Mitsubishi Electric Mr. SLIM PUZ-A NHA3 Series User manual

F
O
R IN
S
TALLER
A
ir-
Co
n
d
i
t
i
o
n
e
r
s
P
UZ-A·NHA3, PUZ-A·NHA3-BS
P
UZ-A·NHA4
,
PUZ-A·NHA4-B
S
P
UZ-A·NHA5, PUZ-A·NHA5-BS
P
UY-A·NHA3
,
PUY-A·NHA3-B
S
P
UY-A·NHA4, PUY-A·NHA4-BS
P
UY-A·NHA5
,
PUY-A·NHA5-B
S
INSTALLATION MANUAL
For safe and correct use, read this manual and the indoor unit installation manual thorou
g
hl
y
before installin
g
t
h
e
a
ir-
co
n
d
iti
o
n
e
r
u
nit
.
Français
Español
English

2
Co
n
te
n
ts
1
.
S
a
f
et
y
precautions ..............................................
2
2
.
I
nstallation location .............................................
3
3.
I
nstallin
g
the outdoor unit ........................................
.
4
4
.
I
nstallin
g
the re
f
ri
g
erant pipin
g
....................................
.
5
5.
Draina
g
e pipin
g
work ...........................................
.
7
6.
Elec
tr
ical
w
o
r
k
................................................
.
7
7.
Test run .....................................................
.
9
8.
S
pecial Functions ..............................................
10
9.
Sy
stem control
(
Fi
g
. 9-1
)
........................................
11
1. Safety precautions
►
B
efore installing the unit, make sure you read all the “Safety preca
u
-
t
i
o
n
s
”.
►
P
lease report to or take consent by the supply authority before conne
c
-
t
ion to the system
.
A
fter installation work has been completed, explain the “Safety Precautions,”
u
se,and maintenance of the unit to the customer according to the information in the
O
p
eration Manual and
p
erform the test run to ensure normal o
p
eration. Both the
Installation Manual and Operation Manual must be given to the user for keeping.
Th
ese manua
l
s must
b
e
p
asse
d
on to su
b
se
q
uent users
.
:
I
n
di
cates a part w
hi
c
h
must
b
e
g
roun
d
e
d.
Warnin
g:
C
are
f
ull
y
read the labels a
ffi
xed to the main unit.
Warnin
g:
•
T
he unit must not be installed by the user. Ask a dealer or an authorized
technician to install the unit. If the unit is installed incorrectl
y
, wate
r
l
eaka
g
e,electric shock, or fire ma
y
result
.
•
F
or installation work, follow the instructions in the Installation Manual and
use tools and pipe components speci
fi
call
y
made
f
or use with R410A re
-
fri
g
erant. The R410A refri
g
erant in the HFC s
y
stem is pressurized 1.6 times
the pressure o
f
usual re
f
ri
g
erants. I
f
pipe components not desi
g
ned
f
or
R
410A refri
g
erant are used and the unit is not installed correctl
y
, the pipes
m
a
y
burst and cause dama
g
e or in
j
uries. In addition, water leaka
g
e, electric
s
hock, or
fi
re ma
y
result.
•
T
he unit must be installed according to the instructions in order to min
i
-
m
ize the risk o
f
dama
g
e
f
rom earthquakes, t
y
phoons, or stron
g
winds. An
i
ncorrectl
y
installed unit ma
y
fall down and cause dama
g
e or in
j
uries.
•
T
he unit must be securely installed on a structure that can sustain its
w
ei
g
ht. I
f
the unit is mounted on an unstable structure, it ma
y
f
all down and
cause dama
g
e or in
j
uries.
•
I
f the air conditioner is installed in a small room, measures must be taken
to prevent the refri
g
erant concentration in the room from exceedin
g
the
s
a
f
et
y
limit in the event o
f
re
f
ri
g
erant leaka
g
e.
C
onsult a dealer re
g
ardin
g
the a
pp
ro
p
riate measures to
p
revent the allowable concentration from be
-
i
n
g
exceeded. Should the refri
g
erant leak and cause the concentration limit
to be exceeded, hazards due to lack o
f
ox
yg
en in the room ma
y
result
.
•
V
entilate the room if refrigerant leaks during operation. If refrigerant comes
i
nto contact with a
fl
ame, poisonous
g
ases will be released.
•
A
ll electric work must be performed by a qualified technician according to
l
ocal re
g
ulations and the instructions
g
iven in this manual. The units must
be powered b
y
dedicated power lines and the correct volta
g
e and circuit
breakers must be used. Power lines with insu
ffi
cient capacit
y
or incorrect
e
lectrical work ma
y
result in electric shock or fire
.
•
U
se C1220 copper phosphorus, for copper and copper alloy seamless
p
ipes, to connect the refri
g
erant pipes. If the pipes are not connected co
r
-
rectl
y
, the unit will not be properl
y
g
rounded and electric shock ma
y
result.
•
Use only speci
fi
ed cables
f
or wiring. The wiring connections must be made
s
ecure
l
y w
i
t
h
no tens
i
on app
li
e
d
on t
h
e term
i
na
l
connect
i
ons.
Al
so, neve
r
s
plice the cables
f
or wiring (unless otherwise indicated in this document)
.
F
ailure to observe these instructions may result in overheating or a
fi
re.
•
The terminal block cover panel o
f
the outdoor unit must be
fi
rml
y
attached.
If
the cover panel is mounted incorrectly and dust and moisture enter the
unit, electric shock or
fi
re may result.
•
W
hen installin
g
or relocatin
g
, or servicin
g
the air conditioner, use onl
y
the
s
peci
f
ied re
f
rigerant (R410A) to charge the re
f
rigerant lines. Do not mix it
w
ith any other re
f
rigerant and do not allow air to remain in the lines
.
If
air is mixed with the re
f
rigerant, then it can be the cause o
f
abnormal high
p
ressure in the re
f
rigerant line, and may result in an explosion and othe
r
h
azar
d
s.
T
he use o
f
any re
f
rigerant other than that speci
f
ied
f
or the system will
cause mechanical
f
ailure or s
y
stem mal
f
unction or unit breakdown. In the
w
orst case, t
hi
s cou
ld
l
ea
d
to a ser
i
ous
i
mpe
di
ment to secur
i
n
g
pro
d
uct
s
a
f
et
y
.
•
U
se onl
y
accessories authorized b
y
Mitsubishi Electric and ask a dealer o
r
a
n authorized technician to install them. I
f
accessories are incorrectl
y
i
n
-
s
talled, water leaka
g
e, electric shock, or
fi
re ma
y
result
.
•
D
o not alter the unit.
C
onsult a dealer
f
or re
p
airs. I
f
alterations or re
p
airs are
not per
f
ormed correctl
y
, water leaka
g
e, electric shock, or
fi
re ma
y
result
.
•
The user should never attem
p
t to re
p
air the unit or trans
f
er it to anothe
r
l
ocation. I
f
the unit is installed incorrectly, water leakage, electric shock,
or
fi
re ma
y
result. I
f
the air conditioner must be repaired or moved, ask a
d
ea
l
er or an aut
h
or
i
ze
d
tec
h
n
i
c
i
an.
•
Af
ter installation has been completed, check
f
or re
f
ri
g
erant leaks. I
f
re
f
ri
g
-
e
rant leaks into the room and comes into contact with the
fl
ame o
f
a heater
or porta
bl
e coo
ki
ng range, po
i
sonous gases w
ill
b
e re
l
ease
d
.
1
.1. Before installation
Caution:
•
Do not use the unit in an unusual environment. I
f
the air conditioner is
i
nstalled in areas exposed to steam, volatile oil (including machine oil), o
r
s
ulfuric gas, areas exposed to high salt content such as the seaside, or
a
reas where the unit will be covered by snow, the performance can be sig
-
nificantly reduced and the internal parts can be damaged.
•
D
o not
i
nsta
ll
t
h
e un
i
t w
h
ere com
b
ust
ibl
e gases may
l
ea
k
,
b
e pro
d
uce
d
,
flow, or accumulate. If combustible gas accumulates around the unit, fire or
e
xp
l
os
i
on may resu
l
t.
•
Th
e out
d
oor un
i
t pro
d
uces con
d
ensat
i
on
d
ur
i
ng t
h
e
h
eat
i
ng operat
i
on.
M
ake sure to provide drainage around the outdoor unit if such condens
a
-
t
i
on
i
s
lik
e
l
y to cause
d
amage
.
Warning
:
D
escribes precautions that must be observed to prevent danger of injury o
r
deat
h
to
t
h
e
use
r
.
C
aut
i
o
n:
D
escribes precautions that must be observed to prevent dama
g
e to the unit.
•
When installin
g
the unit in a hospital or communications office, be prepared
for noise and electronic interference. Inverters, home appliances, hi
g
h
-
frequenc
y
medical equipment, and radio communications equipment can
cause
t
h
e
a
ir
co
n
d
i
t
i
o
n
e
r
to
m
a
lf
u
n
ct
i
o
n
o
r
b
r
ea
k
do
wn. Th
e
a
ir
co
n
d
i
t
i
o
n
e
r
ma
y
also affect medical equipment, disturbin
g
medical care, and commun
i
-
c
ations equipment, harmin
g
the screen displa
y
qualit
y.
1.2. Before installation (relocation)
Caut
i
o
n:
•
Be extremely careful when transporting the units. 2 or more persons are
needed to handle the unit, as it wei
g
hs
20
k
g
, 44 Ibs or more. Do not
g
rasp
the packa
g
in
g
bands. Wear protective
g
loves to remove the unit
f
rom the
p
acka
g
in
g
and to move it, as
y
ou can in
j
ure
y
our hands on the
fi
ns or the
e
d
g
e o
f
other parts.
•
Be sure to sa
f
el
y
dispose o
f
the packa
g
in
g
materials. Packa
g
in
g
materials,
s
uch as nails and other metal or wooden parts ma
y
cause stabs or othe
r
i
n
j
uries
.
•
The base and attachments of the outdoor unit must be periodically
c
hecked for looseness, cracks or other damage. If such defects are left
uncorrected,the unit may fall down and cause damage or injuries
.
•
D
o not c
l
ean t
h
e a
i
r con
di
t
i
oner un
i
t w
i
t
h
water.
El
ectr
i
c s
h
oc
k
may resu
l
t
.
•
Tighten all
fl
are nuts to speci
fi
cation using a torque wrench. I
f
tightened too
much, the flare nut can break after an extended period and refrigerant can
lea
k
out
.

