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Contents
1. Safety precautions .....................................................................................1
2. Installing the indoor unit ............................................................................2
3. Installing the refrigerant piping .................................................................. 4
4. Drainage piping work .................................................................................6
Note:
The phrase "Wired remote controller" in this installation manual refers to the TAR-40MAA.
If you need any information for the other remote controller, please refer to either the installation manual or initial setting manual which are included in these box.
1. Safety precautions
Before installing the unit, make sure you read all the "Safety precau-
tions".
Please report to your supply authority or obtain their consent before
connecting this equipment to the power supply system.
Warning:
Describes precautions that must be observed to prevent danger of injury or
death to the user.
Caution:
Describes precautions that must be observed to prevent damage to the unit.
Warning:
• Ask a dealer or an authorized technician to install the unit.
• For installation work, follow the instructions in the Installation Manual and
use tools and pipe components ������ made for use with refrigerant
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• The unit must be installed according to the instructions in order to mini-
mize the risk of damage from earthquakes, typhoons, or strong winds. An
incorrectly installed unit may fall down and cause damage or injuries.
• ��������������������������������
• The unit must be securely installed on a structure that can sustain its
weight.
• If the air conditioner is installed in a small room, measures must be taken
to prevent the refrigerant concentration in the room from exceeding the
safety limit in the event of refrigerant leakage. Should the refrigerant leak
and cause the concentration limit to be exceeded, hazards due to lack of
oxygen in the room may result.
• Ventilate the room if refrigerant leaks during operation. If refrigerant comes
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• All electric work must be performed by a ����� technician according to
local regulations and the instructions given in this manual.
• Do not use intermediate connection of the electric wires.
1.1. Before installation (Environment)
Caution:
• Do not use the unit in an unusual environment. If the air conditioner is installed
in areas exposed to steam, volatile oil (including machine oil), or sulfuric gas,
areas exposed to high salt content such as the seaside, the performance can
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• Do not install the unit where combustible gases may leak, be produced,
��, or accumulate. If combustible gas accumulates around the unit, �� or
explosion may result.
• Do not keep food, plants, caged pets, artwork, or precision instruments in
the direct ���� of the indoor unit or too close to the unit, as these items
can be damaged by temperature changes or dripping water.
1.2. Before installation or relocation
Caution:
• Be extremely careful when transporting the units. Two or more persons are
needed to handle the unit, as it weighs 44 lbs. (20 kg) or more. Do not grasp
the packaging bands. Wear protective gloves as you can injure your hands
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• Be sure to safely dispose of the packaging materials. Packaging materials,
such as nails and other metal or wooden parts may cause stabs or other
en
injuries.
1.3. Before electric work
Caution:
• Be sure to install circuit breakers. If not installed, electric shock may result.
• For the power lines, use standard cables of ����� capacity. Otherwise,
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• When installing the power lines, do not apply tension to the cables.
1.4. Before starting the test run
Caution:
• Turn on the main power switch more than 12 hours before starting opera-
tion. Starting operation just after turning on the power switch can severely
damage the internal parts.
• Before starting operation, check that all panels, guards and other protective parts
are correctly installed. Rotating, hot, or high voltage parts can cause injuries.
1
5. Electrical work ...........................................................................................7
6. Test run ......................................................................................................9
7. Installing the grille .................................................................................... 11
After installation work has been completed, explain the "Safety Precautions," use, and
maintenance of the unit to the customer according to the information in the Operation
Manual and perform the test run to ensure normal operation. Both the Installation
Manual and Operation Manual must be given to the user for keeping. These manuals
must be passed on to subsequent users.
: Indicates a part which must be grounded.
Warning:
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• ������������������
• ��������������������������������
• Use only accessories authorized by Mitsubishi Electric and ask a dealer or
an authorized technician to install them.
• The user should never attempt to repair the unit or transfer it to another
location.
• After installation has been completed, check for refrigerant leaks. If refrig-
erant leaks into the room and comes into contact with the ���of a heater
or water leakage.
or portable cooking range, poisonous gases will be released.
• When installing or relocating, or servicing the air conditioner, use only the
����� refrigerant (R410A) to charge the refrigerant lines. Do not mix it
with any other refrigerant and do not allow air to remain in the lines.
If air is mixed with the refrigerant, then it can be the cause of abnormal high
pressure in the refrigerant line, and may result in an explosion and other
hazards.
The use of any refrigerant other than that specified for the system will
cause mechanical failure or system malfunction or unit breakdown. In the
worst case, this could lead to a serious impediment to securing product
safety.
• When the room humidity exceeds 80% or when the drainpipe is clogged,
water may drip from the indoor unit. Do not install the indoor unit where
such dripping can cause damage.
• When installing the unit in a hospital or communications office, be pre-
pared for noise and electronic interference. Inverters, home appliances,
high frequency medical equipment, and radio communications equipment
can cause the air conditioner to malfunction or breakdown. The air con-
ditioner may also affect medical equipment, disturbing medical care, and
communications equipment, harming the screen display quality.
• Thermal insulation of the refrigerant pipe is necessary to prevent conden-
sation. If the refrigerant pipe is not properly insulated, condensation will be
formed.
• Place thermal insulation on the pipes to prevent condensation. If the drain-
pipe is installed incorrectly, water leakage and damage to the ceiling, ��,
furniture, or other possessions may result.
• Do not clean the air conditioner unit with water. Electric shock may result.
• Tighten all �� nuts to ������ using a torque wrench. If tightened
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• Be sure to ground the unit. If the unit is not properly grounded, electric
shock may result.
• Use circuit breakers (ground fault interrupter, isolating switch (+B fuse), and
molded case circuit breaker) with the ����� capacity. If the circuit breaker
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• Do not operate the air conditioner without the air ��� set in place. If the air
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• Do not touch any switch with wet hands. Electric shock may result.
• Do not touch the refrigerant pipes with bare hands during operation.
• After stopping operation, be sure to wait at least ��minutes before turning
off the main power switch. Otherwise, water leakage or breakdown may result.
ed.
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esult.
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