Mitsubishi Electric MXZ-3C24NA2 User manual

Split-type Air-Conditioner
MXZ-3C24NA2
MXZ-3C30NA2
MXZ-4C36NA2
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Installation Manual For INSTALLER
 This manual only describes the installation of outdoor unit.
When installing the indoor unit, refer to the installation manual of indoor unit.
Any structural alterations necessary for installation must comply with local build-
ing code requirements.
Notice d’installation
Destinée à l ’ INSTALLATEUR
 Cette notice ne décrit que l’installation de l’appareil extérieur.
Lors de l’installation de l’appareil intérieur, consultez la notice d’installation de cet
appareil.
Toute altération structurelle requise pour l’installation doit être conforme aux exi-
gences du code du bâtiment local.
Manual de instalación Para el INSTALADOR
 En este manual sólo se describe la instalación de la unidad exterior.
Para instalar la unidad interior, consulte el manual de instalación de dicha uni-
dad.
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En-1
■Do not install the unit by yourself (user).
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■Perform the installation securely referring to the installation manual.
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IDOOLQJRUOHDNDJHRIZDWHU
■ When installing the unit, use appropriate protective equipment and tools
for safety.
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■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
FDXVLQJLQMXU\
■ 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.
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ZRUNLWFRXOGUHVXOWLQD¿UHRUDQHOHFWULFVKRFN
■ Do not damage the wires by applying excessive pressure with parts or
screws.
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■ Be sure to cut off the main power in case of setting up the indoor P.C.
board or wiring works.
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■8se the speci¿ed wires to connect the indoor and outdoor units securely
and attach the wires ¿rmly to the terminal block connecting sections so
the stress of the wires is not applied to the sections.
 ,QFRPSOHWHFRQQHFWLQJDQGVHFXULQJFRXOGFDXVH¿UH
■ Do not install the unit in a place where inÀammable gas may leak.
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explosion.
■Do not use intermediate connection of the power cord or the extension
cord and do not connect many devices to one AC outlet.
 ,WFRXOG FDXVH D ¿UH RU DQ HOHFWULF VKRFNGXHWR GHIHFWLYH FRQWDFW GHIHFWLYH
insulation, exceeding the permissible current, etc.
■ Be sure to use the parts provided or speci¿ed parts for the installation
work.
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■
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.
If there is dust, clogging, or loose parts on the power supply plug or the outlet, it
FRXOGFDXVHHOHFWULFVKRFNRU¿UH,IORRVHSDUWVDUHIRXQGRQWKHSRZHUVXSSO\
plug, replace it.
■ Attach the electrical cover to the indoor unit and the service panel to the
outdoor unit securely.
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XQLWDUHQRWDWWDFKHGVHFXUHO\LWFRXOGUHVXOWLQD¿UHRUDQHOHFWULFVKRFNGXH
to dust, water, etc.
■ When installing, relocating, or servicing the unit, make sure that no sub-
stance other than the speci¿ed refrigerant (540A) enters the refrigerant
circuit.
Any presence of foreign substance such as air can cause abnormal pressure
