• For R32 model, use pipes,
fl
are nut and tools which is speci
fi
ed for R32
refrigerant. Using of existing (R22) piping,
fl
are nut and tools may cause
abnormally high pressure in the refrigerant cycle (piping), and possibly result in
explosion and injury.
• Thickness of copper pipes used R32 must be more than 0.8 mm. Never use
copper pipes thinner than 0.8 mm.
• Do not perform
fl
are connection inside a building or dwelling or room, when
joining the heat exchanger of indoor unit with interconnection piping. Refrigerant
connection inside a building or dwelling or room must be made by brazing or
welding. Joint connection of indoor unit by
fl
aring method can only be made
at outdoor or at outside of building or dwelling or room. Flare connection may
cause gas leak and
fl
ammable atmosphere.
• After completion of installation or service, con
fi
rm there is no leakage of
refrigerant gas. It may generate toxic gas when the refrigerant contacts with
fi
re.
• Appliance and pipe-work shall be installed, operated and stored in a room with a
fl
oor area larger than A
min
m
2
.
How to get A
min
m
2
: A
min
= (M / (2.5 x 0.22759 x h
0
))
2
M is the refrigerant charge amount in appliance in kg. h
0
is the installation height
of the appliance in m: 0.6 m for
fl
oor standing/1.8 m for wall mounted/1.0 m
for window mounted/2.2 m for ceiling mounted (For these units recommend
installation height 1.0 m or less.).
• Comply with national gas regulations.
CAUTION
• Exposure of unit to water or other moisture before installation could result in
electric shock.
Do not store it in a wet basement or expose to rain or water.
• After unpacking the unit, examine it carefully for possible damage.
• Do not install the unit at place where leakage of
fl
ammable gas may occur. In
case gas leaks and accumulates at surrounding of the unit, it may cause of
fi
re.
• Do not install in a place that can increase the vibration of the unit. Do not
install in a place that can amplify the noise level of the unit or where noise and
discharged air might disturb neighbors.
• To avoid personal injury, be careful when handling parts with sharp edges.
• Please read this installation manual carefully before installing the unit. It contains
further important instructions for proper installation.
• The manufacturer shall not assume any liability for the damage caused by not
observing the description of this manual.
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