31-1/2
11-13/16+29/32
23-5/8
5-29/32 2-23/32
19-11/16
13
37-13/32
13+1-3/16
37-1/8(53-5/32)
6-7/8
23-5/8
14-9/16
1.
S
a
f
ety precautions
1
.
3
. B
efo
r
e
e
l
ect
ri
c
w
o
rk
C
aution:
•
Be sure to install circuit breakers. I
f
not installed, electric shock ma
y
result
.
•
For the power lines, use standard cables of sufficient capacity. Otherwise, a
s
hort circuit, overheatin
g
, or
fi
re ma
y
result
.
•
When installin
g
the power lines, do not appl
y
tension to the cables. I
f
the
connect
i
ons are
l
oosene
d
, t
h
e ca
bl
es can snap or
b
rea
k
an
d
over
h
eat
i
n
g
or
fi
re ma
y
result
.
•
B
e sure to ground the unit. Do not connect the ground wire to gas or water
p
ipes, lighting rods, or telephone grounding lines. If the unit is not properly
g
rounded, electric shock may result.
•
U
se circuit breakers (ground fault interrupter, isolating switch (+B fuse),
a
nd molded case circuit breaker) with the specified capacity. If the circuit
breaker capacity is larger than the specified capacity, breakdown or fire
may result
.
1
.4. Be
f
ore starting the test run
C
aution:
•
Turn on the main power switch more than 12 hours be
f
ore startin
g
opera
-
tion.
S
tarting operation just a
f
ter turning on the power switch can severely
d
amage t
h
e
i
nterna
l
parts.
K
eep t
h
e ma
i
n power sw
i
tc
h
turne
d
on
d
ur
i
ng
t
h
e operat
i
on season
.
•
Be
f
ore startin
g
operation, check that all panels,
g
uards and other protective
p
arts are correct
l
y
i
nsta
ll
e
d
.
R
otat
i
ng,
h
ot, or
hi
g
h
vo
l
tage parts can cause
i
n
j
ur
i
es.
•
D
o not touc
h
an
y
sw
i
tc
h
w
i
t
h
wet
h
an
d
s.
El
ectr
i
c s
h
oc
k
ma
y
resu
l
t.
•
D
o not touch the refrigerant pipes with bare hands during operation. The
refrigerant pipes are hot or cold depending on the condition of the flowing
refrigerant. If you touch the pipes, burns or frostbite may result
.
•
Af
ter stopping operation, be sure to wait at least
fi
ve minutes be
f
ore tur
n
-
i
ng off the main power switch. Otherwise, water leakage or breakdown may
resu
l
t
.
1
.5. Usin
g
R410A refri
g
erant air conditioners
C
aut
i
o
n:
•
Use C1220 copper phosphorus, for copper and copper alloy seamless
p
ipes, to connect the refri
g
erant pipes. Make sure the insides of the pipes
a
re clean and do not contain an
y
harmful contaminants such as sulfuric
com
p
ounds, oxidants, debris, or dust. Use
p
i
p
es with the s
p
ecified thic
k
-
ness.
(
Refer to pa
g
e 5
)
Note the followin
g
if reusin
g
existin
g
pipes that ca
r
-
ried R22 refri
g
erant
.
-
Replace the existin
g
fl
are nuts and
fl
are the
fl
ared sections a
g
ain.
-
Do not use thin pipes.
(
Re
f
er to pa
g
e 5
)
•
S
tore the pipes to be used during installation indoors and keep both ends
o
f the pipes sealed until
j
ust before brazin
g
.
(
Leave elbow
j
oints, etc. in
their packa
g
in
g
.
)
If dust, debris, or moisture enters the refri
g
erant lines, oil
d
eterioration or compressor breakdown ma
y
result
.
•
Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration
o
il applied to the flared sections. If mineral oil is mixed in the refri
g
eration
o
il, oil deterioration ma
y
result.
•
D
o not use re
f
ri
g
erant other than R410A re
f
ri
g
erant. I
f
another re
f
ri
g
erant is
use
d,
t
h
e c
hl
or
i
ne w
ill
cause t
h
e o
il
to
d
eter
i
orate
.
•
U
se the
f
ollowin
g
tools speci
fi
call
y
desi
g
ned
f
or use with R410A re
f
ri
g
erant.
The
f
ollowing tools are necessary to use R410A re
f
rigerant.
C
ontact your
nearest dealer
f
or any questions.
Tools (for R410A)
Gauge manifold Flare tool
C
har
g
e hos
e
S
ize ad
j
ustment
g
au
ge
G
as leak detecto
r
V
acuum pump a
d
apter
T
or
q
ue wrenc
h
Electronic refrigerant charging scale
•
B
e sure to use the correct tools. If dust
,
debris
,
or moisture enters the r
e
-
frigerant lines, refrigeration oil deterioration may result
.
•
Do not use a charging cylinder. If a charging cylinder is used, the composi
-
t
ion of the refrigerant will change and the efficiency will be lowered
.
2
. In
sta
ll
at
i
o
n l
ocat
i
on
Fig. 2-
2
A
12
,
A18
F
ig. 2-
1
2
.1. Re
f
ri
g
erant pipe
(
Fi
g
. 2-1
)
C
heck that the di
ff
erence between the hei
g
hts o
f
the indoor and outdoor
units, the len
g
th o
f
re
f
ri
g
erant pipe, and the number o
f
bends in the pipe
a
r
e
wi
t
hin
t
h
e
limi
ts
s
h
o
wn
be
l
o
w.
Models

Pi
pe
l
en
g
t
h
(
one wa
y)

H
e
ight
d
i
ffe
r
e
n
ce

N
u
m
be
r
of
bends
(
one wa
y)
A1
2
, A18 Max. 30 m, 100 f
t
M
ax. 30 m,100 f
t
Max. 1
5
A
2
4,A30,A36,A
4
2
Max. 50 m, 165 f
t
M
ax. 30 m,100 f
t
Max. 1
5
•
Hei
g
ht di
ff
erence limitations are bindin
g
re
g
ardless o
f
which unit, indoor or out
-
d
oor,
i
s pos
i
t
i
one
d
hi
g
h
er.

