LG PRCKA1 User guide

P/NO : MFL50024808

www.lg.com

INSTALLATION MANUAL

AHU COMMUNICATION KIT

• 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.

MODEL : PRCKA1

ENGLISH

• 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 equipment.

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

• 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.

• 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 :

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

TIPS FOR SAVING ENERGY

TIPS FOR SAVING ENERGY

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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.

• Installation must conform with local building codes or, in the absence of local codes.

• 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.

Installation

• Always perform grounding.

- Otherwise, it may cause electrical shock.

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

- Otherwise, it may cause fire or electrical shock.

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

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

• Securely attach the electrical part cover to AHU Comm. Kit.

- If the electric part cover of AHU Comm. Kit is 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 equipment.

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

• Do not install, remove or reinstall the unit by yourself.

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

• Do not disassemble or repair the product randomly.

- It will cause a fire or electrical shock.

• Do not install the product in a place where there is the concern of falling down.

- Otherwise, it may result in personal injury.

• Use caution when unpacking and installing.

- Sharp edges may cause injury.

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!

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IMPORTANT SAFETY INSTRUCTIONS

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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 cord randomly.

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

• 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 flames away.

- Otherwise, may occur 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 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.

• Be cautious that water could not enter the product.

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

• 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.

IMPORTANT SAFETY INSTRUCTIONS

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5

2 TIPS FOR SAVING

ENERGY

3 IMPORTANT SAFETY

INSTRUCTIONS

6 INSTALLATION SCENE

7 SUPPLIES

8 OPTIONAL ACCES-

SORIES

9 PART DESCRIPTION

9 Communication Kit (PRCKA1)

10 BEFORE INSTALLATION

13 COMMUNICATION KIT

INSTALLATION

13 Mechanical installation

14 Electric Wiring Work

15 Electrical Work

16 Electric Wiring Work

17 Dry contact connection_optional

accessory

18 FAN Signal Wiring Concept

19 THERMISTORS INSTAL-

LATION

19 Pipe thermistors Installation

22 TROUBLESHOOTING

TABLE OF CONTENTS

TABLE OF CONTENTS

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6

INSTALLATION SCENE

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Parts and components

No. Name Remarks

1 Air Handling Unit Field supply
2 Outdoor Unit Multi V
3 AHU Communication Kit(PRCKA1) ­4 AHU EEV Kit(PRLK048A0/PRLK096A0) ­5 Field piping Field supply

Wiring connections

6 Communication Kit Wiring

Power supply and communication

between comm. kit and outdoor unit

7

Pipe thermistors

(EBG61287703/EBG61287704)

Temp. sensing for refrigerant pipe

8 Room thermistor (EBG36949303) Temp. sensing for room temp.

9

Remote controller(PQRCVSL0

/ PQRCVSL0QW)

Optional accessory

10 Dry contact(PQDSBNGCM1) Optional accessory

CAUTION

For Installation of Room thermistor (No. 8), always install that to the inlet of Heat Exchanger.
Otherwise, it may cause to be not operating properly.

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INSTALLATION SCENE

Signal
Pipe
Thermistor
Air flow

Refrigerant flow
(Cooling)

Refrigerant flow
(Heating)

8

1

9

3

7

4

5

10

6

2

SUPPLIES

7

ENGLISH

PRCKA1

Compo-

nents

AHU Comm.

Kit

Room

thermistor

Pipe

thermistors

Installation

Manual

Bracket Option PCB

P/NO

AJT57850904 EBG61106821

EBG61287703(In)

EBG61287704(Out)

MFL50024808 MAZ49398901

EBR52358907

~17

Shape

P/NO : MFL50024808

www.lg.com

INSTALLATION MANUAL

AHU COMMUNICATION KIT

• 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.

MODEL : PRCKA1

Quanti-

ty(EA)

1 1 2(Each 1) 1 4 11(Each 1)

Model

Name

Weight (kg) Dimension (mm)

POWER

NET Gross

NET Gross

W H D W H D

PRCKA1 2.7 4.0 280 135 280 420 179 394

220-240 V~ 50 Hz

220 V~ 60 Hz

SUPPLIES

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H

W

D