LG ARNU42GM2A4, ARNU96GB8A4 INSTALLATION INSTRUCTIONS

INSTALLATION MANUAL

AIR

CONDITIONER

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.

Ceiling Concealed Duct

Original instruction

[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

<![if ! IE]> <![endif]>ЯЗЫК РУССКИЙ	<![if ! IE]> <![endif]>ENGLISH
<![if ! IE]> <![endif]>УКРАÏНСЬКА	<![if ! IE]> <![endif]>ITALIANO
<![if ! IE]> <![endif]>ТІЛІ ҚАЗАҚ	<![if ! IE]> <![endif]>ESPAÑOL
<![if ! IE]> <![endif]>МОВА БЕЛАРУСКАЯ	<![if ! IE]> <![endif]>FRANÇAIS
<![if ! IE]> <![endif]>TILI OʻZBEK	<![if ! IE]> <![endif]>DEUTSCH
	<![if ! IE]> <![endif]>ΕΛΛΗΝΙΚΆ
	<![if ! IE]> <![endif]>ČEŠTINA
	<![if ! IE]> <![endif]>NEDERLANDS
	<![if ! IE]> <![endif]>POLSKI
	<![if ! IE]> <![endif]>ROMÂNĂ LIMBA

MFL67142716	www.lg.com
Rev.01_011520	Copyright © 2017 - 2020 LG Electronics Inc. All Rights Reserved.

Table of contents

TABLE OF CONTENTS

3FEATURES

4 SAFETY INSTRUCTIONS

10 INSTALLATION

10Selection of the best location (Low Static)

11Selection of the best location (Mid / High Static)

13Ceiling dimension and hanging bolt location (Low Static)

14Ceiling dimension and hanging bolt location (Mid Static)

15Ceiling dimension and hanging bolt location (High Static)

16Indoor Unit Installation

16 Wiring Connection

19Checking the Drainage

20Drain Piping

22DIP Switch Setting

23Group Control Setting

28Model Designation

28Airborne Noise Emission

28Limiting concentration

29 HOW TO SET E.S.P?

2 Indoor Unit

			Feature
	Features		<![if ! IE]> <![endif]>ENGLISH
		Air filters
		Air intake vents
	Control box		Air outlet vents
	Wired Remote Controller		Wired Remote Controller
			(Accessory)
	(Accessory)
	Air outlet vents	Air filters
	Air intake vents	Wired Remote Controller
		(Optional)
	Air inlet vents
	Air outlet vents
		Remote Controller (Accessory)

Installation Tool

Name	Drain hose	Clamp metal	Washer for	Clamp	Insulation for	(Other)
			hanging bracket	(Tie Wrap)	fitting
Quantity	1 EA	2 EA	8 EA	4 EA	1 SET
						• Manual
Shape					for gas pipe
					for liquid pipe
					Installation Manual		3

Safety instructions

Safety instructions

The following symbols are displayed on indoor and outdoor units.

			Read the precautions in this manual care-				This appliance is filled with flammable
			fully before operating the unit.				refrigerant. (for R32)
							This symbol indicates that a service
			This symbol indicates that the Operation				personnel should be handling this
			Manual should be read carefully.				equipment with reference to the
							Installation Manual.

The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or incorrect operation of the appliance. The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below.

!This symbol is displayed to indicate matters and operations that can cause risk. Read the part with this symbol carefully and follow the instructions in order to avoid risk.

!WARNING

This indicates that the failure to follow the instructions can cause serious injury or death.

! CAUTION

This indicates that the failure to follow the instructions can cause the minor injury or damage to the product.

! WARNING

Installation

•Compliance with national gas regulations shall be observed.

•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.

