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INSTALLATION MANUAL
AIR CONDITIONER
• 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.
P/NO : 3828A20403C
www.lg.com
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Table of Contents
Related Manuals for LG MS18AH.N50
Summary of Contents for LG MS18AH.N50
- 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. www.lg.com P/NO : 3828A20403C...
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Page 2: Table Of Contents
Room Air Conditioner Installation Manual TABLE OF CONTENTS Installation Required Parts Required Tools Requirements ❏ Four type "A" screws & plastic ❏ Level gauge Safety Precautions......3 anchors ❏ Screw driver ❏ Connecting cable ❏ Electric drill Introduction ........5 Symbols used in this manual..5 ❏... -
Page 3: Safety Precautions
Safety Precautions Safety Precautions To prevent the injury of the user or other people and property damage, the following instructions must be followed. I Be sure to read before installing the air conditioner. I Be sure to observe the cautions specified here as they include important items related to safety. I Incorrect operation due to ignoring instruction will cause harm or damage. - Page 4 Safety Precautions Always intstall an circuit breaker and main Do not touch(operate) product with wet breaker. hands. • No installation may cause fire and electric • Otherwise, it may cause fire or electric shock. shock. If strange sound, smell or smoke come from Do not put the heater, etc.
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Page 5: Introduction
Introduction Introduction Symbols used in this Manual This symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that may cause harm to the air conditioner. NOTICE This symbol indicates special notes. Features Air Inlet Front Panel Air Filter Signal Receptor... -
Page 6: Installation
Installation Installation Read carefully, and then follow step by step. Installation Parts Type 1 Type 2 Installation plate Installation plate Type "B" screw Type "B" screw Type "A" screw (6 EA) Type "A" screw (8 EA) Remote control holder Remote control holder Installation Tools Figure Name... -
Page 7: Installation Map
Installation Installation Map NOTICE Installation parts you should purchase. Installation plate Sleeve Bushing-Sleeve Putty(Gum Type Sealer) Bend the pipe as closely on the wall as possible, but be careful that it doesn't break. Air Discarge Vertical Air deflector Operation Indication Lamps/ Vinyl tape (Wide) Signal Receptor •... -
Page 8: Selecting The Best Location
Installation Select the best Location Indoor unit 1. Do not have any heat or steam near the unit. More than 2. Select a place where there are no obstacles More than 10cm in front of the unit. 3. Make sure that condensation drainage can be conveniently routed away. -
Page 9: Piping Length And Elevation
Installation Piping length and elevation Indoor Pipe Size Multi Piping Type Pipe Size Capacity Capacity Total Max Elevation In - In Elevation (Btu/h) (Btu/h) Length Length(A/B) (h1) (h2) LIQUID 7k, 9k, 12k 3/8" 1/4" 14k/16k 18k, 24k 1/2" 1/4" Distributor Type Capacity Max Main Pipe Total Branch... -
Page 10: Fixing Installation Plate
Installation Fixing 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 Chassis concrete wall, use anchor bolts. Hook •... -
Page 11: Flaring Work
Installation Flaring Work 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. Copper Slanted Uneven Rough 2. -
Page 12: Connecting The Piping
Installation Check 1. Compare the flared work with the figure by. Smooth all round Inside is shiny without scratches 2. If a flared section is defective, cut it off and do flaring work again. = Improper flaring = Inclined Surface Cracked Uneven damaged thickness... - Page 13 Installation 4. Indoor unit installation Hook the indoor unit onto the upper portion of the installation plate.(Engage the two hooks Connecting cable of the rear top of the indoor unit with the upper edge of the installation plate.) Ensure Drain hose that the hooks are properly seated on the installation plate by moving it left and right.
- Page 14 Installation For left rear piping 1. Route the indoor tubing and the drain hose to the required piping hole position. Connecting 2. Insert the piping, drain hose, and the cable connecting cable into the piping hole. 3. Insert the connecting cable into the indoor unit. Drain pipe •...
- Page 15 Installation Wrap the insulation material around the Plastic bands Insulation material connecting portion. 1. Overlap the connection pipe heat insulation and the indoor unit pipe heat insulation material. Bind them together with vinyl tape so that there may be no gap. 2.
- Page 16 Installation Installation Information. For left piping. Follow the instruction below. Good case • Press on the upper side of clamp and unfold the tubing to downward slowly. Bad case • Following bending type from right to left may cause damage to the tubing. 16 Room Air Conditioner...
- Page 17 Installation Outdoor Align the center of the pipings and sufficiently tighten the flare nut by hand. Finally, tighten the flare nut with torque wrench Outdoor unit A-UNIT until the wrench clicks. • When tightening the flare nut with torque Gas side piping wrench, ensure the direction for tightening follows the arrow on the wrench.
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Page 18: Connecting The Cables
Installation 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. - Page 19 Installation Connect the cable to the Outdoor unit. 1. Remove the cover control from the unit by Outdoor unit loosening the screw. Terminal block Connect the wires to the terminals on the control board individually as the following. Over 5mm 2.
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Page 20: Checking The Drainage
Installation 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. -
Page 21: Forming The Piping
Installation Forming the piping Form the piping by wrapping the connecting portion of the indoor Seal a small unit with insulation material and Taping opening around the pipings with secure it with two kinds of vinyl Drain hose gum type sealer. tape. -
Page 22: Air Purging
Installation Air Purging Air purging The 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. - Page 23 Installation Soap water method Outdoor unit A-UNIT 1. Remove the caps from the 2-way and 3-way valves. 3-way valve Gas side piping (Close) 2. Remove the service-port cap from the 3-way valve. 2-way valve 3. To open the 2-way valve turn the valve stem B-UNIT (Open) counterclockwise approximately 90°, wait for about...
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Page 24: Test Running
Installation Test Running 1. Check that all tubing and wiring are properly connected. 2. Check that the gas and liquid side service valves are fully open. Prepare remote controller 1. Remove the battery cover by pulling it according to the arrow direction. 2. - Page 25 Installation NOTICE If the actual pressure is higher than shown, the system is most likely over-charged, and charge should be removed. If the actual pressure are lower than shown, the system is most likely undercharged, and charge should be added. PUMP DOWN This is performed when the unit is relocated or the refrigerant circuit is serviced.
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Page 26: Combination Indoor Units
Combination indoor units Combination indoor units The indoor units connectable to the outdoor unit are shown below. Model Name Chassis Type Capacity, Btu/h Name 5000 7000 9000 12000 18000 24000 30000 36000 Standard Type Artcool Deluxe Type Artcool Type Ceilling Mounted Cassete Type 1Way Ceilling Mounted Cassete Type 4Way... -
Page 27: Max Combination Capacity
Combination table of Models Max Combination Capacity Multi Piping Type Capacity Combination Indoor Capacity Max Combination Capacity Max Room No. (kBtu/h) (kBtu/h) (kBtu/h) 5, 7, 9, 12 5, 7, 9, 12, 18 5, 7, 9, 12, 18, 24 5, 7, 9, 12, 18, 24 5, 7, 9, 12, 18, 24 5, 7, 9, 12, 18, 24 Distributor Type...