Mitsubishi Electric MSZ-LN18VG2 Installation Manual

SPLIT-TYPE AIR CONDITIONERS
INSTALLATION MANUAL
1. BEFORE INSTALLATION
MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT
WARNING
Read the OPERATING INSTRUCTIONS carefully before operation.
Service personnel are required to carefully read the OPERATING INSTRUCTIONS and INSTALLATION MANUAL before operation.
Further information is available in the OPERATING INSTRUCTIONS, INSTALLATION MANUAL, and the like.
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.
• Before starting the connection setup of the Wi-Fi interface, check the safety precautions in OPERATING INSTRUCTIONS of the room air conditioner.
• After reading this manual, be sure to keep it together with the OPERATING INSTRUCTIONS for future reference.
■ Do not install the unit by yourself (user).
injury due to the unit falling, or leakage of water. Con-
sult the dealer from whom you purchased the unit or a
■ Perform the installation securely referring to the
installation manual.
injury due to the unit falling, or leakage of water.
■ When installing the unit, use appropriate protective
equipment and tools for safety.
Failure to do so could cause injury.
■ 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.
■ 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.
an electric shock.
■ Earth the unit correctly.
Do not connect the earth to a gas pipe, water pipe,
lightning rod, or telephone earth. Defective earthing
could cause electric shock.
■ 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.
Failure to do so could cause electric shock.
■
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.
If gas leaks and accumulates in the area around the
unit, it could cause an explosion.
■ Do not use intermediate connection of the power
cord or the extension cord and do not connect many
devices to one AC outlet.
contact, defective insulation, exceeding the permissible
current, etc.
■
for the installation work.
The use of defective parts could cause an injury or
unit falling, etc.
REFRIGERANT
Model names are indicated in 1-3.
When installing multi units, refer to the
installation manual of the multi unit for
outdoor unit installation.
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.
If there is dust, clogging, or loose parts on the power
supply plug or the outlet, it could cause electric shock or
replace it.
■ 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
water, etc.
■ When installing, relocating, or servicing the unit,
make sure that no substance other than the speci-
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
system malfunction, or unit breakdown. In the worst
case, this could lead to a serious impediment to securing
product safety.
■ 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.
heating part of such a fan heater, kerosene heater, or
cooking stove, it will create harmful gas. Provide ventila-
tion in accordance with EN378-1.
■ Use appropriate tools and piping materials for instal-
lation.
The pressure of R32 is 1.6 times more than R22. Not
using appropriate tools or materials and incomplete
installation could cause the pipes to burst or injury.
■ When pumping down the refrigerant, stop the com-
pressor 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.
■ 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.
JG79J514H25
Phillips screwdriver
Level
Scale
Utility knife or scissors
65 mm hole saw
Torque wrench
Wrench (or spanner)
(Could lead to death, serious injury, etc.)
■
in this manual.
period and cause refrigerant leakage.
■ 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.
heating part, it will create harmful gas and there is risk
■ 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.
■ Do not install the indoor unit equipped with the Wi-Fi
interface nearby the automatic control devices such
It can cause accidents due to malfunctions.
■ 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-
It can cause an accident due to malfunctions of the
medical equipment or device.
■ This indoor unit equipped with the Wi-Fi interface
should be installed and operated with a minimum
distance of 20 cm between the device and the user
or bystanders.
Required Tools for Installation
4 mm hexagonal wrench
Flare tool for R32, R410A
Gauge manifold for R32, R410A
Vacuum pump for R32, R410A
Charge hose for R32, R410A
Pipe cutter with reamer