Mitsubishi Electronics USA MSZ-FH18NA2 Installation guide

Brand: Mitsubishi Electronics USA

Model: MSZ-FH18NA2

Type: Installation guide

This manual is also suitable for

1. BEFORE INSTALLATION

1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY

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ENGLISH

Required Tools for Installation

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MSZ-FH06/09/12/15/18NA

MSZ-FH18NA2

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■ Do not install the unit by yourself (user).

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■ Follow the instructions detailed in the installation manual.

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■ When installing the unit, use appropriate protective equipment and tools for

safety.

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■ Install the unit securely in a place that can bear the weight of the unit.

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■ 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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■ Ground the unit correctly.

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■ Do not damage the wires.

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■ Be sure to shut off the main power when setting up the indoor P.C. board or

wiring.

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■ Do not use intermediate connection of the power cord or the extension cord.

Do not connect many devices to one AC outlet.

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■ 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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■ Securely attach the electrical cover to the indoor unit and the service panel to

the outdoor unit.

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■ When installing, relocating, or servicing the unit, make sure that no substance

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■ Do not discharge the refrigerant into the atmosphere. Check that the refriger-

ant gas does not leak after installation has been completed. If refrigerant leaks

during installation, ventilate the room.

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■ Use appropriate tools and piping materials for installation.

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■ When pumping down the refrigerant, stop the compressor before disconnecting

the refrigerant pipes.

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■ When installing the unit, securely connect the refrigerant pipes before starting

the compressor.

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■ 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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■ Perform the drainage/piping work securely according to the installation

manual.

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■ Do not install the outdoor unit where small animals may live.

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CAUTION

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WARNING

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INSTALLATION MANUAL

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1-3. SPECIFICATIONS

1-3-1. POWER SUPPLY AND INDOOR/OUTDOOR

WIRE CONNECTION

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Connecting wires and the ground wire

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)ROORZORFDOHOHFWULFDOFRGHV

Power supply cable and ground wire

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 )+ 0LQ$:*

 )+ 0LQ$:*

 8VHFRSSHUFRQGXFWRUVRQO\

 )ROORZORFDOHOHFWULFDOFRGHV

Note:

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LQJRQORFDOFRGHDGLVFRQQHFWVZLWFKQHHGVWREHLQVWDOOHGWRD

SRZHUVXSSO\FLUFXLW

 5HIULJHUDQWDGMXVWPHQW,ISLSHOHQJWKH[FHHGVIWP

DGGLWLRQDOUHIULJHUDQW5$FKDUJHLVUHTXLUHG

7KHRXWGRRUXQLWLVFKDUJHGZLWKUHIULJHUDQWIRUSLSHOHQJWKXS

WRIW>P@

 7KHXQLWKDVÀDUHG FRQQHFWLRQVRQ ERWKLQGRRU DQGRXWGRRU

VLGHV

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WKHSLSH

 5HIULJHUDQWSLSHVDUHXVHGWRFRQQHFWWKHLQGRRUDQGRXWGRRU

XQLWV

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1-3-2. REFRIGERANT PIPES

 7RSUHYHQWFRQGHQVDWLRQLQVXODWHWKHWZRUHIULJHUDQWSLSHV

 5HIULJHUDQW SLSH EHQGLQJ UDGLXV PXVW EH  LQ  PP RU

PRUH

CAUTION

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IRUP

1-2. SELECTING THE INSTALLATION LOCATION

INDOOR UNIT

 :KHUHDLUÀRZLVQRWEORFNHG



:KHUHFRRODLUVSUHDGVRYHUWKHHQWLUHURRP

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SRVHWRGLUHFWVXQOLJKWDOVRGXULQJWKHSHULRGIROORZLQJ

XQSDFNLQJWREHIRUHXVH

 :KHUHLWFDQEHHDVLO\GUDLQHG

 $WDGLVWDQFHIWPRUPRUHDZD\IURPD79DQG

UDGLR2SHUDWLRQRI WKHDLU FRQGLWLRQHUPD\LQWHUIHUH

ZLWKUDGLRRU79UHFHSWLRQ $Q DPSOLILHUPD\EHUH-

TXLUHGIRUWKHDIIHFWHGGHYLFH

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

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Note:

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WULEXWHRYHUWKHHQWLUHURRP

REMOTE CONTROLLER

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

:KHUHFKLOGUHQFDQQRWHDVLO\WRXFKLW

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&KHFNWKDWVLJQDOVIURPWKHUHPRWHFRQWUROOHUIURP

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ZLUHOHVVUHPRWHFRQWUROOHU

Note:

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WKHVLJQDOIURPWKHZLUHOHVVUHPRWHFRQWUROOHUPD\QRWEH

UHFHLYHG

OUTDOOR UNIT

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

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VRXQGRUKRWDLU

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LQFUHDVHRIRSHUDWLRQVRXQGRUYLEUDWLRQ

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DFDQRS\DSHGHVWDODQGRUEDIÀHERDUGV

Note:

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VRDVWRUHGXFHYLEUDWLRQ

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ORFDWLRQZKHUHFRQWLQXRXVGLUHFWVXQOLJKWRUH[FHVVLYH

ZDWHUFDQEHDYRLGHGDVPXFKDVSRVVLEOH

Note:

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SHUDWXUHEHVXUHWRIROORZWKHLQVWUXFWLRQVGHVFULEHG

EHORZ

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DEDIÀH

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

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ZKLFKPD\FDXVHFKHPLFDOFUDFNLQJ

1-4. INSTALLATION DIAGRAM

ACCESSORIES

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

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 $LUFOHDQLQJ¿OWHU 

FIELD-SUPPLIED PARTS

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2. INDOOR UNIT INSTALLATION

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2-2. DRILLING

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2-3. CONNECTING WIRES FOR INDOOR UNIT

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2-4-2. DRAIN PIPING

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$WOHDVW

LQ

PP

JDS

'RZQZDUG

VORSH

'UDLQ

KRVH

6RIWKRVH,'

LQ

PP

'UDLQKRVH

+DUGYLQ\OFKORULGHSLSH

,'LQ

PP

,QVHUW

VHFXUHO\

'LIIHUHQW

GLDPHWHUMRLQW

LQ

FP

RUPRUH

)LJ )LJ )LJ

/LTXLGSLSH

*DVSLSH

)HOWWDSH

,QGRRURXWGRRUXQLW

FRQQHFWLQJZLUH$

3LSLQJWDSH*

2-4. PIPE FORMING AND DRAIN PIPING

2-4-1. PIPE FORMING

 3ODFHWKHGUDLQKRVHEHORZWKHUHIULJHUDQWSLSLQJ

 0DNHVXUHWKDWWKHGUDLQKRVHLVQRWFURZGHGRUEHQW

 'RQRWSXOOWKHKRVHZKHQDSSO\LQJWKHWDSH

 :KHQ WKH GUDLQ KRVH SDVVHV WKH URRP EH VXUH WR ZUDS LW ZLWK LQVXODWLRQ PDWHULDO

¿HOGVXSSOLHG

Note:

0DNHVXUHQRWWRGDPDJHWKHFRYHURIUHIULJHUDQWSLSHZKHQDWWDFKLQJLWEDFNRQZLWK

VFUHZV

Left or left-rear piping

Note:

%HVXUHWRUHDWWDFKWKHGUDLQKRVHDQGWKHGUDLQFDSLIWKHSLSLQJLVEHLQJLQVWDOOHGRQ

OHIWRUERWWRPOHIWRIXQLWRWKHUZLVHZDWHUFRXOGGULSGRZQIURPWKHGUDLQKRVH

3ODFHWKHUHIULJHUDQWSLSLQJDQGWKHGUDLQKRVHWRJHWKHUWKHQ¿UPO\DSSO\IHOWWDSH

IURPWKHHQG

 )HOWWDSHRYHUODSZLGWKVKRXOGEHWKHWDSHZLGWK8VHDEDQGDJHVWRSSHUDW

WKHHQGRIIHOWWDSH

3XOORXWWKHGUDLQFDSDWWKHEDFNULJKWRIWKHLQGRRUXQLW)LJ

 +ROGWKHFRQYH[VHFWLRQDWWKHHQGDQGSXOOWKHGUDLQFDS

3XOORXWWKHGUDLQKRVHDWWKHEDFNOHIWRIWKHLQGRRUXQLW)LJ

 +ROGWKHFODZPDUNHGE\WKHDUURZVDQGSXOORXWWKHGUDLQKRVHIRUZDUG

3XWWKHGUDLQFDSLQWRWKHVHFWLRQWRZKLFKWKHGUDLQKRVHLVWREHDWWDFKHGDWWKHUHDU

RIWKHLQGRRUXQLW)LJ

 ,QVHUWDVFUHZGULYHULQWRWKHKROHRQWKHFDSDQGLQVHUWWKHFDSIXOO\LQWRWKHGUDLQ

SDQ

,QVHUWWKHGUDLQKRVHIXOO\LQWRWKHGUDLQSDQDWWKHEDFNULJKWRIWKHLQGRRUXQLW)LJ

 &KHFNLIWKHKRVHLVKRRNHGVHFXUHO\WRWKHSURMHFWLRQRILWVLQVHUWLQJSDUWDWWKH

GUDLQSDQ

,QVHUW WKH GUDLQ KRVHLQWR ZDOO KROHVOHHYH &DQG DWWDFK WKHXSSHU SDUW RI LQGRRU

XQLWRQWRWKHLQVWDOODWLRQSODWH7KHQVKLIWWKHLQGRRUXQLWFRPSOHWHO\WRWKHOHIWWR

PDNHSODFLQJWKHSLSLQJLQWKHEDFNRIWKHXQLWHDVLHU

&XWRXWDSLHFHRIFDUGERDUGIURPWKHVKLSSLQJER[UROOLWXSKRRNLWRQWRWKHEDFN

ULEDQGXVHLWDVDVSDFHUWROLIWWKHLQGRRUXQLW)LJ

&RQQHFWWKHUHIULJHUDQWSLSLQJZLWKWKHH[WHQVLRQSLSH%

$WWDFKWKHORZHUSDUWRIWKHLQGRRUXQLWLQWRWKHLQVWDOODWLRQSODWH

5HPRYHSDQHOIRUSLSLQJ

RQOHIWVLGHRIXQLW

'UDLQFDS

'UDLQKRVH

'UDLQFDS

'UDLQKRVH

)LJ )LJ

)LJ

)LJ

)LJ

3LSLQJWDSH*

)HOWWDSH

Rear or bottom piping

3ODFHWKHUHIULJHUDQWSLSLQJDQGWKHGUDLQKRVHWRJHWKHUWKHQ¿UPO\DSSO\SLSLQJWDSH

*IURPWKHHQG

,QVHUWWKHSLSLQJDQGWKHGUDLQKRVHLQWRWKHZDOOKROHVOHHYH&DQGDWWDFKWKHXS-

SHUSDUWRIWKHLQGRRUXQLWRQWKHLQVWDOODWLRQSODWH

&KHFNLI WKHLQGRRUXQLW LVDWWDFKHGVHFXUHO\ RQWKHLQVWDOODWLRQ SODWH E\ PRYLQJ

WKHXQLWWROHIWDQGULJKW

$WWDFKWKHORZHUSDUWRIWKHLQGRRUXQLWLQWRWKHLQVWDOODWLRQSODWH

Right piping

Note:

