LG LG3ZMSS536 Installation manual

• Use caution when unpacking and installing.

- Sharp edges may cause injury.

• 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 become 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 abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury.

• It is desirable that the amount of residual oil less than 40 mg/10m.

• If air enters the refrigerant system, an excessively high pressure results, causing equipment damage or injury.

• Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant levels may cause failure of product.

• Ensure that you grab the chassis when you lift the unit.

- If you lift the unit with the panel held, it may result in serious injury or product failure.

• Do not turn on the breaker or power under condition that front panel, cabinet, top cover, control box cover are removed or opened.

- Otherwise, it may cause fire, electric shock, explosion or death.

• Make the connections securely so that the outside force of the cable may not be applied to the terminals.

- Inadequate connection and fastening may generate heat and cause a fire.

• After pump down, power must be turned off before removing the pipe.

- When operating this product without connecting the pipe, there will be high pressure inside the

compressor due to the entry of air, possibly causing explosion or injury.

• If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit when the refrigerant leaks.

- Consult the dealer regarding the appropriate measures to prevent the safety limit from being

exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due to lack of oxygen in the room could result.

• Use a vacuum pump or inert (nitrogen) gas when doing leakage test or air purge. Do not compress air or oxygen and do not use flammable gases.

- Otherwise, it may cause fire or explosion. There is the risk of death, injury, fire or explosion.

Operation

• Do not share the outlet with other appliances.

- It will cause an electric shock or a fire due to heat generation.

• Do not use the damaged power cord.

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

• Do not modify or extend the power cable.

- Scratches or peeling insulation on the power cables may result in fire or electric shock, and should

be replaced.

Symbols used in this Manual

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that may cause harm to the air conditioner.

This symbol indicates special notes.

Features

INTRODUCTION

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

More than

Sunroof

Fence or

obstacles

More than

(Unit : inch)

Minimum

27-19/32

inimum

11-13/16

(Unit : inch)

Minimum

1-13/16

78-3/4

23-19/32

Minimum 27-19/32

(Unit : inch)

Fixing Installation Plate

The wall you select should be strong and solid enough to prevent vibration

1 Mount 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.

2 Measure the wall and mark the centerline.

It is also important to use caution concerning 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.

Drill a Hole in the Wall

- Drill the piping hole with a Ø2-9/16” 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

1 Use the piping kit accessory or the pipes

purchased locally.

2 Measure the distance between the indoor

and the outdoor unit.

3 Cut the pipes a little longer than measured

distance.

4 Cut the cable 4.9 ft longer than the pipe

length.

Ø2-9/16”

3 Pull back the tubing holder. 4 Remove pipe port cover and positioning

the tubing

* The feature can be changed according to

type of model.

1 Insert 4 hooks of the chassis cover into

gap of the chassis certainly.

2 Push the 6 point hook to assemble chassis

cover. Push the chassis cover ①→②.

Assembly of chassis cover

- Press on the tubing cover and unfold the

tubing to downward slowly. And then bend to the left side slowly.

* The feature can be changed according to

type of model.

- Following bending case from right to left directly may cause damage to the tubing.

* The feature can be changed according to

type of model.

Good case

Bad case

NOTE

To protect the chassis cover bended, assembly chassis cover correctly.

NOTE

Installation Information. For right piping. Follow the instruction above.

CAUTION

• Secure the pipe by using the tubing cover.

• Do not strongly press the refrigerant pipes onto the bottom frame.

• Do not strongly press the refrigerant pipes on the front grille, either.

* The feature can be changed according to

type of model.

* The feature can be changed according to

type of model.

2 Secure the cable onto the control board

with the cable retainer.

3 Tape the tubing pipe, drain hose and the

connection cable. Be sure that the drain hose is located at the lowest side of the bundle. Locating at the upper side can cause overflow from the drain pan through the inside of the unit.

Indoor Outdoor

Indoor Unit Drain hose

Insulation

(More than 100~300mm

length and 7mm thickness)

Extension drain hose

CAUTION

If the extension drain hose is routed inside the room, insulate the hose with an insulation material* so that dripping from sweating (condensation) could not damage furniture or floors.

• Foamed polyethylene or equivalent is recommended.

CAUTION

Must use the elbow type (L-Type) conduit

Method:

1. Disassemble bracket

(from indoor unit)

2. Assemble it with conduit

3. Reassemble it with indoor

unit.

CAUTION

Insert the drain hose more than 1-15/16” so it won’t be pulled out of the drain pipe.

Insert the drain hose to this depth so it won’t be pulled out of drain pipe.

1-15/16” or more

Drain Hose

Inner wall

Vinyl chloride drain pipe (VP-30)

Outer wall

1(L1) 2(L2) 3

Tubing cover

Tubing Cover

Cover control

Terminal Block

Outside Diameter Torque

Outdoor unit

1 Remove the tubing cover from the unit by

loosening the screw.

<9, 12k>

<18, 24k>

2 Align the center of the pipings and

sufficiently tighten the flare nut by hand.

