LG MS12SQ NB0 User manual

P/NO : MFL67855410

INSTALLATION MANUAL

AIR

CONDITIONER

www.lg.com

Please read this installation manual completely before installing the product.

Installation work must be performed in accordance with the national wiring

standards by authorized personnel only.

Please retain this installation manual for future reference after reading it thoroughly.

This product contains Fluorinated Greenhouse Gases. (R410A)

[

Representative

]

LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V.

Krijgsman 1, 1186 DM Amstelveen, The Netherlands

[

Manufacturer

]

LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si,

Gyeongsangnam-do, KOREA

For more information, Refer to the CD or LG Web site (www.lg.com).

WALL MOUNTED

Original instruction

ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH

ΕΛΛΗΝΙΚΆ

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

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IMPORTANT SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

Always comply with the following precautions to avoid danger-

ous situations and ensure peak performance of your product

WARNING

It can result in serious injury or death when the directions are ig-

nored

CAUTION

It can result in minor injury or product damage when the direc-

tions are ignored

WARNING

• Installation or repairs made by unqualified persons can result

in hazards to you and others.

• Installation MUST conform with local building codes.

• The information contained in the manual is intended for use

by a qualified service technician familiar with safety proce-

dures and equipped with the proper tools and test instru-

ments.

• Failure to carefully read and follow all instructions in this man-

ual can result in equipment malfunction, property damage,

personal injury and/or death.

Installation

• Don’t use a power cord, a plug or a loose socket which is

damaged.

- Otherwise, it may cause a fire or electrical shock.

2IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

IMPORTANT SAFETY INSTRUCTIONS 3

ENGLISH

• For electrical work, contact the dealer, seller, a qualified elec-

trician, or an Authorized Service Center.

- Do not disassemble or repair the product. There is risk of fire

or electric shock.

• Always ground the product.

- There is risk of fire or electric shock.

• Install the panel and the cover of control box securely.

- There is risk of fire or electric shock.

• Always install a dedicated circuit and breaker.

- Improper wiring or installation may cause fire or electric

shock.

• Use the correctly rated breaker or fuse.

- There is risk of fire or electric shock.

• Do not modify or extend the power cable.

- There is risk of fire or electric shock.

• Do not let the air conditioner run for a long time when the hu-

midity is very high and a door or a window is left open.

- Moisture may condense and wet or damage furniture.

• Be cautious when unpacking and installing the product.

- Sharp edges could cause injury. Be especially careful of the

case edges and the fins on the condenser and evaporator.

• For installation, always contact the dealer or an Authorized

Service Center.

- There is risk of fire, electric shock, explosion, or injury.

• Do not install the product on a defective installation stand.

- It may cause injury, accident, or damage to the product.

• Be sure the installation area does not deteriorate with age.

If the base collapses, the air conditioner could fall with it,

causing property damage, product failure, and personal injury.

4IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

• There is a risk of fire and explosion.

- Inert gas (nitrogen) should be used when you check plumb-

ing leaks, cleaning or repairs of pipes etc. If you are using

combustible gases including oxygen, product may have the

risk of fires and explosions.

• Use a vacuum pump or Inert (nitrogen) gas when doing leak-

age test or air purge. Do not compress air or Oxygen and Do

not use Flammable gases. Otherwise, it may cause fire or ex-

plosion.

- There is the risk of death, injury, fire or explosion.

Operation

• Do not store or use flammable gas or combustibles near the

product.

- There is risk of fire or failure of product.

CAUTION

Installation

• Always check for gas (refrigerant) leakage after installation or

repair of product.

- Low refrigerant levels may cause failure of product.

• Install the drain hose to ensure that water is drained away

properly.

- A bad connection may cause water leakage.

• Keep level even when installing the product.

- To avoid vibration or water leakage.

• Do not install the product where the noise or hot air from the

outdoor unit could damage the neighborhoods.

- It may cause a problem for your neighbors.

IMPORTANT SAFETY INSTRUCTIONS 5

ENGLISH

• Use two or more people to lift and transport the product.

- Avoid personal injury.

• Do not install the product where it will be exposed to sea

wind (salt spray) directly.

- It may cause corrosion on the product. Corrosion, particularly

on the condenser and evaporator fins, could cause product

malfunction or inefficient operation.

• Thickness of copper pipes used are as shown “Flaring work”

Table.

- Never use copper pipes thinner than that in the table even

when it is available on the market

• Do not use copper pipes having a collapsed.

- Otherwise, the expansion valve or capillary tube may be-

come blocked with contaminants.

• For R410A model, use piping, flare nut and tools which is

specified for R410A refrigerant.

- Using of (R22) piping, flare nut and tools may cause abnor-

mally high pressure in the refrigerant cycle (piping), and pos-

sibly result in explosion and injury.

• It is desirable that the amount of residual oil less than 40

mg/10m.

