LG Multi-Type User manual

LG Multi Type

Air Conditioner

(Ceiling Duct Type)

INSTALLATION MANUAL

IMPORTANT

• Please read this installation manual completely before

installing the product.

• When the power cord is damaged, replacement work shall

be performed by authorized personnel only.

• 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.

website http://www.lgservice.com

e-mail http://lgservice.com/techsup.html

2Multi Type Air Conditioner

Multi Type Air Conditioner Installation Manual

TABLE OF CONTENTS

Safety Precautions..............3

Introduction .........................6

Installation of Indoor...........7

Connecting Pipes to the

Indoor Unit.........................12

Connecting Pipes to the ..14

Checking the Drainage .....14

Connecting Cables

between Indoor Unit .........15

Group Control....................17

Two Thermistor system....17

E.S.P.(External Static

Pressure) Setting...............18

How to Set E.S.P? .............19

Installation

Requirements Required Parts Required Tools

•

Four Type “A” screws

•

Connecting cable

•

Level

•

Screw driver

•

Electric drill

•

Hole core drill (ø70mm)

•

Pipes: Gas side...........1/2", 3/8"

Liquid side...........................1/4"

•

Insulated drain hose

•

Insulation materials

•

Flaring Tools set

•

Additional Drain hose

(Inner Dia...............25mm)

•

Screw driver

•

Hexagonal Wrench (4mm/5mm)

•

Gas-leak Detector

Safety Precautions

Installation Manual 3

To prevent injury to the user or other people and property damage, the following instructions must be

followed.

■Be sure to read before installing the air conditioner.

■Be sure to observe the cautions specified here as they include important items related to safety.

■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is

classified by the following indications.

■Meanings of symbols used in this manual are as shown below.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

■Installation

Be sure not to do.

Be sure to follow the instruction.

Safety Precautions

Do not use a defective or

underrated circuit breaker.

Use this appliance on a

dedicated circuit.

• There is risk of fire or electric

shock.

For electrical work, contact

the dealer, seller, a

qualified electrician, 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.

Safety Precautions

■Operation

4Multi Type Air Conditioner

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 humidity 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.

Do not store or use flammable gas or combustibles near the product.

• There is risk of fire or failure of product.

Gasolin

Installation Manual 5

Safety Precautions

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.

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.

90˚

■Installation

6Multi Type Air Conditioner

Introduction

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that could cause harm to the

air conditioner.

This symbol indicates special notes.

NOTICE

Introduction

Symbols Used in this Manual

Features

Air filters

Air intake vents

Remote Controller

Air outlet vents

more than

10cm

Installation Manual 7

Installation of Indoor

Selection of the best location

1) Indoor unit

Select location

Install the air conditioner in the location that

satisfies the following conditions.

•The place shall easily bear a load exceeding

four times the indoor unit’s weight.

•The place shall be able to inspect the unit as

the figure.

•The place where the unit shall be leveled.

•The place shall allow easy water

drainage.(Suitable dimension “H”is necessary

to get a slope to drain as figure.)

•The place shall easily connect with the

outdoor unit.

•The place where the unit is not affected by an

electrical noise.

•The place where air circulation in the room will

be good .

•There should not be any heat source or steam

near the unit

600600

Top view

(unit: mm)

Front view

Inspection hole

(600X600)

Control box

Indoor unit installation

■Installation of Unit

Install the unit above the ceiling correctly.

•Apply a joint-canvas between the unit and

duct to absorb unnecessary vibration.

•Apply a filter Accessory at air return hole.

CASE 1

POSITION OF SUSPENSION BOLT

(Unit:mm)

9/12K 708 678 434 51 537 455 230 172

18K 1060 1030 434 51 535 805 230 175

Dimension

Capacity

ABCDEFGH

Drainage hole

1-3 mm

8Multi Type Air Conditioner

•Select and mark the position for fixing

bolts.

•Drill the hole for set anchor on the face of

ceiling.

•Insert the set anchor and washer onto the

suspension bolts for locking the

suspension bolts on the ceiling.

•Mount the suspension bolts to the set

anchor firmly.

•Secure the installation plates onto the

suspension bolts (adjust level roughly)

using nuts, washers and spring washers.

CAUTION: Tighten the nut and bolt

to prevent unit falling

1 Set anchor

Old building New building

2 Plate washer

3 Spring washer

4 Nut

5 Suspension

bolts

Installation of Indoor

•Install the unit leaning to a drainage hole

side as a figure for easy water drainage.

•A place where the unit will be leveled and

that can support the weight of the unit.

•A place where the unit can withstand its

vibration.

•A place where service can be easily

performed.

CASE 2

POSITION OF CONSOLE BOLT

M10 Nut

M10 SP. washer

M10 washer

X 4

X 4 (Local

supply)

X 4

M10 Nut

M10 SP. washer

M10 washer

X 4

X 4 (Local

supply)

X 4

Installation Manual 9

Installation of Indoor

Ceiling

CAUTION

1~3mm

Drainage hole

U-Trap

A ≥70mm

B ≥2C

C ≥2 x SP

SP = External Pressure

(mmAq)

Ex) External Pressure

= 10mmAq

A ≥70mm

B ≥40mm

C ≥20mm

Make sure to be closed.

Unit

Drainage pipe

(Local supply)

Thermal insulator

(Local supply)

Drainage hole

CAUTION FOR GRADIENT OF

UNIT AND DRAIN PIPING

Lay the drain hose with a downward

inclination so water will drain out.

Front of view

•Always lay the drain with downward

inclination (1/50 to 1/100).

Prevent any upward flow or reverse flow

in any part.

•5mm or thicker formed thermal insulator

shall always be provided for the drain

pipe.

•Install the P-Trap (or U-Trap) to prevent

a water leakage caused by the blocking

of intake air filter.

Applied U-Trap Dimension

1. Install declination of the indoor unit is very important for the drain of the duct type air

conditioner.

2. Minimum thickness of the insulation for the connecting pipe shall be 5mm.

•The unit must be horizontal or declined to the drain hose connected when finished

installation.

CORRECT

INCORRECT

•Upward routing not

allowed

10 Multi Type Air Conditioner

•Drill the piping hole with 70mm dia, hole

core drill.

•Piping hole should be slightly slant to the

outdoor side.

5~7mm

Indoor Outdoor

WALL

INSULATION, OTHERS Insulate the joint and tubes completely.

All thermal insulation must comply with local requirement.

INDOOR UNIT

REFRIGERANT PIPE

•Insulate and tape both the gas pipe and

liquid pipe.

■After all workings are finished, check the working and operation.

•Air distribution Is the air circulation good?

•Drain Is the drainage smoothly and no sweating?

•Gas leakage Is the piping connection correctly?

•Wiring Is the wiring connection correctly?

•Service Valve Lock-bolt Is the lock-bolt of Service Valve loosened?

THERMAL INSULATION

TEST AND CHECK

Make sure that there is no clearance here.

Overlap with thermal

insulator for piping.

Thermal insulator for refrigerant pipe

(Local supply) Thermal insulator for

piping(Local supply)

Hose clip for thermal insulator(Local supply)

Union for liquid pipe

Refrigerant pipe and thermal

insulator(Local supply)

Union for gas pipe

Thermal insulator for refrigerant pipe

(Local supply)

Hose clip for thermal insulator

(Local supply)

Power cable

Liquid pipe

Thermal insulator

Gas pipe

Tape

Installation of Indoor

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