* When Indoor unit (18/24k) is connected to

the Multi Outdoor unit, use the connector shown above.

3 Finally, tighten the flare nut with torque

wrench until the wrench clicks.

- When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench.

<9, 12k>

<18, 24k>

* The feature can be changed according a

type of model.

mm inch kgf.cm N.m Ø6.35 1/4 180~250 17.6~24.5 Ø9.52 3/8 340~420 33.3~41.2 Ø12.7 1/2 550~660 53.9~64.7

Ø15.88 5/8 630~820 61.7~80.4

Outdoor unit Outdoor unit Outdoor unit

Gas side piping (Bigger diameter)

Liquid side piping (Smaller diameter)

Torque wrench

Outdoor unit

Torque wrench

Liquid side piping

(Smaller diameter)

Gas side piping

(Bigger diameter)

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

1 Firmly hold copper pipe in a bar with the

dimension shown in below table.

2 Carry out flaring work with the flaring tool.

Check

1 Compare the flared work with the figure

by.

2 If a flared section is defective, cut it off

and do flaring work again.

Connecting the Piping

1 Pull the cover at the bottom of the indoor

unit. Pull the cover ①→②.

2 Remove the cover from the indoor unit.

Pipe

Reamer

Point down

Pipe diameter

Inch (mm)

A inch (mm)

Wing nut type Clutch type

Ø1/4 (Ø6.35)

0.04~0.07 (1.1~1.8) 0~0.02 (0~0.5)

Ø3/8 (Ø9.52)

Ø1/2 (Ø12.7)

Ø5/8 (Ø15.88)

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

Installation of Indoor Unit

1 Hook the indoor unit onto the upper por-

tion of the installation plate.( engage the three hooks at the top of the indoor unit with the upper edge of the installation plate) Ensure that the hooks are properly seated on the installation plate by moving it left and right

The feature can be changed according to type of model.

2 Unlock the tubing holder from the chassis

and mount between the chassis and installation plate in order to separate the bottom side of the indoor unit from the wall.

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

Piping

1 Raise the cover of terminal block. 2 Insert the connecting cable through the

bottom side of indoor unit and connect the cable. (You can see detail contents in ‘Connecting the cables’ section.)

3 Secure the cable onto the control board

with the cable retainer.

4 Tape the tubing pipe, drain hose and the

connection cable. Be sure that the drain hose is located at the lowest side of the bundle. Locating at the upper side can cause overflow from the drain pan through the inside of the unit.

1(L1) 2(L2) 3

* The feature can be changed according to

type of model.

NOTE

Insert the drain hose at left side when you use left side piping type.

Outside Diameter Torque

Connecting the installation pipe and drain hose to the indoor unit.

1 Align the center of the pipes and sufficient-

ly tighten the flare nut by hand

* When Indoor unit (6.6 kW) is connected to

the Multi Outdoor unit, use the connector.

2 Tighten the flare nut with a wrench

3 When needed to extend the drain hose of

indoor unit, assembly the drain pipe as shown on the drawing

Wrap the insulation material around the connecting portion.

1 Overlap the connection pipe insulation

material and the indoor unit pipe insulation material. Bind them together with vinyl tape so that there may be no gap.

2 Set the tubing cutting line upward.

Wrap the area which accommodates the rear piping housing section with vinyl tape.

3 For left rear piping, bundle the piping and

drain hose together by wrapping them cloth tape over the range within which they fit into the rear piping housing section.

* Wrap the piping of the indoor unit that are

visible from the outside with vinyl tape.

mm inch kgf.cm N.m Ø6.35 1/4 180~250 17.6~24.5 Ø9.52 3/8 340~420 33.3~41.2 Ø12.7 1/2 550~660 53.9~64.7

Ø15.88 5/8 630~820 61.7~80.4

Vinyl tape(narrow)

Connection pipe

Connecting cable

Cloth tape

Wrap with cloth tape

Indoor unit pipe

Pipe

Gas Pipe

Liquid Pipe

Cutting Line

Good Case Bad Case

* Tubing cutting line have to be upward.

Connecting the Cables

Indoor unit

Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and the terminal No. are the same as those of the indoor unit.)

Insert the connecting cable through the bottom side of indoor unit and connect the cable.

(1) Open the Decor (2) Unscrew the screw of C/Box (3) Slide up the Metal Plate Cover (4) Connect the connecting cable (5) After complete connecting the cables,

should assemble the Metal Plate Cover by screw.

* The feature can be changed according a

type of model.

Power connecting cable

1(L1) 2(L2) 3

CAUTION

- The circuit diagram is a subject to

change without notice.

- The earth wire should be longer than the

common wires.

- When installing, refer to the circuit

diagram on the chassis cover.

- Connect the wires firmly so that they

may not be pulled out easily.

- Connect the wires according to color

codes, referring to the wiring diagram.

CAUTION

- Assemble it with conduit.

