SG79Y952H03
MITSUBISHI
ELECTRIC
SPLIT-TYPE
AIR
CONDITIONERS
INSTALLATION
MANUAL
When
installing
multi
units,
refer
to
the
installation
manual
of
the
multi
unit
for
outdoor
unit
installation.
Model
names
are
indicated
in
1-3.
Required
Tools
for
Installation
Phillips
screwdriver
5/32
in.
(4
mm)
hexagonal
wrench
Level
Flare
tool
for
RA10A
Scale
Gauge
manifold
for
R410A
Utility
knife
or
scissors
Vacuum
pump
for
R410A
2-9/16
in.
(65
mm)
hole
saw
Charge
hose
for
R410A
Torque
wrench
Pipe
cutter
with
reamer
Wrench
(or
spanner)
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.
Please
report
to
your
supply
authority
or
obtain
their
consent
before
connecting
this
equipment
to
the
power
supply
system.
.
.
.
A
WARNING
(Could
lead
to
death,
serious
injury,
etc.)
@
Do
not
install
the
unit
by
yourself
(user).
Incomplete
installation
could
cause
fire
or
electric
shock,
injury
due
to
the
unit
fall-
ing,
or
leakage
of
water.
Consult
the
dealer
from
whom
you
purchased
the
unit
or
a
qualified
installer.
@
Perform
the
installation
securely
referring
to
the
installation
manual.
Incomplete
installation
could
cause
fire
or
electric
shock,
injury
due
to
the
unit
fall-
ing,
or
leakage
of
water.
@ 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.
@
Perform
electrical
work
according
to
the
installation
manual
and
be
sure
to
use
an
exclusive
circuit.
Do
not
connect
other
electrical
appliances
to
the
circuit.
lf
the
capacity
of
the
power
circuit
is
insufficient
or
there
is
incomplete
electrical
work,
it
could
result
in
a
fire
or
an
electric
shock.
@
Ground
the
unit
correctly.
Do
not
connect
the
ground
to
a
gas
pipe,
water
pipe,
lightning
rod
or
telephone
ground.
Defective
grounding
could
cause
electric
shock.
@
Do
not
damage
the
wires
by
applying
excessive
pressure
with
parts
or
screws.
Damaged
wires could
cause
fire.
@
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.
&
Use
the
specified
wires
to
connect
the
indoor
and
outdoor
units
securely
and
attach
the
wires
firmly
to
the
terminal
block
connecting
sections
so
the
stress
of
the
wires
is
not
applied
to
the
sections.
Incomplete connecting
and
securing
could
cause
fire.
@
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
explo-
sion.
@
Do
not
use
intermediate
connection
of
the
power
cord
or
the
extension
cord
and
do
not
connect
many
devices
to
one
AC
outlet.
It
could
cause
a
fire
or
an
electric
shock
due
to
defective
contact,
defective
insula-
tion,
exceeding
the
permissible
current,
etc.
@
Be
sure
to
use
the
parts
provided
or
specified
parts
for
the
installation
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.
@
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
completely
into
the
outlet.
lf
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.
#
CAUTION
(Could
lead
to
serious
injury
in
particular
environments
when
operated
incorrectly.)
&
Install
a
Ground
Fault
Interrupt
(GF)
circuit
breaker
depending
on
the instal-
lation
place.
lf
the
Ground
Fault
Interrupt
(GFI)
circuit
breaker
is
not
installed,
it
could
cause
electric
shock.
@
Perform
the
drainage/piping
work
securely
according
to
the
installation
manual.
Hf
there
is
defect
in
the
drainage/piping
work,
water
could
drop
from
the
unit,
soak-
ing
and
damaging
household
goods.
&
Attach
the
electrical
cover
to
the
indoor
unit
and
the
service
panel
to
the
@
The
unit
shall
be
installed
in
accordance
with
national
wiring
regulations.
@
Do
not
touch
the
air
inlet or
the
aluminum
fins
of
the
outdoor
unit.
@
Do
not
install
the
outdoor
unit
where
small
animals
may
live.
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
fire
or
an
electric
shock
due
to
dust,
water,
etc.
When
installing
or
relocating
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
or
an
explosion.
Do
not
discharge
the
refrigerant
into
the
atmosphere.
If
refrigerant
leaks
during
installation,
ventilate
the
room.
If
refrigerant
comes
in
contact
with
a
fire,
harmful
gas could
be
generated.
Check
that
the
refrigerant gas
does
not
leak
after
installation
has
been
com-
pleted.
lf
refrigerant
gas
leaks
indoors,
and
comes
into
contact
with
the
flame
of
a
fan
heater,
space
heater,
stove,
etc.,
harmful
substances
will
be
generated.
Use
appropriate
tools
and
piping
materials
for
installation.
The
pressure
of
R410A
is
1.6
times
more
than
R22.
Not
using
appropriate
tools
or
materials
and
incomplete
installation
could
cause
the
pipes
to
burst
or
injury.
When
pumping
down
the
refrigerant,
stop
the
compressor
before
discon-
necting
the
refrigerant
pipes.
lf
the
refrigerant
pipes
are
disconnected
while
the
compressor
is
running
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.
When
installing
the
unit,
securely
connect
the
refrigerant
pipes
before
start-
ing
the
compressor.
lf
the
compressor
is
started
before
the
refrigerant
pipes
are
connected
and
when
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.
Fasten
a
flare
nut
with
a
torque
wrench
as
specified
in
this
manual.
Hf
fastened
too
tight,
a
flare
nut
may
break
after
a
long
period
and
cause
refrigerant
leakage.
This
could
cause
injury.
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.
ae
1-2.
SELECTING
THE
INSTALLATION
LOCATION
INDOOR
UNIT
*
Where
airflow
is
not
blocked.
+
Where
cool
air
spreads
over
the
entire
room.
*
Rigid
wall
without
vibration.
+
Where
it
is
not
exposed
to
direct
sunshine.