Indoor unit

O
utdoor unit
2
.2.
C
hoosing the outdoor unit installation location
•
A
void locations exposed to direct sunli
g
ht or other sources of heat.
•
S
elect a location
f
rom which noise emitted b
y
the unit will not inconvenience
ne
i
g
hb
ors.
•
S
elect a location permittin
g
eas
y
wirin
g
and pipe access to the power source and
i
n
doo
r
u
n
i
t.
•
A
void locations where combustible
g
ases ma
y
leak, be produced,
fl
ow, or accu
-
m
ula
t
e
.
•
Note that water ma
y
drain
f
rom the unit durin
g
operation.
•
S
elect a level location that can bear the wei
g
ht and vibration o
f
the unit.
•
A
void locations where the unit can be covered by snow. In areas where heavy
s
now fall is anticipated, special precautions such as raisin
g
the installation loc
a
-
tion or installing a hood on the air intake must be taken to prevent the snow from
blocking the air intake or blowing directly against it. This can reduce the airflow
a
nd a malfunction ma
y
result.
•
A
void locations exposed to oil, steam, or sul
f
uric
g
as.
•
Use the transportation handles o
f
the outdoor unit to transport the unit. I
f
the unit
is carried from the bottom, hands or fingers may be pinched.
2
.3. Outline dimensions (Outdoor unit) (Fig. 2-2)
T
he figure in parenthesis is for A42 model.





(inch
)
(inch
)
A24
,
A30
,
A36
,
A4
2

Fi
g
.
3
-1
Max. 23/32 for A12, A18
Max. 1-3/16 for A24-A42
A24
-
A42
A
12
,
A18
A24
-
A42
A
12
,
A18
19-11/16 19-11/16
Min. 25-19/32
5-29/32 5-29/32
Min. 13-25/32
31-1/2
1-9/32
11-13/16
13
23-5/8 23-5/8
Min. 14-3/16
6-7/8 6-7/8
Min. 13/32
37-13/32
1-3/32 13
14-9/16
(inch
)
(inch
)




M10(3/8”)bolt
Base
As long as possible.
Vent
Set deep in the ground.


4
2
. In
sta
ll
at
i
o
n l
ocat
i
o
n
2
.4. Ventilation and service s
p
ace
2
.4.
1
. Wind
y
location installation
W
hen installing the outdoor unit on a rooftop or other location unprotected from the
wind, situate the air outlet of the unit so that it is not directly exposed to strong winds
.
S
trong wind entering the air outlet may impede the normal airflow and a malfunction
may resu
l
t.
T
he following shows three examples of precautions against strong winds.

Face the air outlet towards the nearest available wall about 50 cm
,
19-11/16 inch
a
way from the wall. (Fig.
2
-3)

I
nstall an optional air outlet
g
uide and air
g
uide if the unit is installed in a location
w
here strong winds from a typhoon, etc. may directly enter the air outlet. (Fig.
2
-4)

Ai
r out
l
et
g
u
ide

P
os
i
t
i
on t
h
e un
i
t so t
h
at t
h
e a
i
r out
l
et
bl
ows perpen
di
cu
l
ar
ly
to t
h
e seasona
l
w
i
n
d
direction, if possible. (Fig.
2
-5
)

Wi
n
d
di
r
ec
t
ion
4
F
ig. 2-
4
Fig.
2
-
3


Fi
g
.
2
-5
2.4.2. When installing a single outdoor unit (Refer to the last page
)
Minimum dimensions are as
f
ollows, except
f
or Max., meanin
g
Maximum dime
n
-
sions, indicated
.
T
he
fig
ures in parentheses are
f
or A42 models.
Re
f
er to the
fig
ures
f
or each case.

O
bstacles at rear onl
y
(
Fi
g
.
2
-6
)

O
bstacles at rear and above onl
y
(
Fi
g
.
2
-7
)

O
bstacles at rear and sides onl
y
(
Fi
g
.
2
-8
)
*
3
5
0
mm,
13-
2
5/3
2
in
c
h
fo
r A1
2
, A
18

O
bstacles at
f
ront onl
y
(
Fi
g
.
2
-9
)
*
W
hen using an optional air outlet guide, the clearance
f
or A4
2
models is 5
00
mm,
1
9-11/16 inch or more
.

O
bstacles at
f
ront and rear onl
y
(
Fi
g
.
2
-10
)
*
W
hen using an optional air outlet guide, the clearance for A4
2
models is 500 mm
,
1
9-11/16 inch or more
.

Obstacles at rear, sides, and above only (Fig.
2
-11
)
*
3
50mm
,
13
-
2
5/3
2
inch for A1
2
,
A1
8
• Do not install the optional air outlet
g
uides for upward airflow.
2.4.3. When installin
g
multiple outdoor units
(
Refer to the last pa
g
e
)
L
eave 350 mm, 13-
2
5
/
3
2
inch for A18 and 10 mm, 13/3
2
in
c
h f
o
r A
2
4
-
A4
2
s
p
ace
o
r m
o
r
e
be
tw
ee
n t
he
u
n
i
t
s.
Obstacles at rear only (Fig.
2
-
1
2
)
Obstacles at rear and above only (Fig.
2
-13
)
• No more than three units must be installed side b
y
side. In addition, leave space as shown
.
• Do not install the optional air outlet
g
uides
f
or upward air
fl
ow.

Obstacles at front only (Fig.
2
-14
)
*
W
hen usin
g
an optional air outlet
g
uide, the clearance
f
or A4
2
models is
1000
mm
,
39
-
3/8
inch or more
.

O
bstacles at
f
ront and rear onl
y
(
Fi
g
.
2
-15
)
*
W
hen using an optional air outlet guide, the clearance
f
or A4
2
models is
1000
mm
,
3
9-3/8 inch or more
.

S
in
g
le parallel unit arran
g
ement
(
Fi
g
.
2
-16
)
*
W
hen using an optional air outlet guide installed for upward airflow, the clearance is 500
(
1000) mm, 19-11/16 (39-3/8) inch or more.

Multiple parallel unit arran
g
ement
(
Fi
g
. 2-17
)
*
When usin
g
an optional air outlet
g
uide installed for upward airflow, the clearance is 1000
(
1500
)
mm, 39-3/8
(
59-1/16
)
inch or more.
Stacked unit arrangement (Fig.
2
-
18)
•
Th
e un
i
ts can
b
e stac
k
e
d
up to
2
un
i
ts
high
.
•
N
o more t
h
an two stac
k
e
d
un
i
ts must
b
e
i
nsta
ll
e
d
s
id
e
by
s
id
e.
I
n a
ddi
t
i
on,
l
eave space as
sho
wn
.
3. Installin
g
the outdoor uni
t
•
B
e sure to install the unit in a sturdy, level surface to prevent rattling noises du
r
-
ing peration. (Fig. 3-1)
<
Foundation specifications>
Fou
n
da
ti
o
n
bo
l
t
M10
(
3
/
8"
)
T
hi
c
kn
ess
o
f
co
n
c
r
e
t
e
12
0
mm
,
4
-
2
3
/3
2
i
n
ch
L
ength of bol
t
70 mm,
2
-
3/4 inch
Wei
g
ht-bearin
g
capacit
y
3
2
0
k
g
,
2
6
4 lbs
•
Make sure that the length of the foundation bolt is within 30 mm, 1-3/16 inch of
th
e
bo
tt
o
m
su
rf
ace
o
f th
e
base
.
•
S
ecure the base of the unit firmly with four-M10 foundation bolts in sturdy locations.
I
nsta
lli
ng t
h
e out
d
oor un
i
t
•
D
o not block the vent. I
f
the vent is blocked, operation will be hindered and break
-
d
own may resu
l
t.
•
In addition to the unit base
,
use the installation holes on the back o
f
the unit to a
t
-
tach wires, etc., if necessary to install the unit. Use self-tapping screws (ø5 × 15
mm
,
ø13
/
16 × 19
/
3
2
inch or less
)
and install on site
.
W
arn
i
ng
:
•
Th
e un
i
t must
b
e secure
ly
i
nsta
ll
e
d
on a structure t
h
at can susta
i
n
i
ts
weight. I
f
the unit is mounted on an unstable structure, it may
f
all down and
c
ause
d
amage or
i
n
j
ur
i
es.
•
Th
e un
i
t must
b
e
i
nsta
ll
e
d
accor
di
n
g
to t
h
e
i
nstruct
i
ons
i
n or
d
er to m
i
n
i
-
mize the risk o
f
damage
f
rom earthquakes, typhoons, or strong winds. An
i
ncorrectly installed unit may
f
all down and cause damage or injuries
.