<9, 12k> <18, 24k>

The power cord connected to the outdoor unit should be complied with the following specifications(UL recognized or CSA certified)

CAUTION

INSTALLATION MANUAL AIR CONDITIONER

TYPE : WALL MOUNTED Original instruction

TIPS FOR SAVING ENERGY

Here are some tips that will help you minimize the power consumption when you use the air conditioner. You can use your air conditioner more efficiently by referring to the instructions below:

• Do not cool excessively indoors. This may be harmful for your health and may consume more

electricity.

• Block sunlight with blinds or curtains while you are operating the air conditioner.

• Keep doors or windows closed tightly while you are operating the air conditioner.

• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.

• Speed up the fan to cool or warm indoor air quickly, in a short period of time.

• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air condition-

er is used for many hours.

• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the

air flow or weaken the cooling / dehumidifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes. Write the model number and the serial number here:

Model number :

Serial number :

You can find them on a label on the side of each unit.

Dealer’s name :

Date of purchase :

P/No : MFL67713861

ENGLISH

Air outlet

Air deﬂector

(Vertical louver & Horizontal vane)

Air Intake Vents

Air Outlet Vents

Air ﬁlter

Front grille Signal receiver Display

On/Off button

Connecting Wires

Piping

Drain Hose

Base Plate

INSTALLATION MAP

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.

Vinyl tape (Wide)

• Apply after carrying out a drainage test.

• To carry out the drainage

Saddle

* The feature can be changed according a type of model. * Work to the vinyl tape should up from below.

NOTE

• You should purchase the installation parts. (lt can be changed according to market)

test, remove the air ﬁlters and pour water into the heat exchanger.

Gas side piping (Optional Parts) Liquid side piping (Optional Parts) Additional drain pipe

Vinyl tape (Narrow) Drain hose Connecting cable (Optional Parts)

IMPORTANT SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product.

WARNING

It can result in serious injury or death when the directions are ignored.

CAUTION

It can result in minor injury or product damage when the directions are ignored.

WARNING

• Installation or repairs made by unqualified persons can result in hazards to you and others.

• Air conditioner Shall be installed in accordance with national wiring regulations.

• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.

• The information contained in the manual is intended for use by a qualified service technician familiar with safety procedures and equipped with the proper tools and test instruments.

• Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death.

• When the power cord is to be replaced, replacement work shall be performed by authorized personnel only using only genuine replacement parts.

• Air conditioner shall be disconnected from its power source during service and when replacing parts.

• Installation MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code NFPA 70/ANSI C1-1003 or current edition and Canadian Electrical Code Part1 CSA C.22.1.

Installation

• Always perform grounding.

- Otherwise, it may cause electrical shock.

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

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

• For installation of the product, always contact the service center or a professional installation agency.

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

• Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit.

- If the electrical part cover of the indoor unit and the service panel of the outdoor unit are not

attached securely, it could result in a fire or electric shock due to dust, water, etc.

• Always install an air leakage breaker and a dedicated switching board.

- No installation may cause a fire and electrical shock.

• Do not keep or use flammable gases or combustibles near the air conditioner.

- Otherwise, it may cause a fire or the failure of product.

• Ensure that an installation frame of the outdoor unit is not damaged due to use for a long time.

- It may cause injury or an accident.

• Do not disassemble or repair the product randomly.

- It will cause a fire or electrical shock.

• Do not install the product at a place that there is concern of falling down.

- Otherwise, it may result in personal injury.

• Take care so that the power cord may not be pulled during operation.

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

• Unplug the unit if strange sounds, smell, or smoke comes from it.

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

• Keep the flames away.

- Otherwise, it may cause a fire.

• Take the power plug out if necessary, holding the head of the plug and do not touch it with wet hands.

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

• Do not use the power cord near the heating tools.

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

• Do not open the suction inlet of the indoor/outdoor unit during operation.

- Otherwise, it may electrical shock and failure.

• Do not allow water to run into electrical parts.

- Otherwise, it may cause the failure of machine or electrical shock.

• Hold the plug by the head when taking it out.

- It may cause electric shock and damage.

• Never touch the metal parts of the unit when removing the filter.

- They are sharp and may cause injury.

• Do not step on the indoor/outdoor unit and do not put anything on it.

- It may cause an injury through dropping of the unit or falling down.

• Do not place a heavy object on the power cord.

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

• When the product is submerged into water, always contact the service center.

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

• Take care so that children may not step on the outdoor unit.

- Otherwise, children may be seriously injured due to falling down.

CAUTION

Installation

• Install the drain hose to ensure that drain can be securely done.

- Otherwise, it may cause water leakage.

• Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to the neighbors.

- Otherwise, it may cause dispute with the neighbors.

• Always inspect gas leakage after the installation and repair of product.

- Otherwise, it may cause the failure of product.

• Keep level parallel in installing the product.

- Otherwise, it may cause vibration or water leakage.

Operation

• Avoid excessive cooling and perform ventilation sometimes.

- Otherwise, it may do harm to your health.

• Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent.

- The appearance of the air conditioner may deteriorate, change color, or develop surface flaws.

