Mitsubishi Electric MSZ-AS90VGD 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.
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.
• When using this product in Australia, carefully read the Australian Institute of Refrigeration and Flammable refrigerants Safety Guide in Air conditioning and Heating (AIRAH) as well.
■ Do not install the unit by yourself (user).
installer.
■ Perform the installation securely referring to the
installation manual.
■ 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.
■ Earth the unit correctly.
Do not connect the earth to a gas pipe, water pipe, light-
ning rod, or telephone earth. Defective earthing could
■ Do not damage the wires by applying excessive pres-
sure 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.
■
may leak.
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.
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.
■ 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
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 could
■ When installing, relocating, or servicing the unit,
refrigerant (R32) enters the refrigerant circuit.
Any presence of foreign substance such as air can cause
abnormal pressure rise and may result in explosion or
injury. The use of any refrigerant other than that speci-
could lead to a serious impediment to securing product
safety.
■ Do not discharge the refrigerant into the atmosphere.
If refrigerant leaks during installation, ventilate the
room. Check that the refrigerant does not leak after
installation has been completed.
stove, it will create harmful gas.
■ 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 com-
pressor 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 refriger-
ant 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.
JG79J842H01
Phillips screwdriver
Level
Scale
75 mm hole saw
Wrench (or spanner)
and obligations may differ.
WARNING
(Could lead to death, serious injury, etc.)
-
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
■
in this manual.
■ The unit shall be installed in accordance with national
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 process
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 mini-
mum.
■ Compliance with national gas regulations shall be
observed.
■ Keep any required ventilation openings clear of ob-
struction.
■ In Australia, only technicians that possess the appro-
priate license issued by the Australian Refrigeration
Council (ARC) should install this product.