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LG
Room Air Conditioner
INSTALLATION MANUAL
website http://www.lgservice.com
IMPORTANT
• Please read this instruction manual completely before
installing the product.
• When the power cord is damaged, replacement should be
performed by authorized personnel only.
• 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.
LG
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Table of Contents
Related Manuals for LG LS305HV
Summary of Contents for LG LS305HV
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Page 1: Room Air Conditioner
Room Air Conditioner INSTALLATION MANUAL website http://www.lgservice.com IMPORTANT • Please read this instruction manual completely before installing the product. • When the power cord is damaged, replacement should be performed by authorized personnel only. • Installation work must be performed in accordance with the national wiring standards by authorized personnel only. -
Page 2: Table Of Contents
Room Air Conditioner Installation Manual TABLE OF CONTENTS Installation Requirements Safety Precautions...4 Introduction ...7 Symbols used in this manual...7 Features ...7 Installation ...8 Installation parts...8 Installation tools ...8 Installation map...9 Confirm The Refrigerant ...10 Selecting the best location ...11 Piping length and elevation...12 Fixing installation plate...13... -
Page 3: Installation Instructions
Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your finger. When installing... -
Page 4: 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. - Page 5 Do not install the product at a place that there is concern of falling down. • Otherwise, it may result in personal injury. I Operation Do not share the outlet with other appliances. • It will cause an electric shock or a fire due to heat generation.
- Page 6 • Otherwise, it may cause vibration or water leakage. Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent. • The appearance of the air conditioner may deteriorate, change color, or develop surface flaws. Do not place obstacles around the flow inlet or outlet.
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Page 7: 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... -
Page 8: Installation
Type "B" screw Remote control holder Installation Tools Figure Name Figure Name Screw driver Ohmmeter Electric drill Hexagonal wrench Measuring tape, Knife Ammeter Hole core drill Gas-leak detector Thermometer, Spanner Horizontal meter Torque wrench Flaring tool set 8 Room Air Conditioner... -
Page 9: Installation Map
Installation Map NOTICE Installation parts you should purchase. Air Discarge Operation Indication Lamps/ Signal Receptor Forced Operation Button Air Inlet Vents Air Outlet Vents NOTE: refrigerant line wall thickness must be at least 0.8 mm(0.031 inch) Installation plate Sleeve Bushing-Sleeve Putty(Gum Type Sealer) Bend the pipe as closely on the wall as possible,... -
Page 10: Confirm The Refrigerant
R-22 -40.8 Do not handle the pipe by yourself (customer) High-pressure refrigerant may cause personal injury. - manifold gauge ,charging and any piping tools must be dedicated to R-410A systems. 10 Room Air Conditioner 100% Vapor pressure(25°C)(kg f/cnf) 15.9 Vapor density(25°C)(kg/m... -
Page 11: Select The Best Location
3. Do not place animals and plants in the path of the warm air. 4. Take the weight of the air conditioner into account and select a place where noise and vibration are minimum. 5. Select a place where the warm air and noise from the air conditioner do not disturb neighbors. -
Page 12: Piping Length And Elevation
5/8" Indoor unit Outdoor unit Capacity is based on standard length and maximum allowance length is on the basis of reliability. Oil trap should be installed every 5~7 meters(16.4~23.0ft). 12 Room Air Conditioner Standard Length Elevation B m(ft) LIQUID 1/4"... -
Page 13: Fixing Installation Plate
Fixing Installation Plate The wall you select should be strong and solid enough to prevent vibration 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. -
Page 14: Flaring Work
1. Firmly hold copper pipe in a die in the dimension shown in the table below. 2. Carry out flaring work with the flaring tool. Outside diameter inch Ø6.35 Ø9.52 Ø12.7 Ø15.88 Ø19.05 14 Room Air Conditioner Copper pipe Point down Copper tube 1.1~1.3 1.5~1.7 Copper pipe 1.6~1.8 1.6~1.8 1.9~2.1... -
Page 15: Connecting The Piping
Check 1. Compare the flared work with the figure by. 2. If a flared section is defective, cut it off and do flaring work again. Connecting the Piping Indoor 1. Prepare the indoor unit's piping and drain hose for installation through the wall. 2. - Page 16 3. Bundle the piping and drain hose together by wrapping them with vinyl tape for enough to cover where they fit into the rear piping housing section. 16 Room Air Conditioner Indoor unit tubing Torque kg . m 1.8~2.5 3.4~4.2...
- Page 17 For left rear piping 1. Route the indoor tubing and the drain hose to the required piping hole position. 2. Insert the piping, drain hose, and the connecting cable into the piping hole. 3. Insert the connecting cable into the indoor unit. •...
- Page 18 3. Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(clicking sound). 18 Room Air Conditioner Plastic bands Insulation material Connection pipe Vinyl tape...
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Page 19: Good Case
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. Installation Manual 19... - Page 20 • When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench. Outside diameter inch Ø6.35 Ø9.52 Ø12.7 Ø15.88 Ø19.05 20 Room Air Conditioner Outdoor unit Torque kg.m 1.8~2.5 3.4~4.2 5.5~6.6 6.3~8.2 9.9~12.1 Liquid side piping...
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Page 21: Connecting The Cables
Connecting the Cables Indoor 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. - Page 22 • Every wire must be connected firmly. • No wire should be allowed to touch refrigerant tubing, the compressor or any moving parts. 22 Room Air Conditioner Outdoor unit Terminal block Over 5mm (0.2")
- Page 23 According to the confirmation of the above conditions, prepare the wiring as follows. 1. Never fail to have an individual power circuit specifically for the air conditioner. As for the method of wiring, be guided by the circuit diagram posted on the inside of control cover.
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Page 24: Checking The Drainage
1. The drain hose should point downward for easy drain flow. 2. Do not make drain piping like the following. Do not raise Water Water leakage leakage 24 Room Air Conditioner Accumulated drain water Tip of drain hose dipped in water Water Waving leakage... -
Page 25: Forming The Piping
Forming the Piping Form the piping by wrapping the connecting portion of the indoor unit with insulation material and secure it with two kinds of vinyl tapes. • If you want to connect an additional drain hose, the end of the drain outlet should be routed above the ground. -
Page 26: Air Purging
When the system pressure is reduced to normal, disconnect the hose from the cylinder. 26 Room Air Conditioner Indoor unit Charge hose Outdoor unit Nitrogen gas cylinder(in vertical... -
Page 27: Finishing The Job
5. Replace the valve caps at both gas and liquid side service valves and fasten them tight. This completes air purging with a vacuum pump. The air conditioner is now ready to test run. Liquid side 2-way valve (Open) -
Page 28: Test Running
3. Ensure the difference between the intake temperature and the discharge is more than 8°C 4. For reference; the gas side pressure of optimum condition is as below.(Cooling) The air conditioner is now ready for use. 28 Room Air Conditioner Bolt Intake temperature Discharge air... -
Page 29: Pump Down
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. -
Page 30: Installation Guide At The Seaside
3) Select a well-drained place. 1. If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment. 2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water... - Page 31 P/No.: MFL39817301...