LG Dry Contact Installation Manual
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LG Dry Contact Installation Manual

For thermostat
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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.
Dry Contact for thermostat
Original instruction
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
MFL69265526
Rev.00_012219
Copyright © 2019 LG Electronics Inc. All Rights Reserved.
www.lg.com

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  • Page 1 Dry Contact for thermostat Original instruction 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...

  • Page 2: Table Of Contents

    • 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. 2 Dry contact for thermostat Installation manual 3...

  • Page 3: Important Safety Instructions

    • You need to use a safely insulated power pointed objects. It will cause breakdown by supply which follows IEC61558-2-6 anc damaging parts. NEC Class2. If you do not follow, It may 4 Dry contact for thermostat Installation manual 5...
  • Page 4 • Do not touch or pull the lead wire with wet hands. It will cause product breakdown or electric shock. • This appliance is not intended for use by persons (including children) with reduced 6 Dry contact for thermostat Installation manual 7...

  • Page 5: Overview

    Part Descripton LG Dry Contact is a solution for automatic control of air conditioning system at the owner’s behest. In simple words, it’s 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.

  • Page 6: Installation

    Setting and using method 1) Loosen and remove two screws that secure the product. After change any Dry contact setting, then you must press RESET switch to reflect the setting. Power supply and indoor unit connection n When using the Dry contact for communication independently 2) Position the rear case to the direction towards to the connector for convenient cable arrangement.

  • Page 7: Setting Of Contact Signal Input

    4) Enable Thermostat priority control mode – Indoor’s remote-controller signal will be disregarded Notes • Information of ‘OPER_SW’ is sensed only initial step by Dry contact module therefore , once the configuration changed , Reset of Dry contact module is required.
  • Page 8 1) Thermal On : This input will change automatically desired temperature condition between remote control and controller can be different. Desired Temperature 18 °C In cooling mode Desired Temperature 30 °C In heating mode No function In FAN mode 14 Dry contact for thermostat Installation manual 15...

  • Page 9: Setting Of 'Temp_Sw

    2) Enable CN_WIND signal – Amount of wind flow(Low, Middle, High) signal enable Notes • Information of ‘OPER_SW’ is sensed only initial step by Dry contact module therefore , once the configuration changed , Reset of Dry contact module is required.
  • Page 10 1) In case of Occupancy sensor, - When motion is detected by the sensor, Indoor unit is enabled. Thermostat - Otherwise, Indoor unit is disabled. LG does not supply this section (Field supply) AC 24 V 2) In case of Emergency Stop or Security option.
  • Page 11 For heat pump thermostat with O terminal signal input n For heat pump thermostat with B terminal signal input Thermostat Thermostat LG does not supply this section LG does not supply this section (Field supply) (Field supply) AC 24 V...

  • Page 12: Indoor Unit Monitoring

    ※If both Operation input and DHW input were 0(Stop, Off), Night silent input and Emergency mode input CAUTION don't work. Field supply power should not use more than DC 12 V (0.5 A), AC 24 V (0.5 A). 22 Dry contact for thermostat Installation manual 23...
  • Page 13 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...
  • Page 14 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 For Thermostat PDRYCB300 www.lg.com MFL69265503 Rev.01_041918 Copyright © 2015 - 2018 LG Electronics Inc. All Rights Reserved.
  • Page 15 Safety Precautions Dry contact for thermostat Owner’s & installation manual Safety Precautions TABLE OF CONTENTS To prevent injury to the user or other people and property damage, the following instructions must be followed. n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

  • Page 16: Safety Precautions

    • Cause fire or electric shock. • Cause fire or electric shock. • If you give a shock to the • Cause fire or electric shock. product, it may cause the product’s failure. 4 Dry contact for thermostat Installation manual 5...

  • Page 17: Name Of Each Part

    : Output terminal to show whether there is an error with the indoor unit (Relay contact) 5. TEMP_SW : Switch to set the desired temperature of the indoor unit 6. SETTING_SW : Switch to select whether to use set function of Dry contact 7. CN_Ther/oper : Input terminal for thermo & operation signal 8. CN_MODE : Input terminal for Mode signal 9.

  • Page 18: Installation

    Setting and using method 1) Loosen and remove two screws that secure the product. After change any Dry contact setting, then you must press RESET switch to reflect the setting. 1. Power supply and indoor unit connection n When using the Dry contact for communication independently 2) Position the rear case to the direction towards to the connector for convenient cable arrangement.

  • Page 19: Setting Of Contact Signal Input

    SETTING_SW Notes DISPLAY_LED • Information of ‘SETTING_SW’ is sensed only initial step by Dry contact module therefore , once the configuration changed , Reset of Dry contact module is required. TEMP_SW • After power input or unit’s reset , wait 25~30 sec(Display LED 10 times blinking) for unit stabilization CN_OUT then Dry contact module will operate normally.
  • Page 20 1) Thermal On : This input will change automatically desired temperature condition between remote control and controller can be different. Desired Temperature 18 °C In cooling mode Desired Temperature 30 °C In heating mode No function In FAN mode 12 Dry contact for thermostat Installation manual 13...

  • Page 21: Setting Of 'Temp_Sw

    2) Enable CN_WIND signal – Amount of wind flow(Low, Middle, High) signal enable Notes • Information of ‘SETTING_SW’ is sensed only initial step by Dry contact module therefore , once the configuration changed , Reset of Dry contact module is required.
  • Page 22 1) In case of Occupancy sensor, - When motion is detected by the sensor, Indoor unit is enabled. Thermostat - Otherwise, Indoor unit is disabled. LG does not supply this section (Field supply) 24 V~ 2) In case of Emergency Stop or Security option.
  • Page 23 For heat pump thermostat with O terminal signal input n For heat pump thermostat with B terminal signal input Thermostat Thermostat LG does not supply this section LG does not supply this section (Field supply) (Field supply) 24 V~...

  • Page 24: Indoor Unit Monitoring

    ※If both CN_Oper input and DHW input were 0(Stop, Off), Night silent input and Emergency mode input CAUTION don't work. Field supply power should not use more than DC 12 V(3A), 24 V~(3A) 20 Dry contact for thermostat Installation manual 21...
  • Page 25 2. Veci elektriskie izstrādājumi var saturēt bīstamas vielas, tādēļ jūsu vecās ierīces pareiza likvidēšana palīdzēs novērst iespējamās negatīvās sekas videi un cilvēka veselībai. informacija o najbiližem ovlaštenom WEEE sabirnom centru. Za najnovije informacije iz vaše države molimo pogledajte internetske stranice www.lg.com/global/recycling Jūsu vecā...

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Pdrycb300

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