+
Where
easily
drained.
*
Ata
distance
3
ft.
(1
m)
or
more
away
from your
TV
and
radio.
Operation
of
the
air
conditioner
may
inter-
fere
with
radio
or
TV
reception.
An
amplifier
may
be
required
for
the
affected
device.
*
Ina
place
as
far
away
as
possible
from
fluorescent
and
incandescent
lights
(so
the
infrared
remote
control
can
operate
the
air
conditioner
normally).
*
Where
the
air
filter
can
be
removed
and
replaced
easily.
Note:
Install
indoor
unit
at
a
high
position
on
the
wall
where
air
can
distribute
over
the
entire
room.
*
Where
itis
easy
to
operate
and
easily
visible.
*
Where
children
cannot
touch
it.
*
Select
a
position
about
4
ft.
(1.2
m)
above
the
floor
and
check
that
signals
from
the
remote
controller
are
surely
received
by
the
indoor
unit
from
that
position
(beep’
or
‘beep beep’
receiving
tone
sounds).
After
that,
attach
remote
controller
holder
to
a
pillar
or
wall
and
install
wireless
remote
controller.
1-3.
SPECIFICATIONS
1-3-1.
POWER
SUPPLY
AND
INDOOR/OUTDOOR
WIRE
CONNECTION
*
Power
should
be
taken
from
an
exclusive
branched
circuit.
*
Wiring
work
should
be
based
on
applicable
technical
standards.
*
Wiring
connections
should
be
made
following
the
diagram.
*
Screws
should
be
tightened
so
they
will
not
loosen.
Connecting
wires
and
connecting
ground
wire
«
Use
solid
conductor
AWG14
or
stranded
conductor
AWG14.
*
Use
double
insulated
copper
wire
with
GOOV
insulation.
*
Use
copper
conductors
only.
*
Follow
local
electrical
code.
Power
supply
cable
and
ground
wire
*
Use
solid
or
stranded
conductor
AWG14.
*
Use
copper
conductors
only.
*
Follow
local
electrical
code.
Note:
In
rooms
where
inverter
type
fluorescent
lamps
are
used,
the
signal
from
the
wireless
remote
controller
may
not
be
received.
+
Where
itis
not
exposed
to
strong
wind.
+
Where
airflow
is
good
and
dustless.
*
Where
neighbours
are
not
annoyed
by
operation
sound
or
hot
air.
*
Where
rigid
wall
or
support
is
available
to
prevent
the
increase
of
operation
sound
or
vibration.
*
Where
there
is
no
risk
of
combustible
gas
leakage.
+
When
installing
the
unit
at
a
high
level,
be
sure
to
se-
cure
the
unit
legs.
+
Where
it
is
at
least
10
ft.
(3
m)
away
from
the
antenna
of
TV
set
or
radio.
Operation
of
the
air
conditioner
may
interfere
with
radio
or
TV
reception
in
areas
where
re-
ception
is
weak.
An
amplifier
may
be
required
for
the
affected
device.
*
Install
the
unit
horizontally.
*
Please
install
it
in
an
area
not
affected
by
snowfall
or
blowing
snow.
In
areas
with
heavy
snow,
please
install
a
canopy,
a
pedestal
and/or
some
baffle
boards.
Electrical
specifications
Note:
*
tis
advisable
to
make
a
piping
loop
near
outdoor
unit
so as
to
reduce
vibration
transmitted
from
there.
*
For
increased
efficiency,
install
the
outdoor
unit
in
a
location
where
continuous
direct
sunlight
or
excessive
water
can
be
avoided
as
much
as
possible.
Note:
When
operating
the
air
conditioner
in
low
outside
temperature,
be
sure
to
follow
the
instructions
described
below.
*
Never
install
the
outdoor
unit
in
a
place
where
its
air
inlet/outlet
side
may
be
exposed
directly
to
wind.
*
To
prevent
exposure
to
wind,
install
the
outdoor
unit
with
its
air
inlet
side
facing
the
wall.
*
To
prevent
exposure
to
wind,
it
is
recommended
to
in-
stall
a
baffle
board
on
the
air
outlet
side
of
the
outdoor
unit.
Avoid
the
following
places
for
installation
where
air
conditioner
trouble
is
liable
to
occur.
*
Where
flammable
gas could
leak.
*
Where
there
is
much
machine
oil.
*
Salty
places
such
as
the
seaside.
«
Where
sulfide
gas
is
generated
such
as
a
hot
spring.
«
Where
there
is
high-frequency
or
wireless
equipment.
Note:
When
the
indoor
unit
is
powered
from
the
outdoor
unit,
a
disconnect
switch
needs
to
be
installed
to
power
supply
circuit
(between
indoor and
outdoor
unit)
depending
on
local
code.
1-3-2.
REFRIGERANT
PIPES
*
Ensure
that
the
2
refrigerant
pipes
are
insulated
to
prevent
condensation.
*
Refrigerant
pipe
bending
radius
must
be
4
in.
(100
mm)
or
more.
A\
CAUTION
Be
sure
to
use
the
insulation
of
specified
thickness.
Excessive
thickness
may
cause
incorrect
installation
of
the
indoor
unit
and
lack
of
thickness
may
cause
dew
drippage.
*
This
unit
has
flared
connections
on
both
indoor
and
outdoor
sides.
*
Remove
the
outdoor
units
valve
cover,
then
connect
the
pipe.
*
Refrigerant
pipes
are
used
to
connect
the
indoor
and
outdoor
units.
*
Be
careful
not
to
crush
or
bend
the
pipe
in
pipe
bending.
*
Refrigerant
adjustment...
lf
pipe
length
exceeds
25
ft.
(7
(R410A)
charge
is
required.
(The
outdoor
unit
is
charged
with
refrigerant
for
pipe
length
up
to
25
ft.