%HIRUHSHUIRUPLQJWKHIROORZLQJPDNHVXUHWKDWZLULQJLVFRPSOHWHGDQGWKHFRQGXLW

FRYHULVLQVWDOOHG5HIHUWR

3ODFHWKHUHIULJHUDQWSLSLQJDQGWKHGUDLQKRVHWRJHWKHUVKLIWWKHPWROHIWVLGHRIWKH

XQLWDQGWKHQ¿UPO\DSSO\SLSLQJWDSH*IURPWKHHQG

,QVHUWWKHSLSLQJDQGWKHGUDLQKRVHLQWRWKHZDOOKROHVOHHYH&DQGDWWDFKWKHXS-

SHUSDUWRIWKHLQGRRUXQLWRQWKHLQVWDOODWLRQSODWH

&KHFNLI WKHLQGRRUXQLW LVDWWDFKHGVHFXUHO\ RQWKHLQVWDOODWLRQ SODWH E\ PRYLQJ

WKHXQLWWROHIWDQGULJKW

$WWDFKWKHORZHUSDUWRIWKHLQGRRUXQLWLQWRWKHLQVWDOODWLRQSODWH

7RWKHOHIW

5HPRYHFRUQHU

ER[IRUSLSLQJ

RQULJKWVLGHRI

XQLW

5HPRYHFRUQHUER[IRUSLSLQJ

RQERWWRPVLGHRIXQLW

3-1. CONNECTING WIRES FOR OUTDOOR UNIT

5HPRYHWKHVHUYLFHSDQHO

5HPRYHWKHFRQGXLWFRYHU

$WWDFKWKH FRQGXLW FRQQHFWRUV WR WKHFRQGXLW SODWHZLWK ORFNQXWV WKHQVHFXUH LWDJDLQVW XQLW

ZLWKVFUHZV

&RQQHFWWKHJURXQGZLUHVRILQGRRURXWGRRUXQLWFRQQHFWLQJZLUH$DQGSRZHUVXSSO\FRUG.

WRWKH7%VXSSRUW

/RRVHQ WKHWHUPLQDO VFUHZV WKHQ DWWDFKLQGRRURXWGRRU XQLW FRQQHFWLQJ ZLUH$ DQG SRZHU

VXSSO\ FRUG . IURP WKH LQGRRU XQLW FRUUHFWO\ WR WKH WHUPLQDO EORFN $WWDFK WKH ZLUHV WR WKH

WHUPLQDOEORFN VHFXUHO\ VRWKDW WKHFRUHV FDQQRW EHVHHQ DQG QRH[WHUQDO IRUFH DIIHFWVWKH

FRQQHFWLQJVHFWLRQRIWKHWHUPLQDOEORFN

)LUPO\WLJKWHQWKHWHUPLQDOVFUHZV$IWHUWLJKWHQLQJYHULI\WKDWWKHZLUHVDUHWLJKWO\IDVWHQHG

,QVWDOOWKHFRQGXLWFRYHU

,QVWDOOWKHVHUYLFHSDQHOVHFXUHO\

3-2. FLARE CONNECTION

&XWWKHFRSSHUSLSHDVVWUDLJKWDVSRVVLEOHZLWKDSLSHFXWWHU)LJ

5HPRYH DOO EXUUV IURP WKH FXW VHFWLRQ RI WKH SLSH HQVXULQJ WKDW SUHFDXWLRQV DUHWDNHQ WR

DYRLGJHWWLQJPHWDOVKDYLQJVLQWRWKHSLSLQJ)LJ

5HPRYHÀDUHQXWVDWWDFKHGWRLQGRRUDQGRXWGRRUXQLWVWKHQSXWWKHPRQSLSH

)ODULQJZRUN)LJ)LUPO\KROGFRSSHUSLSHLQWKHGLPHQVLRQVKRZQLQWKHWDEOH6HOHFW$

LQFKPPIURPWKHWDEOHDFFRUGLQJWRWKHWRRO\RXXVH

&KHFN

 &RPSDUHWKHÀDUHGZRUNZLWK)LJ

 ,IÀDUHLVGHIHFWLYHFXWRIIWKHVHFWLRQDQGUHSHDWSURFHGXUH

7HUPLQDOEORFN

3. OUTDOOR UNIT INSTALLATION

Power supply cord (K)

,QGRRURXWGRRUXQLW

FRQQHFWLQJZLUH$

 0DNH JURXQG ZLUH D OLWWOH ORQJHU WKDQ RWK-

HUV0RUHWKDQLQ>PP@

 )RU IXWXUHVHUYLFLQJ OHDYH VRPHVODFN LQ

WKHFRQQHFWLQJZLUHV

 %HVXUH WR DWWDFK HDFK VFUHZWR LWV FRUUH-

VSRQGHQWWHUPLQDOZKHQ VHFXULQJWKHFRUG

DQGRUWKHZLUHWRWKHWHUPLQDOEORFN

3LSHGLDPHWHU

LQFKPP

%

LQFK

PP

$LQFKPP 7LJKWHQLQJWRUTXH

&OXWFK

W\SHWRRO

IRU5$

&OXWFK

W\SHWRRO

IRU5

:LQJQXW

W\SHWRRO

IRU5

IWOE

NJIFP

1P

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

WR

WR

WR



WR



WR



WR



WR

WR

WR

¡





WR

WR

WR

¡





WR



WR



WR

WR

WR

¡





WR

WR

WR

Power supply cord (K)

