Mitsubishi Electric MFZ-KJ09NA User manual

FLOOR TYPE AIR CONDITIONERS
MFZ-KJ09NA MFZ-KJ12NA MFZ-KJ15NA MFZ-KJ18NA
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INSTALLATION MANUAL For INSTALLER
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MANUAL DE INSTALACIÓN PARA EL INSTALADOR
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NOTICE D’INSTALLATION POUR L’INSTALLATEUR
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En-1
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
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AIWHrrHDGLQJ WKLV PDQXDO EH VXrHWo VWorHLW ZLWK WKH OPERATIN*INSTRU&TIONS Ior IXWXrHrHIHrHQFH
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CAUTION &oXOG OHDG Wo VHrLoXV LQMXr\ZKHQ oSHrDWHG LQForrHFWO\
Required Tools for Installation
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LHYHO
SFDOH
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LQ  PP KoOH VDZ
To r TXH ZrHQFK
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ENGLISH
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CONTENTS
 %EFORE INSTALLATION 
 INDOOR UNIT INSTALLATION 
 OUTDOOR UNIT INSTALLATION8
 FLARE &ONNE&TIONPIPE
&ONNE&TION 9
■Do not install the unit by yourself (user).
IPSroSHr or LQFoPSOHWH LQVWDOODWLoQFoXOG FDXVH ¿rH HOHFWrLF VKoFN LQMXr\
GXH Wo WKH XQLW IDOOLQJ or ZDWHr OHDNDJH &oQVXOW DTXDOL¿HG LQVWDOOHr or WKH
GHDOHr IroPZKoP\oXSXrFKDVHG WKH XQLW
■Follow the instructions detailed in the installation manual.
IQFoPSOHWH LQVWDOODWLoQFoXOG FDXVH ¿rHor HOHFWrLF VKoFN LQMXr\GXH Wo WKH
XQLW IDOOLQJ or OHDNDJH oIZDWHr
■When installing the unit, use appropriate protective equipment and tools
for safety.
FDLOXrHWo Go Vo FoXOG FDXVH LQMXr\
■Install the unit securely in a place that can bear the weight of the unit.
IIWKH LQVWDOODWLoQOoFDWLoQFDQQoWEHDr WKH ZHLJKW oIWKH XQLW WKH XQLW FoXOG
IDOO FDXVLQJ LQMXr\
■ 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.
IIWKH FDSDFLW\ oIWKH SoZHr FLrFXLW LV LQVXI¿FLHQW or WKHrHLV LQFoPSOHWH HOHFWrL-
FDO ZorN LW FoXOG rHVXOW LQ D¿rHor DQ HOHFWrLF VKoFN
■Ground the unit correctly.
Do QoWFoQQHFW WKH JroXQG ZLrHWo DJDV SLSH ZDWHr SLSH OLJKWQLQJ roGor
WHOHSKoQH JroXQG DHIHFWLYH JroXQGLQJ FoXOG FDXVH HOHFWrLF VKoFN
■ Do not damage the wires.
DDPDJHG ZLrHV FoXOG FDXVH ¿rH
■ Be sure to shut off the main power when setting up the indoor P.C. board
or wiring.
FDLOXrHWo Go Vo FoXOG FDXVH HOHFWrLF VKoFN
■ 8VHWKHVSHFL¿HGZLUHVWRVHFXUHO\FRQQHFWWKHLQGRRUDQGRXWGRRUXQLWV
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IPSroSHr FoQQHFWLoQFoXOG FDXVH ¿rH
■ 'RQRWLQVWDOOWKHXQLWLQDSODFHZKHUHÀDPPDEOHJDVPD\OHDN
IIJDV OHDNV DQG DFFXPXODWHV DroXQG WKH XQLW LW FoXOG FDXVH DQ H[SOoVLoQ
■Do not use intermediate connection of the power cord or the extension
cord. Do not connect many devices to one AC outlet.
IWFoXOG FDXVH D¿rHor DQ HOHFWrLF VKoFN
■ 8VHWKHSDUWVSURYLGHGRUVSHFL¿HGSDUWVIRUWKHLQVWDOODWLRQZRUN
TKH XVH oIGHIHFWLYH SDrWV FoXOG FDXVH DQ LQMXr\or OHDNDJH oIZDWHr GXH Wo D
¿rH DQ HOHFWrLF VKoFN WKH XQLW IDOOLQJ HWF
■ When plugging the power supply plug into the outlet, make sure that there
is no dust, blockage, or loose parts both in the outlet and on the plug.
Verify that the power supply plug is completely in the outlet.
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LW FoXOG FDXVH HOHFWrLF VKoFN or ¿rH IIOooVH SDrWV DrHIoXQG oQWKH SoZHr VXSSO\
SOXJ rHSODFH LW
■ Securely attach the electrical cover to the indoor unit and the service
panel to the outdoor unit.
