LG ARNU243NJA2 INSTALLATION MANUAL

INSTALLATION MANUAL

AIR CONDITIONER

<![if ! IE]>

<![endif]>ESPAÑOL FRANÇAIS ENGLISH

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.

Vertical Air Handling Unit

http://www.lghvac.com

www.lg.com

P/NO : MFL65003102

Copyright © 2010 - 2018 LG Electronics Inc. All Rights Reserved.

IMPORTANT!

Please read this instruction sheet completely before installing the product.

This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently.

WARNING

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

Installation of all field wiring and components MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code 70 and the National Building Construction and Safety Code or Canadian Electrical code and National Building Code of Canada.

•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.

CAUTION: Improper installation, adjustment, alteration, service or maintenance can void the warranty. The weight of the condensing unit requires caution and proper handling procedures when lifting or moving to avoid personal injury. Use care to avoid contact with sharp or pointed edges.

Safety Precautions

•Always wear safety eye wear and work gloves when installing equipment.

•Never assume electrical power is disconnected. Check with meter and equipment.

•Keep hands out of fan areas when power is connected to equipment.

•R-410A causes frostbite burns.

•R-410A is toxic when burned.

NOTE TO INSTALLING DEALER: The Owners Instructions and Warranty are to be given to the owner or prominently displayed near the indoor Furnace/Air Handler Unit.

Special warnings

When wiring:

Electrical shock can cause severe personal injury or death. Only a qualified, experienced electrician should attempt to wire this system.

•Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.

•Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.

•Ground the unit following local electrical codes.

•Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.

• The choice of materials and installations must comply with the applicable local/national or international standards.

When transporting:

Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your finger.

When installing...

... in a wall: Make sure the wall is strong enough to hold the unit's weight.

It may be necessary to construct a strong wood or metal frame to provide added support.

... in a room: Properly insulate any tubing run inside a room to prevent "sweating" that can cause dripping and water damage to wall and floors.

... in moist or uneven locatinons: Use a raised concrete pad or concrete blocks provide a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.

... in an area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.

... in a snowy area(for Heat Pump Model): Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.

When connecting refrigerant tubing

•Keep all tubing runs as short as possible.

•Use the flare method for connecting tubing.

•Check carefully for leaks before starting the test run.

When servicing

•Turn the power OFF at the main power box(mains) before opening the unit to check or repair electrical parts and wiring.

•Keep your fingers and clothing away from any moving parts.

•Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced.

2 Vertical Air Handling Unit

Vertical Air Handling Unit Installation Manual

TABLE OF CONTENTS

Installation Requirements
Features.....................................	4
Accessories ..............................	4
Duct Connection Dimensions ...	5
Safety Precautions ...................	6
Installation.................................	8
Selection of the best location....	8
Upflow Installation ....................	9
Duct work................................	10
Horizontal-left Installation .......	11
Connecting Pipes to the Indoor
Unit .........................................	12
Preparation of Piping..............	12
Plumbing materials and storage
methods..................................	14
Insulation ................................	16
Condensate Drain...................	17
Wiring Connection ..................	19
Electric Heater........................	22
Dip Switch Setting of Indoor unit
PCB ........................................	23
Group Control Setting.............	24
Product Data ...........................	28
External Static Pressure & Air
Flow........................................	28
Minimum airflow by heater
capacity ..................................	29
Electric Heater Static pressure
drop factors.............................	29
Air Filter (Field supply) Static
pressure drop factors..............	30

Required Parts

οFour type "A" screws

οPipes: Gas side

Liquid side (Refer to

Product Data)

οInsulation materials

οAdditional drain pipe

Required Tools

οLevel gauge

οScrew driver

οElectric drill

οHole core drill

οHexagonal wrench

οGas-leak detector

οVacuum pump

οGauge manifold

οOwner's manual

οThermometer

οElectric Heater installation manual

<![if ! IE]>

<![endif]>ENGLISH

Installation Manual 3

Feature

Features

Wiring knockouts for conduit

Wiring knockouts for conduit

Refrigerant connections

Drain connections for horizontal application

Filter access	Drain connections for
	upflow application

Accessories

	Accessory	Model Name
	Wired remote controller	PQRCVSL0 (Black Color)
		PQRCVSL0QW (White Color)
	Wireless remote controller	PQWRCDF0 (Cooling only)
		PQWRHDF0 (Heat pump)
		ANEH053B1
	Electric heater	ANEH103B2
		ANEH153B2
		ANEH203B2

4 Vertical Air Handling Unit

		Feature
Duct Connection Dimensions		<![if ! IE]> <![endif]>ENGLISH
	<Top>
Refrigerant	Drain
connections
	connections
	for upflow
Drain connections	application
for horizontal
application
Air filter cover	<Front>	<Side-right>

<Bottom>

(Unit: inch(mm))