6HUYLFHSDQHO

/RFNQXW

&RQGXLWFRYHU

&RQGXLWSODWH

&RQGXLWSLSH

*URXQGLQJ

WHUPLQDO

&RSSHU

SLSH

*RRG

90°

7LOWHG

1RJRRG

)LJ )LJ

%XUU

&RSSHUSLSH

6SDUHUHDPHU

3LSHFXWWHU

)LJ

)LJ

6PRRWKDOODURXQG

(YHQOHQJWK

DOODURXQG

,QVLGHLVVKLQ-

LQJZLWKRXWDQ\

VFUDWFKHV

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)LJ

&OXWFKW\SH

)ODULQJWRRO

:LQJQXWW\SH

8QHYHQ %XUUHG

7%VXSSRUW

7HUPLQDOEORFN

WRFRQGXLWFRYHU

Power supply cord (K)

,QGRRURXWGRRUXQLW

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7%VXSSRUW

*URXQGLQJ

WHUPLQDO

6HUYLFHSDQHO

/RFNQXW

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&RQGXLW

SODWH

&RQGXLWSLSH

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'LH

&RSSHUSLSH

WRFRQGXLWFRYHU

/HDG

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3-3. PIPE CONNECTION

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UHVXOWLQEXUQVRUIURVWELWH

Indoor unit connection

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 $SSO\DWKLQFRDWRIUHIULJHUDWLRQRLO-RQWKHÀDUHGHQGVRIWKHSLSHV'RQRWDSSO\UH-

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VFUHZ

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XVLQJWZRZUHQFKHV([FHVVLYHWLJKWHQLQJGDPDJHVWKHÀDUHVHFWLRQ

Outdoor unit connection

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 )RUWLJKWHQLQJXVHDWRUTXHZUHQFKRUVSDQQHU

4-1. PURGING PROCEDURES AND LEAK TEST



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YDOYHVDUHIXOO\FORVHGZKHQVKLSSHG/HDYHFORVHG

&RQQHFWJDXJHPDQLIROGWRSRUWVRIVWRSYDOYHV

4-5. EXPLANATION TO THE USER

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6WRSYDOYHIRU

*$6

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6\VWHPVKRXOGKROGPLFURQVIRUDPLQLPXPRIKRXU

)XOO\RSHQDOOVWRSYDOYHVRQERWKVLGHVRIJDVSLSHDQGOLTXLGSLSH2SHUDWLQJZLWKRXW

IXOO\RSHQLQJORZHUVWKHSHUIRUPDQFHDQGWKLVFDXVHVWURXEOH

5HIHUWR  DQGFKDUJH WKHSUHVFULEHG DPRXQW RIDGGLWLRQDO UHIULJHUDQWLI QHHGHG%H

VXUHWRFKDUJHVORZO\ZLWKOLTXLGUHIULJHUDQW2WKHUZLVHFRPSRVLWLRQRIWKHUHIULJHUDQWLQ

WKHV\VWHPPD\EHFKDQJHGDQGDIIHFWSHUIRUPDQFHRIWKHDLUFRQGLWLRQHU

5HPRYHJDXJHPDQLIROGVDQGUHSODFHVHUYLFHSRUWFDSVDQGWLJKWHQ

/HDNWHVW

4-2. TEST RUN

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EUHDNHU

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WLRQ7HVW UXQZLOO EHSHUIRUPHG IRU PLQXWHV ,IWKH OHIWODPS

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LQGRRURXWGRRUXQLWFRQQHFWLQJZLUH $ IRUPLVZLULQJ$IWHUWKH

WHVWUXQ HPHUJHQF\PRGH VHWWHPSHUDWXUH )>&@ ZLOO

VWDUW

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6WRSYDOYHIRU/,48,'

4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN

3UHVVXUHJDXJH

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Checking the remote (infrared) signal reception

