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IMPORTANT! Please read this instruction sheet completely before installing the product. This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. WARNING •...
Table of contents TABLE OF CONTENTS Safety Precautions Included Items Minimum airflow by heater capacity Auxiliary Heat Control Static pressure drop factors Available power cable Assembly Diagram Electrical Wiring Installation Manual 3...
• Before installation, be sure to check all the included items. (However, be sure to use all kinds of certified products when purchasing the items other than those provided by LG at your local store.) • Be sure to carry out the earth work. (However, do not connect the unit to gas pipe, water pipe, a lightning rod and a phone earth line.
Included Items Included Items Auxiliary Heat Control Model Item Auxiliary Heat Control Installation Manual Screw Q’ty Figure (Unit : inch(mm)) Dimension Heater bracket Relay Bi metal Terminal block 8- 11/16(220) 9- 1/2(241) * Note: Image shown above may vary depends on model capacity. 13- 1/8(333.7) Installation Manual 5...
Assembly Diagram Assembly Diagram Step 1. Open upper front panel and control box cover. Upper Front Panel Control Box Cover Control Box Cover Control Box Cover Step 2. Disconnect the three thermistors(CN_Pipe out, CN_Pipe in and CN_Room, CN_Out) , CN_EEV and CN_Motor1 connector in control box.
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Assembly Diagram Step 3. Pull out control box. Remove heater panel. Step 4. Remove the additional mounting bracket (shown in the figure) while installing 5 kW and 10 kW heater with NJ chassis. Heater Panel Control Box Mounting bracket Step 5. Install heater. The bracket should be inserted in Step 6.
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Assembly Diagram Step 8. Connect power cable to terminal block. Connect earth cable to heater panel. 3, 5, 8, 10 kW Heater 15, 20 kW Heater EARTH POWER INPUT 1 1 Ø 208/230 V 60 Hz POWER INPUT 1 Ø 208/230 V 60 Hz POWER INPUT 2 EARTH 1 Ø...
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Assembly Diagram Step 10. Dip Switch Setting of Indoor unit PCB should be Step 11. Attach control box cover and upper front panel. setting On SW 5,6 In the case of Multi V Models with Auxiliary Heat Control, Dip switch 5,6 must be set ON. - SW 5 ON: Fan operates continuously.