F
lare cuttin
g
dimension
s
45˚± 2
˚
90˚
±
0
.
5˚






Fla
r
e
n
ut t
igh
ten
i
n
g
torqu
e
øA
R1/64 to R1/32
F
i
g.
4
-
2
(inch
)
F
ig
.
4-
3

















F
r
ont p
i
p
i
ng c
o
v
er
Pi
p
i
ng
c
o
v
er
S
to
p
v
al
v
e
Se
r
vice
p
ane
l
Be
n
d
r
adius
:
100 mm, 3-15
/
16 inch-150 mm, 5-27
/
32 inc
h
A24
-
A42
A
12,
A
1
8

Li
q
uid
p
i
pe

Gas
p
i
p
e

Inslatio
n

Tapin
g
5
4. Installing the re
f
rigerant pipin
g
4
.
1
. Precautions
f
or devices that use R410A re
f
ri
g
erant
•
R
efer to page 3 for precautions not included below on using air conditioners
w
ith R410A re
f
rigerant.
•
U
se ester oil, ether oil, alk
y
lbenzene oil
(
small amount
)
as the re
f
ri
g
eration
oil applied to the
fl
ared sections.
•
U
se
C
1220 copper phosphorus,
f
or copper and copper allo
y
seamless pipes,
t
o connect the refrigerant pipes. Use refrigerant pipes with the thicknesses
sp
eci
fi
ed in the table to the below. Make sure the insides o
f
the
p
i
p
es are
c
lean and do not contain any harmful contaminants such as sulfuric co
m
-
p
oun
d
s, ox
id
ants,
d
e
b
r
i
s, or
d
ust.
Warning
:
Wh
en
i
nsta
lli
n
g
or re
l
ocat
i
n
g
, or serv
i
c
i
n
g
t
h
e a
i
r con
di
t
i
oner, use on
ly
t
h
e
s
pecified refrigerant (R410A) to charge the refrigerant lines. Do not mix it with
a
ny other re
f
rigerant and do not allow air to remain in the lines.
I
f air is mixed with the refri
g
erant, then it can be the cause of abnormal hi
g
h
p
ressure in the re
f
rigerant line, and may result in an explosion and other haz
-
a
r
ds.
The use of any refrigerant other than that specified for the system will cause
mechanical
f
ailure or s
y
stem mal
f
unction or unit breakdown. In the worst
c
ase, this could lead to a serious impediment to securing product safety
.
A
1
2
,
A
18
A
2
4
-A4
2
Liq
u
id
pipe
ø6.35 mm
,
1/4inc
h
t
hickness 0.8 mm
,
1
/
3
2
i
n
ch
ø
9.5
2
mm
,
3/8 inch
thickness 0.8 mm
,
1
/3
2
i
n
ch
G
as
p
i
pe
ø1
2
.7 mm, 1
/
2
inch
thickness 0.8 mm, 1/
3
2
i
n
ch
ø
15.88 mm, 5/8 inch
thickness 1.0 mm, 3/64 inch
•
Do not use
p
i
p
es thinner than those s
p
eci
fi
ed above
.
4
.2. Connecting pipes (Fig. 4-1) (Fig. 4-2
)
When commerciall
y
available copper pipes are used, inslate both the liquid and
g
as pipes separately with commercially available insulation materials (heat-resi
s
-
tant to 100 °C
,
2
1
2
°F or more
,
thickness of
1
2
mm
,
1
/
2 inch or more). (Fig. 4-1)
•
T
he indoor parts of the drain pipe should be wrapped with polyethylene foam insu
-
lation materials
(
speci
fi
c
g
ravit
y
o
f
0.03, thickness o
f
9 mm, 23
/
64 inch or more
)
.
[Fi
g
. 4
-
2
]
• Appl
y
thin la
y
er of refri
g
erant oil to pipe and
j
oint seatin
g
surface before ti
g
htenin
g
fl
are nut.

•
Use
2
wrenches to tighten piping connections.

•
Use leak detector or soap
y
water to check
f
or
g
as leaks a
f
ter connections are
com
pl
ete
d
.
•
A
pply refrigerating machine oil over the entire flare seat surface.

•
U
se the flare nuts for the following pipe size.

*
1: The
fl
are nut is attached to its pipe.
*2: The flare nut is in the outdoor unit accessory
.
Do not use the flare nut attached. If it is used, a
g
as leaka
g
e or even a pipe e
x
-
traction may occur.
• When bending the pipes, be careful not to break them. Bend radii of 100 mm, 3
-
1
5/16 inch to 150 mm, 5-27/32 inch are sufficient
.
•
M
a
k
e sure t
h
e
pip
es
d
o not contact t
h
e com
p
ressor.
Ab
norma
l
no
i
se or v
ib
rat
i
on
ma
y
result
.

Pipes must be connected starting from the indoor unit
.
F
lare nuts must be ti
g
htened with a torque wrench
.

Flare the liquid pipes and gas pipes and apply a thin layer of refrigeration oi
l
(
Applied on site
)
.
Warning
:
When installing the unit, securely connect the refrigerant pipes before star
t
-
i
n
g
the compressor
.
4
.3. Refri
g
erant pipin
g
(
Fi
g
. 4-3
)
■
For A
12,
A
18
Remove the service panel

(
1 screw
).
■
F
o
r A24-A42
R
emove t
h
e serv
i
ce pane
l

(
3 screws
)
and the
f
ront pipin
g
cover

(
2
screws
)
and
rear piping cover (
2
screws).

P
er
f
orm re
f
ri
g
erant pipin
g
connections
f
or the indoor
/
outdoor unit when the ou
t
-
door unit
’
s stop valve is completel
y
closed.

V
acuum-purge air from the indoor unit and the connection piping.

Af
ter connectin
g
the re
f
ri
g
erant pipes, check the connected pipes and the indoor
u
nit for gas leaks. (Refer to 4.4 Refrigerant pipe airtight testing method)

V
acuumize the re
f
ri
g
erant lines throu
g
h the service port o
f
the liquid stop valve
a
nd then open the stop valves completely (for both the liquid and gas stop valves).
T
his will completel
y
connect the re
f
ri
g
erant lines o
f
the indoor and outdoor units.
•
I
f
the stop valves are le
f
t closed and the unit is operated, the compressor and
contro
l
va
l
ves w
ill
b
e
d
ama
g
e
d
.
• Use a leak detector or soap
y
water to check
f
or
g
as leaks at the pipe connection
sec
ti
o
n
s
o
f th
e
ou
t
doo
r
u
nit.
• Do not use the re
f
ri
g
erant
f
rom the unit to pur
g
e air
f
rom the re
f
ri
g
erant lines.
• A
f
ter the valve work is completed, ti
g
hten the valve caps to the correct torque:
2
0 to
2
5 N·m, 14 to 18 ft·lbs
(
2
0
0 to
2
5
0 kgf·cm).
F
ailure to replace and tighten the caps may result in refrigerant leakage. In add
i
-
t
ion, do not dama
g
e the insides o
f
the valve caps as the
y
act as a seal to prevent
r
efrigerant leakage
.

Use sealant to seal the ends o
f
the thermal insulation around the pipe connection
s
ections to prevent water from enterin
g
the thermal insulation
.