• Do not use an appliance for special purposes such as preserving animals vegetables, precision machine, or art articles.

- Otherwise, it may damage your properties.

• Do not place obstacles around the flow inlet or outlet.

- Otherwise, it may cause the failure of appliance or an accident.

* Features may change according to the type of model.

INSTALLATION PARTS

Name

Installation plate

Type "A" screw

Type "B" screw

Type "C" screw

Type "D" screw

Bracket

Remote control

holder

Cloth tape

Connector

Terminal

Screws for fixing panels are attached to decoration panel. When Indoor unit (18/24k) is connected to the Multi Outdoor unit, use the connector.

Quantity Shape

1 EA

The feature can be changed according to type of model.

5 EA

2 EA

1 EA

3EA (18k,24k)

1EA

Type “B” screw

18k,24k : ڸ Ø 3/8 in. → Ø 1/2 in. ڹ Ø 5/8 in. → Ø 1/2 in. ں Ø 3/8 in. → Ø 1/4 in.

INSTALLATION TOOLS

Figure FigureName

Screw driver

Electric drill

Measuring tape, Knife

Hole core drill

Spanner

Torque wrench

Name

Multi-meter

Hexagonal wrench

Ammeter

Gas-leak detector

Thermometer,

Level

Flaring tool set

INSTALLATION

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 4 in. The unit should be installed as high as possible on the wall, allowing a minimum of 8 in. from ceiling.

- Use a metal detector to locate studs to prevent unnecessary damage to the wall.

More than

* The feature can be changed according to

type of model.

NOTE

The gap between the indoor unit and ceiling is needed more than 8 in. for disassemble the air filter.

NOTE

Remove obstructions to prevent blockage of airflow path.

Outdoor unit

- If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted.

- Ensure that the space around the back and sides is more than 12 in. The space in front of the unit should be more than 28 in. of space.

- Do not place animals and plants in the path of the warm air.

- Take the weight of the air conditioner into account and select a place where noise and vibration are minimum.

More than 8

More than

(Unit : inch)

- Select a place where the warm air and noise from the air conditioner do not disturb neighbors.

- Sunroof is recommended for installations that are exposed to direct sunlight and for installations in cold climates with heavy snow which can accumulate on top of outdoor unit.

* The feature can be changed according to

type of model.

Outdoor Unit Service Access and Allowable Clearances

1 Where there are obstacles on both suction

and discharge sides (discharge side obstacle is lower than the outdoor unit).

2 Where there are obstacles above, and on

both suction and discharge sides (discharge side obstacle is lower than the outdoor unit).

1 2 3

Installation Plate

Chassis

Hook

Installation Plate

Chassis

Hook

Place a level on raised tab

Unit Outline

C Type : 16.5 C Type : 16.5

Ø2-9/16”

Installation Plate

C Type

Left rear piping

Place a level on raised tab

Unit Outline

C Type: 19.4 C Type: 19.8

Type "A" Screws

C Type : 5.3C Type : 3.9

Ø2-9/16”

7.66 (Unit : Inch)

Right rear piping

Copper

pipe

Indoor

WALL

90°

Slanted Uneven Rough

Outdoor

3/16"~5/16"

Indoor unit back side view

Right

Tubing holder

Left

Backwards

View

Connecting cable

Slide up the metal plate cover

Terminal block

Connecting cable Cable retainer

Tape

Drain hose

Connecting pipe

Ø2-9/16”

Left rear piping

C Type: 5.3

Measuring Tape

3.3

Measuring Tape

Hanger

Flare nut

Copper tube

Ø2-9/16”

3.3

C Type: 5.9

(Unit : Inch)

Right rear piping

Smooth all round

Inside is shiny without scratches

Even length

all round

Inclined

= Improper ﬂaring =

Surface

Cracked Uneven

damaged

thickness

Installation plate

Tubing Holder

View

Drain hose

View

Slide up the metal plate cover

Terminal block

Tape

Connecting cable

Drain hose

Connecting pipe

Connecting cable Cable retainer

Connector

Insulation material

Indoor unit tubing Flare nut Pipes

Spanner (ﬁxed)

Flare nut

Torque wrench

Indoor unit tubing

Connection pipe

Decor

Power

Power connecting cable

connecting cable

Drain pipe

Wrap with cloth tape

Cloth tape

Adhesive

Indoor unit drain hose

Vinyl tape(narrow)

Pipe

Drain hose

54 6 7

* All power wiring/communication cables

must comply with applicable local and national codes.

* Field wiring shall be done such that the cur-

rentcarrying conductors become taut before the earthing conductor if the cord slips out of the cord anchorage.

1 Remove the front panel (Right) or cover

control from the unit by loosening the screw. Connect the wires to the terminals on the control board individually.

2 Secure the cable onto the control board

with the cord clamp.

3 Refix the front panel(Right) to the original

position with the screw.

4 Use a recognized circuit breaker between

the power source and the unit. A disconnecting device to adequately disconnect all supply lines must be fitted.