					Dimensions					Wiring		Refrigerant
										Knock out
												Connections
	Capacity
		A	B	C						I	J	Pipe size
	(kBtu/h (RT))
					D	E	F	G	H
		Height	Width	Depth						Power	Commu	Liquid	Gas
											nication
	12(1.0)	48-5/8	18	21-3/8	1-9/16	17-1/2	20	17	12-1/8	1-11/16	7/8	1/4	1/2
	18(1.5)	(1236)	(457)	(540)	(40)	(445)	(530)	(432)	(308)	(43)	(22)	(6.35)	(12.7)
	24(2.0)	48-5/8	18	21-3/8	1-9/16	17-1/2	20	17	12-1/8	1-11/16	7/8	3/8	5/8
	30(2.5)
		(1236)	(457)	(540)	(40)	(445)	(530)	(432)	(308)	(43)	(22)	(9.52)	(15.88)
	36(3.0)
	42(3.5)	55-1/8	25	21-3/8	1-9/16	24-1/2	20	24	12-1/8	1-11/16	7/8	3/8	5/8
	48(4.0)
		(1401)	(635)	(540)	(40)	(623)	(530)	(610)	(308)	(43)	(22)	(9.52)	(15.88)
	54(4.5)

Installation Manual 5

Safety Precautions

Safety Precautions

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

νBe sure to read before installing the air conditioner.

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

νIncorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

This symbol indicates the possibility of death or serious injury.

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

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

Be sure not to do.

Be sure to follow the instruction.

Installation

•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.

•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.

6 Vertical Air Handling Unit

Safety Precautions

•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 store or use flammable gas or combustibles near the product. - There is risk of fire or failure of product.

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.

•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.

•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.

•Safely dispose of the packing materials.

-Packing materials, such as nails and other metal or wooden parts, may cause stabs or other injuries.

-Tear apart and throw away plastic packaging bags so that children may not play with them. If children play with a plastic bag which was not torn apart, they face the risk of suffocation.

<![if ! IE]>

<![endif]>ENGLISH

Installation Manual 7

Installation

Installation

Selection of the best location

•Where optimum air distribution can be ensured.

•Where nothing blocks air passage and install the duct work.

•Where condensate can be properly drained.

•Where the ceiling is strong enough to bear the indoor unit weight.

•Where the false ceiling is not noticeably on an incline.

•Where sufficient clearance for maintenance and service can be ensured.

•Where piping between indoor and outdoor units is possible within the allowable limit. Refer to the installation manual for the outdoor unit.

•Vertical Air Handling Unit can be installed for upflow and horizontal-left positions.

More than 350(13-25/32)

More than 600(23-5/8) clearance from access panels for Service

More than	More than
250(9-27/32)	250(9-27/32)

More than	Unit: mm (inch)
350(11-25/32)

NOTE : The primary and secondary drain line must be trapped to allow proper drainage of condensate water, If the secondary drain line is not used, it must be capped.

In the case of sea coast installation, salt residue may cause corrosion of cabinet and component parts. Please take appropriate anti-corrosion measures.

8 Vertical Air Handling Unit

Installation

Upflow Installation

• Position unit for plenum installation.					<![if ! IE]> <![endif]>ENGLISH
• The plenum should be secured in order to support the installation of adapter callers accommodate the
installation of any duct work.
• Seal all duct work according to local codes to prevent air leakage. Ensure that filter access is unob-
structed.
• The air handler support platform should be sturdy enough to support the cabinet plus any accessory
components including filter box.
• The minimum height clearance is 14inches(350mm) to maintain proper air flow.
• Vibration isolators (purchased locally) must be placed between the unit and the pedestal.
• An illustration showing an example of where a vibration isolator should be added would clarify what
the installing contractor should do to properly position the isolator.
				Field Supplied
				Supply Duct

Field

Supplied Return

Plenum

More than 1inch (25mm)

More than 6 screws (M4*25L)

Do not connect the screws on Front and Rear side, it may cause the filter can not be mounted.

Installation Manual 9

Installation

Duct work

•Over 10 screws should be used for joining supply duct with the unit.

•To prevent vibration transmission, exploit flexible connectors between duct and the unit. It is mandatory that the flexible connector between unit and duct at discharge connection should be made off heat resistive material when electric heater is installed.

•Duct work must be insulated and covered with vapor barrier when routed through unconditioned space.

•Internal acoustical insulation lining may necessary for the metal duct system if it do not have 90° elbow and 10ft. of main duct to first branch takeoff.

•It is advised that a fibrous duct work could be used as a substitute if built and installed in accordance with the most recent edition of SMACNA construction standard on fibrous glass ducts.

•Collectively fibrous duct work and acoustical lining shall obey National Fire Protection Association standards 90A or B as tested by UL standard 181 for class 1 air ducts.

•Seal around the delivery duct subsequent to when the duct is secured so that to facilitate prevention of air leakage.

More than 10 screws (M4*25L)

10 Vertical Air Handling Unit