LG PRCKA0 User manual

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.

Visit us at : http://www.lgservice.com

Models: PRCKA0

PRLK048A0

ENGLISH

2AHU 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.

WARNING

CAUTION

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 re-

install 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

•

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.

4AHU Control Kit / EEV Kit

Installation Scene

Signal

Pipe

Thermistor 10

Air flow

Refrigerant flow

(Cooling)

Refrigerant flow

(Heating)

Air Handling Unit

Outdoor Unit

AHU Control Kit(PRCKA0)

AHU EEV Kit(PRLK048A0)

Field piping

Field supply

Multi_V

Field supply

Parts and components

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

Wiring connections

No. Name Remarks

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) 11

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 -

6AHU 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

ENGLISH

Part Description

Control Kit (PRCKA0)

CN-OPTION

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

No. Part Name Quantity(EA)

8AHU Control Kit / EEV Kit

Part Description

EEV Kit(PRLK048A0)

Panel upper

Bracket

Terminal box

Cable gland

Insulator tube

EEV assembly (EEV, Strainer, Tube)

Support tie wrap

Panel base

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.

10 AHU Control Kit / EEV Kit

Before Installation

Selection of Evaporator(Air Handling Unit)

See table below for applicable units

Selecting the capacity setting 'Option PCB'(Accessory) according to the capacity mentioned below.

The corresponding capacity setting '

Option

PCB' needs to be selected depending on the need

capacity.

- After checking the need capacity, remove the 36k

Option

PCB equipped in the main PCB,

and set up the

Option

PCB fitted the need capacity in the main PCB.

CAUTION

Saturated Suction Temperature (SST) = 6°C, SH (Superheat) = 5K, Air Temperature = 27°C DB / 19°C WB.

(Main PCB)

EBR52358907 28K 0.88~1.08 7 ~ 9 22 ~ 26

EBR52358908 36k 0.88~1.08 9 ~11 25 ~ 32

EBR52358909 42k 0.88~1.08 11~ 13 31 ~ 35

EBR52358910 48k 1.23~1.51 13 ~ 16 33 ~ 45

EBR52358911 76k 1.93~2.35 20 ~ 24 50 ~ 64

EBR52358912 96k 1.93~2.35 25 ~ 31 64 ~ 72

Option PCB

P/No Capacity

(Btu/h)

Allowed heat

exchanger

Volume (dm3)

Allowed heat

exchanger capacity

(kW)

Air flow rate

(CMM)

Capacity setting

'Option PCB'

Detail

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