<9, 12k>

<18, 24k>

Circuit

Breaker

(A)

Capacity(Btu/h)

9, 12k 18, 24k

15 25

Outdoor unit

Terminal block

Over 0.2"

Cover control

Conduit panel

Connecting

cable

Power supply

cord

1(L1)2(L2) 1(L1)2(L2)

CAUTION

• When using the separate wire as the power cord, please fix the separate wire into the control box panel by using tie wrap as the fixture. "A" & "B" are minimum recommended wire size.

• Provide the circuit breaker between power source and the unit as shown by.

Main power source

Round Pressure terminal and connecting requirement.

Use round pressure terminals for connections to the power terminal block. When laying ground wiring, you must use round pressure terminals.

Outdoor unit

Terminal block

Connecting cable

Power supply cord

Conduit panel

Tubing cover

Over 0.2"

* The feature can be changed according to

type of model.

Do not raise

Water leakage

Tip of drain hose dipped in water

Water leakage

Ditch

Less than 2” gap

Accumulated drain water

Air

Waving

Water leakage

Downward slope

1 Fix the outdoor unit with a bolt and nut

(Ø 0.39 in.) tightly and horizontally on a concrete or rigid mount.

2 When installing on the wall, roof or

rooftop, anchor the mounting base securely with a nail or wire assuming the influence of wind and earthquake.

3 If the vibration of the unit is transmitted to

the pipe, secure the unit with an anti-vibration rubber.

Operate the unit for 15~20 minutes, then check the system refrigerant charge:

1 Measure the pressure of the gas side serv-

ice valve.

2 Measure the air temperature from inlet and

outlet of air conditioner.

Ensure the difference between the inlet and outlet temperature is more than 14.4 ˚F.

4 For reference; the gas side pressure at

optimum condition is shown on table (cooling)

The air conditioner is now ready to use.

* The feature can be changed according

a type of model.

Settlement of outdoor unit

Evaluation of the performance

Refrigerant

Outside ambient

TEMP.

The pressure of the

gas side service valve.

R22 95 °F

56.8~71.0 P.S.I.G. (4~5 kg/cm

R410A 95 °F

120~135 P.S.I.G.

(8.5~9.5 kg/cm

Test Running

- Check that all tubing and wiring are properly connected.

- Check that the gas and liquid side service valves are fully open.

1 Remove the battery cover by pulling it

according to the arrow direction.

2 Insert new batteries making sure that the

(+) and (–) of battery are installed correctly.

3 Reattach the cover by pushing it back into

position.

- If you press and hold the On/Off button for 3 – 5 seconds instead of 6 seconds, the unit will switch to the test operation.

- In the test operation, the unit blows out strong air for cooling for 18 minutes and then returns to the factory default settings.

Prepare remote controller

NOTE

• Use 2 AAA(1.5 V) batteries. Do not use rechargeable batteries.

• Remove the batteries from the remote controller if the system is not used for a long time

Test operation

Cap

2-way valve (Close)

Gas side

Liquid side

3-way valve (Close)

Outdoor unit

Gas side

Liquid side

Cap

2-way valve(Close)

3-way valve(Close)3-way valve(Close)

2-way valve(Close)

3-way valve(Close)

Outdoor unit

Indoor unit

Outdoor unit

Indoor unit

CAUTION

- Air conditioners should not be installed in

areas where corrosive gases, such as acid or alkaline gas, are produced.

- Do not install the product where it could be

exposed to sea wind (salty wind) directly. It can result corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient performance.

- If outdoor unit is installed close to the sea-

side, it should avoid direct exposure to the sea wind. Otherwise it needs additional anticorrosion treatment on the heat exchanger.

Installation guide at the seaside

Selecting the location (Outdoor Unit)

If the outdoor unit is to be installed close to the seaside, then direct exposure to the sea wind should be avoided.

Install the outdoor unit on the opposite side of the sea wind direction.

In case of installing the outdoor unit on the sea side, setup a windbreak to prevent sea wind.

- It should be strong enough like concrete to prevent the sea wind from the sea.

- The height and width should be more than 150% of the outdoor unit.

- Keep more than 2.3 ft of space between outdoor unit and the windbreak for easy air flow.

Select a well-drained place.

Auxiliary heater relay kit

Auxiliary heater relay kit is not available on single zone wall mounted models.

Sea wind

Windbreak

NOTE

- If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment.

- Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water

* Do not use seawater when you clean

up the heat exchanger.

Air

Conditioner

Over

0.2 in.

Circuit Breaker Use a circuit breaker or time delay fuse.

Round pressure terminal

Power wire (Ground wire)

Checking the Drainage

To check the drainage.

1 Pour a glass of water on the evaporator. 2 Ensure the water flows through the drain

hose of the indoor unit without any leakage and goes out the drain exit.

Connecting area

drain hose

Leakage checking

Drain pan

Drain

hose Leakage checking

* The feature can be changed according to

type of model.

Drain piping

1 The drain hose should point downward for

easy drain flow.