(Fig. 4-1
)
C
opper pipe
O
.D. Flare dimension
s
ø
A dimensions
(
mm
)
(
inch
)
(
mm
)
(
inch
)
ø
6.3
5
1
/4” 8.7 - 9.
1
11/3
2
-
2
3
/64
ø
9.5
2
3/8”
1
2
.
8 - 13
.
2
1/
2
- 33/6
4
ø1
2
.7
1/
2
”
16.
2
-
16
.
6
4
1
/6
4 -
2
1
/3
2
ø1
5.
88
5/8
”
19
.
3
-
19
.7
49/6
4 -
2
5/3
2

(Fig. 4-1
)
C
opper pipe
O
.D.
F
lare nut
O
.D.
T
i
g
htenin
g
torque
(
mm)
(
inch)
(
mm
)
(inch
)
(N·m
)
(
ft·lbs)
ø
6.3
5
1
/4”
17
43/64
1
4 - 18
1
0 - 13
ø9.5
2
3/8”
22
7/
8
34 -
4
2
2
5 - 3
0
ø
1
2
.
7
1
/
2
”
2
6
1 -
3/64
4
9
-
61
35
- 4
4
ø
15.8
8
5/8
”
2
9
1 -
9/64
68
-
8
2
49
-
59




Fi
g
. 4-
1
A1
2
,
A
18
A
2
4
-
A4
2
G
as sid
e
P
ipe size
(
mm, inch
)
ø
1
2
.7, 1
/
2
”
ø15.88, 5
/
8
”
Li
q
uid sid
e
P
ipe size (mm, inch
)
ø6.35, 1/4”
ø
9.5
2
,
3/8
”

1



(
1
)








(2
)









Model
Ma
x
h
e
i
g
ht
dif
f
f
f
erence
f
f
A
dditional ref
r
i
g
e
r
a
nt charging amount (kg/oz
)
A
12, A
1
8
30 m, 100 f
t
f
f
30 m, 100 f
t
f
f
0
0.06
k
g 0.11 k
g
0.17 kg
–––
–
–
–
–
2
o
z
4
o
z
6
oz
A
24
,
A30
,
A
3
6
50 m, 165 f
t
f
f
30 m, 100 f
t
f
f
0
0
.
1
7
k
g
0
.
3
4 k
g
0
.
51
k
g
0
.
68
k
g
0
.
85
k
g
1
.
02
k
g
1
.
19
k
g
1
.
36
k
g
1
.
53
k
g
1
.7
0
k
g
6
o
z
12
o
z
18
o
z
2
4
o
z
30
o
z
36
o
z
4
2
o
z
48
o
z
54
o
z
60
oz
A4
2
50 m, 165 f
t
f
f
30 m, 100 f
t
f
f
0
000
0
.
1
7
k
g
0
.
3
4
k
g
0
.
51
k
g
0
.
68
k
g
0
.
85
k
g
1
.
02
k
g
1
.
19
k
g
6
o
z
12
o
z
1
8
o
z
24
o
z
3
0
o
z
3
6
o
z
42
o
z
Max
pip
e
l
en
g
t
h
2
0
m
2
5
m
27
m
3
0
m
33.5
m
36.
6
m
4
0
m
43
m
4
5.
5
m
48.
8
m
50 m
7
0
f
t
f
f
80
f
t
f
f
90
f
t
f
f
1
00
f
t
f
f
1
1
0
f
t
f
f
1
2
0
f
t
f
f
1
30
f
t
f
f
14
0
f
t
f
f
150
f
t
f
f
160
f
t
f
f
1
65
f
t
6
4. Installing the re
f
rigerant pipin
g
4.4. Re
f
ri
g
erant pipe airti
g
ht testin
g
method
(
1
)
C
onnect the testin
g
tools.
•
Make sure the stop valves


are c
l
ose
d
an
d
d
o not open t
h
em
.
•
Add pressure to the re
f
ri
g
erant lines throu
g
h the service port

o
f
the liquid stop valve

.
(
2
)
Do not add pressure to the speci
fi
ed pressure all at once; add pressure little b
y
little.


Pressurize to 0.5 MPa
(
5 k
gf/
c
m
2
G)
, wait 5 minutes, and make sure the pressure does
n
o
t
dec
r
ease.


Pressurize to 1.5 MPa
(
15 k
gf/
c
m
2
G)
, wait 5 minutes, and make sure the pressure
does
n
o
t
dec
r
ease.


Pressurize to 4.15 MPa
(
41.5 k
gf/
cm
2
G)
and measure the surroundin
g
temperature
and re
f
ri
g
erant pressure
.
(
3
)
I
f
the speci
fi
ed pressure holds
f
or about one da
y
and does not decrease, the pipes have
p
asse
d
t
h
e test an
d
t
h
ere are no
l
ea
k
s
.
•
I
f
the surroundin
g
temperature chan
g
es b
y
1
°C
, the pressure will chan
g
e b
y
about 0.03
M
Pa
(
0.3 k
gf/
c
m
2
G)
. Make the necessar
y
corrections
.
(
4
)
I
f
the pressure decreases in steps
(
2
)
or
(
3
)
, there is a
g
as leak. Look
f
or the source o
f
th
e
g
as
l
ea
k
.
4.5. Stop valve openin
g
metho
d
(
1
)
G
as side o
f
A
2
4
-
A4
2
(
Fi
g
. 4-5
)

Remove the cap, pull the handle toward you and rotate 1/4 turn in a counte
r
-
clockwise direction to open
.

Make sure that the stop valve is open completely, push in the handle and rotate
the cap back to its ori
g
inal position.
(
2
)
Liquid side of A
2
4
-
A4
2
and Gas/Li
q
uid side of A
1
2
, A18 (Fig. 4-6)

Remove the cap and turn the valve rod counterclockwise as far as it will go with
the use o
f
a 4 mm hexa
g
onal wrench.
S
top turnin
g
when it hits the stopper
.
(ø6.35, 1/4 inch: Approximately 4.5 revolutions) (ø9.
5
2
, 3/8 inch: Approximately
1
0 revolutions
)

Make sure that the stop valve is open completely, push in the handle and rotate
he cap back to its ori
g
inal position.

Valv
e

Unit side

Operation section

Ca
p

Local pipe side

Pipe cove
r

Service por
t

Wrench hole
R
efrigerant pipes are protectively wrapped for
A
2
4
-
A4
2
•
T
he pipes can be protectivel
y
wrapped up to a diameter of ø90 mm, 3-35/64
inch be
f
ore or a
f
ter connectin
g
the pipes.
C
ut out the knockout in the pipe cover
f
ollowin
g
the
g
roove and wrap the pipes.
P
ipe inlet gap for A
2
4
-
A4
2
•
U
se putty or sea
l
ant to sea
l
t
h
e p
i
pe
i
n
l
et aroun
d
t
h
e p
i
pes so t
h
at no gaps
r
emain.
(
I
f
the
g
aps are not closed, noise ma
y
be emitted or water and dust will
e
nter the unit and breakdown ma
y
result.
)
F
i
g
.
4
-7

Double spanner section
(
Do not appl
y
a spanner other than to this sec
-
tion.Doin
g
so would cause re
f
ri
g
erant leaks.
)

S
eal section
(S
eal the end o
f
the heat insulation material at
the pipe connection section with whatever seal
material
y
ou have on hand so that water does
not in
fi
ltrate the heat insulation material.
)

Handl
e
P
recautions when using the charge valve (Fig.4-7)
Do not tighten the service port too much when installing it, otherwise, the valve
gp g,,
cor
e
could be deformed and become loose, causing a gas leak.
,gg
A
fter positioning section

i
n t
h
e
d
es
i
re
d
di
rect
i
on, turn sect
i
on

on
l
y an
d
t
i
g
h
ten
i
t.
D
o not further tighten sections

an
d

together after tightening section

.
*
The figure to the left is an example only.
T
he stop valve shape, service port po
-
sition, etc., may vary according to the
model
.
*
Turn section

only
.
(Do not further tighten sections

and

together.)

C
har
g
e hose

S
ervice por
t

S
to
p
v
a
l
v
e
<Li
q
uid side
>

S
to
p
v
a
l
v
e
<
G
as side
>

Se
r
v
ic
e
po
r
t

Op
en/Close sectio
n














Loca
l
p
i
pe

Sealed
,
same
w
a
y
f
or gas side
f
f

P
i
p
e
c
o
v
er

D
o not use a wrench her
e
.
Ref
r
i
g
e
r
a
nt leakage m
a
y
result.

