website http://www.lgservice.com e-mail http://www.lgeservice.com/techsup.html LG Air Conditioner INSTALLATION MANUAL IMPORTANT • Please read this instruction sheet completely before installing the product. • When the power cord is damaged, replacement work shall be performed by authorized personnel only. • Installation work must be performed in accordance with the national wiring standards by authorized personnel only.
Multi Air Conditioner Installation Manual TABLE OF CONTENTS Installation Requirements Required Parts Required Tools The following should be always observed for safety................................4~5 Installation of Indoor, Outdoor Unit ..................6~10 ❏ Installation guide map ❏ Four Type “A” screws & plastic anchors ❏ Connecting cable ❏ Level gauge ❏ Screw driver ❏ Electric drill ❏ Hole core drill (ø50mm) ❏ Horizontal meter Flaring work and piping connection ...................
Installation Parts Provided Installation Parts Provided Installation plate Type "A" screws and plastic anchors Type "B" screws Holder Remote Control more than 20cm 5. Copper pipe (Liquid side) 6. Copper pipe (Gas side) more than 20cm 7.
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 symbol used in this manual are as shown below.
Safety Precautions Always intstall an circuit breaker and main breaker. If strange sound, smell or smoke come from product, turn the breaker off or disconnect the power supply cable. • Otherwise, it may cause electric shock or fire. Cover the electric part. • Otherwise, it may cause fire or electric shock. Do not put the heater, etc. near the power cable. • Otherwise, it may cause fire and electric shock. Do not turn the breaker on/off or connect/disconnect the power supply plug during operation.
Installation of Indoor, Outdoor Unit Installation of Indoor, Outdoor Unit Read completely, then follow step by step. Select the best location Indoor unit 1. Do not have any heat or steam near the unit. More than 5cm More than 5cm 2. Select a place where there are no obstacles in front of the unit. 3. Make sure that condensation drainage can be conveniently routed away. More than 2.3m More than 5cm More than 5cm More than 10cm 4. Do not install near a doorway. 5.
Installation of Indoor, Outdoor Unit Piping length and elevation (m) Outdoor Capacity (Btu/h) Total Length (m) 14k 18k 21k 30k 15+15=30 15+15=30 15+15+15=45 15+15+15+15=60 Indoor Capacity (Btu/h) Gas 7~12k 18~24k 3/8" 1/2" Max Length(A/B) Max Elevation (h1) In - In Elevation (h2) (m) (m) (m) 15 15 15 15 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 Pipe Size Standard Length Liquid (m) 1/4" 1/4" 7.5 7.
Installation of Indoor, Outdoor Unit How to fix installation plate The wall you select should be strong and solid enough to prevent vibration Installation Plate 1. Mount the installation plate on the wall with type "A" screws. If mounting the unit on a concrete wall, use anchor bolts. • Mount the installation plate horizontally by aligning the centerline using a level. Type "A" screw 2. Measure the wall and mark the centerline.
Installation of Indoor, Outdoor Unit Preparing work for Installation (Artcool Type Only) 1. First, push the front panel backward and lift it up to remove the two screws. 2. The moment of lifting the both lower parts of panel front, you can hear sound when this panel came out, At this time panel front is separated 3. After pull down this panel a bit, and separate connecting wire with product. Panel Front Connector Remove cover pipe and cover side 1. Remove two screws(for fixing cover pipe) 2.
Installation of Indoor, Outdoor Unit Sticking the installation guide map and fixing Indoor unit (Artcool Type Only) Put an Installation Guide Map on the desired surface. INSTALLATION GUIDE MAP Look at suited horizon by horizontal meter on the horizontal setting line, and Fix lightly the map by adhesive tape. IN ST AL LA TIO N Horizontality Make a hole with diameter of 6mm and depth of 30-35mm when piercing a screw point.
Flaring Work Piping Connection Flaring Work Piping Connection Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. Cut the pipes and the cable. 1. Use the piping kit accessory or the pipes purchased locally. 2. Measure the distance between the indoor and the outdoor unit. Copper pipe Slanted Uneven Rough 90° 3. Cut the pipes a little longer than measured distance. 4. Cut the cable 1.5m longer than the pipe length.
