Visit us at : http://www.lgservice.com LG LG Dry contact for communication Owner's & installation manual Models: PQDSBC IMPORTANT • Please read this 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 communication Owner’s &installation manual TABLE OF CONTENTS ■ Safety Precautions .............................................................3~4 ■ Name of each part ..................................................................5 ■ Installation Method .............................................................6~7 Installation inside of the indoor unit..........................................................6 Installation outside of the indoor unit ...................................
Safety Precautions 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. WARNING This symbol indicates the possibility of death or serious injury. CAUTION This symbol indicates the possibility of injury or damage. ■ Meanings of symbols used in this manual are as shown below.
Safety Precautions ■ During use Do not modify or extend the power cord. • It can cause a fire and electric shock. Do not pour water inside the product. • It can cause an electric shock and problem to the product. Do not use any flaming devices near the product. • It can cause a fire. When the product is submersed in water, always request for service to the service center or the installation service provider. • It can cause a fire and electric shock. ter e rvic Se Do not give impact to the product.
Name of each part Name of each part (Front case) (Rear case) 9 8 7 CHANGE OVER_SW CN_OUT NOT USB VOLT NON VOLT 3 e 6 5 TEMP SETTING 11 1 (Top) 10 2 4 (Internal PCB board) (Side) (Side) DRY CONTACT FOR COMMUNICATION (DRY_CONTACT FOR COMMUNICATION) 1. CN_INDOOR : Connect communication wire between indoor unit and Dry contact for communication and supply power to Dry contact for communication 2. CN_PI485 : PI485 connector 3.
Installation Method Installation Method Installation inside of the indoor unit Loose 4 screws anchoring PCB and then separate the rear case and PCB Connect the connection wires according to the instructions. (Please refer to Setting and Using Method) Perform the switch setting according to switch setting method. (Please refer to Setting and Using Method) Fix PCB on suitable space inside of the indoor unit. 1. Install the product on flat surface and install anchoring screws at more than 2 places.
Installation Method Installation outside of the indoor unit Anchor the rear case of Dry Contact for communication on the installation surface at holes using anchor screws. Please cut the pole which is located in side of the front case properly. Connect connection wires according to the instructions. (Reference to Setting and Using Method) Then, connect wire to PCB after going through hole of . Perform the switch setting according to switch setting method.
Setting and using method Setting and using method You must press the RESET switch when you are completed with all the settings to reflect the settings. 1.
Setting and using method 2.
Setting and using method 3. Setting the desired temperature ■ When setting the desired temperature of the Dry contact for communication : When operating the indoor unit, set the desired temperature according to the TEMP_SW setting. SETTING_SW When the indoor unit is unlocked, the desired temperature can be reset by other controller 1) Turn on the TEMP_SETTING switch of SETTING_SW. 2) Use the TEMP_SW to set the temperature as shown below.
Setting and using method 4. Control mode setting ■ Use the CONTROL_MODE_SW to set the control mode you want from 0~D. CONTROL_MODE_SW ➲ Indoor control priority Central control > Dry contact for communication > Wired/Wireless remote controller, indoor unit button ➲ Dry contact for communication controls the indoor unit according to the applicable mode when there is a change in input of A and B.
Setting and using method 2) General mode CONTROL_ MODE S/W 1 2 3 4 5 6 Input A Input B OFF OFF Indoor unit stopped, locked ON OFF Indoor unit prior operating condition maintained, unlocked OFF ON Indoor unit stopped, locked ON ON Indoor unit stopped, locked OFF OFF Indoor unit stopped, locked ON OFF Indoor unit operating, unlocked OFF ON Indoor unit stopped, locked ON ON Indoor unit stopped, locked OFF OFF Indoor unit stopped, locked ON OFF Indoor unit stopped, locked
Setting and using method 3) Fan level setting mode CONTROL_ MODE S/W Input A Input B OFF OFF Indoor unit operating at low level, locked ON OFF Indoor unit operating at low level, unlocked OFF ON Indoor unit stopped, locked ON ON Indoor unit stopped, locked OFF OFF Indoor unit operating at low level, locked ON OFF Indoor unit operating at low level, unlocked OFF ON Indoor unit stopped, locked ON ON Indoor unit prior operating condition maintained, unlocked 7 8 Operating mode ➲
Setting and using method 5) Compressor stop mode CONTROL_ MODE S/W Input A Input B OFF OFF Indoor unit operating (Compressor in stop mode), locked ON OFF Indoor unit prior operating condition maintained (Compressor not in stop mode), unlocked OFF ON Indoor unit stopped, locked ON ON Indoor unit stopped, locked B Operating mode ➲ Compressor stop mode: The compressor is stopped during cool/heat operation.
Setting and using method 5. Indoor unit monitoring ■ Monitoring whether the indoor unit is operating: Refer to below and connect to the control device that you want to control. Local Supply Power AC or DC Operation Display (Depends on Operation display power type) ■ Monitoring indoor unit error: Refer to below and connect to the control device that you want to control.
P/No.: MFL42540202 Printed in Korea After reading this manual, keep it in a place easily accessible to the user for future reference.
