3 About the units and options
Installation manual
5
FNA25~60A2VEB(9)
Split system air conditioners
4P456958-1D – 2018.11
3
About the units and options
3.1
System layout
INFORMATION
The following illustration is an example and might NOT
match your system layout.
a
b
c
f
d
e
a
Indoor unit
b
Outdoor unit
c
User interface
d
Refrigerant interconnection cable
e
Drain pipe
f
Earth wiring
4
Preparation
4.1
Preparing the installation site
▪ Provide sufficient space around the unit for servicing and air
circulation.
▪ Choose the installation location with sufficient space for carrying
the unit in and out of the site.
CAUTION
Do NOT install or use in places filled with smoke, gas,
chemicals etc. Sensors inside the indoor unit may detect
these substances, and display a refrigerant leak
abnormality.
1
WARNING
Do NOT install the air conditioner at any place where
flammable gas may leak out. If the gas leaks out and stays
around the air conditioner, a fire may break out.
CAUTION
Do NOT install or use in highly airtight spaces, e.g.
soundproof chambers or rooms with sealed doors.
1
CAUTION
This unit is equipped with electrically powered safety
measures, such as a refrigerant leak detector. In order to
be effective, the unit must be electrically powered at all
times after installation, except for short service periods.
1
4.1.1
Installation site requirements of the
indoor unit
INFORMATION
The sound pressure level is less than 70 dBA.
▪ Use
suspension bolts
for installation.
▪ Mind the following requirements:
Wall-mounted type
Floor-standing type
a
a
a
1750
100
a
a
Minimum clearance
Top view
≥
300
≥
300
≥
1000
(mm)
≤
20
a
a
Indoor unit
▪ Install the unit with a prebuilt fully enclosed casing with removable
access panel, suction air grille and discharge grille. These
removable parts shall prevent access to the unit and can ONLY be
removed using a removal tool.
▪ In case of installation under a window sill, make sure that there is
no short-circuit of air.
5
Installation
5.1
Mounting the indoor unit
5.1.1
Guidelines when installing the indoor unit
INFORMATION
Optional equipment.
When installing optional equipment,
also read the installation manual of the optional equipment.
Depending on the field conditions, it might be easier to
install the optional equipment first.
▪
Wall or floor strength.
Check whether the wall or the floor is
strong enough to support the weight of the unit. If there is a risk,
reinforce the wall or the floor before installing the unit.
▪
Suspension bolts.
Use W3/8 M10 suspension bolts for
installation. Attach the hanger bracket to the suspension bolt. Fix it
securely using a nut and washer from the upper and lower sides
of the hanger bracket.
(1)
Only for units using R32 refrigerant. Refer to the outdoor unit specifications for the type of refrigerant to be used.
