Mitsubishi Electric MSZ-FA25 Series Installation Manual

SG79Y420H02
INSTALLATION MANUAL
1. THE FOLLOWING SHOULD ALWAYS BE
OBSERVED FOR SAFETY
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Be sure to read "THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR
SAFETY" before installing the air conditioner.
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Be sure to observe the cautions specified here as they include important items related
to safety.
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The indications and meanings are as follows.
Could lead to death, serious injury, etc.
Could lead to serious injury in particular environments when operated incorrectly.
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After reading this manual, be sure to keep it together with the OPERATING
INSTRUCTIONS in a handy place on the customer's site.
■ Do not install the unit by yourself (customer).
Incomplete installation could cause injury due to fire, electric shock, the unit falling
or leakage of water. Consult the dealer from whom you purchased the unit or
special installer.
■ Install the unit securely in a place which can bear the weight of the unit.
When installed in an insufficient strong place, the unit could fall causing injury.
■ 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.
Incomplete connecting and fixing could cause fire.
■ 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 defective contact, defective
insulation, exceeding the permissible current, etc.
■ Check that the refrigerant gas do not leak after installation has completed.
If refrigerant gas leaks indoors, and comes into contact with the fire of a fan
heater, space heater, stove, etc., harmful substances will be generated.
■ Perform the installation securely referring to the installation manual.
Incomplete installation could cause a personal injury due to fire, electric shock,
the unit falling or leakage of water.
■ Perform electrical work according to the installation manual and be sure
to use an exclusive 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.
■ Attach the electrical cover to the indoor unit and the service panel to the
outdoor unit securely.
If the electrical cover in the indoor unit and/or the service panel in the outdoor
unit are not attached securely, it could result in a fire or an electric shock due to
dust, water, etc.
■ Be sure to use the part 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.
■ Be sure to cut off the main power in case of setting up the indoor electronic
control P.C. board or wiring works.
It could cause an electric shock.
■ The appliance shall be installed in accordance with national wiring
regulations.
■ 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 or an explosion.
SPLIT-TYPE AIR CONDITIONERS
Models
MSZ-FA25/FA35VA
MUZ-FA25/FA35VA
[FLARE CONNECTION TYPE]
WARNING
CAUTION
WARNING
HFC
utilized
R410A
Series
When installing an MXZ
series outdoor unit, refer to
the MXZ type manual for
outdoor unit set up.
■ Earth the unit.
Do not connect the earth to a gas pipe, water pipe, lightning rod or telephone earth.
Defective earthing could cause an electric shock.
■ Do not install the unit in a place where an inflammable gas leaks.
If gas leak and accumulate in the area surrounding the unit, it could cause an
explosion.
■ Install an earth leakage breaker depending on the installation place (Where
it is humid).
If an earth leakage breaker is not installed, it could cause an electric shock.
■ Perform the drainage/piping work securely according to the installation manual.
If there is a defect in the drainage/piping work, water could drop from the unit
and household goods could be wet and damaged.
■ Fasten a flare nut with a torque wrench as specified in this manual.
When fastened too tight, a flare nut may broken after a long period and cause
a leakage of refrigerant.

2. SELECTING THE INSTALLATION LOCATION

2-1 INDOOR UNIT

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Where airflow is not blocked.
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Where cool air spreads over the entire room.
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Maximum refrigerant piping length between indoor unit and outdoor unit is 20 m and
the difference of height of both units is 12 m.
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Rigid wall without vibration.
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Where it is not exposed to direct sunshine.
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Where easily drained.
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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 in areas where reception is weak.
An amplifier may be required for the affected device.
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In a place as far away as possible from fluorescent and incandescent lights (so the
infrared remote control can operate the air conditioner normally).
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Where the air filter can be removed and replaced easily.

2-2 OUTDOOR UNIT

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Where it is not exposed to strong wind.
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Where airflow is good and dustless.
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Where it is not exposed to rain and direct sunshine.
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Where neighbours are not annoyed by operation sound or hot air.
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Where rigid wall or support is available to prevent the increase of operation sound or vibration.
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Where there is no risk of combustible gas leakage.
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When installing the unit at a high level, be sure to fix the unit legs.
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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 amplifier may be required for the affected device.
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Install the unit horizontally.
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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.
Avoid the following places for installation where air conditioner trouble is liable to occur.
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Where flammable gas could leak.
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Where there is much machine oil.
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Salty places such as the seaside.
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Where sulfide gas is generated such as a hot spring.
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Where there is high-frequency or wireless equipment.
2-3 WIRELESS REMOTE CONTROLLER MOUNTING
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Place of mounting
• Where it is easy to operate and easily visible.
• Where children can not touch.
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Mounting
Select a position about 1.2 m above the floor, check that signals from the remote
controller are surely received by the indoor unit from that position ('beep' or 'beepbeep'
receiving tone sounds). After that, attach remote controller holder ! to a pillar or
wall and set the wireless remote controller ¤.
In rooms where inverter type fluorescent lamps are used, the signal from the
wireless remote controller may not be received.
IMPORTANT NOTES
TO COMPLY WITH THE REQUIREMENT 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.
CAUTION
CAUTION