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SPLIT-TYPE AIR CONDITIONERS
INSTALLATION MANUAL
1. BEFORE INSTALLATION
MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT
WARNING
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
■ Do not install the unit by yourself (user).
■ Perform the installation securely referring to the
installation manual.
■ When installing the unit, use appropriate protective
equipment and tools for safety.
■ Install the unit securely in a place which can bear
the weight of the unit.
■ Do not alter the unit.
■
experienced electrician, according to the installation
manual. Be sure to use an exclusive circuit. Do not
connect other electrical appliances to the circuit.
■ Earth the unit correctly.
■ Do not damage the wires by applying excessive
pressure with parts or screws.
■ Be sure to cut off the main power in case of setting
up the indoor P.C. board or wiring works.
■
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.
■
gas may leak.
■ Do not use intermediate connection of the power
cord or the extension cord and do not connect many
devices to one AC outlet.
■
for the installation work.
■ Install an earth leakage breaker depending on the
installation place.
■ Perform the drainage/piping work securely ac-
cording to the installation manual.
REFRIGERANT
Model names are indicated in 1-3.
®
WARNING
■ 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 com-
pletely into the outlet.
■ Attach the electrical cover to the indoor unit and the
service panel to the outdoor unit securely.
■ When installing, relocating, or servicing the unit,
make sure that no substance other than the speci-
■ Do not discharge the refrigerant into the atmos-
phere. If refrigerant leaks during installation, ven-
tilate the room. Check that the refrigerant does not
leak after installation has been completed.
■ Use appropriate tools and piping materials for instal-
lation.
■ When pumping down the refrigerant, stop the com-
pressor before disconnecting the refrigerant pipes.
■ When installing the unit, securely connect the re-
frigerant pipes before starting the compressor.
■
in this manual.
CAUTION
■
the outdoor unit.
■ Do not install the outdoor unit where small animals
may live.
Required Tools for Installation
Scale
■ The unit shall be installed in accordance with na-
tional wiring regulations.
■
equipment, completely remove all of the refrigerant
from the air conditioner and ensure that the area is
well-ventilated.
■ Do not use means to accelerate the defrosting pro-
cess or to clean, other than those recommended by
the manufacturer.
■ The appliance shall be stored in a room without
continuously operating ignition sources (for exam-
operating electric heater).
■ Do not pierce or burn.
■ Be aware that refrigerants may not contain an odour.
■ Pipe-work shall be protected from physical damage.
■ The installation of pipe-work shall be kept to a
minimum.
■ Compliance with national gas regulations shall be
observed.
■ Keep any required ventilation openings clear of
obstruction.
For Wi-Fi
interface
®
■ Do not install the indoor unit equipped with the
Wi-Fi
interface nearby the automatic control de-
®
■ Do not use the indoor unit equipped with the Wi-Fi
interface nearby the medical electrical equipment
or people who have a medical device such as a
cardiac pacemaker or an implantable cardioverter-
■ This indoor unit equipped with the Wi-Fi
should be installed and operated with a minimum
distance of 20 cm between the device and the user
or bystanders.
■ Do not operate the air conditioner during interior
®
interface
®
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Summary of Contents for Mitsubishi Electric MSZ-EF18B
- Page 1 Required Tools for Installation REFRIGERANT Scale Model names are indicated in 1-3. SPLIT-TYPE AIR CONDITIONERS INSTALLATION MANUAL 1. BEFORE INSTALLATION MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT WARNING 1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY ®...
- Page 2 1-2. SELECTING THE INSTALLATION LOCATION INDOOR UNIT OUTDOOR UNIT WARNING EF25: 2.2 m EF35/42: 2.5 m EF50: 3.9 m As for the details, please refer to the Installation Service Manual for New Refrigerant System. Note: Note: REMOTE CONTROLLER Note: 1-3. SPECIFICATIONS —...
- Page 3 1-4. INSTALLATION DIAGRAM ACCESSORIES PARTS TO BE PROVIDED AT YOUR SITE Note: Putty WARNING Outdoor unit installation Drain piping for outdoor unit <VG type only> Note: IMPORTANT NOTES...
- Page 4 2. INDOOR UNIT INSTALLATION 2-3. CONNECTING WIRES FOR INDOOR UNIT CAUTION completes. 2-1. FIXING OF INSTALLATION PLATE 2-2. WALL HOLE DRILLING Wall side Wall Wall S1 S2 S3 Insert scale with wire S1 S2 S3 Note:...
- Page 5 2-4. PIPE FORMING AND DRAIN PIPING Left or left-rear piping Pipe Forming Note: Rear, right, or downward piping Drain Piping Insert securely drain water in water Water Water Water leakage leakage leakage...
- Page 6 3. OUTDOOR UNIT INSTALLATION 3-1. CONNECTING WIRES FOR OUTDOOR UNIT Wing nut (mm) (mm) N•m Power supply cord (J) 3-3. PIPE CONNECTION Indoor unit connection Power supply cord (J) the cable tie in the Flare nut Internal thread side 3-2. FLARING WORK Outdoor unit connection Burr WARNING...
- Page 7 4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN 4-1. PURGING PROCEDURES AND LEAK TEST 4-2. TEST RUN Pressure gauge Checking the remote (infrared) signal reception •cm) 4-3. AUTO RESTART FUNCTION <R32> Caution: To the user 4-4. EXPLANATION TO THE USER WARNING risks before opening the stop valves.
- Page 8 6. RELOCATION AND MAINTENANCE 6-1. REMOVING AND INSTALLING THE PANEL ASSEMBLY 6-3. PUMPING DOWN Removal procedure Installation procedure WARNING When pumping down the refrigerant, stop the compressor before discon- necting the refrigerant pipes. The compressor may burst if air etc. get into it. 6-2.
- Page 9 Related Links Model Number: MUZ-EF25VG Garden Room Office, M Series, Hampshire MSZ-EF R32 Product Information Sheet MSZ-EF-VGK DoC (UK2021B45) MSZ-EF18-50VGK MUZ-EF25-50VG Declaration of Conformity MSZ-EF18-50VGK MUZ-EF25-50VG Installation Manual (JG79N495H01) MSZ-EF25-35VE3 / MUZ-EF25-35VE Installation Manual (JG79A476H01) MSZ-EF25-50VG MUZ-EF25-50VG Declaration of Conformity (CE2019B01) MSZ-EF25-50VG MUZ-EF25-50VG Installation Manual (JG79J334H01) MUZ-EF25-50VG Parts List (OBB832)
- Page 10 Related Links Model Number: MUZ-EF25VG...