LG PRLK048A0 INSTALLATION INSTRUCTIONS

LG AHU Control Kit / EEV Kit

Installation Manual

IMPORTANT

• 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.

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Models: PRCKA0

PRLK048A0

ENGLISH

2 AHU Control Kit / EEV Kit

AHU Control Kit / EEV Kit Installation Manual

TABLE OF CONTENTS

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

■ Installation Scene...............................................................4

■ Supplies..............................................................................5

■ Optional Accessories.........................................................6

■ Part Description..................................................................7

■ Control Kit (PRCKA0).................................................................................7

■ EEV Kit(PRLK048A0).................................................................................8

■ Before Installation..............................................................9

■ EEV Kit Installation..........................................................11

■ Mechanical installation........................................................................11-12

■ Brazing work .......................................................................................13-14

■ Electrical work ..........................................................................................15

■ Control Kit Installation......................................................16

■ Mechanical installation.............................................................................16

■ Electric wiring work.............................................................................17-19

■ Dry contact connection_optional accessory............................................20

■ Thermistors Installation ...................................................21

■ Pipe thermistors installation................................................................21-23

■ Room thermistor.......................................................................................24

■ Test Operation..................................................................25

■ Troubleshooting................................................................26

Safety Precautions

Installation Manual 3

ENGLISH

■ Installation

Safety Precautions

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

■ 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.

Be sure not to do.

Be sure to follow the instruction.

WARNING

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

Center.

• There is risk of fire or electric shock.

Be cautious that water could not enter the product.

• There is risk of fire, electric shock, or product damage.

■ Operation

Use the correctly rated breaker or fuse.

• There is risk of fire or electric shock.

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

(customer).

• There is risk of fire, electric shock, explosion, or injury.

For installation, always contact the dealer or an

Authorized Service Center.

• There is risk of fire, electric shock, explosion, or injury.

Don't touch with the hands while the power is on

•

There is risk of fire or electric shock.

Use standard parts(connector).

•

Do not disassemble or repair the product. 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.

WARNING

CAUTION

4 AHU Control Kit / EEV Kit

Installation Scene

1 2 3 4 5

Air Handling Unit

Outdoor Unit

AHU Control Kit(PRCKA0)

AHU EEV Kit(PRLK048A0)

Field piping

Field supply

Multi_V

Field supply

Parts and components

6 7 8 9

Control kit wiring

Pipe thermistors (EBG36949304/EBG36949305)

Room thermistor (EBG36949303)

Remote controller(PQRCUSA0)

Dry contact PCB(PQDSBNGCM0)

(Power supply and communication between control kit and outdoor unit)

Evaporator (In/Out) control of Air Handling Unit

Return air control

Optional accessory Optional accessory

Wiring connections

No. Name Remarks

Signal Pipe Thermistor Air flow

Refrigerant flow (Cooling)

Refrigerant flow (Heating)

Installation Manual 5

ENGLISH

Supplies

Components

Quantity(EA) 1 1 2(Each 1) 1 5(Each 1)

AHU Control Kit Room thermistor Pipe thermistors

Installation

manual

Capacity setting

option PCB

AJT57850901 EBG36949303

EBG36949304(black) EBG36949305 (red)

MFL50024801

EBR52358907/09 /10/11/12

P/NO

Shape

PRCKA0

Components

Quantity(EA)

AHU EEV Kit Installation manual

AJT57850801 MFL50024801

P/NO

Shape

PRLK048A0

Model Name

Weight(kg) Dimension(mm)

POWER

NET Gross W H D

PRCKA0 2.2 3.6 280 135 280 220~240V/50Hz/1Phase

PRLK048A0 3.1 3.6 404 83 217 -

6 AHU Control Kit / EEV Kit

Optional Accessories

Components Remote controller Dry contact PCB

PQRCUSA0 PQDSBNGCM0

Model name

Shape

Accessories

* For further details of the accessories, refer to the manual provided at the time of purchasing the

accessories.

Installation Manual 7

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Part Description

Control Kit (PRCKA0)

1 2 3 4 5 6 7 8

9 10 11 12

Plastic (+) bolt

Control box cover

Main PCB

Option PCB(36k)

Main PCB case

Terminal block (communication)

Terminal block (POWER Supply)

Panel Support Tie wrap Control box case

Cable gland(2type)

Bracket

4 1 1 1 1 1 1 1 8 1 8 4

No. Part Name Quantity(EA)

CN-OPTION

8 AHU Control Kit / EEV Kit

Part Description

EEV Kit(PRLK048A0)

1 2 3 4 5 6 7 8

Panel upper

Bracket

Terminal box

Cable gland

Insulator tube

EEV assembly (EEV, Strainer, Tube)

Support tie wrap

Panel base

1 2 1 2 1 1 1 1

No. Part Name Quantity(EA)

Installation Manual 9

ENGLISH

Before Installation

■ Don't install or operate the unit in rooms mentioned below. Where mineral oil, like cutting oil is present. Where the air contains high levels of salt such as air near the ocean. Where sulphurous gas is present such as that in areas of hot spring. In vehicles or vessels. Where voltage fluctuates a lot such as that in factories. Where high concentration of vapor spray are present. Where machines generating electromagnetic waves are present. Where acidic or alkaline vapor is present. The option boxes must be installed with entrances downward.

CAUTION

■ Check the mentioned below, when you apply the AHU(Field supply). If the AHU (Field supply) provided in the field is exclusively for heating, you must not change the operating mode to cooling on the remote controller. If not, it can cause electric shock, injury or death. If you want to operate in cooling mode, AHU (Field supply) must comply with the following details. (Following)

- The insulation level of AHU (Field supply) motor must be ‘F’ or above, and the protection

level must satisfy ‘IP 54’.

- AHU (Field supply) must have the drain pan installed. Fan speed button on the wired remote controller(PQRCUSA0) is not operated. For refrigerant piping of outdoor unit, refer to the installation manual supplied with the

outdoor unit. For installation of the wired remote controller(PQRCUSA0), refer to the manual supplied

with the wired remote controller. For connection of the Dry contact PCB(PQDSBNGCM0), refer to the manual supplied with

the Dry contact PCB(PQDSBNGCM0).

■ AHU Control Kit Thermistor cable and remote controller wire should be located at least 50mm away from

power supply wires and from wires to the controller. Not following this guideline may result in malfunction due to electrical noise.

Use only specified wires, and tightly connect wires to the terminals. Keep wiring in neat order so that it does not obstruct other equipment. Incomplete connections could result in overheating, and in worse case electric shock or fire.

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