En-
1. BEFORE INSTALLATION
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
•
Be
sure
to
read
“THE
FOLLOWING
SHOULD
ALWAYS
BE
OBSERVED
FOR
SAFETY”
before
installing
the
air
conditioner.
• Be sure to observe the warnings and cautions specified here as they include important items related to safety
•
After
reading
this
manual,
be
sure
to
keep
it
together
with
the
OPERATING
INSTRUCTIONS
for
future
reference.
•
Equipment
complying
with
IEC/EN
6
000-3-
2.
1-2. SPECIFICATIONS
CAUTION
(Could
lead
to
serious
injury
in
particular
environments
when
operated
incorrectly.)
n
Do not install the unit by yourself (user).
Incomplete installation could cause fire or electric shock, injury due to the
unit
falling,
or
leakage
of
water.
Consult
the
dealer
from
whom
you
pur-
chased the unit or a qualified installer
n
Perform the installation securely referring to the installation manual.
Incomplete installation could cause fire, electric shock, injury due to the
unit
falling,
or
leakage
of
water.
n
When installing the unit, use appropriate protective equipment and tools
for safety.
Failure
to
do
so
could
cause
injury.
n
Install the unit securely in a place which can bear the weight of the unit.
If
the
installation
location
cannot
bear
the
weight
of
the
unit,
the
unit
could
fall
causing
injury.
n
Electrical work should be performed by a qualified, experienced electri-
cian, according to the installation manual. Be sure to use an exclusive
circuit. Do not connect other electrical appliances to the circuit.
If the capacity of the power circuit is insuf
fi
cient or there is incomplete
electrical work, it could result in a fire or an electric shock
n
Do not damage the wires by applying excessive pressure with parts
or screws.
Damaged wires could cause fire or electric shock
n
Be sure to cut off the main power in case of setting up the indoor P.C.
board or wiring works.
Failure
to
do
so
could
cause
electric
shock.
n
Use the specified wires to connect the indoor and outdoor units se-
curely and attach the wires firmly to the terminal block connecting
sections so the stress of the wires is not applied to the sections.
Do
not extend the wires, or use intermediate connection.
Incomplete connecting and securing could cause fire
n
Do not install the unit in a place where inflammable gas may leak
If
gas
leaks
and
accumulates
in
the
area
around
the
unit,
it
could
cause
an
explosion.
n
Do not use intermediate connection of the power cord or the exten-
sion cord and do not connect many devices to one AC outlet.
It could cause a fire or an electric shock due to defective contact, defec-
tive
insulation,
exceeding
the
permissible
current,
etc.
n
Be sure to use the parts provided or specified parts for the installa-
tion 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
n
When plugging the power supply plug into the outlet, make sure
that there is no dust, clogging, or loose parts in both the outlet and
the plug. Make sure that the power supply plug is pushed complete-
ly into the outlet.
If
there
is
dust,
clogging,
or
loose
parts
on
the
power
supply
plug
or
the
outlet, it could cause electric shock or fire. If loose parts are found on the
power
supply
plug,
replace
it.
n
Attach the electrical cover to the indoor unit and the service panel
to the outdoor unit securely.
If
the
electrical
cover
of
the
indoor
unit
and/or
the
service
panel
of
the
outdoor unit are not attached securely, it could result in a
fi
re or an
electric
shock
due
to
dust,
water,
etc.
n
When installing, relocating, or servicing 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
and
may
result
in
explosion
or
injury.
The
use
of
any
re-
frigerant other than that specified for the system will cause mechanical
failure,
system
malfunction,
or
unit
breakdown.
In
the
worst
case,
this
could
lead
to
a
serious
impediment
to
securing
product
safety.
n
Do not discharge the refrigerant into the atmosphere. If refrigerant
leaks during installation, ventilate the room.
If refrigerant comes in contact with a
fi
re, harmful gas could be generated.
Refrigerant
leakage
may
cause
suffocation.
Provide
ventilation
in
accord-
ance
with
EN378-
.
n
Check that the refrigerant gas does not leak after installation has
been completed.
If refrigerant gas leaks indoors, and comes into contact with the flame
of
a
fan
heater,
space
heater,
stove,
etc.,
harmful
substances
will
be
generated.
n
Use appropriate tools and piping materials for installation.
The
pressure
of
R4
0A
is
.6
times
more
than
R22.
Not
using
appropri-
ate
tools
or
materials
and
incomplete
installation
could
cause
the
pipes
to
burst
or
injury.
n
When pumping down the refrigerant, stop the compressor before
disconnecting the refrigerant pipes.
If
the
refrigerant
pipes
are
disconnected
while
the
compressor
is
run-
ning
and
the
stop
valve
is
open,
air
could
be
drawn
in
and
the
pressure
in
the
refrigeration
cycle
could
become
abnormally
high.