[7
m])
MSz-
MSzZ-
A15M7NA
MS-
MS-
MODEL
Aogi2NA|
mMSY-
|
Aogwa
|
A12WA
A15M7NA
INDOOR
UNIT
Power
supply
(V,
PHASE,
Hz)
208/230,
1,
60
115,
1,
60
Min.
Circuit
Ampacity
10
|
1.0
12
|
1.2
Fan
motor
(F.L.A.)
0.76
0.95
OUTDOOR
UNIT
Power
supply
(V,
PHASE,
Hz)
208/230,
1,
60
115,
1,
60
Max.
Fuse
size
(time
delay)
(A)
15
15
15
20
Min.
Circuit
Ampacity
12 14 14 16
Fan
motor
(F.L.A.)
0.52 0.52 0.63
0.926
(R.L.A)
7.8
10.1
9.30
10.82
Compressor
(L.R.A)
9.2
12
47
56
Indoor
unit
-
Remote
Indoor
unit
-
Remote
controller:
(Wireless)
controller:
(Wireless)
Control voltage
Indoor
unit
-
Outdoor
Indoor
unit
-
Outdoor
unit:
DC12-24V
(Polar)
unit:
AC115V
Outside
van
Insulation
.
Pipe
diameter
thickness
|
[nsulation
mate-
ness
rial
inch
(mm)
we
0.0315
For
liquid 1/4
(6.35)
(0.8)
5/16
(8)
MSZ-
AOS2NA
|
3/8
(9.52)
08)
5/16
(8)
|
Heat
resisting
MS-AO9WA
‘
foam
plastic
0.045
Specific
For
gas
|
MSZ-
ravit
.
A15/17NA
0.0315
gravity
MSY-A15/
|
1/2
(12.7)
(0.8)
5/16
(8)
17NA
,
MS-A12WA
a
MSZ-A09/1
2/1
5/17NA
Limits
MSY-A15/417NA
MS-A09/12WA
Pipe
length
65ft.
(20
m)
max.
65ft.
(20
m)
max.
Height
difference
40
ft.
(12
m)
max.
35
ft.
(10
m)
max.
m),
additional
refrigerant
No.
of
bends
10
max.
10
max.
Up
to
25
ft.
(7m)
No
additional
charge
is
required.
Pipe
length
:
Additional
charge
is
required.
Exceeding
26
ft.
(7m)
(Refer
to
the
table
below.)
MSZ-A09/12/15/17NA
1.62
oz
each
5
ft.
(30g/m)
Refrigerant
to
be
MSY-A1S/17NA
added
MS-A09/12WA
1.08
oz.
each
5
ft.
(20g/m)
1-4.
INSTALLATION
DIAGRAM
ACCESSORIES
Check
the
following
parts
before
installation.
<Indoor
unit>
(1)
|
Installation
plate
1
(2)
|
Installation
plate
fixing
screw
4
x
25
mm
5
(3)
|
Remote
controller
holder
1
(4)
|
Fixing
screw
for
(3)
3.5
x
16
mm
(Black)
2
(5)
|
Battery
(AAA)
for
(6)
2
(6)
|
Wireless
remote
controller
1
(7)
|
Felt
tape
(For
left
or
left-rear
piping)
1
(8)
|
Air
cleaning
filter
1
PARTS
TO
BE
PROVIDED
AT
YOUR
SITE
(A)
|
indoor/outdoor
unit
connecting
wire*
1
(B)
|
Extension
pipe
1
(C)
|
Wall hole
sleeve
1
(D)
|
Wall hole
cover
1
(E)
|
Pipe
fixing
band
2to5
(F)
|
Fixing
screw
for
(E)
4
«
20
mm
2to5
(G)
|
Piping
tape
1
(H)
|
Putty
1
Drain
hose
(1)
|
(or
soft
PVC
hose,
19/32
in.
[15
mm] |
2
to5
inner
dia.
or
hard
PVC
pipe
VP16)
(J)
|
Refrigeration
oil
1
(K)
|
Power
supply
cord
1
*
Note:
Place
indoor/outdoor
unit
connecting
wire
(A)
and
power
supply
cord
(K)
at
least
3
ft.
(1m)
away
from
the
TV
antenna
wire.
Units
should
be
installed
by
licensed
contractor
according
to
local
code
requirements.
{68
men)
~17/32
in.
(115
or
more
for
left
and
2-19/32
in.
or
more/
4.
)
left
back
piping
(using
spacer)
mm
Open
two
sides
of
left,
right,
or
rear
side.
Be
sure
to
use
wall
hole
sleeve
(C)
to
prevent
indoor/outdoor
connecting
wire
(A)
from
contacting
metal
parts
in
the
wall
and
to
prevent
damage
by
rodents
in
case
the
wall
is
Z|
Wall
hole
cover
(D)
Indoor
unit
Wall
hole
sieeve
(C)
Fix
the
pipe
to
wail
with
pipe
fixing
Cut
off
the
extra
length.
Pipe
fixing
band
(E)
Fixing
screw
(F)
Basically
open
4
in.
in
31-1/2
sides
of
the
unit.
(100
mm)
or
more
without any
obstruction
front
and
on
beth
4in.
(100
mm)
or
more
Unit:
inch
13-9/16
41-1/4
19-11/16
ssh
|,
Air inlet
Sa]
12
12-3/4|
800
1-9/16
Unit:
mm
150
|
500
a_
Air inlet
44,
285
]
304-325
2-10
mm
x
21
mm
siot
ge
“4
&
Air
outlet
40
COC
(
After
the
leak
test,
apply
insulating
mate-
rial
tightly
so
that
there
is
no
gap.
When
the
piping
is
to
be
attached
to
a
wall
containing
metals
(tin
plated)
or
metal
netting,
use
a
chemically
treated
wooden
piece
25/32
in.
(20
mm)
or
thicker
between
the
wall
and
the
piping
or
wrap
7
to
8
turns
of
insulation
vinyl
tape
around
the
piping.
To
use
existing
piping,
perform
COOL
operation
for
30
minutes
and
pump
down
before
removing
the
old
air
conditioner.