2IMPORTANT SAFETY IN-
STRUCTIONS
7INSTALLATION PARTS
7INSTALLATION TOOLS
8INSTALLATION MAP
9INSTALLATION
9Select the best Location 
9Fixing Installation Plate
10 Drill a Hole in the Wall
10 Flaring Work
11 Connecting the Piping
15 Checking the Drainage
16 Installation of ﬁlters
16 Test Running
TABLE OF CONTENTS
6TABLE OF CONTENTS
ENGLISH

INSTALLATION PARTS 7

ENGLISH

INSTALLATION TOOLS

Name Quantity Shape

Installation plate 1 EA

Type "A" screw

5 EA

Type "B" screw

2 EA

Type "C" screw

2 EA

Remote control

holder

1 EA

The feature can be changed according to type of model.

Screws for fixing panels are attached to decoration panel.

Figure FigureName

Screw driver

Electric drill

Measuring tape, Knife

Hole core drill

Spanner

Torque wrench

Multi-meter

Hexagonal wrench

Ammeter

Gas-leak detector

Thermometer,

Level

Flaring tool set

Name

INSTALLATION PARTS

INSTALLATION MAP

Connecting cable

(Optional Parts)

Vinyl tape (Wide)

• Apply after carrying out a

drainage test.

• To carry out the drainage

test, remove the air ﬁlters

and pour water into the heat

exchanger.

Saddle

Gas side piping (Optional Parts)

Liquid side piping (Optional Parts)

Additional drain pipe

Vinyl tape (Narrow)

Drain Hose

Installation plate

Sleeve

Bushing-Sleeve

Putty(Gum Type Sealant)

Bend the pipe as closely

on the wall as possible,

but be careful that it

doesn't break.

NOTE

• You should purchase the installation parts.

* The feature can be changed according to type of model.

8INSTALLATION MAP

ENGLISH

INSTALLATION 9

ENGLISH

Select the best Location

- There should not be any heat or steam near

the unit.

- Select a place where there are no obstacles

around of the unit.

- Make sure that condensation drainage can

be conveniently routed away.

- Do not install near a doorway.

- Ensure that the interval between a wall and

the left (or right) of the unit is more than

100mm. The unit should be installed as high

as possible on the wall, allowing a minimum

of 200mm from ceiling.

- Use a metal detector to locate studs to pre-

vent unnecessary damage to the wall.

* The feature can be changed according to

type of model.

Fixing Installation Plate

The wall you select should be strong and solid

enough to prevent vibration

1Mount the installation plate on the wall

with type "A" screws. If mounting the unit

on a concrete wall, use anchor bolts.

- Mount the installation plate horizontally

by aligning the centerline using Horizontal

meter .

2Measure the wall and mark the centerline.

It is also important to use caution concern-

ing the location of the installation plate.

Routing of the wiring to power outlets is

through the walls typically. Drilling the hole

through the wall for piping connections

must be done safely.

More than 200

More than

100

More than 2300

More than

100

(Unit : mm)

CAUTION

Install the indoor unit on the wall where

the height from the floor is more than

2300mm.

Installation Plate

Chassis

Hook

Type "A" Screws

Ø65

133 95

Right rear piping

Left rear piping

Installation Plate

Place a level on raised tab

Unit Outline

217

175

(Unit : mm)

442 442

Ø65Ø65Ø65

INSTALLATION

Drill a Hole in the Wall

- Drill the piping hole with a ø65mm hole core

drill. Drill the piping hole at either the right or

the left with the hole slightly slanted to the

outdoor side.

Flaring Work

Main cause for gas leakage is due to defect of

flaring work. Carry out correct flaring work in

the following procedure.

Cut the pipes and the cable

1Use the piping kit accessory or the pipes

purchased locally.

2Measure the distance between the indoor

and the outdoor unit.

3Cut the pipes a little longer than measured

distance.

4Cut the cable 1.5m longer than the pipe

length.

Burrs removal

1. Completely remove all burrs from the cut

cross section of pipe/tube.

2. While removing burrs put the end of the

copper tube/pipe in a downward direction

while removing burrs location is also

changed in order to avoid dropping burrs

into the tubing.

Putting nut on

- Remove flare nuts attached to indoor and

outdoor unit, then put them on pipe/tube

having completed burr removal.

(not possible to put them on after finishing

flare work)

Flaring work

1Firmly hold copper pipe in a bar with the di-

mension shown in below table table

below.

2Carry out flaring work with the flaring tool.

5-7mm

(3/16"~5/16")

Indoor

WALL

Outdoor

Copper

pipe

90°

Slanted Uneven Rough

Pipe

Reamer

Point down

Flare nut

Copper tube

Outside diameter A Thickness

mm inch mm mm

Ø6.35 1/4" 1.1~1.3 0.7

Ø9.52 3/8" 1.5~1.7 0.8

Ø12.7 1/2" 1.6~1.8 0.8

Ø15.88 5/8" 1.6~1.8 1.0

Ø19.05 3/4" 1.9~2.1 1.0

10 INSTALLATION

ENGLISH

Table of contents

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