4 Indoor Unit

Safety instructions

• Always install a dedicated circuit and breaker.		<![if ! IE]> <![endif]>ENGLISH
- 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 install, remove, or re-install the unit by yourself (customer).
- There is risk of fire, electric shock, explosion, or injury.
• 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 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.
• 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.
• Have all electric work done by a licensed electrician according to
"Electric Facility Engineering Standard" and "Interior Wire Regulations"
and the instructions given in this manual and always use a special
circuit.
- If the power source capacity is inadequate or electric work is
performed improperly, electric shock or fire may result.
• Always install a dedicated circuit and breaker.
- Improper wiring or installation may cause fire or electric shock.
• The appliance shall be stored in a well-ventilated area where the room
size corresponds to the room area as specified for operation. (for R32)
• Ducts connected to an appliance shall not contain an ignition source.
(for R32)
• The appliance shall be stored in a room without continuously operating
ignition sources (for example: open flames, an operating gas appliance
or an operating electric heater.)
• Keep any required ventilation openings clear of obstruction.

Installation Manual 5

Safety instructions

•Mechanical connections shall be accessible for maintenance purposes.

•To prevent the mixing of different types of refrigerants, be sure to check the type of refrigerant used in the outdoor unit.

Operation

•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.

•Take care to ensure that power cable could not be pulled out or damaged during operation.

-There is risk of fire or electric shock.

•Do not place anything on the power cable.

-There is risk of fire or electric shock.

•Do not plug or unplug the power supply plug during operation.

-There is risk of fire or electric shock.

•Do not touch(operate) the product with wet hands.

-There is risk of fire or electrical shock.

•Do not place a heater or other appliances near the power cable.

-There is risk of fire and electric shock.

•Do not allow water to run into electric parts.

-There is risk of fire, failure of the product, or electric shock.

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

-There is risk of fire or failure of product.

•Do not use the product in a tightly closed space for a long time.

-Oxygen deficiency could occur.

•When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on.

-Do not use the telephone or turn switches on or off. There is risk of explosion or fire.

•If strange sounds, smell or smoke comes from product. Turn the breaker off or disconnect the power supply cable.

-There is risk of electric shock or fire.

•Stop operation and close the window in storm or hurricane.

If possible, remove the product from the window before the hurricane arrives.

-There is risk of property damage, failure of product, or electric shock.

•Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.)

-There is risk of physical injury, electric shock, or product failure.

•When the product is soaked (flooded or submerged), contact an Authorized Service Center.

-There is risk of fire or electric shock.

6 Indoor Unit

Safety instructions

• Be cautious that water could not enter the product.		<![if ! IE]> <![endif]>ENGLISH
- There is risk of fire, electric shock, or product damage.
• Ventilate the product from time to time when operating it together with a
stove, etc.
- There is risk of fire or electric shock.
• Turn the main power off when cleaning or maintaining the product.
- There is risk of electric shock.
• When the product is not be used for a long time, disconnect the power
supply plug or turn off the breaker.
- There is risk of product damage or failure, or unintended operation.
• Take care to ensure that nobody could step on or fall onto the outdoor
unit.
- This could result in personal injury and product damage.
• When mechanical connectors are reused indoors, sealing parts shall
be renewed. (for R32)
• When flared joints are reused indoors, the flare part shall be re-
fabricated. (for R32)
• Periodic ( more than once/year ) cleaning of the dust or salt particles
stuck on the heat exchanger by using water.
• Do not use means to accelerate the defrosting process or to clean,
other than those recommended by the manufacturer.
• Do not pierce or burn refrigerant cycle part.
• Be aware that refrigerants may not contain an odour.

! 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.

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

-Avoid personal injury.

Installation Manual 7

Safety instructions

•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.

•Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment specification. (for R32)

•The appliance shall be stored so as to prevent mechanical damage from occurring.

•Refrigerant tubing shall be protected or enclosed to avoid damage.

•Flexible refrigerant connectors (such as connecting lines between the indoor and outdoor unit) that may be displaced during normal operations shall be protected against mechanical damage.

•The installation of pipe-work shall be kept to a minimum.

•Pipe-work shall be protected from physical damage.

•A brazed, welded, or mechanical connection shall be made before opening the valves to permit refrigerant to flow between the refrigerating system parts.

•Dismantling the unit, treatment of the refrigerant oil and eventual parts should be done in accordance with local and national standards.