Remake
flare
according
to
the
dimension
for
new
refrigerant.
4
in.
(100
mm)
or
more
(16h
in,
07.
o,
“moin)
ef
Open
two
sides
of
left,
right,
or
rear
side.
Unit:
inch
33-7/16
yy
3
i
—
oe
pe
-F
i
2
|
|
g
S
>
gl
=
on
=
wa
FE
=
—
-
—-
air
outlet
\
zt
\
6
VOTING
a
318
x
13/16
slot
Unit:
mm
850
2
| |
,
fo]
—-—-—-
=
Q
S
Ss
S
1 1
3S
==
—
=
>
<}
Air
outlet
500
4-310
mm
x
21
mm
slot
2.
INDOOR
UNIT
INSTALLATION
2-1.
FIXING
OF
INSTALLATION
PLATE
*
Find
a
structural
material (such
as
a
stud)
in
the
wall
and
fix
installation
plate
(1)
horizon-
tally
with
fixing
screws
(2).
*
To
prevent
installation
plate
(1)
from
vibrating,
be
sure
to
install
the
fixing
screws
in
the
holes
indicated
in
the
illustration.
For
added
support,
fixing
screws
may
also
be
installed
in
other
holes.
*
When
bolts
recessed
in
the
concrete
wall
are
to
be
utilized,
secure
installation
plate
(1)
using
7/16
in.
x
13/16
in:
7/16
in. x
1
in.
(41
mm
*
20
mm
-
14
mm
*
26
mm)
oval hole
(17-3/4
in.
[450
mm]
pitch).
*
If
the
recessed
bolt
is
too
long,
change
it
for
a
shorter
one
available
in
the
market.
2-2.
WALL
HOLE
DRILLING
1)
Determine
the
wall
hole
position.
2)
Drill
a
dia.
2-9/16
in.
(65
mm)
hole.
The
outdoor
side
should
be
6/32
to
9/32
in.
(5 to
7
ram)
lower
than
the
indoor
side.
3)
Insert
wall
hole
sleeve
(C).
2-3.
CONNECTING
WIRES
FOR
INDOOR
UNIT
Note:
When
the
indoor
unit
is
powered
from
the
outdoor
unit,
a
disconnect
switch
needs
to
be
in-
stalled
to
power
supply
circuit
(between
indoor
and
outdoor
unit)
depending
on
local
code.
Remove
the
front
panel.
(Refer
to
5-1.)
Hook
the
upper
part
of
the
indoor
unit
on
the
installation
plate.
Remove
corner
box
and
conduit
cover.
Fix
conduit
pipe
(for
rear
piping)
/
elbow
joint
(for
right,
left,
or
downward
piping)
to
con-
duit
cover
with
lock
nut.
The
thread
part
of
installed
conduit
pipe
/
elbow
joint
appearing
inside
should
be
less
than
3/8
in.
(10
mm).
(Fig.
1)
Elbow
joint
should
appear
less
than
4-3/16
in.
(30
mm)
outside.
(Fig.
2)
5)
Process
the
end
of
ground
wire
(Fig.
3).
Connect
it
to
the
ground
terminal
of
electrical
parts
box.
6)
Process
the
end
of
indoor/outdoor
unit
connecting
wire
(A)
(Fig.
3).
Fix
it
to
terminal
block.
Be
careful
not
to
make
mis-wiring.
Fix
the
wire
to
the
terminal
block
securely
so
that
no
part
of
its
core
is
appeared,
and
no
external
force
is
conveyed
to
the
connecting
section
of
the
terminal
block.
7)
Firmly
tighten
the
terminal
screws
to
prevent
them
from
loosening.
After
tightening,
pull
the
wires
lightly
to
confirm
that
they
do
not
move.
8)
Secure
indoor/outdoor
unit
connecting
wire
(A)
and
the
ground
wire
with
conduit
cover.
Never
fail
to
hook
the
claw
of
the
conduit
cover
to
the
electrical
box.
Attach
the
conduit
cover
securely.
(Fig.
4)
9)
According
to
the
piping
direction,
cut
off
the
shaded
part
of
the
left
side
of
box
(Fig.
5)
or
corner
box
(Fig.6).
Reinstall
corner
box
and
front
panel.
i
ee
Pay
1)
2)
3)
4)
INDOOR
UNET
Grounding
Remark:
-
terminal**
*
Adisconnect
switch
should
Terminal
block
|
be
required.
Oo
“
Use
a
ring
tongue
terminal
in
order
to
connect
a
ALG
Disconnect
ground
wire
to
terminal.
i
—-T™
switch*
115V
AC
tphase,
60Hz
OUTDOOR
UNIT
t1SV
AC
Power
supply
|
.
115V
AC,
ie
ye]
iphase,
60H:
iphase
2wires,
|—o
60Hz
.
Ground
Grounding
terminal**
Eee
W
rar
INDOOR
UNIT
.
yar
WP
WW
rat
-
Grounding
Terminal
block
|terminal**
|
Remark
Oo
*
Adisconnect
switch
should
Sis2sg
be
required.
:
f.J--4.
1
Disconnect
“
Use
a
ring
tongue
terminal
i
eT
gswitch*
in
order
to
connect
a
208/230V
AC
©
ground
wire
to
terminal.
iphase,
60Hz
OUTDOOR
UNIT
Power
supply
208/230V
AC,
io
= x
iphase
2wires,
|
o3
60Hz
Lt
Ground
Grounding
terminal**
Z
Installation
plate
(1)
Sin.
{75
mm)
or
more
Wall
Align
the
plumb
Fixing
screw
(2)
fine
with
the
mark
Papeper
ie
Ceiling
Bind
the
line
to
the
center
hole.
Level
>
2-19/32
in.
(66
mm)
or
more
4-17/32
in.
(115
mm)
or
more
for
left
and
left
back
piping
(using
spacer)
s
as674
7
OST
Bo
a]
3
in.
o
yee
OF
(75
mm)
°
=
414A
°
-{
ormore
° .