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XQLW DrHQoWDWWDFKHG VHFXrHO\ GXVW ZDWHrHWF FoXOG FoOOHFW LQ WKH XQLW DQG FoXOG
FDXVH D¿rHor DQ HOHFWrLF VKoFN
■ When installing, relocating, or servicing the unit, make sure that no sub-
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circuit.
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rLVH DQG PD\ rHVXOW LQ H[SOoVLoQor LQMXr\ TKH XVH oIDQ\ rHIrLJHrDQW oWKHr
WKDQ WKDW VSHFL¿HG Ior WKH V\VWHP ZLOO FDXVH PHFKDQLFDO IDLOXrH V\VWHP PDO-
IXQFWLoQ or XQLW ErHDNGoZQ IQWKH ZorVW FDVH WKLV FoXOG OHDG Wo DVHrLoXV
LPSHGLPHQW Wo VHFXrLQJ SroGXFW VDIHW\
■ Do not discharge the refrigerant into the atmosphere. Check that the
refrigerant gas does not leak after installation has been completed. If
refrigerant leaks during installation, ventilate the room.
IIrHIrLJHrDQW FoPHV LQ FoQWDFW ZLWK D¿rH KDrPIXO JDV FoXOG EH JHQHrDWHG
IIrHIrLJHrDQW JDV OHDNV LQGoorV DQG FoPHV LQWo FoQWDFW ZLWK WKH ÀDPH oID
IDQ KHDWHrVSDFH KHDWHrVWoYH HWF KDrPIXO JDVHV ZLOO EH JHQHrDWHG
■ Use appropriate tools and piping materials for installation.
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DWH WooOV DQG PDWHrLDOV or LPSroSHr LQVWDOODWLoQFoXOG FDXVH WKH SLSHV Wo
EXrVW FDXVLQJ DQ LQMXr\
■ When pumping down the refrigerant, stop the compressor before discon-
necting the refrigerant pipes.
IIWKH rHIrLJHrDQW SLSHV DrHGLVFoQQHFWHG ZKLOH WKH FoPSrHVVor LV rXQQLQJ
DQG WKH VWoSYDOYH LV oSHQ DLr FoXOG EH GrDZQ LQ DQG WKH SrHVVXrHLQ WKH
rHIrLJHrDWLoQF\FOH FoXOG EHFoPH DEQorPDOO\ KLJK FDXVLQJ WKH SLSHV Wo EXrVW
■ When installing the unit, securely connect the refrigerant pipes before
starting the compressor.
IIWKH FoPSrHVVor LV VWDrWHG EHIorHWKH rHIrLJHrDQW SLSHV DrHFoQQHFWHG DQG
WKH VWoSYDOYH LV oSHQ DLr FoXOG EH GrDZQ LQ DQG WKH SrHVVXrHLQ WKH rHIrLJ-
HrDWLoQF\FOH FoXOG EHFoPH DEQorPDOO\ KLJK FDXVLQJ WKH SLSHV Wo EXrVW
■ )DVWHQDÀDUHQXWZLWKDWRUTXHZUHQFKDVVSHFL¿HGLQWKLVPDQXDO
IIIDVWHQHG Woo WLJKW DÀDrHQXW FoXOG ErHDN DQG FDXVH rHIrLJHrDQW OHDNDJH
■ Install the unit according to national wiring regulations.
■Depending on the installation area, install a Ground Fault Interrupt (GFI)
circuit breaker.
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VKoFN FoXOG oFFXr
■Perform the drainage/piping work securely according to the installation
manual.
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DQG GDPDJH KoXVHKoOG LWHPV
■ 'RQRWWRXFKWKHDLULQOHWRUWKHDOXPLQXP¿QVRIWKHRXWGRRUXQLW
TKLV FoXOG FDXVH LQMXr\
■Do not install the outdoor unit where small animals may live.
