)
Indoor/outdoor unit connecting wire*1
1
(B) Extension pipe 1
(C) Wall hole sleeve 1
(D) Wall hole cover 1
(E) Pipe fixing band 2 to 5
(F) Fixing screw for (E) 4 × 20 mm 2 to 5
(G) Piping tape 1
(H) Putty 1
(I)
Drain hose
(or soft PVC hose, 15 mm inner
diameter or hard PVC pipe VP16)
1 or 2
(J) Refrigeration oil 1
(K) Power supply cord*1 1
Liquid pipe
Gas pipe
Felt tape (7)
Indoor/outdoor unit
connecting wire (A)
Piping tape (G)
2. INDOOR UNIT INSTALLATION
Level
110 mm
or more
100 mm
or more
100 mm
or more
350 mm
or more
100 mm
or more
54 mm or more/
130 mm or more for
left and left back piping
(using spacer)
10 mm or more
1-4. INSTALLATION DIAGRAM
Units should be installed by licensed contractor
according to local code requirements.
Indoor unit
Wall hole
sleeve (C)
Cut off the
extra length.
Pipe fixing band
(E)
Be sure to use wall hole
sleeve (C) to prevent
indoor/outdoor connecting
wire (A) from contacting
metal parts in the wall and
to prevent damage by
rodents in case the wall is
hollow.
Wall hole cover (D)
Seal the wall hole
gap with putty (H).
Fix the pipe to wall
with pipe fixing
band (E).
Fixing screw
(F)
After the leak test, apply
insulating material tightly
so that there is no gap.
When the piping is to be attached to a wall containing
metals (tin plated) or metal
netting, use a chemically
treated wooden piece 20
mm or thicker between the
wall and the piping or wrap
7 to 8 turns of insulation vi
nyl tape around the piping.
To use existing piping, perform COOL operation for
30 minutes and pump down
before removing the old air
conditioner. Remake flare
according to the dimension
for new refrigerant.
Appearance of the outdoor unit may differ from
some models.
Wall
Outdoor
side
ø 65 mm
5-7 mm
4) Loosen terminal screw, and connect first the earth wire, then indoor/outdoor unit connecting wire (A) to the terminal block. Be careful not to make mis-wiring. Fix the wire
to the terminal block securely so that no part of its core is appeared, and no external
force is conveyed to the connecting section of the terminal block.
5) Firmly tighten the terminal screws to prevent them from loosening. After tightening, pull
the wires lightly to confirm that they do not move.
6) Secure indoor/outdoor unit connecting wire (A) and the earth wire with the VA clamp.
Never fail to hook the left claw of the VA clamp. Attach the VA clamp securely.
2-4. PIPE FORMING AND DRAIN PIPING
Pipe Forming
• Place the drain hose below the refrigerant piping.
• Make sure that the drain hose is not heaved or snaked.
• Do not pull the hose when applying the tape.
• When the drain hose passes the room, be sure to wrap
insulation material (obtainable at a store) around it.
Installation plate (1)
Plumb
Align the plumb
line with the
mark
.
Center of
ø 65 mm hole
110 mm
or more
100 mm
or more
Bind the line to the center hole.
54 mm or more
130 mm or more for left and left
back piping (using spacer)
Ceiling
Wall
Wall
Fixing screw (2)
* Same for left hole.
Insert
the
scale. *
Align the
scale with
the line. *
100 mm
Terminal block
Fixing screw
Indoor/outdoor unit
connecting wire (A)
VA clamp
Lead wire
15 mm
35 mm
200/500 mm *3
or more
clear*2
(9)
(I)
(10)
GE50VA
(9)
(I)
GE25, 35 ,42VA
Drain piping for outdoor unit
<VA type only>
• Provide drain piping before indoor and
outdoor piping connection.
• Connect drain hose (I) I.D.15 mm as
shown in the illustration.
• Choose one hole for draining, and
install drain socket (9). Close the re
maining two holes with drain cap (10)
(GE50VA only).
• Make sure to provide drain piping with
a downhill grade for easy drain flow.
Note:
Install the unit horizontally.
Do not use drain socket (9) in cold
regions. Drain may freeze and make the
fan stop.
Air inlet
Air outlet
Outdoor unit installation
(GE25, 35, 42/
GE50
)
2/4-10 mm × 21mm slot
800/840 mm
150/169
mm
500 mm
344.5/392 mm
285/330 mm
304-325/360 mm
40 mm
IMPORTANT NOTES
To comply with the requirements of Australian standard AS/NZS 3000 electrical installations (wiring rules), the electrical wiring required between the
indoor and outdoor units must be installed by a licenced electrical contractor.
Indoor terminal block
Indoor/outdoor
unit
connecting wire
(A)
Outdoor terminal block
Earth wire
(green/yellow)
• For future servicing, give extra length to the
connecting wires.
• Make earth wire a little longer than others. (More
than 60 mm)
• Do not fold the excess wire, or cram it into small
space. Take caution not to damage the wires.
• Be sure to attach each screw to its
correspondent terminal when securing the cord
and/or the wire to the terminal block.
Note: Do not place the wires between the
indoor unit and the installation plate (1). Dam
-
aged wire could cause heat generation or fire.
Note:
*1 Place indoor/outdoor unit connecting wire
(A) and power supply cord (K) at least 1 m
away from the TV antenna wire.
*2 100/500 mm or more when front
and sides of unit are clear
*3 When any 2 sides of left,
right and rear of unit are
clear
(GE25, 35, 42/GE50)
(GE25, 35, 42/GE50)
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