2 Do not make drain piping like the

following.

* The feature can be changed according to

type of model.

Installing drain piping of the outdoor unit

Depending on installation site, it may be required to install drain plug for drainage (Supplied with the unit). In cold areas, do not use a drain hose with the outdoor unit. Otherwise, drain water may freeze, impairing the heating performance.

1 See the figure below for installation of the

drain plug.

A Drain nipple B Drain cap C Drain washer

Connect a field supplied vinyl hose to the drain nipple (A). If the hose is too long and hangs down, fix it carefully to prevent kinks.

<9, 12k>

<18, 24k>

* The feature can be changed according to

type of model.

2 Leak test

- Connect the manifold valve(with pressure gauges) and dry nitrogen gas cylinder to this service port with charge hoses.

CAUTION

Be sure to use a manifold valve for air purging. If it is not available, use a stop valve for this purpose. The knob of the 3-way valve must always be kept close.

- Pressurize the system to maximum 250 P.S.I.G. (17.6 kgf/cm or 400 P.S.I.G. (28.1 kgf/cm model) with dry nitrogen gas and close the cylinder valve when the gauge reading reaches 250 P.S.I.G. (17.6 kgf/cm2G) (R22 model) or 400 P.S.I.G. (28.1 kgf/cm2G) (R410A model). Next step is leak test with liquid soap.

CAUTION

To avoid nitrogen entering the refrigerant system in a liquid state, the top of the cylinder must be higher than its bottom when you pressurize the system. Usually, the cylinder is used in a vertical standing position.

WARNING

There is a risk of fire and explosion.

- Inert gas (nitrogen) should be

used when you check plumbing leaks, cleaning or repairs of pipes etc. If you are using combustible gases including oxygen, product may have the risk of fires and explosions.

WARNING

It may cause explosion or

injury.

- After pump down, power

must be turned off before removing the pipe. When operating this product without connecting the pipe,

there will be high pressure inside the compressor due to the entry of air, possibly causing explosion or injury.

G) (R22 model)

G) (R410A

- Do a leak test of all joints of the tubing(both indoor and outdoor) and both gas and liquid side service valves. Bubbles indicate a leak. Be sure to wipe off the soap with a clean cloth.

- After the system is found to be free of leaks, relieve the nitrogen pressure by loosening the charge hose connector at the nitrogen cylinder. When the system pressure is reduced to normal, disconnect the hose from the cylinder.

Indoor unit

Outdoor unit

* The feature can be changed according

a type of model.

Pressure gauge

Charge hose

Nitrogen gas cylinder(in vertical standing position)

Manifold valve

Soap water method

- Remove the caps from the 2-way and 3-way valves.

- Remove the service-port cap from the 3-way valve.

- Apply a soap water or a liquid neutral detergent on the indoor unit connection or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping.

- If bubbles come out, the pipes have leakage

Evacuation

- Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit. Confirm the "Lo" knob of the pressure Gauge is open. Then, run the vacuum pump. The operation time for evacuation varies with tubing length and capacity of the pump. The following table shows the time required for evacuation.

Bolt

Discharge air

Tubing connection

Inlet temperature

Discharge temperature

CAUTION

According to the confirmation of the above conditions, prepare the wiring as follows.

1 Never fail to have an individual power cir-

cuit specifically for the air conditioner. As for the method of wiring, be guided by the circuit diagram posted on the inside of control cover.

2 The screw which fasten the wiring in the

casing of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation. Check them and make sure that they are all tightly fastened. (If they are loose, it could cause burn-out of the wires.)

3 Specification of power source. 4 Confirm that electrical capacity is suffi-

cient.

5 See that the starting voltage is main-

tained at more than 90 percent of the rated voltage marked on the name plate.

6 Confirm that the cable thickness is as

specified in the power source specification. (Particularly note the relation between cable length and thickness.)

7 Always install an earth leakage circuit

breaker in a wet or moist area.

8 The following would be caused by voltage

drop.

- Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of the normal function of the overload.

9 The means for disconnection from a

power supply shall be incorporated in the fixed wiring and have an air gap contact separation of at least 0.12 in. in each active(phase) conductors.

10 Open the terminal cover block before

connecting the indoor side wire.

Finishing the indoor unit installation

1 Mount the tubing holder in the original

position.

2 Ensure that the hooks are properly seated

on the installation plate by moving it left and right.

3 Press the lower left and right sides of the

unit against the installation plate until the hooks engage into their slots (clicking sound).

4 Finish the assembly by screwing the unit

to the installation plate by using two pieces of type "C" screws. And assemble a chassis cover.

Type 'C' screw

* The feature can be changed according to

type of model.

CAUTION

The indoor unit can be dropped from the wall, the indoor unit is not screwed correct position on the install plate.

To avoid the gap between the indoor unit and wall , screw the indoor unit to the install plate correctly.

CAUTION

• Before finishing installation of the indoor unit, seal the hole of a wall except the pipe’s ways to prevent condensate from inflow of outdoor air.