Flaring Work Piping Connection Check 1. Compare the flared work with figure below. Smooth all round Inside is shiny without scratches 2. If flare is noted to be defective, cut off the flared section and do flaring work again. = Improper flaring = Even length all round Inclined Surface Cracked Uneven damaged thickness Connection of piping - Indoor Preparing the indoor unit's piping and drain hose for installation through the wall. 1.
Flaring Work Piping Connection Indoor unit installation Connecting cable Drain hose Connecting the pipings to the indoor unit and drain hose to drain pipe 1. Align the center of the pipings and sufficiently tighten the flare nut by hand. Indoor unit tubing Flare nut Pipings 2. Tighten the flare nut with a wrench. Outside diameter mm inch Ø6.35 1/4 Ø9.52 3/8 Ø12.7 1/2 Ø15.88 5/8 Ø19.05 3/4 Torque kg.m 1.8 4.2 5.5 6.6 6.
Flaring Work Piping Connection 3. Bundle the piping and drain hose together by wrapping them with vinyl tape over the range within which they fit into the rear piping housing section. Wrap with vinyl tape Pipe Vinyl tape(wide) Drain hose CAUTION: Installation Information (For right piping) For right piping, follow the instruction below. Good case • Press on the upper side of clamp and unfold the tubing to downward slowly.
Flaring Work Piping Connection Connection of piping - Outdoor Indoor Capacity (Btu/h) 18k 24k ENGLISH ❈ When piping installation work, following indoor units must be used the connector which is in each indoor unit. Gas Side Ø9.52 → Ø12.7 Align the center of the piping and sufficiently tighten the flare nut by hand. Finally, tighten the flare nut with torque wrench until the wrench clicks.
Connecting the Cable between Indoor Unit and Outdoor Unit Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Indoor unit. Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and the terminal No. are the same as those of the indoor unit.) The earth wire should be longer than the common wires.
Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Outdoor unit. 2. Secure the cable onto the control board with the holder (clamper). Outdoor unit ENGLISH 1. Remove the cover control from the unit by loosening the screw. Connect the wires to the terminals on the control board individually as the following. Terminal block Over 5mm Holder for power supply cord 3. Refix the cover control to the original position with the screw. 4.
Checking the Drainage and Forming the Pipings Checking the Drainage and Forming the Pipings Checking the drainage To check the drainage. 1. Pour a glass of water on the evaporator. 2. Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit. Drain piping 1. The drain hose should point downward for easy drain flow. Downward slope 2. Do not make drain piping.
Checking the Drainage and Forming the Pipings Form the piping • If you want to connect an additional drain hose, the end of the drain outlet should be routed above the ground. Secure the drain hose appropriately. Seal a small opening around the pipings with gum type sealer. Taping Drain hose Pipings Plastic band In cases where the outdoor unit is installed below the indoor unit perform the following. 1. Tape the piping, drain hose and connecting cable from down to up. 2.
Vacuum Test of the leakage Air and moisture remaining in the refrigerant system have undesirable effects as indicated below. 1. Pressure in the system rises. 2. Operating current rises. 3. Cooling(or heating) efficiency drops. 4. Moisture in the refrigerant circuit may freeze and block capillary tubing. 5. Water may lead to corrosion of parts in the refrigeration system.
Vacuum Soap water method Outdoor unit A-UNIT 3-way valve (Close) 2-way valve (Open) Gas side piping 3-way valve (Close) Liquid side piping B-UNIT 2-way valve (Open) Cap Hexagonal wrench Vacuum 1. Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit. Confirm the "Lo" knob of the manifold valve is open. Then, run the vacuum pump. The operation time for evacuation varies with tubing length and capacity of the pump.
Panel Front Assembly Panel Front Assembly (Artcool type Only) 1. First, Check the side cover assembly exactly, Fix power cord in the bottom groove of cover side left. 2. Assemble connecting lead wire with controller and first fix the upper part of panel front, then match the lower part of panel front Panel Front Connector 3. Suspend hook of front panel in the groove after contract lower of 2 screws.
Test Running Test Running ENGLISH 1. Check that all tubing and wiring have been properly connected. 2. Check that the gas and liquid side service valves are fully open. Prepare remote control Remove the battery cover by pulling it according to the arrow direction. Insert new batteries making sure that the (+) and (–) of battery are installed correctly. Reattach the cover by pushing it back into position. NOTICE : • Use 2 AAA(1.5volt) batteries. Do not use rechargeable batteries.