.
f-«—_—___»
[oe
—=
(100
mm)
insert
Align
the
the
scale
with
Center
of
dia.
scale.
*_
|[
the
line.
*
2-9/16
in.
picea
(65
mm)
hole
*
Same
for
left
hole
©
2-9/16
in.
(65
mm)
Outdeor
side
6—_—____——
Lock
nut
Fixing
J
Ly
screw
og
|
.
Conduit
pipe
(for
rear
piping)
Conduit
cover
a
€»,
Elbow
joint
“<2
(for
right,
left,
or
downward
piping)
*
Connect
wires
to
the
matching
numbers
of
terminals
For
future
servicing,
give
extra
length
to
the
connecting
wires.
.
Indoor
terminal
block
Conduit
cover
(10
mm)
Lock
nut
Conduit
pipe
or
elbow
joint
Fi
ig.
Less
than
3/8
in.
1
Zt
(30
mm)
(for
right,
left,
or
downward
piping)
Less
than
1-3/16
in.
Elbow
joint
Fig.
2
.
19/32
in.
1in.
{15
mm)
{25
mm)
Lead
a
wire
Make
ground
wire
a
little
longer
than
others.
(More
than 1-9/16
in.
[40
mm])
Fig.
3
Hook
Conduit
cover
Fig.
4
Cut
off
in
case
of
left
piping
Cut
off
in
case
of
left-downward
piping
Fig.
5
Cut
off
in
case
of
downward
piping
Corner
box
4
in.
(25
mm)
Cut
off
in
case
of
right
piping
Fig.
6
2-4,
PIPE
FORMING
AND
DRAIN
PIPING
2-4-1.
PIPE
FORMING
*
Place
the
drain
hose below
the
refrigerant
piping.
*
Make
sure
that
the
drain
hose
is
not
heaved
or
snaked.
*
Do
not
pull
the
hose
when
applying
the
tape.
«
When
the
drain
hose
passes
the
room,
be
sure
to
wrap
insulation
material
(obtainable
at
a
store)
around
it.
Note:
Screws
may
damage
the
cover
of
refrigerant
pipe
during
left
piping.
Make
sure
not
to
damage
the
cover
of
refrigerant
pipe.
Left
or
left-rear
piping
Note:
Be
sure
to
reattach
the
drain
hose
and
the
drain
cap
in
case
of
left
or
left-rear
piping.
Otherwise,
it
could
cause
drops
of
water
to
drip
down
from
the
drain
hose.
1)
Put
the
refrigerant
piping
and
the
drain
hose
together,
then
firmly
apply
felt
tape
(7)
from
the
end.
Felt
tape
(7)
overlap
width
should
be
1/3
the
tape
width.
Use
a
bandage
stopper
at
the
end
of
felt
tape
(7).
2)
Pull
out the
drain
cap
at
the
rear
right
of
the
indoor
unit.
(Fig.
1)
*
Hold
the
convex
section
at
the
end and
pull
the
drain
cap.
3)
Pull
out the
drain
hose
at
the
rear
left
of
the
indoor
unit.
(Fig.
2)
*
Hold
the
claw
marked
by
the
arrows
and
pull
out the
drain
hose
forward.
4)
Put
the
drain
cap
into
the
section
to
which
the
drain
hose
is
to
be
attached
at
the
rear
of
the
indoor
unit.
(Fig.
3)
*
Insert
not
sharp-edged
tools
such
as
screwdrivers
into
the
hole
at
the
end
of
the
cap
and
insert
the
cap
fully
into
the
drain
pan.
5)
Insert
the
drain
hose
fully
into
the
drain
pan
at
the
rear
right
of
the
indoor
unit.
(Fig.
4)
*
Check
if
the
hose
is
hooked
securely
to
the
projection
of
its
inserting
part
at
the
drain
pan.
6)
Insert
the
drain
hose
into
wall
hole
sleeve
(C),
and
hook
the
upper
part
of
indoor
unit
on
installation
plate
(1).
Then,
move
the
indoor
unit
completely
to
the
left
in
order
to
make
placing
the
piping
in
the
back
space
of
the
unit
easier.
7)
Cut
out
a
piece
of
cardboard
from
the
shipping
box,
roll
it
up,
hook
it
onto
the
back
rib,
and
use
it
as
a
spacer
to
lift
the
indoor
unit.
(Fig.
5)
8)
Connect
the
refrigerant
piping
with
the
extension
pipe
(B).
9)
Thrust
the
lower
part
of
the
indoor
unit into
the
installation
plate
(1).
Rear
or
downward
piping
4)
Put
the
refrigerant
piping
and
the
drain
hose
together,
then
firmly
apply
piping
tape
(G)
from
the
end.
2)
Insert
the
piping
and
the
drain
hose
into
the
wall
hole
sleeve
(C),
and
hook
the
upper
part
of
the
indoor
unit
on
the
installation
plate
(1).
3)
Check
if
the
indoor
unit
is
hooked
securely
on
the
installation
plate
(1)
by
moving
the
unit
to
left
and
right.
4)
Thrust
the
lower
part
of
the
indoor
unit into
the
installation
plate
(1).
Right
piping
Note:
Before
performing
the
following,
make
sure
that
wiring
is
completed,
and
the
conduit
cover
is
installed.
(Refer
to
2-3.)
4)
Put
the
refrigerant
piping
and
the
drain
hose
together,
position
them
to
left
side,
and
then
firmly
apply
piping
tape
(G)
from
the
end.
2)
Insert
the
piping
and
the
drain
hose
into
the
wall
hole
sleeve
(C),
and
hook
the
upper
part
of
the
indoor
unit
on
the
installation
plate
(1).
3)
Check
if
the
indoor
unit
is
hooked
securely
on
the
installation
plate
(1)
by
moving
the
unit
to
left
and
right.
