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LG
Air Conditioner
INSTALLATION MANUAL
website http://www.lgservice.com
e-mail http://www.lgeservice.com/techsup.html
IMPORTANT
• Please read this installation manual 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.
LG
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Summary of Contents for LG LMNC126LRL0
- Page 1 website http://www.lgservice.com e-mail http://www.lgeservice.com/techsup.html Air Conditioner INSTALLATION MANUAL IMPORTANT • Please read this installation manual 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.
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Page 2: Table Of Contents
Multi Air Conditioner Installation Manual TABLE OF CONTENTS Installation Required Parts Required Tools Requirements The following should be always observed for safety........4~6 Installation of Indoor, Installation guide map Level gauge Four Type “A” screws & plastic Screw driver Outdoor Unit ....7~9 anchors Electric drill Connecting cable... - Page 3 Installation Parts Provided Installation Parts Provided Standard Type Installation plate Type "A" screws and plastic anchors Type "B" screws Holder Remote Control 48K Btu/h Air outlet vents (Rear) (Side) Air intake vents Control cover Connecting wire Piping Drain hose 60K Btu/h Air outlet vents (Rear) (Side)
- Page 4 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 5 Safety Precautions Do not modify or extend the power cable. Be cautious when unpacking and installing the product. • There is risk of fire or electric shock. • Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.
- Page 6 Safety Precautions CAUTION Installation Always check for gas (refrigerant) leakage after Install the drain hose to ensure that water is installation or repair of product. drained away properly. • Low refrigerant levels may cause failure of • A bad connection may cause water leakage. product.
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Page 7: Installation Of Indoor, Outdoor Unit
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. 2. Select a place where there are no obstacles More than More than 5cm in front of the unit. - Page 8 Installation of Indoor, Outdoor Unit Piping length and elevation Multi Piping Type Outdoor Capacity Total Length Max Length(A/B) Max Elevation (h1) In - In Elevation (h2) (Btu/h) 15+15=30 15+15=30 Pipe Size Indoor Capacity Standard Length Additional Refrigerant (Btu/h) Liquid (g/m) 1/2"...
- Page 9 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.
- Page 10 Flaring Work Piping Connection Flaring Work Piping Connection 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.
- Page 11 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 = Inclined Surface Cracked Uneven...
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Page 12: Connection
Flaring Work Piping Connection Indoor unit installation 1. Hook the indoor unit onto the upper portion of the installation plate.(Engage the two hooks of the rear top of the indoor unit with the Connecting cable upper edge of the installation plate.) Ensure that the hooks are properly seated on the Drain hose installation plate by moving it left and right. - Page 13 Flaring Work Piping Connection 3. Bundle the piping and drain hose together by Wrap with vinyl tape wrapping them with vinyl tape over the range Pipe within which they fit into the rear piping housing section. Vinyl tape(wide) Drain hose CAUTION: Installation Information (For right piping) For right piping, follow the instruction below.
- Page 14 Flaring Work Piping Connection Connection of piping - Outdoor When piping installation work, following indoor units must be used the connector which is in each indoor unit. Indoor Capacity (Btu/h) Liguid Side Ø6.35 Ø9.52 Gas Side Ø12.7 Ø15.88 Align the center of the piping and sufficiently Outdoor unit tighten the flare nut by hand.
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Page 15: Connecting The Cable Between Indoor Unit And Outdoor Unit
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. - Page 16 Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Outdoor unit. 1. Remove the cover control from the unit by Outdoor unit loosening the screw. Connect the wires to the terminals on the control board individually as the following. 2.
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Page 17: Checking The Drainage And Forming The Pipings
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. - Page 18 Checking the Drainage and Forming the Pipings Form the piping Form the piping by wrapping the connecting portion of the indoor unit Seal a small with insulation material and secure it opening around the pipings with Taping with two kinds of vinyl tape. gum type sealer.
- Page 19 Test of the leakage 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.
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Page 20: Vacuum
Test of the leakage Soap water method Outdoor unit 1. Remove the caps from the 2-way and 3-way valves. A-UNIT 2. Remove the service-port cap from the 3-way valve. 3-way valve Gas side piping (Close) 3. To open the 2-way valve turn the valve stem 2-way valve (Open) B-UNIT... -
Page 21: Test Running
Test Running Test Running 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. - Page 22 Test Running PUMP DOWN This is performed when the unit is to be relocated or the refrigerant circuit is Intake temperature serviced. Discharge air Pump Down means collecting all refrigerant in the outdoor unit without loss in refrigerant gas. CAUTION: Be sure to perform Discharge Pump Down procedure with the temperature...