Use 2 wrenches her
e
.
F
ig. 4-4
Fig. 4-5
Fi
g
. 4-
6
4
.6. Addition of refrigeran
t
• Additional char
g
in
g
is not necessar
y
i
f
the pipe len
g
th does not exceed
2
0
m
,
70
f
t
f
or A1
2
-A36, 30 m 100
f
t
f
or A4
2
.
•
If
the pipe len
g
th exceeds the speci
fi
ed len
g
th above, char
g
e the unit with add
i
-
tional R410A re
f
ri
g
erant accordin
g
to the permitted pipe len
g
ths in the chart below
.
*
When the unit is stopped, charge the unit with the additional refrigerant through
t
he liquid stop valve a
f
ter the pipe extensions and indoor unit have been vac
u
-
u
m
i
z
ed.
When the unit is operatin
g
, add re
f
ri
g
erant to the
g
as check valve usin
g
a
safety charger. Do not add liquid refrigerant directly to the check valve
.
*
A
f
ter char
g
in
g
the unit with re
f
ri
g
erant, note the added re
f
ri
g
erant amount on
t
he service label (attached to the unit)
.
Re
f
er to the
“
1.5. Usin
g
R410A re
f
ri
g
erant air conditioners”
f
or more in
f
ormation.
• Be careful when installing multiple units. Connecting to an incorrect indoor unit
can lead to abnormally high pressure and have a serious effect on operation pe
r
-
f
ormance
.

7
4. Installing the re
f
rigerant pipin
g
4
.7. For twin combination
(
For A24, A36 onl
y)
Re
f
ri
g
erant pipin
g
limitation o
f
len
g
th, hei
g
ht di
ff
erence are shown in the
fig
ure.
(
Fi
g.
4-8
)

I
n
doo
r
u
n
i
t

O
utdoor unit

Multi distribution pipe
(
option
)

H
ei
g
ht di
ff
erence
(
Indoor unit-
O
utdoor unit
)
Max. 30 m, 100
f
t

H
ei
g
ht di
ff
erence
(
Indoor unit-Indoor unit
)
Max. 1 m, 3
ft
5.
D
ra
i
na
g
e p
i
p
i
n
g
wor
k
O
utdoor unit draina
g
e pipe connectio
n
When drain pipin
g
is necessar
y
, use the drain socket or the drain pan
(
option
).
Fig. 4-
8
A1
2
,
A
18
A
2
4
-
A4
2
D
r
ai
n
socke
t PAC-SG61DS-
E
D
rain pan PAC-SG63DP-E
P
AC-SG64DP-E
6
. Electrical wor
k
6.1.
O
utdoor unit (Fig. 6-1, Fig. 6-2)

R
emove t
h
e serv
i
ce
p
ane
l.

W
ire the cables referring to the Fig. 6-1 and the Fig. 6
-
2
.
Fig.
6
-
1
F
ig.
6
-
2
A
12,
A
18





B
C
A

A2
4,
A
36 : A+B+C 50m, 165 ft
|
B
–
C
|8m, 26 f
t






S3
S3
S2
S1
S2S1L1 L2
GR

I
n
doo
r
u
n
it

O
utdoo
r
u
n
i
t

Re
m
o
t
e
co
ntr
olle
r

Main
s
witch
(
Bre
a
k
er
)

E
a
r
t
h
F
o
r
P
o
w
er
F
o
r
P
o
w
er






A24
-
A42





L1 GR L2 S1 S2 S3





Ea
r
th
t
e
r
m
i
n
al

T
e
T
T
r
mi
n
al
b
lo
c
k

C
lam
p

Se
r
vice
pane
l

Wi
r
e
t
he
ca
b
les
so
t
ha
t
th
e
y
do
no
t
con
t
ac
t
th
e
cen
t
e
r
of
th
e
se
r
vic
e
p
anel or the gas
v
al
v
e
.
L1 GR L2 S1 S2 S3

8
CORD COVER
CONDUIT COVER
CABLE STRAP
TERMINAL BED
SERVICE PANEL
CONDUIT PLATE : accessory
GRL2L1 S1 S2 S3
A12
,
A
18
A24
-
A42