Forming the Piping

Form the piping by wrapping the connecting portion of the indoor unit with insulation material and secure it with two kinds of vinyl tapes.

- If you want to connect an additional drain hose, the end of the drain outlet should be routed above the ground. Secure the drain hose appropriately.

Saddle

Pipe

Vinyl tape(narrow)

Wrap with vinyl tape(wide)

Connecting cable

Pipings

Taping

Drain hose

In cases where the outdoor unit is installed below the indoor unit perform the following.

1 Tape the piping, drain hose and connecting

cable from down to up.

2 Secure the tapped piping along the exteri-

or wall using saddle or equivalent.

Seal a small opening around the pipings with gum type sealant.

Trap is required to prevent water from entering into electrical parts.

* The feature can be changed according to

type of model.

In cases where the Outdoor unit is installed above the Indoor unit perform the following.

1 Tape the piping and connecting cable from

down to up.

2 Secure the taped piping along the exterior

wall. Form a trap to prevent water entering the room.

3 Fix the piping onto the wall using saddle or

equivalent.

Seal a small opening around the pipings with gum type sealant.

Trap

Air Purging

The air and moisture remaining in the refrigerant system have undesirable effects as indicated below.

1 Pressure in the system rises. 2 Operating current rises. 3 Cooling(or heating) efficiency drops. 4 Moisture in the refrigerant circuit may

freeze and block capillary tubing.

5 Water may lead to corrosion of parts in the

refrigeration system.

Therefore, after evacuating the system, take a leak test for the piping and tubing between the indoor and outdoor unit.

Air purging with vacuum pump

1 Preparation

- Check that each tube(both liquid and gas side tubes) between the indoor and outdoor units have been properly connected and all wiring for the test run has been completed. Remove the service valve caps from both the gas and the liquid side on the outdoor unit. Note that both the liquid and the gas side service valves on the outdoor unit are kept closed at this stage.

<9, 12k>

<18, 24k>

* The feature can be changed according

a type of model.

Required time for evacuation when 30 gal/h

vacuum pump is used

If tubing length is

less than 33 ft

10 min. or more 15 min. or more

- When the desired vacuum is reached, close the knob of the 3-way valve and stop the vacuum pump.

If tubing length is

longer than 33 ft

Finishing the Job

- With a service valve wrench, turn the valve of liquid side counter-clockwise to fully open the valve

- Turn the valve of gas side counter-clockwise to fully open the valve

- Loosen the charge hose connected to the gas side service port slightly to release the pressure, then remove the hose.

- Replace the flare nut and its bonnet on the gas side service port and fasten the flare nut securely with an adjustable wrench. This process is very important to prevent leakage from the system

- Replace the valve caps at both gas and liquid side service valves and fasten them tight. This completes air purging with a vacuum pump.

- Replace the pipe cover to the outdoor unit by one screw. Now the air conditioner is ready for test run.

Outdoor unit

Manifold valve

Pressure gauge

Open Close

- Replace the valve caps at both gas and liquid side service valves and fasten them tight. This completes air purging with a vacuum pump.

- Replace the pipe cover to the outdoor unit by one screw Now the air conditioner is ready for test run.

* The feature can be changed according a

type of model.

Vacuum pump

NOTE

If the actual pressure is higher than shown, the system is most likely overcharged, and charge should be removed. If the actual pressure are lower than shown, the system is most likely undercharged, and charge should be added.

Pump Down

This is performed when the unit is relocated or the refrigerant circuit is serviced.

Pump Down means collecting all refrigerant into the outdoor unit without the loss of refrigerant.

NOTE

Be sure to perform Pump Down procedure in the cooling mode.

WARNING

It may cause explosion or injury. After pump down, power must be turned

off before removing the pipe. When operating this product without connecting the pipe, there will be high pressure insidce the compressor due to the entry of air, possibly causing explosion or injury.

Pump Down Procedure

- Connect a low-pressure gauge manifold hose to the charge port on the gas side service valve.

- Open the gas side service valve halfway and purge the air in the manifold hose using the refrigerant.

- Close the liquid side service valve(all the way).

- Turn on the unit's operating switch and start the cooling operation.

- When the low-pressure gauge reading 14.2 to 7.1 P.S.I.G and then quickly turn off the unit. Now Pump Down procedure is completed, and all refrigerant is collected into the outdoor unit.

C/O(Cooling Only) Mode

C/O switching function set up

1 Supply the power to the unit with no func-

tions active.

2 Enter the Installer Code and set the code

to 45.

3 Press to select the code No. 45 then,

check if buzzer beeps.

4 Cut the power to the unit. 5 Turn back on the power to the unit after 30

seconds.

C/O switching function disable set up

1 Supply the power to the unit with no func-

tions active.

2 Enter the Installer Code and set the code

to 43.

3 Press to select the code No. 43 then,

check if buzzer beeps.

4 Set the code to 46 and press then,

check if buzzer beeps.

5 Cut the power to the unit. 6 Turn back on the power to the unit after 30

seconds.