4)
Thrust
the
lower
part
of
the
indoor
unit into
the
installation
plate
(1).
2-4-2.
DRAIN
PIPING
*
|f
the
extension
drain
hose
has
to
pass
through
a
room,
be
sure
to
wrap
it
with
com-
mercially
sold
insulation.
*
The
drain
hose
should
point
downward
for
easy
drain
flow.
(Fig.
1)
*
|f
the
drain
hose
provided
with
the
indoor
unit
is
too
short,
connect
it
with
drain
hose
(/)
that
should
be
provided
at
your
site.
(Fig.
2)
*
When
connecting
the
drain
hose
to
the
hard
vinyl
chloride
pipe,
be
sure
to
insert
it
securely
into
the
pipe.
(Fig.
3)
Liquid
pipe
Gas
pipe
Indoor/outdoor
unit
connecting
wire
(A)
Felt
tape
(7)
Piping
tape
(G)
Cut
off
in
case
of
left
piping.
“>
Drain
hose
Fig.
1
Fig.
2
Drain
hose
Drain
cap
Fig.
3
Fig.
4
SD
AY
er
Fig.
5
Cut
off
in
case
of
down-
ward
piping.
Cut
off
in
case
of
right
piping.
To
the
left
O
Drain
Drain
hose
ye
hose
279/16
in
«—
Hard
vinyl
chloride
pipe
Downward
=
(70
cm)
(30
mene
in.
slope
#
Soft
hose
I.D.
ormore
J
|}
19/32
in.
insert
I
Ht
15
securely
Z,
v1
po
(18
mm)
Different
-”
G
diameter
joint
UL
nnn
Fig.
1
Fig.
2
Fig.
3
|
Do
not
make
drain
piping
as
shown
below.
I
Atleast
.
:
1-31/32
in.
Tip
of
drain
hose
dipped
(50
mm)
Sy
water
gap
‘
oS
i
a
FOOTIE
Water
.
Water
,
leakage leakage
Waving
leakage
7;
Ditch
3.
OUTDOOR
UNIT
INSTALLATION
3-1.
CONNECTING
WIRES
FOR
OUTDOOR
UNIT
1)
Remove
the
service
panel.
2)
Remove
the
conduit
cover.
3)
then
secure
it
against
unit
with
screws.
4)
Loosen
terminal
screw,
and
connect
indoor/outdoor
unit
connecting
wire
(A)
from
the
indoor
1in.
unit
correctly
on
the
terminal
block.
Be
careful
not
to
make
mis-wiring.
Fix
the
wire
to
the
ter-
minal block
securely
so
that
no
part
of
its
core
is
appeared,
and
no
external
force
is
conveyed
to
the
connecting
section
of
the
terminal
block.
5)
Firmly
tighten
the
terminal
screws
to
prevent
them
from
loosening.
After
tightening,
pull
the
wires
lightly
to
confirm
that
they
do
not
move.
6)
Connect
power
supply
cord
(K).
7)
Connect
ground
wires
of
indoor/outdoor
unit
connecting
wire
(A)
and
power
supply
cord
(K)
to
the
TB
support.
8)
Install
the
conduit
cover.
9)
Install
the
service
panel
securely.
Fix
the
conduit
connector
to
conduit
plate
(A
models)/conduit
cover
(B
models)
with lock
nut
etka
ay
PA
T
19/32
in.
(15
mm)
(25
mm)
Power
supply
cord
(K)
et
et
eA
a
MUZ-A09/12/15/17NA
Lead
wire
Power
supply
cord
(K)
A
Lelleb
desta
scala
ee
eA
MUZ-A09/12/15/17NA
Grounding
terminal
Conduit
plate
Connector
*
Make
earth
wire
a
little
longer
than
others.
(More
than
1-12/32
in.
35
mm)
*
For
future
servicing,
give
extra
length
to
the
connecting
wires.
Terminal
block
_--
Indoor/outdeor
unit
connecting
wire
(A)
Power
supply
cord
(K)
Po
Conduit
cover
MU-A12WA
Lock
nut
—
get
rounding
terminal
Conduit
cover
*
Make
earth
wire
a
little
longer
than
others.
(More
than
1-12/32
in.
35
mm)
*
For
future
servicing,
give
extra
length
to
the
connecting
wires.
Terminal
block
—
Power
supply
cord
(K)
Indoor/outdoor
unit
connecting
wire
(A)
3-2.
FLARING
WORK
1)
Cut
the
copper
pipe
correctly
with
pipe
cutter.
(Fig.
1,
2)
2)
Completely
remove
all
burrs
from
the
cut
cross
section
of
pipe.
(Fig.
3)
*
Put
the
end
of
the
copper
pipe
to
downward
direction
as
you
remove
burrs
in
order
to
avoid
to
let
burrs
drop
in
the
piping.
3)
Remove
flare
nuts
attached
to
indoor
and
outdoor
units,
then
put
them
on
pipe
having
com-
pleted
burr
removal.
(Not
possible
to
put
them
on after
flaring
work.)
4)
Flaring
work
(Fig.
4,
5).
Firmly
hold
copper
pipe
in
the
dimension
shown
in
the
table.
Select
A
mm
from
the
table
according
to
the
tool
you
use.
5)
Check
*
Compare
the
flared
work
with
Fig.
6.
*
If
flare
is
noted
to
be
defective,
cut
off
the
flared
section
and
do
flaring
work
again.
Ainch
(mm)
Tightening
torque
Pipe
diameter
Nut
:
Pp
h
inch
Clutch Clutch
Wing
nut
ftelb
inch
(mm) (mm)
type
tool
type
tool
type
tool
Nem
(kgfecm)
forR410A
|
for
R22
for
R22
g
14
10
to
13
0.06 t
@
1/4
(6.35)
(17)
oes
13.7
to
17.7
(140
to
180)
0
3/8
(9.52)
|
38
0,04
to
ere
34,3
0.41.2
|
221030
(22)
|
pto002
|
0.06
6)
310%"-2
|
(360
to
420)
2
|
(t005)
|
(1.0
to
36
to
42
@
1/2
(12.7)
(26)
1.5)
oye
49.0
to
56.4
(500
to
575)
5/8
(2.0
to
54
to
58
@
5/8
(15.88)
(29)
2.5)
73.5
to
78.4 (750
to
800)
Good
No
good
90?
