LG PAHCNM000 Installation guide

OWNER’S &

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.

Applied(AHU)

AHU CONTROL KIT

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

www.lg.com

MFL71386003

Rev.02_052220

ENGLISH

ESPAÑOL

FRANÇAIS

DEUTSCH

PORTUGUÊS

2

SAFETY INSTRUCTIONS

ENGLISH

WARNING

• Installation or repairs made by unqualified persons can result in

hazards to you and others.

• 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

• 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.

!

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.

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.

!

SAFETY INSTRUCTIONS

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.

SAFETY INSTRUCTIONS

3

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• Securely attach the electrical part cover to AHU Communication

Kit.

- If the electric part cover of AHU Communication Kit is not

attached securely, it could result in a fire or electric shock due

to dust, water, etc.

• 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.

• Always ground the product.

- There is risk of fire or electric shock.

• Do not install the product on a non-parallel or defective

installation stand.

- It may cause injury, accident, or damage to the product.

Operation

• Keep flames away.

- Otherwise, may occur a fire.

• 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.

• Be cautious that water could not enter the product.

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

damage.

4

SAFETY INSTRUCTIONS

ENGLISH

• 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.

CAUTION

Installation

• Do not install the product direct sunlight.

• Do not insert a drain hose in drain or soil pipe.

- Bad smells can occur and it results in a corrosion of a heat

exchanger or pipe.

Operation

• If anyone other than a licensed Professional installs, repairs, or

alters LG Electronics Air Conditioning Products, the warranty is

voided.

- All costs associated with repair are then the full responsibility of

the owner.

• This appliance is not intended for use by persons (including

children) with reduced physical, sensory or mental capabilities, or

lack of experience and knowledge, unless they have been given

supervision or instruction concerning use of the appliance by a

person responsible for their safety.

- Children should be supervised to ensure that they do not play

with the appliance.

!

TABLE OF CONTENTS

5

ENGLISH

2 SAFETY INSTRUCTIONS

6 INSTALLATION LAYOUT

6 Installation composition diagram

6 Caution on installation layout

7 PRODUCT DIMENSION

7 Product Measurements

8 PARTS LAYOUT

9 WIRING DIAGRAM

10 AHU CONTROL KIT INSTALLATION

10 Determining the product's mounting location

11 Things to keep in mind when installing outdoors

12 Sensor Cover Installation (outdoors)

13 AHU CONTROL KIT SETTINGS

13 Check Module Conﬁguration

15 PIPE THERMISTOR CONNECTION

16 OUTDOOR UNIT COMMUNICATION LINE CONNECTION

16 Cautions on connecting the EEV module (communication module) with outdoor unit

16 Capacity Control Communication Cable Connection

17 INSTALLATION AND WIRING METHOD (OPTIONAL)

17 Installation method when adding EEV module

17 Wiring method when adding EEV module.

18 AHU SENSOR SPECIFICATION

20 AHU SENSOR CONNECTION

20 Sensor connection

25 Electrical Wiring (if using a belt driven fan)

26 Connect the electric wires

27 Things to keep in mind when installing the Control Kit on site

28 HMI SETTINGS

28 HMI Settings

45 Self-Diagnosis

TABLE OF CONTENTS

6

INSTALLATION LAYOUT

ENGLISH

RA

ῧ-1

Ῡ-1

Ὺ

Ῡ-2

ῧ-2

ῡ

ῤ

ῦ

ῥ

ῢ

Ύ

Ῠ-1 Ῠ-2

EA OA SA

Power cable

Communication cable

Thermistor signal

Temperature /

humidity sensor

MCC

No. Item Applied Standards

①

AHU -

②

AHU CONTROL KIT PAHCNM000

③

Expansion kit -

④

Outdoor unit MULTI V

⑤

Pipe in Thermistor(Liquid)

Sensor : Ø 5(NTC 5 kΩ), Length : 5 m, Cable color : Black

⑥

Pipe out Thermistor(Gas)

Sensor : Ø 7(NTC 5 kΩ), Length : 5 m, Cable color : Red

⑦-1, 2

Temperature/humidity sensor RA, SA Optional

⑧-1, 2

Ventilation Fan, Supply Fan -

⑨-1, 2

Inverter drive kit -

⑩

Main power switch board MCC switch board panel

⑪

HMI -

Caution on installation layout

- MCC is part of the installation construction to be performed by the equipment supplier, so

confer with the supplier before installing the product.

- Temperature/humidity sensors must be installed on the SA (supply)/RA(ventilation) ducts before

the product can run normally.