ULVHDQGPD\UHVXOWLQH[SORVLRQRULQMXU\7KHXVHRIDQ\UHIULJHUDQWRWKHUWKDQ
WKDWVSHFL¿HGIRUWKHV\VWHPZLOOFDXVHPHFKDQLFDOIDLOXUHV\VWHPPDOIXQFWLRQ
RUXQLWEUHDNGRZQ,QWKHZRUVWFDVHWKLVFRXOGOHDGWRDVHULRXVLPSHGLPHQW
to securing product safety.
■ Do not discharge the refrigerant into the atmosphere. If refrigerant leaks
during installation, ventilate the room.
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DQWOHDNDJHPD\FDXVHVXIIRFDWLRQ9HQWLODWHWKHURRP
■ Check that the refrigerant gas does not leak after installation has been
completed.
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KHDWHUVSDFHKHDWHUVWRYHHWFKDUPIXOVXEVWDQFHVZLOOEHJHQHUDWHG
■ 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
RULQMXU\
■ When pumping down the refrigerant, stop the compressor before discon-
necting the refrigerant pipes.
If the refrigerant pipes are disconnected while the compressor is running and
WKHVWRSYDOYHLVRSHQDLUFRXOGEHGUDZQLQDQGWKHSUHVVXUHLQWKHUHIULJHUD-
tion cycle could become abnormally high. This could cause the pipes to burst
RULQMXU\
■ 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
ZKHQWKHVWRSYDOYHLVRSHQDLUFRXOGEHGUDZQLQDQGWKHSUHVVXUHLQWKH
refrigeration cycle could become abnormally high. This could cause the pipes
WREXUVWRULQMXU\
■ Fasten a Àare nut with a torque wrench as speci¿ed in this manual.
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■ The unit shall be installed in accordance with national wiring regulations.
■Ground the unit correctly.
Donotconnectthegroundtoagaspipe,waterpipe,lightningrodortelephone
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■Be sure to install a Ground Fault Interrupt (GFI) circuit breaker.
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HOHFWULFVKRFNRU¿UH
-2. SPECIFICATI2NS
-. T+E F2//2WING S+2U/D A/WA<S BE 2BSE59ED F25 SAFET<
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 %HVXUHWRREVHUYHWKHZDUQLQJVDQGFDXWLRQVVSHFL¿HGKHUHDVWKH\LQFOXGHLPSRUWDQWLWHPVUHODWHGWRVDIHW\
 $IWHUUHDGLQJWKLVPDQXDOEHVXUHWRNHHSLWWRJHWKHUZLWKWKH23(5$7,1*,16758&7,216IRUIXWXUHUHIHUHQFH
CAUTION &RXOGOHDGWRVHULRXVLQMXU\LQSDUWLFXODUHQYLURQPHQWVZKHQRSHUDWHGLQFRUUHFWO\
■Perform the drainage/piping work securely according to the installation
manual.
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VRDNLQJDQGGDPDJLQJKRXVHKROGJRRGV
■Do not touch the air inlet or the aluminum ¿ns of the outdoor unit.
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■Do not install the outdoor unit where small animals may live.
If small animals enter and touch the electric parts inside the unit, it could
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area around the unit clean.
WARNING &RXOGOHDGWRGHDWKVHULRXVLQMXU\HWF
5equired Tools for Installation
3KLOOLSVVFUHZGULYHU
/HYHO
Scale
8WLOLW\NQLIHRUVFLVVRUV
Torque wrench
Wrench (or spanner)
LQPPKH[DJRQDO
wrench
Flare tool for R410A
Gauge manifold for R410A
9DFXXPSXPSIRU5$
Charge hose for R410A
Pipe cutter with reamer
ENGLISH
C2NTENTS
%()25(,167$//$7,21 ............................................................1
2. OUTDOOR UNIT INSTALLATION ...............................................4
)/$5,1*:25.$1'3,3(&211(&7,21...............................5
385*,1*352&('85(6/($.7(67$1'7(67581.........5
5. PUMPING DOWN........................................................................7
Model Power supply Pipe length and height difference