* The feature can be changed according

a type of model.

98 10 11

NOTE

- Once the function is set up, heating and automatic operation cannot be used

- Once the function is disable it will return to its normal state

Code cannot be entered when it is in operation mode. It must be OFF state to enter code

Even if able to enter code in ON state, it won’t function if the code is not entered in OFF state

- Considering the communication time of the

accessory built on the Air-conditioning, operate the accessory approximately after 1 min.

Entire lock or mode lock cannot be set if heating and automatic operation is set through central controller

* How to enter the installer mode

Press Reset Button and ‘A’ Button ( )

Press

* How to set the code

Set the code you want by pressing TEMP

_) and press .

button (

SETUP

10 digit

1 digit

Piping Length and Elevation

Single Split Model

Capacity

(Btu/h)

9k / 12k Ø 9.52 3/8 Ø 6.35 1/4 24.6 82 49.2 0.22

18k Ø 15.88 5/8 Ø 9.52 3/8 24.6 114.8 49.2 0.38

24k Ø 15.88 5/8 Ø 9.52 3/8 24.6 114.8 49.2 0.38

※

During the installation and binding of Multi model, refer to Multi outdoor unit installation manual.

Pipe Size

GAS LIQUID

mm inch mm inch

Standard

Multi Model

Capacity

(Btu/h)

7k / 9k / 12k / 15k Ø 9.52 3/8 Ø 6.35 1/4

18k / 24k Ø 12.7 1/2 Ø 6.35 1/4

CAUTION

• Capacity is based on standard length and maximum allowable length is on the basis of reliability.

• Additional refrigerant must be charged after 41 ft (9k, 12k Model) / 24.6 ft (18k, 24k Model)

GAS LIQUID

mm inch mm inch

Length

(ft)

Max.

Length

Ⓐ (ft)

Pipe Size

Max.

Elevation

Ⓑ (ft)

Additional Re-

frigerant (oz/ft)

Manual the decor, air ﬁlter Assembly & Disassembly

Disassemble the decor

1 Turn off the power and unplug the power cord. 2 Pull the decor at the bottom of the indoor unit.

Remove the decor from the indoor unit.

Assemble the decor

Turn off the power and unplug the power cord.

2 Insert 3 or 4 hooks of the decor into gap of

the indoor unit certainly.

Push the nooks to assemble the decor.

Disassemble the air ﬁlter

Turn off the power and unplug the power cord.

Hold the knob of the air filter, Lift it up slightly.

3 Hold the knob of the air filter, lift it up

slightly and remove it from the unit.

Assemble the air ﬁlter

Turn off the power and unplug the power cord.

2 Insert the hooks of the air filter into the

front grille.

Push down hooks to assemble the air filter.

4 Check side of the front grille for the air filter

assembled correctly.

* Refer to Multi outdoor unit installation manual.

CAUTION

The air filter can be broken when it is bended.

Operation ranges

The table below indicates the temperature ranges the air conditioner can be Operated within. * With wind baffle installed, the minimum temperature will be 0 °F D.B. in cooling.

Mode Indoor temperature Outdoor temperature Cooling 64 ~ 90 °F 14 [0*] ~ 118 °F Heating 61 ~ 86 °F -4 ~ 75 °F

Check test items

1 Indoor unit is hooked to the installation plate properly. 2 The gas and liquid service valves are fully opened. 3 There is no refrigerant gas leakage. 4 System is properly grounded.(No electrical leakage) 5 The connection cable is clamped firmly. 6 Indoor unit receives remote control commands and operates properly. 7 Cooling/Heating operation is normal. 8 There is no abnormal sound. 9 There is no water leakage.

Test Items Check

1312 14 15

Precautions about installation in regions with extreme snowfall and cold temperatures

To ensure the outdoor unit operates properly, certain measures are required in locations where there is a possibility of heavy snowfall or severe wind chill or cold :

1 Prepare for severe winter wind chills and heavy snowfall, even in areas of the country where these

are unusual phenomena.

2 Position the outdoor unit so that its airflow fans are not buried by direct, heavy snowfall.

If snow piles up and blocks the airflow, the system may malfunction.

3 Remove any snow that has accumulated 4 in or more on the top of the outdoor unit. 4 Place the outdoor unit on a raised platform at least 20 in higher than the aver- age annual snowfall

for the area. If the frame width is wider than the outdoor unit, snow may accumulate.

5 Install a snow protection hood. 6 To prevent snow and heavy rain from entering the outdoor unit, install the suction and dis- charge

ducts facing away from direct winds.

7 Additionally, the following conditions should be taken into consideration when the unit operates in

defrost mode:

- If the outdoor unit is installed in a highly humid environment (near an ocean, lake, etc.), en- sure that the site is well-ventilated and has a lot of natural light. (Example: Install on a rooftop.)

NOTE

lf the air filter is not assembled correctly, Dust and other substance come into the indoor unit. lf look at the indoor unit from higher than it, can assemble the air filter easily.