INSTALLATION LAYOUT

Installation composition diagram

PRODUCT DIMENSION

7

ENGLISH

8-Ø7 Holes

DW

C

A

B

(Front)(Side) (Back)

(Bottom)

Model PAHCNM000

Size Product

W mm 500

D mm 210

H mm 500

Enclosure

Color RAL 7035

Material Steel

Power 220-240 V~, 50/60 Hz

Rated current 0.2 A

Product Operating

Environment Conditions

Operating Temperature -20 ~ 65 °C DB

Humidity 0 ~ 98 %

Use the appropriate flexible tubing and connectors for the corresponding holes.

Classification Spec Description

W (mm) 500 Width

H (mm) 500 Height

D (mm) 210 Depth

A (mm) 552

Distance between wall mounting brackets

B (mm) 486

C 22.5Ø Hole(10 EA) Power cable, Sensor/Communication line insert part

PRODUCT DIMENSION

Product Measurements

8

PARTS LAYOUT

ENGLISH

10

1

8

7

11

2 3 4 5 6

9

• PAHCNM000

No. Main module Spec Qty. No. Main module Spec Qty.

①

Main module DC 12 V 1

⑦

NFB(No Fuse

Breaker)

15 A 1.5 kA 1

②

UI module DC 12 V 1

⑧

Adaptor

220 V → DC 12 V

1

③

UO module DC 12 V 1

⑨

Trans

220 V → AC 24 V

1

④

EEV module #1 DC 12 V 1

⑩

Terminal Block 15 PIN 1

⑤

EEV module #2 DC 12 V 1

⑪

Terminal Block

Single phase

220 V~, 60 Hz

1

⑥

EEV module #3 DC 12 V 1

PARTS LAYOUT

WIRING DIAGRAM

9

ENGLISH

CAUTION

!

• In order to use the main module's shutdown, heating/cooling, and fire detection functions,

the main module's +12V terminal should be connected to the DCOM terminal. Failure to

do so could result in the malfunctioning of the product.

• In order to use the UI module's emergency shutdown and differential pressure switch

functions, the UI module's +12V terminal should be connected to the DCOM terminal.

Failure to do so could result in the malfunctioning of the product.

WIRING DIAGRAM

• PAHCNM000

10

AHU CONTROL KIT INSTALLATION

ENGLISH

- When using wall mount brackets, fasten the brackets to

the four holes on the rear of the enclosure.

- Please use the provided bolts, nuts, and washers to

fasten the brackets.

CAUTION

!

• When installing the control kit, make sure to leave at least 900 mm between the wall and

the product case so there is enough room for servicing and installation.

• After mounting the product, check whether it is properly affixed.

• If the control kit has to be installed outdoors, be sure to also install an enclosure.

• When installing load devices such as AHU sensors and dampers outdoors, fitted covers

must also be mounted to protect them from the effects of the external environment.

2626

486

552

AHU CONTROL KIT INSTALLATION

Determining the product's mounting location

- The control kit's mounting location should be determined based on the conditions on site.

When mounting the control kit, use Ø 6 direct screws (8 EA).

AHU CONTROL KIT INSTALLATION

11

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CAUTION

!

Exposure to direct sunlight could raise the temperature inside the control kit and cause the

unit to malfunction.

AHU

Control

kit

Additional

enclosure

Things to keep in mind when installing outdoors

- Enclosures should be purchased separately if needed.

- After mounting the product, check the tightness of the connection between the AHU and the

enclosure.

If the connection is not airtight, moisture or dust could contaminate the product.

- When installing the AHU outdoors, be sure to use an enclosure to protect the control kit.

- The enclosure should be made of SUS or painted sheet metal to prevent corrosion.

- Make the structure so that it is easy to perform wiring tasks.

- The installation form and location may vary by site.

- Panels installed outdoors must be installed in a place that is not exposed to direct sunlight.

12

AHU CONTROL KIT INSTALLATION

ENGLISH

RA EA OA

EA OA

SA

RA SA

CAUTION

!

• When installing a sensor outdoors, make sure to install the protective cover, at which time

the Safety Grade must be IP 56 or higher. If the cover is not installed, rainwater can flood

the sensor, causing it to malfunction.

Sensor Cover Installation (outdoors)

When installing the AHU outdoors, make sure to install the protection box as shown below.

Ex: Installation of a temperature and temperature/humidity sensor covers.

Ex: Installation of a damper actuator cover.

AHU CONTROL KIT SETTINGS

13

ENGLISH

- After installing the Control Kit, the first thing

you should do is check the module settings

inside the Control Kit.