5DWHG9ROWDJH Frequency Max. pipe length per indoor
XQLWIRUPXOWLV\VWHP Max. height difference
Max. no. of bends per in-
GRRUXQLWIRUPXOWLV\VWHP 5HIULJHUDQWDGMXVWPHQW$
0;=&1$
0;=&1$
0;=&1$
9 +] IWPIWP 49 ft. (15 m)  R]HDFKIWJP
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ZLOOEHLQVXI¿FLHQW
*2 Use a copper pipe or a copper-alloy seamless pipe.
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*4 Refrigerant pipe bending radius must be 4 in. (100 mm) or more.
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%HVXUHWRXVHWKHLQVXODWLRQRIVSHFL¿HGWKLFNQHVV([FHVVLYHWKLFNQHVVPD\
FDXVHLQFRUUHFWLQVWDOODWLRQRIWKHLQGRRUXQLWDQGLQVXI¿FLHQWWKLFNQHVVPD\
cause dew drippage.
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is required. (No additional charge is required for pipe length less than 98 ft.
P
Additional refrigerant (ft.) = A × (pipe length (ft.) – 98)
5
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. BEF25E INSTA//ATI2N

En-2
-4. SE/ECTING T+E INSTA//ATI2N /2CATI2N
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 :KHUHULJLGZDOORUVXSSRUWLVDYDLODEOHWRSUHYHQWWKHLQFUHDVHRIRSHUDWLRQ
VRXQGRUYLEUDWLRQ
 :KHUHWKHUHLVQRULVNRIFRPEXVWLEOHJDVOHDNDJH
 :KHQLQVWDOOLQJWKHXQLWEHVXUHWRVHFXUHWKHXQLWOHJV
 :KHUHLWLVDWOHDVWIWPDZD\IURPWKHDQWHQQDRI79VHWRUUDGLR2S-
HUDWLRQRIWKHDLUFRQGLWLRQHUPD\LQWHUIHUHZLWKUDGLRRU79UHFHSWLRQLQDUHDV
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 ,QVWDOOWKHXQLWKRUL]RQWDOO\
 3OHDVHLQVWDOOLWLQDQDUHDQRWDIIHFWHGE\VQRZIDOORUEORZLQJVQRZ,QDUHDV
ZLWK KHDY\ VQRZ SOHDVH LQVWDOO D FDQRS\ D SHGHVWDO DQGRU VRPH EDIÀH
boards.
Note:
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transmitted from there.
Note:
When operating the air conditioner in low outside temperature, be sure to
follow the instructions described below.
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be exposed directly to wind.
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facing the wall.

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the air outlet side of the outdoor unit.
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liable to occur.
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SRXQGVIRUPDOGHK\GHHWFZKLFKPD\FDXVHFKHPLFDOFUDFNLQJ
3. 2bstacles in front (blowing) only
:KHQWKHUHLVDQREVWDFOHLQIURQWRIWKHXQLWDVVKRZQLQWKH¿JXUHRSHQ
VSDFHDERYHEHKLQGDQGRQWKHVLGHVRIWKHXQLWLVUHTXLUHG
2. Front (blowing) side open
$VORQJDVVSDFHLQGLFDWHGLQWKH¿JXUHLVSURYLGHGLWLVDOORZHGWRLQVWDOOWKH
unit where obstacles are behind and on the sides of the unit. (No obstacle
DERYHWKHXQLW
F5EE SPACE 5E4UI5ED A52UND 2UTD225 UNIT
6HUYLFHVSDFH
 :KHQLQVWDOOLQJWKHXQLWLQDQDUHDWKDWLVHQFORVHGZLWKZDOOVVXFKDVD
YHUDQGDKEHVXUHWRKDYHHQRXJKVSDFHDVVKRZQEHORZ
In this case, the air conditioning capacity and power consumption might
deteriorate.
 :KHQLQVWDOOLQJWZRRUPRUHXQLWVGRQRWLQVWDOOWKHXQLWVLQIURQWRUEHKLQG
each other.
. 2bstacles above
When there is no obstacle in front and on the sides of the unit, it is allowed
WRLQVWDOOWKHXQLWZKHUHDQREVWDFOHLVDERYHWKHXQLWRQO\LIWKHVSDFHVKRZQ
LQWKH¿JXUHLVSURYLGHG
6. Service space
3URYLGHVSDFHIRUVHUYLFHDQGPDLQWHQDQFHDVVKRZQLQWKH¿JXUH
RUPRUH
RUPRUH
5. 2bstacles in front, behind and on side(s)
(Unit: inch (mm))
+HLJKWRIWKHREVWDFOHLVRUOHVV
RUPRUH
RUPRUH

or more
RUPRUH
RUPRUH
RUPRUH
RUPRUH
RUPRUH
RUPRUH

or more
RUPRUH

or more

or more

or more
4. 2bstacles in front and behind
The unit can be used by attaching an optional outdoor blowing guide
3$&6+6*(EXWERWKVLGHVDQGWRSDUHRSHQ
RUPRUH
%ORZLQJJXLGH3$&6+6*(
RUPRUH
-3. SE/ECTING 2PTI2NA/DIFFE5ENT-DIAMETE5-2INTS
,IWKHGLDPHWHURIFRQQHFWLRQSLSHGRHVQRWPDWFKWKHSRUWVL]HRIRXWGRRUXQLWXVHRSWLRQDOGLIIHUHQWGLDPHWHUMRLQWVDFFRUGLQJWRWKHIROORZLQJWDEOH
Port size of outdoor unit 2SWLRQDOGLIIHUHQWGLDPHWHUMRLQWVSRUWVL]HRIRXWGRRUXQLWĺdiameter of connection pipe)
0;=& MXZ-4C /LTXLG*DV ĺ3$&3,
ĺ0$&-3(
ĺ3$&6*5-(
ĺ0$&$-3(
ĺ0$&$-3(
Refer to the installation manual of indoor unit for the diameter of connection pipe of indoor unit.
A UNIT 
%&81,7 %'81,7 
(Unit: inch (mm))