This
could
cause
the
pipes
to
burst
or
injury.
n
When installing the unit, securely connect the refrigerant pipes
before starting the compressor.
If
the
compressor
is
started
before
the
refrigerant
pipes
are
connected
and
when
the
stop
valve
is
open,
air
could
be
drawn
in
and
the
pres-
sure
in
the
refrigeration
cycle
could
become
abnormally
high.
This
could
cause
the
pipes
to
burst
or
injury.
n
Fasten a
fl
are nut with a torque wrench as speci
fi
ed in this manual.
If fastened too tight, a
fl
are nut may break after a long period and cause
refrigerant
leakage.
n
The unit shall be installed in accordance with national wiring regu-
lations.
n
Earth the unit correctly.
Do
not
connect
the
earth
to
a
gas
pipe,
water
pipe,
lightning
rod
or
tel-
ephone
earth.
Defective
earthing
could
cause
electric
shock.
n
Install an earth leakage breaker depending on the installation place.
If
an
earth
leakage
breaker
is
not
installed,
it
could
cause
electric
shock.
n
Perform the drainage/piping work securely according to the installa-
tion manual.
If
there
is
defect
in
the
drainage/piping
work,
water
could
drop
from
the
unit,
soaking
and
damaging
household
goods.
n
Do not touch the air inlet or the aluminum fins of the outdoor unit
This
could
cause
injury.
n
Do not install the outdoor unit where small animals may live.
If
small
animals
enter
and
touch
the
electric
parts
inside
the
unit,
it
could cause a malfunction, smoke emission, or fire. Also, advise user
to
keep
the
area
around
the
unit
clean.
WARNING
(Could
lead
to
death,
serious
injury,
etc.)
*
Connect
to
the
power
switch
which
has
a
gap
of
3
mm
or
more
when
open
to
interrupt
the
source
power
phase.
(When
the
power
switch
is
shut
off,
it
must
interrupt
all
phases.)
*2
Use
wires
in
conformity
with
design
60245
IEC
57.
Use
the
indoor/out-
door connecting wire in conformity with the wire specifications specified in
the
installation
manual
of
the
indoor
unit.
*3 Never use pipes with thickness less than specified. The pressure resist-
ance will be insufficient
*4
Use
a
copper
pipe
or
a
copper-alloy
seamless
pipe.
*5
Be
careful
not
to
crush
or
bend
the
pipe
during
pipe
bending.
*6
Refrigerant
pipe
bending
radius
must
be
00
mm
or
more.
*7 Insulation material : Heat resisting foam plastic 0.045 specific gravit
*8 Be sure to use the insulation of specified thickness. Excessive thickness
may cause incorrect installation of the indoor unit and insufficient thick-
ness
may
cause
dew
drippage.
*9
If
the
outdoor
unit
is
installed
higher
than
the
indoor
unit,
max.
height
difference
is
reduced
to
0
m.
*
0
If
pipe
length
exceeds
40
m,
additional
refrigerant
(R4
0A)
charge
is
re-
quired.
(No
additional
charge
is
required
for
pipe
length
less
than
40
m.)
Additional
refrigerant
=
A
×
(pipe
length
(m)
-
40)
Required Tools for Installation
Phillips
screwdriver
Level
Scale
Utility
knife
or
scissors
Torque
wrench
Wrench
(or
spanner)
4
mm
hexagonal
wrench
Flare
tool
for
R4
0A
Gauge
manifold
for
R4
0A
Vacuum
pump
for
R4
0A
Charge
hose
for
R4
0A
Pipe
cutter
with
reamer
ENGLISH
CONTENTS
.
BEFORE
INSTALLATION
............................................................
2.
OUTDOOR
UNIT
INSTALLATION
...............................................4
3.
FLARING
WORK
AND
PIPE
CONNECTION
...............................5
4.
PURGING
PROCEDURES,
LEAK
TEST,
AND
TEST
RUN
......... 5
5.
RELOCATION
AND
MAINTENANCE
..........................................7
Model
Power
supply
*
Wire specifications *
Pipe
length
and
height
difference
*3,
*4,
*5,
*6,
*7,
*8
Rated
Voltage
Fre-
quency
Breaker
capacity Power
supply Indoor/outdoor
connecting
wire
Max.
pipe
length
per
indoor
unit
/
for
multi-system
Max.
height
difference
*9
Max.
no.
of
bends
per
indoor
unit
/
for
multi
system
Refrigerant
adjust-
ment
A
*
0
230
V 50
Hz
25
A
3-core
2.5
mm
2
4-core
.0
/
.5
mm
2
25
m
/
70
m
5
m
25
/
70
20
g/m
25
m
/
80
m
5
m
25
/
80
JG79A662H01_en.indd 1
2012/09/24 (月) 午後 7:00:02
