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LG
CNU
INSTALLATION MANUAL
Model: PQNFG14B0
Visit us at : http://www.lgservice.com
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.
LG

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   Summary of Contents for LG PQNFG14B0

  • Page 1

    Visit us at : http://www.lgservice.com INSTALLATION MANUAL Model: PQNFG14B0 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...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Cautions for safety ....................3 Part Description ......................6 Parts of a CNU......................6 CNU connection......................7 Wiring Diagram ......................8 Multi V SUPER(PLUS) & MPS PRODUCT...............8 Connection........................9 Network Interface Connection ................11 Dip Switch Configuration..................11 CNU setup method....................12 Connect with the PC ....................12 Set the PC environment for CNU IP setting............13 CNU Setup Configuration ..................18 CNU Normal operation condition confirmation ..........19...

  • Page 3: Cautions For Safety

    Cautions for safety Cautions for safety 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. This symbol indicates the possibility of death or serious injury.

  • Page 4

    Cautions for safety Don’t install it where rain falls on. Don’t install it in humid place. • Otherwise it may cause product failure. • Otherwise it may cause product failure. WHEN USING Don’t change or extend Don’t let there exist fire heat Don’t use heat equipment electric supply wire at your near the product.

  • Page 5

    Cautions for safety WHEN USING Don’t clean the product with If water has been smeared Don’t let metallic products strong detergent of solvents on electric charge part, use of necklace, coin, key, watch but only use soft cloth. it after removing water. etc.

  • Page 6: Part Description

    Part Description Part Description I Parts of a CNU Dimension LGAP 200.0 CNU CONT BOX Input voltage : DC9V 2.0A In/out port : RS232 1ea RS485 1ea LAN 1ea International standard IEC320 C8 type Power supply Power cord DC 9V , 2.0A NOTE : AC input spec.

  • Page 7: Cnu Connection

    Reset button • Cautions while connecting RS-485 communication line : When connecting the 485 communication line do as the picture below using the provided core and tie. PQNFG14B0 ---- PMNFP14A0 (PMNFP14A1) RJ45 Connector : BUS_A ---- BUS_A Connect with HUB OR...

  • Page 8: Wiring Diagram

    Wiring Diagram Wiring Diagram SUPER(PLUS) & MPS PRODUCT Please refer to network interface setting method on the 11 page. It explains about how to set PI 485(M) dip switch. Multi-V SUPER CNU Connection (PLUS) or MPS product Outdoor main PCB BUS_A BUS_B CN_CENTRAL...

  • Page 9: Connection

    Wiring Diagram Connection Deluxe central controller connection Cross Cable Direct Cable Direct Cable Installation Manual 9...

  • Page 10

    Wiring Diagram PC central controller connection Cross Cable Direct Cable Direct Cable Use the cross cable if not using the hub. If willing to use the hub, use the direct cable to connect with the hub 10 CNU...

  • Page 11: Network Interface Connection

    Selection air- Selection conditioner type network type ON KSDO 4H * LGAP : LG Air conditioner Protocol & MPS MULTI Products Configuration Methods ON KSDO4H 1 ON, Al others OFF: & MPS Non-Inverter Product applied Common PCB & MPS Inverter Product + Without LGAP central controller...

  • Page 12: Cnu Setup Method

    CNU setup method CNU setup method Connect with the PC NOTICE : The CNU IP is automatically set-up 192.168.1.101 following factory shipment. Do not set-up the CNU IP if wanting to use the PC Central Control without changing the CNU IP or Deluxe central controller connection LAN connection RS22 connection...

  • Page 13: Set The Pc Environment For Cnu Ip Setting

    If your computer doesn't have 232port, Use USB to 232 Port cable. 2) Start up the RS232 Monitoring Program on the PC. (You can download the RS232 Monitoring Program from LG air conditioner global website.) 3) Follow below procedure. Serial port...

  • Page 14

    CNU setup method Serial port Install Teraterm Select Change Setup to change program serial port boud rate 1. Click the starting icon 1. Select Serial 2. Reset the Port which is used by 232 cable. 14 CNU...

  • Page 15

    CNU setup method Serial port Change Click the Setup to change port PCB’s Reset button boud rate 1. Click the Setup button 3. Change boud rate 2. choosing serial port 4. Set 57600 Installation Manual 15...

  • Page 16

    CNU setup method Serial port Click the Change IP address Setup to change PCB ’s Reset button And Gateway boud rate 1. Click the PCB's reset button 1. type the character “C” 16 CNU...

  • Page 17

    CNU setup method Click the Change IP address Recheck the Changed DATA PCB ’s Reset button And Gateway Check CNU Setting data 5) Load all info : total information 1) MAC : Device Address (Don't change) 6) Central Controller Protocol : Select protocol '0' or 2) IP : CNU internet address '1', refer next page.

  • Page 18: Cnu Setup Configuration

    CNU setup method CNU Setup Configuration Press the number which it wants changing 1. MAC address (Don't change) 00.E0.91.0F.XX.XX is an item which is specific value 2. IP : IP set up menu - Use CNU IP set or change - Default value in factory is 192.168.1.101 Notice : Incase using private IP, Consult with network manager 3.

  • Page 19: Cnu Normal Operation Condition Confirmation

    CNU Normal operation condition confirmation CNU Normal operation condition confirmation Hardware operation condition confirmation 1) Check CNU LED1 is continuously blinking : 485 communication LED 2) Check L06D, L07D LEDs are Lighting : LAN CABLE connection confirmation LED 3) Check L09D,L08D blinking : LAN communication condition confirmation LED L08D blinking : connected Deluxe central controller(10M BPS) L09D blinking : connected PC(100M BPS) Notice : If the LAN cable is are not connected between PC(or DCC) and CNU then the LED6D,7D are not light...

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