(Q
-5. INSTA//ATI2N DIAG5AM
$IWHU WKH OHDN WHVW DSSO\ LQVXODW-
ing material tightly so that there
is no gap.
Whenthe pipingis tobe attachedto
a wall containing metals (tin plated)
or metal netting, use a chemically
WUHDWHGZRRGHQSLHFHLQ
PP RU WKLFNHU EHWZHHQ WKH ZDOO
and the piping or wrap 7 to 8 turns
RI LQVXODWLRQ YLQ\O WDSH DURXQG
the piping.
To use existing piping, perform
&22/ RSHUDWLRQ IRU  PLQXWHV
DQG SXPS GRZQ EHIRUH UHPRYLQJ
WKHROGDLUFRQGLWLRQHU5HPDNHÀDUH
according to the dimension for new
refrigerant.
PA5TS T2BE P529IDED AT <2U5SITE
(A) Power supply cord* 1
% ,QGRRURXWGRRUXQLWFRQQHFWLQJZLUH 1
(C) Extension pipe 1
(D) :DOOKROHFRYHU 1
(E) Piping tape 1
(F) ([WHQVLRQGUDLQKRVHRUVRIW39& KRVHLQPPLQQHU
GLDPHWHURUKDUG39&SLSH93 1
(G) Refrigeration oil Little
amount
+ Putty 1
(I) 3LSH¿[LQJEDQG 2 to 7
- Fixing screw for (I) 2 to 7
. :DOOKROHVOHHYH 1
(L) 6RIW39&KRVHLQPP LQQHUGLDPHWHURUKDUG39&SLSH
93IRUGUDLQVRFNHW 1
* Note:
3ODFH LQGRRURXWGRRU XQLW FRQQHFWLQJ ZLUH % DQG
SRZHUVXSSO\FRUG$DWOHDVWIWPDZD\IURP
WKH79DQWHQQDZLUH
7KH³4¶W\´IRU%WR.LQWKHDERYHWDEOHLVTXDQWLW\
to be used per indoor unit.
More than
LQ
(100 mm)
Open as a rule
0RUHWKDQLQ
(500 mm) if the front and
both sides are open
0RUHWKDQLQPP
0RUHWKDQLQPPLIWKHUH
are obstacles to both sides
Open as a rule
0RUHWKDQLQPP
LIWKHEDFNERWKVLGHVDQGWRS
are open 0RUHWKDQLQ
PP
Units should be installed by licensed contractor according to
local code requirements.
2utdoor unit installation
Air inlet
Air outlet
2-U-shape notched holes
%DVHEROW0
Unit : inch
2utdoor unit installation



î
RYDOKROHV%DVHEROW0
Air inlet



Air inlet
Air outlet
2-U-shape notched holes
%DVHEROW0
Unit : mm
950
600174
2 - 12 × 22
RYDOKROHV%DVHEROW0
Air inlet