S1
S2
S3
S1
S2
S3
S
ingle
ph
as
e
Isola
t
or
3
pole
s
i
so
l
a
t
or
A
-
C
ontrol
O
utdoor
U
n
it
A-
C
ontrol
I
n
door
U
n
it
9
6
. El
ect
ri
ca
l w
o
r
k
W
arn
i
n
g
:
I
n case o
f
A-control wirin
g
, there is hi
g
h volta
g
e potential on the
S
3 terminal caused b
y
electrical circuit desi
g
n that has no electrical insulation between power
l
ine and communication si
g
nal line. There
f
ore, please turn o
ff
the main power suppl
y
when servicin
g
. And do not touch the
S
1,
S
2,
S
3 terminals when the powe
r
i
s energized. I
f
isolator should be used between indoor unit and outdoor unit, please use 3-pole type
.
7
. T
est
r
un
7.1. B
efo
r
e
test
r
u
n
A
f
ter completin
g
installation and the wirin
g
and pipin
g
o
f
the indoor and
outdoor units, check
f
or re
f
ri
g
erant leaka
g
e, looseness in the power suppl
y
or control wirin
g
, wron
g
polarit
y
, and no disconnection o
f
one phase in the
supp
ly
.
Use a 5
00
-volt me
g
ohmmeter to check that the resistance between the
power suppl
y
terminals and
g
round is at least 1.0M
Ω
.
Do not carr
y
out this test on the control wirin
g
(
low volta
g
e circuit
)
terminals.
Warnin
g
:
D
o not use the air conditioner if the insulation resistance is less than 1.0MΩ.
I
nsu
l
at
i
on res
i
stanc
e
Af
ter installation or a
f
ter the power source to the unit has been cut
f
or an extended
period, the insulation resistance will drop below 1 M
Ω
due to re
f
ri
g
erant accumulat-
in
g
in the compressor. This is not a mal
f
unction. Per
f
orm the
f
ollowin
g
procedures
.
1
. Remove the wires
f
rom the compressor and measure the insulation resistance o
f
the compressor.
2. I
f
the insulation resistance is below 1 M
Ω
, the compressor is
f
ault
y
or the resis-
tance dropped due the accumulation o
f
re
f
ri
g
erant in the compressor
.
3. A
f
ter connectin
g
the wires to the compressor, the compressor will start to warm
up a
f
ter power is supplied. A
f
ter suppl
y
in
g
power
f
or the times indicated below,
m
easure t
h
e
i
nsu
l
at
i
on res
i
stance a
g
a
i
n.
•
The insulation resistance drops due to accumulation o
f
re
f
ri
g
erant in the com-
pressor. The resistance will rise above 1 M
Ω
a
f
ter the compressor is warmed
u
p
f
or two to three hours.
(
The time necessar
y
to warm up the compressor varies accordin
g
to atm
o
-
spheric conditions and re
f
ri
g
erant accumulation.
)
• To operate the compressor with re
f
ri
g
erant accumulated in the compressor, the
com
p
ressor must be warmed u
p
at least 1
2
hours to
p
revent breakdown.
4. I
f
the insulation resistance rises above 1 M
Ω
, the compressor is not
f
ault
y.
Caut
i
o
n:
•
Th
e compressor w
ill
not operate un
l
ess t
h
e power supp
ly
p
h
ase connect
i
on
i
s correct
.
•
Turn on the power at least 12 hours be
f
ore startin
g
operation
.
-
S
tartin
g
operation immediatel
y
a
f
ter turnin
g
on the main power switch can result
i
n severe
d
ama
g
e to
i
nterna
l
parts.
K
eep t
h
e power sw
i
tc
h
turne
d
on
d
ur
i
n
g
t
h
e
o
perat
i
ona
l
season.
The
f
ollowin
g
s must be checked as well.
•
The outdoor unit is not
f
ault
y
. LED1 and LE
D
2
on the control board o
f
the outdoor
u
nit
fl
ash when the outdoor unit is
f
ault
y.
•
B
ot
h
t
h
e
g
as an
d
li
qu
id
stop va
l
ves are comp
l
ete
ly
open
.
•
A
protective sheet covers the sur
f
ace o
f
the DIP switch panel on the control board o
f
th
e out
d
oor un
i
t.
R
emove t
h
e protect
i
ve s
h
eet to operate t
h
e
DIP
sw
i
tc
h
es eas
ily
.
• Make sure that the all o
f
the
S
W5 DIP switches
f
or
f
unction chan
g
es on the co
n
-
trol board o
f
the outdoor unit are set to
O
FF. I
f
all o
f
the
S
W
5
switches are not set
to
O
FF, record the settin
g
s and then set all o
f
the switches to
O
FF. Be
g
in recov-
e
rin
g
the re
f
ri
g
erant. A
f
ter movin
g
the unit to a new location and completin
g
the
test run, set the
S
W5 switches to the previousl
y
recorded settin
g
s
.
6
.
2
. Field electrical wirin
g
O
utdoor unit mode
l
A1
2
A
1
8
A
2
4
A30
A36
A4
2
O
utdoor unit power suppl
y
S
in
g
le,
2
08/
2
30
V,
60
H
z
S
in
g
le,
2
08/
2
30
V,
60
H
z
S
in
g
le,
2
08/
2
30
V,
60
H
z
S
in
g
le,
2
08/
2
30
V,
60
H
z
S
in
g
le,
2
08/
2
30
V,
60
H
z
S
in
g
le,
2
08/
2
30
V,
60
Hz
Br
ea
k
e
r
s
iz
e
*4 15 A 15
A
2
5
A
3
0
A
3
0
A
3
0
A
M
inimum circuit ampacit
y
1
3
A1
3
A
1
8
A
2
5
A
2
5
A
2
6
A
M
aximum rating o
f
overcurrent protective devic
e
1
5 A
2
0
A
30
A
40
A
40
A
40
A
W
iring
W
ire No. ×
s
i
ze
O
utdoor unit power suppl
y
2
× Min. AWG 1
4
2
× Min. AWG 1
4
2
× Min. AWG
1
2
2
× Min. AWG 1
0
2
× Min. AWG 1
0
2
× Min. AWG 1
0
O
utdoor unit power suppl
y
earth
1
× Min. AW
G
1
4
1
× Min. AW
G
14
1
× Min. AW
G
1
2
1 × Min. AW
G
1
0
1 × Min. AW
G
1
0
1 × Min. AW
G
1
0
I
ndoor unit-Outdoor uni
t
*
1
3 × AWG 16 (polar) 3 × AWG 16 (polar)
3
× AWG 16 (polar)
3
× AWG 16 (polar)
3
× AWG 16 (polar)
3
× AWG 16 (polar
)
I
ndoor unit eart
h
*
1
1
× Min. AW
G
1
6
1
× Min. AW
G
1
6
1 × Min. AW
G
1
6
1 × Min. AW
G
1
6
1 × Min. AW
G
1
6
1 × Min. AW
G
1
6
Remote controller-Indoor uni
t
*
2
2
× AWG 22 (Non-polar
)
2 × AWG
22
(Non-polar
)
2
× AWG
22
(Non-polar)
2
× AWG 22 (Non-polar)
2
× AWG 22 (Non-polar
)
2 × AWG
22
(Non-polar
)
C
ircuit
rat
i
n
g
O
utdoor unit L1-L
2
*3
A
C
2
0
8
/
2
30
V
A
C
2
0
8
/
2
30
V
A
C
2
0
8
/
2
30
V
A
C 2
0
8
/
2
30
V
A
C 2
0
8
/
2
30
V
A
C 2
0
8
/
2
30
V
I
ndoor unit-
O
utdoor unit
S
1-
S
2
*
3
AC
2
08/
2
30
V
AC
2
08/
2
30
V
AC
2
08/
2
30
V
AC
2
08/
2
30
V
AC
2
08/
2
30
V
AC
2
08/
2
30
V
I
ndoor unit-Outdoor unit S
2
-
S
3
*
3D
C
2
4
V
DC
2
4
V
D
C
2
4
V
DC
2
4
V
DC
2
4
V
DC
2
4
V
Remote controller-Indoor uni
t
*3 DC
1
2
V
D
C
1
2
V
DC
1
2
V
D
C
1
2
V
D
C
1
2
V
D
C
1
2
V
*
1.
M
ax. 45 m
,
147 f
t
If
2
.
5
m
m
2
used
,
Max. 50 m
,
164 f
t
If
2
.
5
mm
2
used and S3 se
p
arated, Max. 80 m,
2
6
2
f
t
*
2
.
The 10 m, 30
f
t wire is attached in the remote controller accessor
y
. Max 1500
ft
*
3. The
fi
gures are N
O
T always against the ground
.
S
3 terminal has DC
2
4 V against
S
2
terminal. However between S3 and S1, these terminals are NOT electrically insulataed by the transformer or other device
.
*4.
U
se earth leaka
g
e breaker
(
NV
)
Notes:
1.
Wirin
g
size must compl
y
with the applicable local and national code.
2.
U
se copper suppl
y
wires
.
3
.
U
se wires rated 600V or more for the power suppl
y
cables and the indoor/outdoor unit connectin
g
cables
.
4.
I
nstall an earth longer than other cables
.
Never splice the power cable or the indoor-outdoor connection cable, otherwise it ma
y
result in a smoke, a
fi
re or communication
f
ailure
.

10
8. Special Function
s
8
.1. Low noise mode
(
on-site modification
)
(
Fi
g
. 8-1
)
By
per
f
ormin
g
the
f
ollowin
g
modi
fi
cation, operation noise o
f
the outdoor unit can b
e
r
educed b
y
about
3
-4 dB.
T
he low noise mode will be activated when a commerciall
y
available timer or th
e
contact input o
f
an
O
N
/O
FF switch is added to the
C
NDM connector
(
option
)
on the
control board o
f
the outdoor unit.
• The capacit
y
ma
y
be insu
ffi
cient accordin
g
to the outdoor temperature and condi
-
tions
,
etc
.

C
omplete the circuit as shown when usin
g
the external input adapter
(
PA
C-
SC
36NA
)
.
(O
ption
)

S
W1
O
N: Low noise mod
e
S
W1
O
FF: Normal operation

C
ircuit dia
g
ram example
(
low noise mode
)

O
n-site arran
g
emen
t

External input adapter
(
PA
C
-
SC
36NA
)
8.3. Re
f
rigerant collecting (pump down)
P
erform the following procedures to collect the refrigerant when moving the indoor
u
n
i
t
o
r t
he
ou
t
doo
r
u
n
i
t.

S
upply power (circuit breaker)
.
*
When power is supplied, make sure that
“C
ENTRALLY
CO
NTR
O
LLED” is not
displayed on the remote controller. If “CENTRALLY CONTROLLED” is dis
-
p
layed, the refrigerant collecting (pump down) cannot be completed normally
.
*
S
tart-up o
f
the indoor-outdoor communication takes about 3 minutes a
f
ter the
p
ower (circuit breaker) is turned on. Start the pump-down operation 3 to 4 min
-
utes after the power (circuit breaker) is turned ON.

A
fter the li
q
uid sto
p
valve is closed, set the SWP switch on the control board o
f
the outdoor unit to ON. The compressor (outdoor unit) and fans (indoor and out
-
door units) start operating and refrigerant collecting operation begins. LED1 and
LED
2
o
n th
e
co
ntr
o
l
boa
r
d
of
th
e
ou
t
doo
r
u
nit
a
r
e
lit
.
*
O
nl
y
set the
S
WP switch
(
push-button t
y
pe
)
to
O
N i
f
the unit is stopped. Ho
w
-
ever, even if the unit is sto
pp
ed and the SWP switch is set to ON less than
three minutes after the compressor stops, the refrigerant collecting operation
c
annot be
p
erformed. Wait until com
p
ressor has been sto
pp
ed for three mi
n
-
utes and then set the SWP switch to ON again.
R
ed





S
W
1
C
ND
M




F
ig.
8
-
1

B
ecause t
h
e un
i
t automat
i
ca
lly
stops
i
n a
b
out two to t
h
ree m
i
nutes w
h
en t
h
e re
-
f
ri
g
erant collectin
g
operation is completed
(
LED1 o
ff
, LED
2
lit
)
, be sure to quickl
y
c
lose the gas stop valve. I
f
LED1 is lit and LED
2
is o
ff
and the outdoor unit is
s
topped, re
f
ri
g
erant collection is not properl
y
per
f
ormed.
O
pen the liquid stop
valve completel
y
, and then repeat step
2
a
f
ter three minutes have passed
.
*
I
f
the re
f
rigerant collecting operation has been completed normally
(
LED1 o
ff
,
LED
2
lit), the unit will remain stopped until the power supply is turned off.

