6
Safety Precautions
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Before starting to use the system, read carefully this “SAFETY PRECAUTIONS” to ensure a proper operation of the system.
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Safety precautions described here are classied to “
WARNING” and “ CAUTION”. Precautions which are shown in the
column of “ WANING” means that an improper handing could lead to a grave result like a death, serious injury, etc. However,
even if precautions are shown in the column of “ CAUTION”, a very serious problem could occur depending on situation.
Make sure to observe these safety precautions faithfully because they are very important information to ensure the safety.
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Symbols which appear frequently in the text have following meanings.
Strictly prohibited. Observe instructions faithfully.
Provide a positive grounding.
When you have read through the manual, keep it always at hand for read consultation. If the operator is replaced, make sure to
hand over this manual to the new operator.
CAUTIONS FOR INSTALLATION
WARNING
The system should be applied to places
as ofce, restaurant, residence and the
like.
Application to inferior environment such
as an engineering shop, could cause
equipment malfunction and serious injury
or death.
The system should be installed by your
dealer or a professional installer.
Installation by yourself is not encouraged
because it could cause such problems
as water leakage, electrical shock or re
accident by some improper handing.
When you need some optional devices such
as a humidier, electric heater, etc., be sure
to use the products which are recommended
by us. These devices should be attached by
a professional installer.
Installation by yourself is not encouraged
because it could cause such problems
as water leakage, electrical shock or re
accident by some improper handing.
WARNING
Do not install nearby the place where may
have leakage of ammable gas.
If the gas leakes and gathers around, it
may cause the re.
Depending on the place of installation, a
circuit breaker may be necessary.
Unless the circuit breaker is installed, it
could cause elecrical shocks.
Drain pipe should be arranged to provide a
positive draining.
If the pipe is arranged improperly, furniture or
the likes may be damaged by leaked water.
Where strong winds may prevail, the
system should be xed securely to
prevent a collapse.
Bodily injury could result by a collapse.
Install on the place where can endure
the weight of air conditioner.
Bodily injury could result by a careless
installation.
Make sure the system is grounded.
Grounding cable should never be connected
to a gas pipe, city water pipe, lightning
conductor rod or grounding cable of
telephone. If the grounding cable is not set
properly, it could cause electric shocks.
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Installation Precautions
WARNING!
The area of the room in which R32 refrigerant air conditioner is installed cannot be less than the minimum area specied in the
table below, to avoid potential safety problems due to out-of-limit of refrigerant concentration inside the room caused by leakage
of refrigerant from refrigeration system of the indoor unit.
Once the horn mouth of connecting lines is fastened, it may not be used again (the air tightness may be affected).
A whole connector wire shall be used for indoor/outdoor unit as required in the operation specication of installation process
and operation instructions.
Minimum Room Area
Type
LFL
kg/m3
hv
m
Total Mass Charged/kg
Minimum Room Area/m
2
R32 0.306
1.224 1.836 2.448 3.672 4.896 6.12 7.956
0.6 29 51 116 206 321 543
1.0 10 19 42 74 116 196
1.8 3 6 13 23 36 60
2.2 2 4 9 15 24 40
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