Operation

•Do not expose the skin directly to cool air for long periods of time. (Don't sit in the draft.)

-This could harm to your health.

•Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system.

-There is risk of damage or loss of property.

•Do not block the inlet or outlet of air flow.

-It may cause product failure.

•Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.

-There is risk of fire, electric shock, or damage to the plastic parts of the product.

•Do not touch the metal parts of the product when removing the air filter. They are very sharp!

-There is risk of personal injury.

8 Indoor Unit

Safety instructions

• Do not step on or put anything on the product. (outdoor units)		<![if ! IE]> <![endif]>ENGLISH
- There is risk of personal injury and failure of product.
• Always insert the filter securely. Clean the filter every two weeks or
more often if necessary.
- A dirty filter reduces the efficiency of the air conditioner and could
cause product malfunction or damage.
• Do not insert hands or other objects through the air inlet or outlet while
the product is operated.
- There are sharp and moving parts that could cause personal injury.
• Do not drink the water drained from the product.
- It is not sanitary and could cause serious health issues.
• Use a firm stool or ladder when cleaning or maintaining the product.
- Be careful and avoid personal injury.
• Replace the all batteries in the remote control with new ones of the
same type. Do not mix old and new batteries or different types of
batteries.
- There is risk of fire or explosion.
• Do not recharge or disassemble the batteries. Do not dispose of
batteries in a fire.
- They may burn or explode.
• If the liquid from the batteries gets onto your skin or clothes, wash it
well with clean water. Do not use the remote if the batteries have
leaked.
- The chemicals in batteries could cause burns or other health hazards.
• If you eat the liquid from the batteries, brush your teeth and see doctor.
Do not use the remote if the batteries have leaked.
- The chemicals in batteries could cause burns or other health hazards.
• Servicing shall only be performed as recommended by the equipment
manufacturer. Maintenance and repair requiring the assistance of other
skilled personnel shall be carried out under the supervision of the
person competent in the use of flammable refrigerants. (for R32)
• Means for disconnection must be incorporated in the fixed wiring in
accordance with the wiring rules.

Installation Manual 9

Installation

Installation

Selection of the best location (Low Static)

Indoor unit

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 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

Confirm the positional relationship between the unit and suspension bolts.

•Installation the ceiling opening to clean the filter or service under the product.

		(Unit: mm)
Capacity (kBtu/h)	A	B
5/7/9	800	800
12/15/18	800	1 000
21/24	800	1 200

	Top view (Unit: mm)	Inspection hole	Control box
		(600 x 600)
	600 or		600 or
	more	Air outlet
			more

Side view (unit: mm)

Air outlet

H = 20 or more

•Suitable dimension "H" is necessary to get a slope to drain as shown in the figure

B(Min)

A(Min)

Ceiling

Service Space

A

B

10 Indoor Unit

Installation

Selection of the best location (Mid / High Static)

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.

Mid Static				High Static
Top view	Inspection hole(1)			Top view
(unit: mm)				(unit: mm)	Inspection hole(1)
Air inlet vents 600 x 600					(600 x 600)
<![if ! IE]> <![endif]>Inspectionhole(2) 600x 600	Control box				Control box
	1 000		600 or more	600 or	1 000	600 or
600 or	or more			more		more
more					or more
Air outlet vents		Front			Front
Front view (Unit: mm)				Front view

20 or more

H

<![if ! IE]>

<![endif]>ENGLISH

! CAUTION

In case that the unit is installed near the sea, the installation parts may be corroded by salt, The installation parts (and the unit) should be taken appropriate anti-corrosion measures.

[Inspection Hole Standard]

	Number of	Distance between	Remarks
	inspection hole	false ceiling & actual ceiling
	1	More than 100 cm	Sufficient space in the ceiling for servicing.
	2	20 cm to 100 cm	Insufficient space. Difficult for servicing
	Hole size should be more	Less than 20 cm	Minimum height for motor replacement.
	than the size of IDU.

Installation Manual 11