T
urn o
ff
the power suppl
y
(
circuit breaker
).
*
Note that when the extension pipin
g
is ver
y
lon
g
with lar
g
e re
f
ri
g
erant amount,
it ma
y
not be possible to per
f
orm a pump-down operation.
W
arn
i
n
g:
Wh
e
n pumpin
g
down the refri
g
erant, stop the compressor before disconnect
-
i
n
g
the re
f
ri
g
erant pipes. The compressor may burst i
f
air etc.
g
et into it.
B
row
n
Oran
ge

Circuit diagram example (Demand function)

On-site arrangemen
t
8
.2. Demand function (on-site modification) (Fig. 8-2
)
B
y performing the following modification, energy consumption can be reduced to 0
–100% of the normal consum
p
tion.
T
he demand function will be activated when a commercially available timer or the
contact input of an ON/OFF switch is added to the CNDM connector (option) on the
co
ntr
o
l
boa
r
d
o
f th
e
ou
t
doo
r
u
nit.

C
omplete the circuit as shown when using the external input adapte
r
(PAC-SC36NA). (Option
)

B
y setting SW7-1 and SW7-
2
on the control board of the outdoor unit, the ene
r
-
g
y consumption (compared to the normal consumption) can be limited as shown
belo
w.
S
W7-
1
S
W7-
2
Ener
gy
consumption
(S
W
2
O
N
)
O
F
F
O
FF 0
%
(S
top
)
ON OFF
5
0
%
O
F
F
O
N
7
5
%
Red





S
W
2
C
ND
M




B
row
n
Orang
e
F
ig. 8-
2
7.
2
. T
est
r
u
n
7.2.1. Using
S
W4 in outdoor uni
t
1
)
PUH Type, PUZ Type
SW4-
1
O
N
C
oolin
g
operatio
n
S
W4-
2
OFF
S
W4-
1
ON
H
eating operation
S
W4-
2
ON
2
)
PUY T
y
p
e
S
W4-
1
ON
Cooling operatio
n
S
W4-
2
O
N or
O
F
F
*
A
fter performing the test run, set SW4-1 to OFF
.
•
Af
ter power is supplied, a small clickin
g
noise ma
y
be heard
f
rom the inside o
f
the outdoor unit. The electronic expansion valve is opening and closing. The unit
is not faulty
.
•
A
few seconds after the compressor starts, a clanging noise may be heard from
the inside of the outdoor unit. The noise is coming from the check valve due to
the small difference in pressure in the pipes. The unit is not faulty
.
The test run operation mode cannot be changed by DIP switch SW4-2 durin
g
t
he test run. (To change the test run operation mode during the test run, sto
p
t
he test run by DIP switch SW4-1. After changing the test run operation mode
,
resume the test run by switch SW4-1.
)
7.
2
.
2
. Usin
g
remote controlle
r
R
e
f
e
r t
o
th
e
in
doo
r
u
nit in
s
t
a
ll
a
ti
o
n m
a
n
ua
l
.
7
. T
est
r
un

O
utdoor unit control boar
d

Max. 10 m
,
33
ft

E
xternal input adapter
(
PA
C
-
SC
36NA
)

O
utdoor unit control board

M
ax. 10 m, 33 ft

11
123456
S
et the re
f
ri
g
erant address usin
g
the DIP switch o
f
the outdoor unit.

Wirin
g
f
rom the Remote
C
ontro
l
T
his wire is connected to TB5
(
terminal board
f
or remote controller
)
o
f
the indoor
u
nit
(
non-polar
)
.

When a Di
ff
erent Re
f
ri
g
erant
Sy
stem
G
roupin
g
is Used
.
Up to 16 re
f
ri
g
erant s
y
stems can be controlled as one
g
roup usin
g
the slim MA
r
e
m
o
t
e
co
ntr
olle
r
.
N
ote:
I
n sin
g
le re
f
ri
g
erant s
y
stem
(
twin
)
, there is no need o
f
wirin
g

.

O
utdoor unit

I
n
doo
r
u
n
it

Mas
t
e
r r
e
m
o
t
e
co
ntr
oller

Subordinate remote controlle
r

Standard 1:1 (Refrigerant address = 00
)

Simultaneous twin (Refrigerant address = 01)

Simultaneous twin (Refrigerant address =
0
2
)

S
W 1 -
3
~
6

S
W 1 - 3 ~
6

S
W 1 -
3
~
6
9.
S
ystem control (Fig. 9-1)
Fig. 9-
1
S
W
1
Fu
n
c
ti
o
n t
ab
l
e
<SW1
>
Function
O
peration accordin
g
to switch settin
g
ON
OFF
S
W
1
f
unctio
n
settin
g
s
1
Compulsor
y
defrosting Start
N
orma
l
2
E
rror histor
y
c
lear
C
lea
r
N
orma
l
3
4
5
6
R
e
f
ri
g
eran
t
s
y
stem a
d
-
d
ress sett
i
n
g
S
ettin
g
s
f
or outdoor unit addresses
0
to
15
TB1













TB1
TB1
TB4
TB5
TB4
TB5
TB4
TB4
TB5
TB4







ON
O
F
F
ON
OF
F
O
N
OF
F
3
4
5
6
3
4 5
6
3
4 5
6
ON
O
F
F



1
2
3-15/16 (5-29/32)
19-11/16 (39-3/8)
7-7/8 (11-13/16)
39-3/8 (59-1/16)
39-3/8 (59-1/16) 11-13/16 (19-11/16)
19-11/16 (39-3/8) 3-15/16 (5-29/32)
15-3/4 (23-5/8) 39-3/8 (78-23/32)
39-3/8 (59-1/16)
19-11/16 (31-1/2)
5-29/32
39-3/8 (59-1/16) 11-13/16 (19-11/16)
15-3/4 (23-5/8)
78-23/32 (118-3/32)
F
ig.
2
-
6
F
i
g
. 2-
8
Fig.
2
-
9
Fi
g
.
2
-
10
F
i
g
.
2
-
12
Fi
g
.
2
-
1
4
Fi
g
. 2-15
F
ig. 2-16
F
i
g
.
2
-
17
Fig. 2-18
3-15/16
(
7-7/8
)
3-15/16
(
7-7/8
)*
7-7/8
(
11-13/16
)
19-11/16 (39-3/8) 3-15/16 (5-29/32)
i
nc
h
Fig. 2-
7
Max. 19-11/16
Max
7-7/8 (11-13/16)
39-3/8
F
ig. 2-11
5-
2
9/3
2
(9-
2
7/3
2
)
5-
2
9/3
2
(9-
2
7/3
2
)*
39-3/8 (59-1/16)
11-13/16 (19-11/16)
Max. 19-11/16
Ma
Fig.
2
-
13
11-13/16 (19-11/16)
39-3/8 (59-1/16)
Max. 11-13/16
39-3/8 (59-1/16)

HEAD
O
F
FI
CE
:
TOKYO
BLD
G
.
,
2
-
7
-3,
M
A
R
U
NOUCHI
,
C
H
I
Y
O
D
A
-
K
U
,
T
O
K
Y
O
1
0
0-831
0
,
J
A
P
A
P
P
N
P
lease be sure to
p
ut the contact address/tele
p
hone number o
n
this manual be
f
ore handing it to the customer
.
T
his product is designed and intended for use in the residential,
commerc
i
a
l
an
d
ligh
t-
i
n
d
ustr
i
a
l
env
i
ronment
.
BG
7
9U896
H
0
7 Printed in Ja
p
a
n