The DIP switches for the main module, UI

module, and UO module are configured in

the following order.

- The default setting of the DIP switches for

the main module, UI module, and UO

module is OFF. Do not change the settings

arbitrarily.

Main Module

UI Module

UO Module

EEV Module

The default setting for all DIP switches is OFF. (factory condition)

(Main Module)

UO Module

(UO Module)

UI Module

Main Module

(UI Module)

AHU CONTROL KIT SETTINGS

Check Module Conﬁguration

14

AHU CONTROL KIT SETTINGS

ENGLISH

EEV Module

(EEV Module)

Capacity Settings

Use DIP switch SW1 to set the capacity.

* When connecting a high-capacity EEV kit (PRLK396A0, PRLK594A0), set the capacity to

56.4 kW.

Address Setting

DIP switch SW2 is the address setting function. When the product is shipped from the factory,

the addresses are set as follows.

EEV #1,2,3 are included and EEV #4,5,6 are optional.(After purchasing separately, additional

setting required.)

SW1

1234Capacity [kW (kBtu/h)]

OFF OFF OFF OFF 2.1 (7)

OFF OFF OFF ON 2.5 (9)

OFF OFF ON OFF 3.5 (12)

OFF OFF ON ON 5.6 (18)

OFF ON OFF OFF 7.1 (24)

OFF ON OFF ON 8.2 (28)

OFF ON ON OFF 10.6 (36)

OFF ON ON ON 12.3 (42)

ON OFF OFF OFF 14.1 (48)

ON OFF OFF ON 22.4 (76)

ON OFF ON OFF 28.0 (96)

ON OFF ON ON 33.6 (115)

ON ON OFF OFF 39.2 (134)

ON ON OFF ON 44.8 (153)

ON ON ON OFF 50.5 (172)

ON ON ON ON 56.4 (192)

Sequence

SW2

Address Remark

1 2 3 4

EEV #1 OFF OFF OFF

OFF

Internal address 0

EEV #1,2,3

Included

EEV #2 OFF OFF ON Internal address 1

EEV #3 OFF ON OFF Internal address 2

EEV #4 OFF ON ON Internal address 3

EEV #4,5,6 Optional :

Additional setting required

EEV #5 ON OFF OFF Internal address 4

EEV #6 ON OFF ON Internal address 5

PIPE THERMISTOR CONNECTION

15

ENGLISH

AHU

Flexible Tube and Connector: Ø 16 (supplied on the site)

Pipe Temperature Sensor IN : Ø 5, Length: 5m, Color: Black

Pipe Temperature Sensor OUT : Ø 7, Length: 5m, Color: Red

Pipe out Thermistor

Pipe in Thermistor

- Connect the flexible tube and connector (Ø16, installed on the site) from the AHU to the Control

Kit.

- Connect the pipe IN and OUT Thermistor in the EEV module connector.

PIPE THERMISTOR CONNECTION

- Check the IN/OUT of the pipe thermistor connected to the AHU

16

OUTDOOR UNIT COMMUNICATION LINE CONNECTION

ENGLISH

Connect

CEN B, CEN A

Connect

CEN B, CEN A

Connect

CEN B, CEN A

Outdoor

Unit #1

Outdoor

Unit #2

CH3 A+

CH3 B-

Outdoor

Unit #3

CAUTION

!

• The AHU Control Kit can control the temperature of the supply air by connecting to up to

three outdoor units. When connecting outdoor units, the communication addresses should

be set from 1 to 3, sequentially.

Otherwise, the supply air temperature control function may not work properly.

• Make sure the polarity of the power supply connector is correct when connecting the

communication cable between the Control Kit and outdoor unit.

Capacity Control Communication Cable Connection

- In order to control the SA temperature in the control kit, the central control communication line

must be additionally connected. Please refer to the wiring diagram and the figure below for

details.

- For models without a central control communication modem, a central control communication

modem must be installed separately to control the supplied air's temperature.

OUTDOOR UNIT COMMUNICATION LINE

CONNECTION

Cautions on connecting the EEV module (communication

module) with outdoor unit

- The Control Kit comes mounted with three EEV

modules, and each EEV module can be connected to

one Expansion Kit.

If additional EEV modules are required depending on

the number of outdoor units, they must be purchased

separately and installed.

- Make sure the communication cables of each outdoor

unit and pipe thermistor wires of Expansion Kit are

not mixed when connecting the outdoor units.