IIVPDOO DQLPDOV HQWHr WKH XQLW DQG GDPDJH LWV HOHFWrLFDO SDrWV LW FoXOG FDXVH
DPDOIXQFWLoQ VPoNH HPLVVLoQ or ¿rH .HHS WKH DrHD DroXQG WKH XQLW FOHDQ
WARNING &oXOG OHDG Wo GHDWK or VHrLoXV LQMXr\
1. BEFORE INSTALLATION
 PUR*IN*PRO&EDURESLEA.TEST
AND TEST RUN

 PU0PIN*DO:N 

En-2
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MFZ-KJ12NA MFZ-KJ15NA MFZ-KJ18NA
INDOOR UNIT
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FDQ PoWor FLA A  
OUTDOOR UNIT
PoZHr VXSSO\ 9 P+ASE+] 8  
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For OLTXLG 0F=-.-98NA   
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For JDV
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E[FHHGLQJ  IW  P AGGLWLoQDO FKDrJH LV rHTXLrHG
RHIHr Wo WKH WDEOH EHOoZ
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1-3. SPECIFICATIONS
1-3-1. POWER SUPPLY AND INDOOR/OUTDOOR
WIRE CONNECTION
PoZHr VKoXOG EH WDNHQ IroPDQ H[FOXVLYH ErDQFKHG FLrFXLW

:LrLQJ ZorNVKoXOG EH EDVHG oQDSSOLFDEOH WHFKQLFDO VWDQGDrGV
:LrLQJ FoQQHFWLoQV VKoXOG EH PDGH IoOOoZLQJ WKH GLDJrDP
SHFXrHO\ WLJKWHQ VFrHZV
Connecting wires and the ground wire
UVH VoOLG FoQGXFWor 0LQ A:* or VWrDQGHG FoQGXFWor
0LQ A:*
UVH GoXEOH LQVXODWHG FoSSHr ZLrHZLWK  9LQVXODWLoQ
UVH FoSSHr FoQGXFWorVoQO\
FoOOoZOoFDO HOHFWrLFDO FoGHV
Power supply cable and ground wire
UVH VoOLG or VWrDQGHG FoQGXFWor
.-9NA 0LQ A:*
.-8NA 0LQ A:*
UVH FoSSHr FoQGXFWorVoQO\
FoOOoZOoFDO HOHFWrLFDO FoGHV
Note:
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LQJ oQOoFDO FoGH DGLVFoQQHFW VZLWFK QHHGV Wo EH LQVWDOOHG Wo D
SoZHr VXSSO\ FLrFXLW
1-3-2. REFRIGERANT PIPES
To SrHYHQW FoQGHQVDWLoQ LQVXODWH WKH WZo rHIrLJHrDQW SLSHV
RHIrLJHrDQW SLSH EHQGLQJ rDGLXV PXVW EH LQ  PP or PorH
CAUTION
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rLJKW E[FHVVLYH LQVXODWLoQPD\ FDXVH LQForrHFW LQVWDOODWLoQoI
WKH LQGoor XQLW DQG Woo OLWWOH LQVXODWLoQPD\ FDXVH FoQGHQVDWH
Wo IorP
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VLGHV
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WKH SLSH
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XQLWV
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RHIrLJHrDQW DGMXVWPHQW IISLSH OHQJWK H[FHHGV  IW  P
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TKH oXWGoor XQLW LV FKDrJHG ZLWK rHIrLJHrDQW Ior SLSH OHQJWK XS
Wo  IW > P@
1-2. SELECTING THE INSTALLATION LOCATION
INDOOR UNIT
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:KHrHLW LV QoWH[SoVHG Wo GLrHFW VXQOLJKW Do QoW
H[SoVH Wo GLrHFW VXQOLJKW DOVo GXrLQJ WKH SHrLoGIoO-
OoZLQJ XQSDFNLQJ Wo EHIorHXVH
:KHrHHDVLO\ GrDLQHG
AWDGLVWDQFH IW  P or PorHDZD\ IroP\oXr
T9DQG rDGLoOSHrDWLoQoIWKH DLr FoQGLWLoQHr PD\
LQWHrIHrHZLWK rDGLo or T9rHFHSWLoQ AQDPSOL¿Hr PD\
EH rHTXLrHG Ior WKH DIIHFWHG GHYLFH
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DQG LQFDQGHVFHQW OLJKWV IQorGHr Wo PDNH WKH LQIrDrHG
rHPoWH FoQWroOoSHrDWH WKH DLr FoQGLWLoQHr QorPDOO\
TKH KHDW IroPWKH OLJKWV PD\ FDXVH GHIorPDWLoQor
WKH XOWrDYLoOHW PD\ FDXVH GHWHrLorDWLoQ
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REMOTE CONTROLLER
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OUTDOOR UNIT
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Note:
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To SrHYHQW H[SoVXrHWo ZLQG LQVWDOO WKH oXWGoor
XQLW ZLWK LWV DLr LQOHW VLGH IDFLQJ WKH ZDOO DQG
DEDIÀH
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En-3
IQGoor XQLW
:DOO KoOH
VOHHYH &
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VWrDS E
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,167$//$7,21',$*5$0
ACCESSORIES
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IQGoor XQLW!