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 2QFHWKHFRPSUHVVRUVWRSVWKHUHVWDUWSUHYHQWLYHGHYLFHRSHUDWHVVRWKHFRPSUHVVRU

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4-3. AUTO RESTART FUNCTION

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WKHSUHYLRXVVHWWLQJRQFHWKHSRZHUVXSSO\LVUHVXPHG5HIHUWRWKHRSHUDWLQJLQVWUXFWLRQV

IRUGHWDLOV

Caution:

 $IWHUWHVWUXQRUUHPRWHVLJQDOUHFHSWLRQFKHFNWXUQRIIWKHXQLWZLWKWKH(26:RU

WKHUHPRWHFRQWUROOHUEHIRUHWXUQLQJRIIWKHSRZHUVXSSO\,IWKLVSURFHGXUHLVQRWSHU-

IRUPHGWKHXQLWZLOODXWRPDWLFDOO\EHJLQRSHUDWLRQZKHQSRZHUVXSSO\LVUHVXPHG

To the user

 $IWHULQVWDOOLQJWKHXQLWH[SODLQWRWKHXVHUDERXWDXWRUHVWDUWIXQFWLRQ

 ,IDXWRUHVWDUWIXQFWLRQLVXQQHFHVVDU\LWFDQEHGHDFWLYDWHG&RQVXOWWKHVHUYLFHUHS-

UHVHQWDWLYHWRGHDFWLYDWHWKHIXQFWLRQ5HIHUWRWKHVHUYLFHPDQXDOIRUGHWDLOV

3-4. INSULATION AND TAPING

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)RURXWGRRUXQLWVLGHLQVXODWHWKHSLSLQJLQFOXGLQJYDOYHV

$SSO\SLSLQJWDSH*VWDUWLQJIURPWKHFRQQHFWLRQRQWKHRXWGRRUXQLW

 :KHQSLSLQJKDVWREHLQVWDOOHGWKURXJKDFHLOLQJFORVHWRUZKHUHWKHWHPSHUDWXUHDQG

KXPLGLW\DUHKLJKXVHDGGLWLRQDO¿HOGVXSSOLHGLQVXODWLRQWRSUHYHQWFRQGHQVDWLRQ

WARNING

When installing the unit, securely connect the refrigerant pipes before starting the

compressor.

4-4. SETTING THE INSTALLATION POSITION

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XQLW

Installation position:

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&HQWHU'LVWDQFHWRREMHFWVZDOOFDELQHWHWFLV

PRUHWKDQLQFPWRWKHOHIWDQGULJKW

5LJKW'LVWDQFHWRREMHFWVZDOOFDELQHWHWFLVOHVV

WKDQLQFPWRWKHULJKW

/HIW &HQWHU5LJKW

Note:

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 7KHUHPRWHFRQWUROOHULVSRZHUHGRII

 :HHNO\WLPHULVQRWVHW

 :HHNO\WLPHULVQRWEHLQJHGLWHG

+ROG GRZQ  RQ WKH UHPRWH FRQWUROOHU IRU  VHFRQGV WR HQWHU WKH SRVLWLRQ VHWWLQJ

PRGH

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(DFKSUHVVRIWKH GLV-

SOD\VWKHSRVLWLRQVLQRUGHUFHQWHUĺULJKWĺOHIW

3UHVV

WRFRPSOHWHWKHSRVLWLRQVHWWLQJ

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5HPRWHFRQWUROOHU

GLVSOD\

(PHUJHQF\

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VZLWFK

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5-3. PUMPING DOWN

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5. RELOCATION AND MAINTENANCE

5-1. REMOVING AND INSTALLING THE PANEL

ASSEMBLY

Removal procedure

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5-2. REMOVING THE INDOOR UNIT

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Installation procedure

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72.<2-$3$1

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WARNING

When pumping down the refrigerant, stop the compressor before disconnecting

the refrigerant pipes. The compressor may burst if air etc. get into it.

Mitsubishi Electronics USA MSZ-FH18NA2 Installation guide

Brand: Mitsubishi Electronics USA

Model: MSZ-FH18NA2

Type: Installation guide

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Mitsubishi Electronics USA MSZ-FH18NA2 Installation guide

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Mitsubishi Electronics USA MSZ-FH18NA2 Installation guide

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