CH2 A+

IDU B

IDU A

CH2 B-

INSTALLATION AND WIRING METHOD (OPTIONAL)

17

ENGLISH

CAUTION

!

• When adding more than one EEV module, check if the power and communication cables

are connected correctly.

Otherwise, the product will not work properly.

• After adding EEV module, set the SW2 address. Otherwise, the product will not work

properly.

• Inverter Drive kit’s BUS A and B must be wired in the last EEV add-on module.

1. Pull the supporter of the EEV module to

both sides.

2. Using holes inside of AHU CONTROL KIT,

M4 screws(2EA) and extended supporter’s

holes for Installation.

RS485 BUS A

(Inverter Drive kit)

RS485 BUS B

(Inverter Drive kit)

12 V12 V12 V

GNDGNDGND

Main module

Wiring method when adding EEV module.

INSTALLATION AND WIRING METHOD

(OPTIONAL)

Installation method when adding EEV module

Ex : Installation method when additional EEV module required.

18

AHU SENSOR SPECIFICATION

ENGLISH

Item Specification

Damper Actuator

- Power: AC 24 V

- Input/output signal: DC 0~10 V

- Torque: 15 N·m

- Operation time: 150 s.

- Rotation Angle: 90˚

Temperature/Humidity

Sensor

- Power: AC 24 V

- Output signal: DC 0~10 V

- Temperature range: -40 °C~70 °C

- Humidity range: 0~95 % RH

Thermistor

- Power: AC 24 V

- Output signal: DC 0~10 V

- Temperature range: -50 °C~50 °C

Filter Differential Sensor

- Power: AC 24 V

- Output signal: DC 0~10 V

- Range: 0~1 000 Pa

- Switch type: Relay open/close

Static Pressure Sensor

- Power: AC 24 V

- Output signal: DC 0~10 V

- Range: 0~1 000 Pa

CO

2

sensor

- Power: AC 24 V

- Output signal: DC 0~10 V

- Range: 0~2 000 ppm

Smoke Detector

- Power: AC 24 V

- Type: Contact

CAUTION

!

• Our AHU doesn't support resistance-type sensors. Using an resistance-type sensor can

cause a discrepancy between the actual temperature and measured temperature, which

can cause the product to malfunction.

• Please install a voltage-type sensor as shown above.

• Sensors and actuators are sold separately. Purchase and install the required sensors based

on the load or function.

• In order to operate normally, either a THERMISTOR or a humidity sensor must be installed.

AHU SENSOR SPECIFICATION

Sensor/Actuator Spec.

Standard specifications of the sensor used in the control kit are as follows.

AHU SENSOR SPECIFICATION

19

ENGLISH

Thermistor

(Optional)

Filter Differential Sensor

(Optional)

Humidiﬁcation valve

(Optional)

Damper actuator(Optional)

Temperature/humidity

sensor(Optional)

RA EA OA SA

Temperature/

humidity

sensor(Required)

Static Pressure Sensor

(Optional)

Thermistor

(Optional)

Thermistor

(Optional)

Temperature/humidity

sensor(Required)

CO

2

sensor

(Optional)

Smoke Detector

(Optional)

Sensor installation location

CAUTION

!

• The AHU may not start or function properly if the sensor is not installed in the location

specified in the picture above.

• Temperature/humidity sensors must be installed on the SA (supply)/RA(ventilation) ducts

before the product can run normally. The AHU can have an error or may not start if the

sensor is not installed.

20

AHU SENSOR CONNECTION

ENGLISH

Ex: SA (Supply) Temperature/Humidity Sensor Connection

1. For more information on the installation of temperature/humidity sensors, refer to the

Manual that came with the sensor.

2. Make sure to finish all the sensor wires with a flexible tube.

3. Using a temperature/humidity sensor outside the temperature range different from the

above specifications can cause the unit to malfunction. However, the temperature range

can be adjusted in HMI Settings.

Item Specification Remark

Temperature/humidity

sensor

- Power: AC 24 V

- Output signal: DC 0~10 V

- Temperature range: -40 °C~70 °C

- Humidity range: 0~95 % RH

Optional

CAUTION

!

• Improper wiring of the sensor can damage the AHU CONTROL KIT. Make sure to check for

any incorrect wiring before turning the power on.

DC 0~10 V(Temperature,U1)

DC 0~10 V(Humidity,U2)

UI1

UI2

Ground (G0)

AC 24 V(G)

AHU SENSOR CONNECTION

Sensor connection

- Temperature/humidity sensor (required)

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LG PAHCNM000 Installation guide

LG PAHCNM000 Installation guide

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