~——w—_—
(Ne
Copper
|
, 4
ty
€
5
:
pe
Tilted
Uneven
Burred
Fig.
4
Fig.
2
Burr
_
Copper
pipe
x
.-
Spare
reamer
3
»
“+
Pipe
cutter
»
4
Fig.
3
Fiaring
tool
“SG
Ee
He
\
“Ss
’
of
---
Copper
pipe
Clutch
type
=
Wing
nut
type
Fig.
4
Flare
nut
Fig.
5
Inside
is
shin-
Smooth
all
ing
without
any
around
scratches.
a >
Even
length
Le
all
around
j
Fig.
6
3-3.
PIPE
CONNECTION
*
Fasten
flare
nut
with
a
torque
wrench
as
specified
in
the
table.
«
When
fastened
too
tight,
flare
nut
may
brake
after
a
long
period
and
cause
refrigerant
leakage.
indoor
unit
connection
Connect
both
liquid
and
gas pipings
to
indoor
unit.
*
Apply
a
thin
coat
of
refrigeration
oil
(J)
on
the
seat
surface
of
pipe.
*
For
connection,
first
align
the
center,
then
tighten
the
first
3
to
4
turns
of
flare
nut.
*
Use
tightening
torque
table
below
as
a
guideline
for
indoor
unit
side
union
joint
section,
and
tighten
using
two
wrenches.
Excessive
tightening
damages
the
flare
section.
Outdoor
unit
connection
Connect
pipes
to
stop
valve
pipe
joint
of
the
outdoor
unit
in
the
same
manner
applied
for
indoor
unit.
*
For
tightening,
use
a
torque
wrench
or
spanner
and
use
the
same
tightening
torque
ap-
plied
for
indoor
unit.
3-4.
INSULATION
AND
TAPING
4)
Cover
piping
joints
with
pipe
cover.
2)
For
outdoor
unit
side,
surely
insulate
every
piping
including
valves.
3)
Using
piping
tape
(G),
apply
taping
starting
from
the
entry
of
outdoor
unit.
*
Stop
the
end
of
piping
tape
(G)
with
tape
(with
adhesive
agent
attached).
*
When
piping
have
to
be
arranged
through
above
ceiling,
closet
or
where
the
temper-
ature
and
humidity
are
high,
wind
additional
commercially
sold
insulation
to
prevent
condensation.
PURGING
PROCEDURES,
LEAK
TEST,
AND
TEST
RUN
4-1.
PURGING
PROCEDURES
AND
LEAK
TEST
1)
Remove
service
port
cap
of
stop
valve
on
the
side
of
the
outdoor
unit
gas
pipe.
(The
stop
valve
will
not
work
in
its
initial
state
fresh
out
of
the
factory,
totally
closed
with
cap
on.)
2)
Connect
gauge
manifold
valve
and
vacuum
pump
to
service
port
of
stop
valve
on
the
gas
pipe side
of
the
outdoor
unit.
(
~0.101
MPa
Compound
pressure
gauge
*4
to
5
tums
Stop
valve
cap
(-30
in.Hg
(for
R410A)
(Torque
19.6
to
[-760
mHg])
Pressure
gauge
*Close
“Open
1
ls
}
2
Hexagonal
wrench
29.4
Nem, 200
to
300
kgfrom)
SLOP
valve
for
LIQUID
#
(for
R410A)
Gauge
manifold
vaive
(for
R410A)
Handle
High
Charge
hose
(for
R410A)
Service
port
cap
(Torque
13.7
to
17.7
Nem,
140
to
180
kgfecm)
Adapter
for
pre-
Th
venting
the
back
flow
Vacuum
pump
(or
the
vacuum
pump
with
the
function
to
prevent
the
back
flow)
When
attaching
the
control
valve
to.
the
service
port.
valve
core
may
deform
or
loosen
if
excess
pressure
is
applied.
This
may
cause
gas
leak.
Precautions
when
using
the
control
valve
g
When
attaching
the
control
valve
to
the
service
port,
make
sure
that
the
valve
core
is
in
closed
position,
and
/
Service
port
Control
valve
=
then
tighten
part
A.
Do
not
tighten
Open
Charae
hose
part
A
or
turn
the
body
when
valve
ose
Body
g
core
is
in
open
position.
4-2.
TEST
RUN
1)
Insert
power
supply
plug
into
the
power
outlet
and/or
turn
on
the
breaker.
Check
that
all
LED
lamps
are
not
lit.
If
they
are
blinking,
check
that
the
horizontal
vane
is
installed
correctly.
Refer
to
operating
instructions
for
details.
2)
Press
the
E.O.
SW.
Test
run
will
be
performed
for
30
minutes.
If
the
left
side
lamp
of
the
operation
indicator
blinks
every
0.5
seconds,
inspect
the
indoor/outdoor
unit
connecting
wire
(A)
for
mis-wiring.
After
the
test run,
emergency
COOL
mode
(75°F
[24°C]
COOL)
will
start.
3)
To
stop
operation,
press
the
E.O.
SW
several
times
until
all
LED
lamps
turn
off.
Refer
to
operating
instructions
for
details.
Emergency
operation
switch
(E.0.
SW)
Checking
the
remote
(infrared)
signal
reception
Press
the
ON/OFF
button
on
the
remote
controller
and
check
that
an
electronic
sound
is
heard
from
the
indoor
unit.
Press
the
ON/OFF
button
again
to
turn
the
air
conditioner
off.
*
Once
the
compressor
stops,
the
restart
preventive
device
operates
so
the
compressor
will
not
operate
for
3
minutes
to
protect
the
air
conditioner.