417

En-4
2-. INSTA//ING T+E UNIT
 %HVXUHWR¿[WKHXQLW¶VOHJVZLWKEROWVZKHQLQVWDOOLQJLW
 %HVXUHWRLQVWDOOWKHXQLW¿UPO\WRHQVXUHWKDWLWGRHVQRWIDOOE\DQHDUWKTXDNHRUDJXVW
 5HIHUWRWKH¿JXUHLQWKHULJKWIRUFRQFUHWHIRXQGDWLRQ
 'RQRWXVHWKHGUDLQVRFNHWDQGWKHGUDLQFDSVLQWKHFROGUHJLRQ'UDLQPD\IUHH]HDQGLWPDNHVWKHIDQVWRS
2-2. C2NNECTING WI5ES F25 2UTD225 UNIT
 %HVXUHWRXVHVSHFLDOFLUFXLWVIRUURRPDLUFRQGLWLRQHU
 :LULQJZRUNVKRXOGEHEDVHGRQDSSOLFDEOHWHFKQLFDOVWDQGDUGV
 :LULQJFRQQHFWLRQVVKRXOGEHPDGHIROORZLQJWKHGLDJUDP
 6FUHZVVKRXOGEHWLJKWHQHGVRWKH\ZRQ¶WORRVHQ
ELECTRICAL SPECIFICATIONS
OUTDOOR UNIT 0;=&1$ 0;=&1$ 0;=&1$
3RZHUVXSSO\93+$6(+] 
Max. Fuse size (time delay) (A) 25
Min. Circuit Ampacity (A) 22.1 
Fan motor (F.L.A)  
Compressor (R.L.A) 12 12
(L.R.A)  
&RQWUROYROWDJH Indoor unit-Remote controller : (Wireless)
,QGRRUXQLW2XWGRRUXQLW'&9
LQ
PP
LQ
(15 mm)
Lead wire
5HPRYHWKHVHUYLFHSDQHO
5HPRYHWKHFRQGXLWSODWH
$WWDFKWKHFRQGXLWFRQQHFWRUWRFRQGXLWSODWHZLWKORFNQXWWKHQVHFXUH
it to the unit with screws.
&RQQHFWJURXQGZLUHVWRWKH7%VXSSRUW
/RRVHQ WHUPLQDO VFUHZ DQG FRQQHFW LQGRRURXWGRRU XQLW FRQQHFWLQJ
ZLUH%IURPWKHLQGRRUXQLWFRUUHFWO\RQWKHWHUPLQDOEORFN%HFDUHIXO
QRWWRPDNHPLVZLULQJ)L[WKHZLUHWRWKHWHUPLQDOEORFNVHFXUHO\VR
WKDWQRSDUWRILWVFRUHLVDSSHDUHGDQGQRH[WHUQDOIRUFHLVFRQYH\HG
WRWKHFRQQHFWLQJVHFWLRQRIWKHWHUPLQDOEORFN
)LUPO\WLJKWHQWKHWHUPLQDOVFUHZVWRSUHYHQWWKHPIURPORRVHQLQJ$IWHU
WLJKWHQLQJSXOOWKHZLUHVOLJKWO\WRFRQ¿UPWKDWWKH\GRQRWPRYH
7) Perform 5) and 6) for each indoor unit.
8) Connect power supply cord (A).
&ORVHWKHVHUYLFHSDQHOVHFXUHO\0DNHVXUHWKDW3,3(&211(&-
TION is completed.
Connecting order
 &RQQHFW WKH WHUPLQDO EORFN LQ
following order.
A
ĺ%ĺCĺDĺP
C2NNECTING WI5ES AND C2NNECTING G52UND WI5E
 8VHVROLGFRQGXFWRU0LQ$:*RUVWUDQGHGFRQGXFWRU0LQ$:*
 8VHGRXEOHLQVXODWHGFRSSHUZLUHZLWK9LQVXODWLRQ
 8VHFRSSHUFRQGXFWRUVRQO\
* Follow local electrical code.
P2WE5SUPP/< CAB/E AND G52UND WI5E
 8VHVROLGRUVWUDQGHGFRQGXFWRU0LQ$:*
 8VHFRSSHUFRQGXFWRUVRQO\
* Follow local electrical code.
WA5NING:
Use the indoor/outdoor unit connecting wire that meets the Stand-
ards to connect the indoor and outdoor units and ¿x the wire to the
terminal block securely so that no external force is conveyed to the
connecting section of the terminal block. An incomplete connection
or ¿xing of the wire could result in a ¿re.
5emark:
 $GLVFRQQHFWVZLWFKVKRXOGEHUHTXLUHG&KHFNWKHORFDOFRGH
** Use a ring tongue terminal in order to connect a ground wire to terminal.
Connect wires to the matching numbers of terminals.
Be sure to attach each screw to its correspondent terminal when
securing the cord and/or the wire to the terminal block.
7HUPLQDOEORFN
Grounding
terminal **
20/230 9AC
phase 60 +]
Grounding
terminal **
7HUPLQDOEORFN Ground
OUTDOOR UNIT
Power supply
9$&
SKDVHZLUHV+]
Disconnect
switch * Grounding
terminal **
7HUPLQDOEORFN 7HUPLQDOEORFN
INDOOR UNIT
7HUPLQDOEORFN
)RUIXWXUHVHUYLFLQJJLYHH[WUDOHQJWKWRWKHFRQQHFWLQJZLUHV
6HUYLFHSDQHO Screws
Power supply
7HUPLQDOEORFNIRU
LQGRRURXWGRRUXQLW
A – C D
/RFNQXW
Conduit plate
Conduit connector
'XQLWLVIRU&1$RQO\
'XQLWLVIRU&1$RQO\
A – C D
Fix here with
M10 bolts.
0DNHWKHVHWWLQJ
depth deeper.
0DNHZLWKZLGHU
Anchor leg
RUOHVV
Anchor bolt length Anchor bolt pitch
(Unit: inch (mm))

(600)


Conduit plate
2. 2UTD225 UNIT INSTA//ATI2N