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Contents
1.
Safety
precautions.
0...
eee
2
2.
Installation
diagram
&
parts...
2...
eee
3
3.
Installation
location
00.
ee
4
4.
Installing
the
outdoor
unit
0...
eee
6
5.
Installing
the
refrigerant
piping
...
2.0.02.
ee
6
1.
Safety
precautions
6.
Drainage
piping
work.
0.0...
eee
10
7.
Electrical
work.
00.
ee
10
B.
Testun
ee
14
9.
Special
Functions
...
0.0...
0.
eee
15
»
Before
installing
the
unit,
make
sure
you
read
ali
the
“Safety
precau-
tions”.
»
Please
report
to
or
take
consent
by
the
supply
authority
before
connec-
tion
to
the
system.
AN
Warning:
Describes
precautions
that
must
be
observed
to
prevent
danger
of
injury
or
death
to
the
user.
A\
Caution:
Describes
precautions
that
must
be
observed
to
prevent
damage
to
the
unit.
After
installation
work
has
been
completed,
explain
the
“Safety
Precautions,”
use,and
maintenance
of
the
unit
to
the
customer
according
to
the
information
in
the
Operation
Manual
and
perform
the
test
run
to
ensure
normal
operation.
Both
the
Installation
Manual
and
Operation
Manual
must
be
given
to
the
user
for
keeping.
These
manuals
must
be
passed
on
to
subsequent
users.
©
:
Indicates
a
part
which
must
be
grounded.
AN
Warning:
Carefully
read
the
labels
affixed
to
the
main
unit.
ZN
Warning:
The
unit
must
not
be
installed
by
the
user.
Ask
a
dealer
or
an
authorized
technician
to
install
the
unit.
If
the
unit
is
installed
incorrectiy,
water
leak-
age,
electric
shock,
or
fire
may
result.
For
installation
work,
follow
the
instructions
in
the
Installation
Manual
and
use
tools
and
pipe
components
specifically
made
for
use
with
R410A
refrigerant.
The
R410A
refrigerant
in
the
HFC
system
is
pressurized
1.6
times
the
pressure
of
usual
refrigerants.
If
pipe
components
not
designed
for
R410A
refrigerant
are
used
and
the
unit
is
not
installed
correctly,
the
pipes
may
burst
and
cause
damage
or
injuries.
In
addition,
water
leakage,
electric
shock,
or
fire
may
result.
«
The
unit
must
be
installed
according
to
the
instructions
in
order
to
minimize
the
risk
of
damage
from
earthquakes,
typhoons,
or
strong
winds.
An
incor-
rectly
installed
unit
may
fall
down
and
cause
damage
or
injuries.
The
unit
must
be
securely
installed
on
a
structure
that
can
sustain
its
weight.
If
the
unit
is
mounted
on
an
unstable
structure,
it
may
fall
down
and
cause
damage
or
injuries.
If
the
air
conditioner
is
installed
in
a
small
room,
measures
must
be
taken
to
prevent
the
refrigerant
concentration
in
the
room
from
exceeding
the
safety
limit
in
the
event
of
refrigerant
leakage.
Consult
a
dealer
regarding
the
appropri-
ate
measures
to
prevent
the
allowable
concentration
from
being
exceeded.
Should
the
refrigerant
leak
and
cause
the
concentration
limit
to
be
exceeded,
hazards
due
to
lack
of
oxygen
in
the
room
may
result.
Ventilate
the
room
if
refrigerant
leaks
during
operation.
If
refrigerant
comes
into
contact
with
a
flame,
poisonous
gases
will
be
released.
All
electric
work
must
be
performed
by
a
qualified
technician
according
to
local
regulations
and
the
instructions
given
in
this
manual.
The
units
must
be
powered
by
dedicated
power
lines
and
the
correct
voltage
and
circuit
breakers
must
be
used.
Power
lines
with
insufficient
capacity
or
incorrect
electrical
work
may
resuit
in
electric
shock
or
fire.
Be
sure
to
connect
the
power
supply
cords
and
the
connecting
wires
for
the
indoor
units,
outdoor
units,
and
branch
boxes
directly
to
the
units
(no
intermediate
connections).
Intermediate
connections
can
lead
to
communication
errors
if
water
enters
the
cords
or
wires
and
causes
insufficient
insulation
to
ground
or
a
poor
electrical
contact
at
the
intermediate
connection
point.
(If
an
intermediate
connection
is
necessary,
be
sure
to
take
measures
to
prevent
water
from
entering
the
cords
and
wires.)
Use
C1220
copper
phosphorus,
for
copper
and
copper
alloy
seamless
pipes,
to
connect
the
refrigerant
pipes.