 DrDLQ KoVH  
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FIELD-SUPPLIED PARTS
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(J)
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En-4
55
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2-2. HOLE DRILLING
 DHWHrPLQH WKH ZDOO KoOH SoVLWLoQ
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2-1. FIXING OF INDOOR UNIT MOUNTING BRACKET
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LQ oWKHr KoOHV
2. INDOOR UNIT INSTALLATION
6-27/32
(174) 5-7/16 (138)
29-17/32 (750)
12-21/64
(313) 2-7/16 (62)
17-1/4
(438)
23/32 (18)
7/8 (22)
2-3/4
(70)
3-13/16
(97)
3-7/64 (79)
23-5/8 (600)
19/32 (15)
FOR RI*+T DO:N:ARD OR LEFT DO:N-
:ARD PIPIN*
TKH IoOOoZLQJ ¿JXrHLV DYLHZ oIWKH EoWWoPoI
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FOR LEFT PIPIN*FOR RI*+T PIPIN*
2-3/8
(60)
1-3/16
(30)
2-3/8
(60)
1-3/16
(30)
2-3/8
(60) 2-3/8 (60)
29-17/32 (750)
8-37/64
(218) 6-3/16 (157) 12-21/64 (313) 2-7/16 (62)
8-15/32
(215)
5-45/64
(145)
2-61/64
(75)
5-7/8
(150)
2-3/8
(60)
HOLE POSITIONS
¡ LQ¡ PP  - 9 LQ
 - PP
2-3. INDOOR UNIT PREPARATION
RHPoYH WKH IroQW SDQHO oIWKH LQGoor XQLW
 PXVK GoZQ WKH WDE oQWKH EoWK VLGHV oIWKH XQLW Wo oSHQ WKH IroQW SDQHO
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En-5
(0%('',1*7+(,1'22581,7,1$:$//
 0DNH DKoOH LQ WKH ZDOO
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 TLJKWHQ WKH VFrHZV VHFXrHO\
333
333
4
22-41/64 (575)
29-9/64 (740)
2-3/4
(
70
)
4
- 
,1'22581,7,167$//$7,21
,167$//,1*7+(,1'22581,7217+()/225
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02817,1*7+(,1'22581,7217+(:$//
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-

- 8
RHLQIorFHPHQW
PDWHrLDO
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WKH SLSHV DQG KoVH DrHroXWHG IroPWKH LQGoor XQLW TKH oYHrODS ZLGWK oIWKH
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FHOW WDSH 
SWDrWZrDSSLQJ WKH SLSLQJ WDSH * DroXQG
WKH SLSHV DQG KoVH  LQ  PP
LQVLGH WKH LQGoor XQLW
FDVWHQ WKH HQG oIWKH IHOW WDSH  ZLWK
DEDQGDJH VWoSSHr
0DNH VXrHWKDW WKH GrDLQ KoVH
LV QoWroXWHG XSZDrG
FOR LEFT OR LEFT-REAR PIPIN*
%XQGOH WKH FoQQHFWLQJ SLSHV DQG GrDLQ KoVH WoJHWKHrDQG WKHQ ZrDS WKHP LQ
IHOW WDSH 
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DV VKoZQ EHOoZ
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SDQHO
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RI*+T DO:N:ARD PIPIN*OT+ER PIPIN*
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PLSH FoYHr 
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2-5. PIPE FORMING AND INSTALLATION
Note: RHIHr Wo  FLARE &ONNE&TIONPIPE &ONNE&TION
Pipe Forming
RoXWH WKH GrDLQ KoVH GLDJoQDOO\ EHOoZWKH FoQQHFWLQJ SLSHV
0DNH VXrHWKDW WKH GrDLQ KoVH LV QoWroXWHG XSZDrGDQG WKDW WKHrHDrHQo
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Connecting Pipe Installation
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En-6
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ZLrHV
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INDOOR UNIT
THrPLQDO EOoFN
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Remark:
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2-6. CONNECTING WIRES FOR INDOOR UNIT
Note: :KHQ WKH LQGoor XQLW LV SoZHrHG IroPWKH oXWGoor XQLW GHSHQGLQJ oQOoFDO FoGH DGLVFoQQHFW VZLWFK QHHGV Wo EH LQVWDOOHG Wo DSoZHr VXSSO\ FLrFXLW
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2-7. DRAIN PIPING
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The Drain hose is removed at installation.
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En-7
 RHPoYH WKH SDQHO
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WARNING
Fix the connecting cable at the prescribed position securely.
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 &N
CONNECTING AN INTERFACE (option)/CONNECTOR CABLE (option) TO THE AIR CONDITIONER
TKLQ SDrWoIWKH FoQQHFWLQJ FDEOH
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FDQQoWWoXFK LW
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2-8. FRONT PANEL INSTALLATION
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FroQW SDQHO
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En-8
3-1. CONNECTING WIRES FOR OUTDOOR UNIT
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3. OUTDOOR UNIT INSTALLATION
Power supply cord (L)
L1 L2
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Power supply cord (L)
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3-2. PIPE FORMING AND INSTALLATION
Note: RHIHr Wo  FLARE &ONNE&TIONPIPE &ONNE&TION
3-3. INSULATION AND TAPING
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WARNING
When installing the unit, securely connect the refrigerant pipes before
starting the compressor.