3
Safety precaution
Only use prescribed optional parts. The installation
must be carried out by the qualified installer.
If you install the system by yourself, it can cause serious
trouble such as water leaks, electric shocks, re.
Do not run the unit with removed panels or protections
Touching rotating equipments, hot surfaces or high voltage
parts can cause personal injury due to entrapment, burn or
electric shocks.
Be sure to fix up the service panels.
Incorrect fixing can cause electric shocks or fire due to
intrusion of dust or water.
Do not perform any repairs or modifications by
yourself. Consult the dealer if the unit requires
repair.
If you repair or modify the unit, it can cause water leaks, electric
shocks or re.
Do not perform any change of protective device
itself or its setup condition.
The forced operation by short-circuiting protective device of
pressure switch and temperature controller or the use of non
specied component can cause re or burst.
Be sure to switch off the power supply in the
event of installation, inspection or servicing.
If the power supply is not shut off, there is a risk of electric
shocks, unit failure or personal injury due to the unexpected start
of fan.
Consult the dealer or an expert regarding removal
of the unit.
Incorrect installation can cause water leaks, electric shocks or re.
Stop the compressor before disconnecting
refrigerant pipes in case of pump down operation.
If disconnecting refrigerant pipes in state of opening service valves
before compressor stopping, air can be sucked, which can cause
burst or personal injury due to anomalously high pressure in the
refrigerant circuit.
CAUTION
Carry out the electrical work for ground lead with
care.
Do not connect the ground lead to the gas line, water line,
lightning conductor or telephone line’s ground lead. Incorrect
grounding can cause unit faults such as electric shocks due to
short-circuiting.
Use the circuit breaker with sufficient breaking
capacity.
If the breaker does not have sufficient breaking capacity, it can
cause the unit malfunction and re.
Earth leakage breaker must be installed.
If the earth leakage breaker is not installed, it can cause
electric shocks.
Do not use any materials other than a fuse with the
correct rating in the location where fuses are to be
used.
Connecting the circuit with copper wire or other metal thread can
cause unit failure and re.
Do not install the unit near the location where leakage
of combustible gases can occur.
If leaked gases accumulate around the unit, it can cause re.
Do not install the unit where corrosive gas (such as
sulfurous acid gas etc.) or combustible gas (such as
thinner and petroleum gases) can accumulate or
collect, or where volatile combustible substances are
handled.
Corrosive gas can cause corrosion of heat exchanger, breakage of
plastic parts and etc. And combustible gas can cause re.
Secure a space for installation, inspection and
maintenance specified in the manual.
Insufficient space can result in accident such as personal
injury due to falling from the installation place.
When the outdoor unit is installed on a roof or a
high place, provide permanent ladders and
handrails along the access route and fences and
handrails around the outdoor unit.
If safety facilities are not provided, it can cause personal injury
due to falling from the installation place.
Do not use the indoor unit at the place where water
splashes may occur such as in laundries.
Since the indoor unit is not waterproof, it can cause electric shocks
and re.
Do not install nor use the system close to the
equipment that generates electromagnetic fields or
high frequency harmonics.
Equipment such as inverters, standby generators, medical high
frequency equipments and telecommunication equipments can
affect the system, and cause malfunctions and breakdowns. The
system can also affect medical equipment and telecommunication
equipment, and obstruct its function or cause jamming.
Do not install the outdoor unit in a location where
insects and small animals can inhabit.
Insects and small animals can enter the electric parts and cause
damage or re. Instruct the user to keep the surroundings clean.
Do not use the base flame for outdoor unit which
is corroded or damaged due to long periods of
operation.
Using an old and damage base flame can cause the unit falling
down and cause personal injury.
Do not install the unit in the locations listed below.
Locations where carbon fiber, metal powder or any
powder is oating.
Locations where any substances that can affect the unit such as
sulphide gas, chloride gas, acid and alkaline can occur.
Vehicles and ships.
Locations where cosmetic or special sprays are often used.
Locations with direct exposure of oil mist and steam such as
kitchen and machine plant.
Locations where any machines which generate high frequency
harmonics are used.
Locations with salty atmospheres such as coastlines.
Locations with heavy snow (If installed, be sure to provide base
ame and snow hood mentioned in the manual).
Locations where the unit is exposed to chimney smoke.
Locations at high altitude (more than 1000m high).
Locations with ammonic atmospheres.
Locations where heat radiation from other heat source can affect
the unit.
Locations without good air circulation.
Locations with any obstacles which can prevent inlet and outlet
air of the unit.
Locations where short circuit of air can occur (in case of
multiple units installation).
Locations where strong air blows against the air outlet of
outdoor unit.
It can cause remarkable decrease in performance, corrosion and
damage of components, malfunction and re.
Do not install the outdoor unit in the locations
listed below.
Locations where discharged hot air or operating sound of the
outdoor unit can bother neighborhood.
Locations where outlet air of the outdoor unit blows directly to
plants.
Locations where vibration can be amplied and transmitted due
to insufcient strength of structure.
Locations where vibration and operation sound generated by the
outdoor unit can affect seriously. (on the wall or at the place near
bed room)
Locations where an equipment affected by high harmonics is
placed. (TV set or radio receiver is placed within 5m)
Locations where drainage cannot run off safely.
It can affect surrounding environment and cause a claim.
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