4-3.
AUTO
RESTART
FUNCTION
This
product
is
equipped
with
an
auto
restart
function.
When
the
power
supply
is
stopped
during
operation,
such
as
during
blackouts,
the
function
automatically
starts
operation
in
the
previous
setting
once
the
power
supply
is
resumed.
(Refer
to
the
operating
instructions
for
details.)
Caution:
*
After
test
run
or
remote
signal
reception
check,
tum
off
the
unit
with
the
E.O.
SW
or
the
remote
controller
before
turing
off
the
power
supply.
Not
doing
so
will
cause
the
unit
to
start
operation
automatically
when
power
supply
is
resumed.
To
the
user
*
After
installing
the
unit,
make
sure
to
explain
the
user
about
auto
restart
function.
*
f
auto
restart
function
is
unnecessary,
it
can
be
deactivated.
Consult
the
service
rep-
resentative
to
deactivate
the
function.
Refer
to
the
service
manual
for
details.
3)
Run
the
vacuum
pump.
(Vacuumize
for
more
than
15
minutes.)
4)
Check
the
vacuum
with
gauge
manifold
valve,
then
close
gauge
manifold
valve,
and
stop
the
vacuum
pump.
5)
Leave
as
it
is
for
one
or
two
minutes.
Make
sure
pointer
gauge
manifold
valve
remains
in
the
same
position.
Confirm
that
pressure
gauge
shows
~0.101
Mpa
[Gauge]
(~30
in.Hg
[-760
mmbg}).
6)
Remove
gauge
manifold
valve
quickly
from
service
port
of
stop
valve.
7)
After
refrigerant
pipes
are
connected
and
evacuated,
fully
open
all
stop
valves
on
both
sides
of
gas
pipe
and
liquid
pipe.
Operating
without
fully
opening
lowers
the
perform-
ance
and
this
causes
trouble.
8)
Refer
to
1-3.,
and
charge
the
prescribed
amount
of
refrigerant
if
needed.
Be
sure
to
charge
slowly
with
liquid
refrigerant.
Otherwise,
composition
of
the
refrigerant
in
the
system
may
be
changed
and
affect
performance
of
the
air
conditioner.
9)
Tighten
cap
of
service
port
to
obtain
the
initial
status.
10)
Leak
test
4-4,
EXPLANATION
TO
THE
USER
*
Using
the
OPERATING
INSTRUCTIONS,
explain
to
the
user
how
to
use
the
air
condi-
tioner
(how
to
use
the
remote
controller,
how
to
remove
the
air
filters,
how
to
remove
or
put
the
remote
controller
in
the
remote
controller
holder,
how
to
clean,
precautions
for
operation,
etc.)
*
Recommend
the
user
to
read
the
OPERATING
INSTRUCTIONS
carefully.
5.
RELOCATION
AND
MAINTENANCE
5-1.
REMOVING
AND
INSTALLING
THE
PANEL
ASSEMBLY
Removal
procedure
|
4)
Remove
the
2
screws
which
fix
the
panel
assembly.
2)
Remove
the
panel
assembly.
Be
sure
to
remove
its
bottom
end
first.
installation
procedure
1)
Install
the
panel
assembly
following
the
removal
procedure
in
reverse.
X \ \
2)
Be
sure
to
press
the
positions
as
indicated
by
the
arrows
in
order
to
attach
the
assembly
completely
to
the
unit.
5-2.
REMOVING
THE
INDOOR
UNIT
Remove
the
bottom
of
the
indoor
unit
from
the
installation
plate.
When
releasing
the
corner
part,
release
both
left
and
right
bottom
corner
part
of
indoor
unit
and
pull
it
downward
and
forward
as
shown
in
the
figure
on
the
right.
if
the
above
method
cannot
be
used
Remove
the
front
panel.
Then,
insert
hexagonal
wrenches
into
the
square
holes
on
the
left
and
right
sides
of
the
unit
and
push
them
up
as
shown
in
the
following
figure.
The bottom
of
the
indoor
unit
lowers
and
releases
the
hooks.
ZA
Lower
Square
hole
5-3.
PUMPING
DOWN
When
relocating
or
disposing
of
the
air
conditioner,
pump
down
the
system
following
the
procedure
below
so
that
no
refrigerant
is
released
into
the
atmosphere.
1)
Connect
the
gauge
manifold
valve
to
the
service
port
of
the
stop
valve
on
the
gas
pipe
side
of
the
outdoor
unit.
2)
Fully
close
the
stop
valve
on
the
liquid
pipe side
of
the
outdoor
unit.
3)
Close
the
stop
valve
on
the
gas
pipe
side
of
the
outdoor
unit
almost
completely
so
that
it
can
be
easily
closed
fully
when
the
pressure
gauge
shows
0
MPa
[Gauge]
(0
Ibf/in?
[0
kgficm’)).
4)
Start the
emergency
COOL
operation.
To
start
the
emergency
operation
in
COOL
mode,
disconnect
the
power
supply
plug
and/or
turn
off
the
breaker.
After
15
seconds,
connect
the
power
supply
plug
and/or
turn
on
the
breaker,
and
then
press
the
E.O.
SW
once.
(The
emergency
COOL
operation
can
be
performed
continuously
for
up
to
30
minutes.)
5)
Fully
close
the
stop
valve
on
the
gas
pipe side
of
the
outdoor
unit
when
the
pressure
gauge
shows
0.05
to
0
MPa
[Gauge]
(approx.
7.25
to
0
Ibffin?
[0.5
to
0
kgf/cm’).
6)
Stop
the
emergency
COOL
operation.
Press
the
E.O.
SW
twice
to
stop
the
operation.
aa
MITSUBISHI
ELECTRIC
CORPORATION
HEAD
OFFICE:
TOKYO
BLDG.,
2-7-3,
MARUNOUCHI,
CHIYODA-KU,
TOKYO
100-8310,
JAPAN
