LG PAHCNM000 Owner’s Manual

OWNER’S & INSTALLATION MANUAL

AIR CONDITIONER

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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

MFL71386003	www.lg.com
Rev.04_040821	Copyright © 2019 - 2021 LG Electronics Inc. All Rights Reserved.

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2 SAFETY INSTRUCTIONS

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.

!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.

!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.

! 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.

SAFETY INSTRUCTIONS		3
• Securely attach the electrical part cover to AHU Communication		<![if ! IE]> <![endif]>ENGLISH

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
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• 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

TABLE OF CONTENTS

2SAFETY INSTRUCTIONS

6INSTALLATION LAYOUT

6Installation composition diagram

6Caution on installation layout

7PRODUCT DIMENSION

7Product Measurements

8PARTS LAYOUT

9WIRING DIAGRAM

10 AHU CONTROL KIT INSTALLATION

10Determining the product's mounting location

11Things to keep in mind when installing outdoors

12Sensor Cover Installation (outdoors)

13AHU CONTROL KIT SETTINGS

13 Check Module Configuration

15PIPE THERMISTOR CONNECTION

16OUTDOOR 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

17Wiring method when adding EEV module.

18AHU SENSOR SPECIFICATION

20 AHU SENSOR CONNECTION

20 Sensor connection

25Electrical Wiring (if using a belt driven fan)

26Connect the electric wires

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

28HMI SETTINGS

28 HMI Settings

45 Self-Diagnosis

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6 INSTALLATION LAYOUT

INSTALLATION LAYOUT

Installation composition diagram

RA

EA OA

SA

-1

-2

-1

-2

-1 -2

MCC

				Power cable
				Communication cable
				Thermistor signal
				Temperature /
				humidity sensor
No.	Item		Applied Standards
	AHU	-
	AHU CONTROL KIT		PAHCNM000
	Expansion kit	-
	Outdoor unit		MULTI V
	Pipe in Thermistor(Liquid)	Sensor : Ø 5(NTC 5 kΩ), Length : 5 m, Cable color : Black
	Pipe out Thermistor(Gas)	Sensor : Ø 7(NTC 5 kΩ), Length : 5 m, Cable color : Red
-1, 2	Temperature/humidity sensor RA, SA		Optional
-1, 2	Ventilation Fan, Supply Fan	-
-1, 2	Inverter drive kit	-
	Main power switch board	MCC switch board panel
	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.

PRODUCT DIMENSION	7

PRODUCT DIMENSION

Product Measurements

8-Ø7 Holes

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D	W
(Side)	(Front)

C

(Bottom)

A

(Back)

	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

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

Model					PAHCNM000
			W	mm	500
Size	Product		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	Operating Temperature				-20 ~ 65 °C DB
Environment Conditions	Humidity				0 ~ 98 %

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8 PARTS LAYOUT

PARTS LAYOUT

• PAHCNM000

10

9

1

2

3

4

5

6

8

7

11

	No.	Main module	Spec	Qty.	No.	Main module	Spec	Qty.
		Main module	DC 12 V	1		NFB(No Fuse	15 A 1.5 kA	1
						Breaker)
		UI module	DC 12 V	1		Adaptor	220 V → DC 12 V	1
		UO module	DC 12 V	1		Trans	220 V → AC 24 V	1
		EEV module #1	DC 12 V	1		Terminal Block	15 PIN	1
		EEV module #2	DC 12 V	1		Terminal Block	Single phase	1
							220 V~, 60 Hz
		EEV module #3	DC 12 V	1

WIRING DIAGRAM 9

WIRING DIAGRAM

• PAHCNM000

!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.

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10 AHU CONTROL KIT INSTALLATION

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).

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552

<Back Side of Control Kit>

!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.

-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.

AHU CONTROL KIT INSTALLATION 11

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.

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Additional

AHU

enclosure

Control kit

! CAUTION

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

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12 AHU CONTROL KIT INSTALLATION

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.

								RA	EA	OA	SA

Ex: Installation of a damper actuator cover.

		RA	EA	OA	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.

AHU CONTROL KIT SETTINGS 13

AHU CONTROL KIT SETTINGS

Check Module Configuration

-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

Main Module

		UO Module
	UI Module		EEV		Module

(Main Module)

UI Module

(UI Module)

UO Module

(UO Module)

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

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14 AHU CONTROL KIT SETTINGS

EEV Module

(EEV Module)

Capacity Settings

Use DIP switch SW1 to set the capacity.

SW1

1	2	3	4	Capacity [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)

*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.)

	Sequence		SW2			Address	Remark
		1	2	3	4
	EEV #1	OFF	OFF	OFF		Internal address 0	EEV #1,2,3
	EEV #2	OFF	OFF	ON		Internal address 1
							Included
	EEV #3	OFF	ON	OFF	OFF	Internal address 2
	EEV #4	OFF	ON	ON		Internal address 3	EEV #4,5,6 Optional :
	EEV #5	ON	OFF	OFF		Internal address 4
							Additional setting required
	EEV #6	ON	OFF	ON		Internal address 5

PIPE THERMISTOR CONNECTION 15

PIPE THERMISTOR CONNECTION

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

AHU

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

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

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

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

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

Pipe out Thermistor

Pipe in Thermistor

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16 OUTDOOR UNIT COMMUNICATION LINE CONNECTION

OUTDOOR UNIT COMMUNICATION LINE CONNECTION

Cautions on connecting the EEV module (communication

module) with outdoor unit				<![if ! IE]> <![endif]>B-
- The Control Kit comes mounted with three EEV modules,			<![if ! IE]> <![endif]>A+	<![if ! IE]> <![endif]>CH2
	<![if ! IE]> <![endif]>IDU B	<![if ! IE]> <![endif]>IDU A	<![if ! IE]> <![endif]>CH2
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.

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.

CH3 A+

CH3 B-

<Main module>
Connect	Connect	Connect
CEN B, CEN A	CEN B, CEN A	CEN B, CEN A
Outdoor	Outdoor	Outdoor
Unit #1	Unit #2	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.

•DIP SW 3 of the outdoor unit must be turned off in order to ensure communication between the control kit and the outdoor unit.

•When connecting to Multi V Super 5, Function FN39 must be set to Option1. (Dip switch No.5 ON → FUNC → FN39 → OP1) Please refer to the Multi V manual for details on Multi V Function settings. (Applicable to both ventilation temperature control and supply air temperature control)