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Required Tools for Installation

Phillips screwdriver
Level
Scale
Utility knife or scissors
65 mm hole saw
Torque wrench
Wrench (or spanner)

4 mm hexagonal wrench
Flare tool for R32, R410A
Gauge manifold for R32, R410A
Vacuum pump for R32, R410A
Charge hose for R32, R410A
Pipe cutter with reamer

1. BEFORE INSTALLATION

MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT

WARNING

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

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 WARNING

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  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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 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.

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  Do not alter the unit.

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■ 

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experienced electrician, according to the installation 

manual. Be sure to use an exclusive circuit. Do not 

connect other electrical appliances to the circuit.

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  Earth the unit correctly.

  Do not connect the earth to a gas pipe, water pipe, light-

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■ 

Do not damage the wires by applying excessive pres-

sure with parts or screws.

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up the indoor P.C. board or wiring works.

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the terminal block connecting sections so the stress 

of the wires is not applied to the sections. Do not 

extend the wires, or use intermediate connection.

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■ 

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may leak.

  If gas leaks and accumulates in the area around the unit, 

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 Do not use intermediate connection of the power 

cord or the extension cord and do not connect many 

devices to one AC outlet.

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for the installation work.

  The use of defective parts could cause an injury or leakage 

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HWF

■ 

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 sup-

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If loose parts are found on the power supply plug, replace 

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■ 

Attach the electrical cover to the indoor unit and the 

service panel to the outdoor unit securely.

  If the electrical cover of the indoor unit and/or the service 

panel of the outdoor unit are not attached securely, it could 

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■ 

When installing, relocating, or servicing the unit, 

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refrigerant (R32) enters the refrigerant circuit.

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could lead to a serious impediment to securing product 

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Do not discharge the refrigerant into the atmosphere. 

If refrigerant leaks during installation, ventilate the 

room. Check that the refrigerant does not leak after 

installation has been completed.

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-

ing part of such a fan heater, kerosene heater, or cooking 

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Use appropriate tools and piping materials for instal-

lation.

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appropriate tools or materials and incomplete installation 

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■ 

When pumping down the refrigerant, stop the com-

pressor before disconnecting the refrigerant pipes.

  If the refrigerant pipes are disconnected while the com-

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drawn in and the pressure in the refrigeration cycle could 

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■ 

When installing the unit, securely connect the refriger-

ant pipes before starting the compressor.

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drawn in and the pressure in the refrigeration cycle could 

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■ 

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in this manual.

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■ 

The unit shall be installed in accordance with national 

wiring regulations.

■ 

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equipment, completely remove all of the refrigerant 

from the air conditioner and ensure that the area is 

well-ventilated.

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heating part, it will create harmful gas and there is risk of 

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■ 

Do not use means to accelerate the defrosting process 

or to clean, other than those recommended by the 

manufacturer.

■ 

The appliance shall be stored in a room without 

continuously operating ignition sources (for exam-

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operating electric heater).

■ 

Do not pierce or burn.

■ 

Be aware that refrigerants may not contain an odour.

■ 

Pipe-work shall be protected from physical damage.

■ 

The installation of pipe-work shall be kept to a mini-

mum.

■ 

Compliance with national gas regulations shall be 

observed.

■ 

Keep any required ventilation openings clear of ob-

struction.

  Do not install the indoor unit equipped with the Wi-Fi 

interface nearby the automatic control devices such 

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 Do not use the indoor unit equipped with the Wi-Fi 

interface nearby the medical electrical equipment or 

people who have a medical device such as a cardiac 

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-

tor.

  It can cause an accident due to malfunctions of the medical 

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 This indoor unit equipped with the Wi-Fi interface 

should be installed and operated with a minimum 

distance of 20 cm between the device and the user 

or bystanders.

■ 

In Australia, only technicians that possess the appro-

priate license issued by the Australian Refrigeration 

Council (ARC) should install this product.

Appropriate personal protective equipment
The installer should ensure they check the respective Work Health 
and Safety (WHS) Act within their jurisdiction as the requirements and 

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9*<+

ENGLISH

REFRIGERANT

SPLIT-TYPE AIR CONDITIONERS

INSTALLATION MANUAL

Model names are indicated in 1-3.

When installing multi units, refer to the 
installation manual of the multi unit for 

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Summary of Contents for MSZ-LN25VG2

Page 1: ...RXWOHW LW FRXOG FDXVH HOHFWULF VKRFN RU UH If loose parts are found on the power supply plug replace LW Attach the electrical cover to the indoor unit and the service panel to the outdoor unit securely If the electrical cover of the indoor unit and or the service panel of the outdoor unit are not attached securely it could UHVXOW LQ D UH RU DQ HOHFWULF VKRFN GXH WR GXVW ZDWHU HWF When installing r...

