LG PRVC1 Installation Manual
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LG PRVC1 Installation Manual

LG PRVC1 Installation Manual

Low ambient control kit
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INSTALLATION MANUAL
Low Ambient Control Kit
• 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.
MODEL : PRVC1
P/NO : MFL42540226
www.lg.com

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Summary of Contents for LG PRVC1

  • Page 1 • 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. MODEL : PRVC1 www.lg.com P/NO : MFL42540226...

  • Page 2: Table Of Contents

    Low Ambient Control Kit Installation manual TABLE OF CONTENTS ■ Safety Precautions ................3 ■ Accessory Parts ..................5 ■ Name of each part ................6 ■ Installation Method ................7 1. Single unit install Guide..............7 2. Series unit install Guide ..............11 3. Unit Placement and Clearances.............15 ■...

  • Page 3: Safety Precautions

    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.
  • Page 4 Safety Precautions ■ During use Do not modify or extend the Do not pour water inside the When the product is submersed power cord. product. in water, always request for service to the service center or the installation service provider. •...

  • Page 5: Accessory Parts

    Accessory Parts Accessory Parts Low Ambient Control PCB Transformer Cable Assy Terminal Block Assy Screw (6EA) Tie (2EA) Panel 1EA Installation manual 5...

  • Page 6: Name Of Each Part

    Name of each part Name of each part Low Ambient Control Kit 1. CN_PWR : Power input terminal(DC 12V) 2. CN_AO : Signal output terminal to control a damper actuator 3. CN_OUT : Outdoor unit connector 4. BUS_A : RS-485 (+) terminal 5.

  • Page 7: Installation Method

    Installation Method Installation Method 1. Single unit install Guide 1. Shut off the main power line of outdoor unit. 2. Install the LAC(Low Ambient Control) PCB in the control box by using screws. 3. Install the panel assy in the control box by using screws. Step 2 Step 3 Terminal block...
  • Page 8 Installation Method 6. Connect the red wire of transformer to the terminal block (2Pin yellow terminal block). 7. Connect a power cable (DC 12V) to CN_PWR (12V, GND) of LAC Step 6 Step 7 CN_PWR 8. Connect the common wire of Damper Actuator to the terminal block and connect the wire of LAC(CN_AO(GND(A-)) to the common wire of Damper Actuator.
  • Page 9 Installation Method 10. Connect the wire of control signal of Damper Actuator to CN_AO(AO_01(A+)) of LAC 11. Set up the main function dip switch of LAC PCB. Step 10 Step 11 1 2 3 4 AC 24V Power for Damper Actuator of Master Master(AO_01(A+)) DC 0~10V Control Signal...
  • Page 10 14. Turn on the main power line of outdoor unit. 15. Check the signal to CN_AO(AO_01, GND) of LAC and Air Damper. Step 14,15 10 Low Ambient Control Kit...

  • Page 11: Series Unit Install Guide

    2. Series unit install Guide 1. Shut off the main power line of outdoor unit. 2. Install the LAC(Low Ambient Control) PCB in the control box by using screws. 3. Install the panel assy in the control box by using screws. Step 2 Step 3 Terminal block...
  • Page 12 Installation Method 6. Connect the red wire of transformer to the terminal block (2Pin yellow terminal block). 7. Connect a power cable (DC 12V) to CN_PWR (12V, GND) of LAC Step 6 Step 7 CN_PWR 8. Connect the common wire of Damper Actuator of Master Unit & Slave Unit to the terminal block and connect the wire of LAC(CN_AO(GND(A-)) to the common wire of Damper Actuator of Master Unit &...
  • Page 13 Installation Method 10. Connect the wire of control signal of Damper Actuator of Master Unit to CN_AO(AO_01(A+)) and connect the wire of control signal of Damper Actuator of Slave Unit to CN_AO(AO_02(B+)) 11. Set up the main function dip switch of LAC PCB. Step 10 Step 11 1 2 3 4...
  • Page 14 Installation Method 14. Turn on the main power line of outdoor unit. 15. Check the signal to CN_AO(AO_01, GND), (AO_02, GND) of LAC and Air Damper of Master Unit & Slave Unit. Step 14,15 14 Low Ambient Control Kit...

  • Page 15: Unit Placement And Clearances

    Installation Method 3. Unit Placement and Clearances 1. Outdoor units should be located in an area protected from prevailing winds. (shown below) In high wind locations it may be advisable to locate the units within a walled area. Top View Prevailing wind Building Wall Outdoor Unit...
  • Page 16 Installation Method 3. When units are combined they should be placed the minimum 30mm. 30mm 4. If units are placed further than 30mm apart, additional snow hoods may be required. 16 Low Ambient Control Kit...

  • Page 17: Setting And Using Method

    Setting and using method Setting and using method 1. Power source input ■ When wiring power source from outdoor unit DC12V or DC15V 12V GND Outdoor Unit ■ When using ODU Dry contact with Central Control Devices BUS_A Central Control Devices BUS_B Notes...
  • Page 18 Setting and using method ■ Communication and Power Line - If communication and power lines are run alongside each other then there is a strong likelihood of operational faults developing due to interference in the signal wiring caused by electrostatic and electromagnetic coupling.

  • Page 19: Wiring For Low Ambient Control Pcb And Transformer

    Setting and using method 2. Wiring for Low Ambient Control PCB and transformer Notes This device can accept only DC 12V power input. Do not input AC power. Otherwise it will cause a serious damage. The power(DC 12V) line is recommended by AWG 22 (0.644mm, 0.053Ω/m). Installation manual 19...

  • Page 20: Wiring For Damper Actuator

    Setting and using method 3. Wiring for Damper Actuator AC 24V AC 24V Power for Damper Actuator of Master & Slave Common Central Control Device Slave(AO_02(B+)) Master(AO_01(A+)) DC 0~10V Control Signal for Damper Actuator of Master & Slave Notes The low ambient control PCB can control maximum two actuators. The power (AC 24V) and signal (DC 0~10V) line is recommended by AWG 22 (0.644mm, 0.053Ω/m).

  • Page 21: Setting Of 'Swdip

    Setting and using method 4. Setting of ‘SWDIP’ ■ Using ‘SWDIP’, select the option of control function as described below 1 2 3 4 Notes Default status is L1 : ON L2 : OFF • Output signal setting Position Function Control signal : DC 0V(OFF), DC 8~10V(ON) 1 2 3 4 Control signal : DC 0V(OFF), DC 6~10V(ON)

  • Page 22: Setting Of Outdoor Unit Dip Switch

    Setting and using method 5. Setting of outdoor unit dip switch SW01B SW02B 1 2 3 4 5 6 7 1 2 3 4 5 6 7 Position Function Low Ambient Control Mode 1 2 3 4 5 6 7 1 2 3 4 5 6 7 Notes After change ‘SWDIP’...

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