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ENGLISH

LG Dry Contact

INSTALLATION MANUAL

Models: PQDSA PQDSB

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.
Dry Contact Unit Installation Manual

TABLE OF CONTENTS

I Safety Precautions..3~4 I Overview...5 I Part Description...7 I Installation Guide...9
I Step 1....9 I Step 2...10
I Administrator Guide...11

2 Dry Contact

Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed. I Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

WARNING CAUTION

This symbol indicates the possibility of death or serious injury. This symbol indicates the possibility of injury or damage.
I Meanings of symbols used in this manual are as shown below.
Be sure not to do. Be sure to follow the instruction.

WARNING

I Installation
Don't touch with the hands while the power is on
There is risk of fire or electric shock.
Use standard parts(connector).
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.

Installation Manual 3

Use the correctly rated breaker or fuse.
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.

I Operation

When the product is soaked (flooded or submerged), contact an Authorized Service Center.
Be cautious that water could not enter the product.
There is risk of fire, electric shock, or product damage.

4 Dry Contact

Overview
LG Dry Contact is a solution for automatic control of air conditioning system at the owners behest. In simple words, its a switch which can be used to turn the unit On/Off after getting the signal from external sources like key-in lock, door or window switch etc specially used in Hotel rooms. Its a small PCB that either can be fit inside the control box of Indoor unit or can be outside the unit in a plastic case if there is no sufficient space inside the Indoor unit. Apart from simple installation, it can also be linked to Central Controller via Indoor unit PI485 pcb. For this, all connecting wires & an additional small pcb for looping is also provided along with Dry Contact. Dry Contact can be used in two ways. 1. It can be used to actually turn On/Off the system on receiving the signal from the source. In this case, user doesn't need to use remote controller anymore to turn On/Off the system. However all the further settings like temperature, fan speed, mode etc can be done through remote controller only. 2. Other way is almost similar as above but in this case, after getting the On signal from the external source, user has to turn On the system from remote controller only. Dry contact just activates the system. However system can be turned Off directly from the external source. So only On mode is different here. So in both of above conditions, system cant be operated without signal from external source which prevents unnecessary use of system & facilitates its operation only when its required. These settings can be selected from the remote controller whose details have been explained in the later part of this manual So depending upon the requirement, Dry Contact offers a variety of applications to suit the customers requirement in the best possible way.

Installation Manual 5

Power Connector

Indoor PCB Connector

Dry Contact Controller Connector

6 Dry Contact

Part Description

PQDSA (Only PCB)

PQDSB (PCB + Case)

DRY CONTACT UNIT LG

[Top case]

[Bottom case]

[ PCB ]

[Side]

1 CN-POWER : AC 220V Connector 2 CN-CC : Indoor PCB Connector 3 CN_DRY (L) : DRY CONTROLLER Connector 4 CN_DRY ( SIG ) : DRY CONTROLLER Connector 5 CN_DRY (ERROR CHECK) : ERROR Check Display Connector 6 CN_DRY( OPER STATE): Operation Display Connector

Installation Manual 7

Accessory
Cable 1EA (for Central controller) Connecting PCB (6871A30056A) *for Central Controller
Dry contact (For installation, 4EA) Cable 3EA (for connecting with indoor unit)
Dry contact - 4EA (For assembly the case)

User/Installation Manual

[Structure of each cable] *Note
These cable using for connection between Dry contact and Indoor unit. So before using these things Please check the connector type first and use cables on proper indoor unit.

8 Dry Contact

Installation Guide

Step 1

Connect CN-CC with Indoor PCB by the cable(provided) - Connection of Dry contact only

Indoor PCB

DRY CONTACT PCB

CN-CC 2 1

AC 220V
- Connection of Dry contact & LG Central Controller in case of single constant models.
Connection PCB (6871A30056A)
BR1 OSC01B L02D L01D C01A IC01A
SWITCH LED1 LED01G LED02G LED03G
PI485 PCB : Special purchase for Central Control (Ex : PHNFP14A0 or PSNFP14A0.)

TANS01Y

* Single Only - When you install single product this PCB have to add.
U03Y U04Y U02Y ZNR01Y CN_COMM

Installation Manual 9

Step 2
Connect CN_DRY with Control Unit. (Fix SUB PCB into the proper location.) - To apply power source through PCB

CN-CC RY1

Operation Display Error Check Display Dry contact Controller

CN_DRY

INPUT AC 220V
- To apply power source directly to external source
LG does not supply this section

10 Dry Contact

Administrator Guide

* Function ENGLISH

It gives selection whether to turn ON the unit directly or not from the external source. The selection can be made by pressing CANCEL button of the wireless remote controller 3 times within 3 minutes of resetting the unit with facing it towards the unit. (This function availability depends on indoor unit model)

CANCEL

CANCEL Button

ON OFF SET AUTO CLEAN

CANCEL PLASMA
1. To turn ON the unit directly from the external source 2. Not to turn ON the unit directly from the external source. Only to activate the system.

If the power gives out, the Air conditioner may be run to before state after power returns because Air conditioner's function of interruption of electric power compensation.

Installation Manual 11

P/No.: 3828A20494A Printed in Korea After reading this manual, keep it in a place easily accessible to the user for future reference.