If
the
pipes
are
not
connected
cor-
rectly,
the
unit
will
not
be
properly
grounded
and
electric
shock
may
result.
Use
only
specified
cables
for
wiring.
The
connections
must
be
made
securely
without
tension
on
the
terminals.
If
the
cables
are
connected
or
installed
incorrectly,
overheating
or
fire
may
result.
The
terminal
block
cover
panel
of
the
outdoor
unit
must
be
firmly
attached.
If
the
cover
panel
is
mounted
incorrectly and
dust and
moisture
enter
the
unit,
electric
shock
or
fire
may
result.
When
installing
or
moving
the
air
conditioner,
use
only
the
specified
refrig-
erant
(R410A)
to
charge
the
refrigerant
lines.
Do
not
mix
it
with
any other
refrigerant
and
do
not
allow
air
to
remain
in
the
lines.
Air
enclosed
in
the
lines
can
cause pressure peaks
resulting
in
a
rupture
and
other
hazards.
Use
only
accessories
authorized
by
Mitsubishi
Electric
and
ask
a
dealer
or
an
authorized
technician
to
install
them.
If
accessories
are
incorrectly
installed,
water
leakage,
electric
shock,
or
fire
may
result.
Do
not
alter
the
unit.
Consult
a
dealer
for
repairs.
If
alterations
or
repairs
are
not
performed
correctly,
water
leakage,
electric
shock,
or
fire
may
result.
The
user
should
never
attempt
to
repair
the
unit
or
transfer
it
to
another
location.
If
the
unit
is
installed
incorrectly,
water
leakage,
electric
shock,
or
fire
may
result.
If
the
air
conditioner
must
be
repaired
or
moved,
ask
a
dealer
or
an
authorized
technician.
After
installation
has
been
completed,
check
for
refrigerant
leaks.
If
refriger-
ant
leaks
into
the
room
and
comes
into
contact
with
the
flame
of
a
heater
or
portable
cooking
range,
poisonous
gases
will
be
released.
1.1.
Before
installation
&\
Caution:
Do
not
use
the
unit
in
an
unusual
environment.
If
the
air
conditioner
is
installed
in
areas
exposed
to
steam,
volatile
oil
(including
machine
oil),
or
sulfuric
gas,
areas
exposed
to
high
salt
content
such
as
the
seaside,
or
areas
where
the
unit
will
be
covered
by
snow,
the
performance
can
be
significantly
reduced
and
the
internal parts
can
be
damaged.
Do
not
instali
the
unit
where
combustible
gases
may
leak, be
produced,
flow,
or
accumulate.
If
combustible
gas
accumulates
around
the
unit,
fire
or
explosion
may
result.
The
outdoor
unit
produces
condensation
during
the
heating
operation.
Make
sure
to
provide
drainage
around
the
outdoor
unit
if
such
condensation
is
likely
to
cause
damage.
When
installing
the
unit
in
a
hospital
or
communications
office,
be
prepared
for
noise and
electronic
interference.
Inverters,
home
appliances,
high-
frequency
medical
equipment,
and
radio
communications
equipment
can
cause
the
air
conditioner
to
malfunction
or
breakdown.
The
air
conditioner
may
also
affect
medical
equipment,
disturbing
medical
care,
and
communi-
cations
equipment,
harming
the
screen
display
quality.
1.2.
Before
installation
(relocation)
A\
Caution:
¢
Be
extremely
careful
when
transporting
the
units.
2
or
more
persons
are
needed
to
handle
the
unit,
as
it
weighs
20
kg,
44
ibs
or
more.
Do
not
grasp
the
packaging
bands.
Wear
protective
gloves
to
remove
the
unit
from
the
packaging
and
to
move
it,
as
you
can
injure
your
hands
on
the
fins
or
the
edge
of
other
parts.
«
Be
sure
to
safely
dispose
of
the
packaging
materials.
Packaging
materials,
such
as
nails
and
other metal
or
wooden
parts
may
cause
stabs
or
other
injuries.
The
base
and
attachments
of
the
outdoor
unit
must
be
periodically
checked
for
looseness,
cracks
or
other
damage.
If
such
defects
are
left
uncorrected,
the
unit
may
fall
down
and
cause
damage
or
injuries.
¢
Do
not
clean
the
air
conditioner
unit
with
water.
Electric
shock
may
result.
Tighten
all
flare
nuts
to
specification
using
a
torque
wrench.
If
tightened
too
much,
the
flare
nut
can
break
after an
extended
period
and
refrigerant
can
leak
out.
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