Page 2: ...LQ RU GLUHFW VXQOLJKW FDQ EH DYRLGHG DV PXFK DV SRVVLEOH KHUH QHLJKERXUV DUH QRW DQQR HG E RSHUDWLRQ VRXQG RU KRW RU FRRO DLU 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 DW D KLJK OHYHO EH VXUH WR VHFXUH WKH XQLW OHJV KHUH LW LV DW OHDVW P DZD IURP WKH DQWHQQD RI 79 VHW RU U...

Page 3: ...anufacturing year and month LV LQGLFDWHG RQ WKH VSHF QDPH SODWH 60 mm or more 150 mm or more for left left rear piping using spacer 101 mm or more 111 mm or more 350 mm or more Note QVWDOO WKH XQLW KRUL RQWDOO R QRW XVH GUDLQ VRFNHW LQ FROG UHJLRQV UDLQ PD IUHH H DQG PDNH WKH IDQ VWRS 7KH RXWGRRU XQLW SURGXFHV FRQGHQVDWH GXULQJ WKH KHDWLQJ RSHUDWLRQ 6HOHFW the installation place to ensure to preve...

Page 4: ... GUDLQ SLSLQJ DV VKRZQ EHORZ Do not raise Accumulated drain water Air Waving Water leakage Water leakage Water leakage Tip of drain hose dipped in water Ditch At least 50 mm gap Downward slope Drain hose Soft hose PP Drain hose Hard vinyl chloride SLSH PP Insert securely LႇHUHQW diameter joint 70 cm or more LJ LJ LJ For future servicing give extra length to WKH FRQQHFWLQJ ZLUHV 0DNH HDUWK ZLUH D O...

Page 5: ...0RYH SDUW DERXW GHJUHHV DURXQG WKH KLQJH SRLQW RX KDYH MXVW FUHDWHG WR SXW WKH SDUWV WRJHWKHU 3UHVV WKH EDVH RI SRUWLRQ ZLWK WKH PDUN WR VQDS LQWR SODFH KHQ FKDQJLQJ WKH SDUW GLVDVVHPEOH E PRYLQJ WKH SDUW LQ D UHYHUVH GLUHFWLRQ 7KH SDUWV WKDW ZHUH QRW XVHG PD EH QHFHVVDU LQ WKH IXWXUH LI WKH DLU FRQGLWLRQHU LV UHORFDWHG VR DVN FXVWRPHUV WR NHHS WKRVH SDUWV WWDFK WKH DVVHPEOHG FRUQHU ER WR WKH LQGR...

Page 6: ...compressor 3 1 CONNECTING WIRES FOR OUTDOOR UNIT 2SHQ WKH VHUYLFH SDQHO 2 Loosen terminal screw and connect indoor outdoor unit connecting wire A from the 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 W...

Page 7: ...WLRQ DXWRPDWLFDOO ZKHQ SRZHU VXSSO LV UHVXPHG To the user IWHU LQVWDOOLQJ WKH XQLW PDNH VXUH WR H SODLQ WKH XVHU DERXW DXWR UHVWDUW IXQFWLRQ I DXWR UHVWDUW IXQFWLRQ LV XQQHFHVVDU LW FDQ EH GHDFWLYDWHG RQVXOW WKH VHUYLFH UHSUHVHQWDWLYH WR GHDFWLYDWH WKH IXQFWLRQ 5HIHU WR WKH VHUYLFH PDQXDO IRU GHWDLOV 4 PURGING PROCEDURES LEAK TEST AND TEST RUN Pressure gauge for R32 R410A Emergency operation VZLWF...

Page 8: ...3U Rႇ WKH ULJKW DQG OHIW DUP KROGHUV E PRYLQJ WKH VFUHZGULYHU GRZQ DQG WRZDUGV WKH EDFN ZDOO 5HPRYH WKH VDIHW VWULQJ IURP WKH XSSHU FHQWHU RI WKH SDQHO DVVHPEO Installation procedure QVWDOO WKH SDQHO DVVHPEO IROORZLQJ WKH UHPRYDO SURFHGXUH LQ UHYHUVH H VXUH WR SUHVV WKH SRVLWLRQV DV LQGLFDWHG E WKH DUURZV LQ RUGHU WR DWWDFK WKH DVVHPEO FRPSOHWHO WR WKH XQLW 2 3 1 Hold the panel with your hand whil...

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