Table of Contents
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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.
Standard Inverter
Copyright © 2017 - 2020 LG Electronics Inc. All Rights Reserved.
www.lghvac.com
www.lg.com
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Table of Contents
Related Manuals for LG LUU420HHV
Summary of Contents for LG LUU420HHV
- Page 1 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. Standard Inverter www.lghvac.com www.lg.com Copyright © 2017 - 2020 LG Electronics Inc. All Rights Reserved.
- Page 2 TIPS FOR SAVING ENERGY TIPS FOR SAVING ENERGY Here are some tips that will help you minimize the power consumption when you use the air conditioner. You can use your air conditioner more efficiently by referring to the instructions below: •...
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Page 3: Safety Instructions
SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or incorrect operation of the appliance. The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below. This symbol is displayed to indicate matters and operations that can cause risk. Read the part with this symbol carefully and follow the instructions in order to avoid risk. - Page 4 SAFETY INSTRUCTIONS • Use caution when unpacking and installing. - Sharp edges may cause injury. • Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress air or Oxygen and Do not use Flammable gases. Otherwise, it may cause fire or explosion. There is the risk of death, injury, fire or explosion.
- Page 5 SAFETY INSTRUCTIONS CAUTION Installation • Install the drain hose to ensure that drain can be securely done. - Otherwise, it may cause water leakage. • Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to the neighbors.
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Page 6: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS TIPS FOR SAVING ENERGY SAFETY INSTRUCTIONS INSTALLATION OF OUTDOOR UNIT Installation Places Piping length and the elevation WIRING CONNECTION Electrical Wiring Connecting Cables between Indoor Unit and Outdoor Unit Connecting the cable to Outdoor Unit CONNECTING COPPER PIPES Preparation of Piping Plumbing materials and storage methods... -
Page 7: Installation Of Outdoor Unit
INSTALLATION OF OUTDOOR UNIT INSTALLATION OF OUTDOOR UNIT Installation Places - If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted. - Ensure that the spaces indicated by arrows More than around front, back and side of the unit. -
Page 8: Wiring Connection
WIRING CONNECTION WIRING CONNECTION Electrical Wiring Connecting Cables between Indoor Unit and Outdoor Unit - All wiring must comply with local requirements. - Select a power source that is capable of Outdoor Indoor supplying the current required by the air unit unit conditioner. - Page 9 WIRING CONNECTION Precautions when laying power and ground wiring Use round pressure terminals for connections to the power terminal block. When laying ground wiring, you must use round pressure terminals. Round pressure terminal Power wire (Ground wire) When none are available, follow the instructions below.
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Page 10: Connecting The Cable To Outdoor Unit
WIRING CONNECTION Connecting the cable to Outdoor Unit - Remove the side panel for wiring connection. - Use the cord clamp to fix the cord. - Earthing work Connect the cable of diameter more to the earthing terminal provided in the control box and do earthing. -
Page 11: Connecting Copper Pipes
CONNECTING COPPER PIPES CONNECTING COPPER PIPES Preparation of Piping Flaring work - Firmly hold copper tube in a bar(or die) as Main cause of gas leakage is defect in flaring indicated dimension in the table above. work. Carry out correct flaring work in the - Carry out flaring work using dedicated flaring following procedure. -
Page 12: Plumbing Materials And Storage Methods
CONNECTING COPPER PIPES NOTE Always blow nitrogen into pipe which is brazed. Always use a non-oxidizing brazing material for brazing the parts and do not use flux. If not, oxidized film can cause clogging or damage to the compressor unit and flux can harm the copper piping or refrigerant oil. Refrigerant piping Taping Pipe to be brazed... -
Page 13: Connecting The Pipes To The Outdoor Unit
CONNECTING COPPER PIPES - When connecting in a downward direction, Connecting the pipes to the knock out the knock-out hole of the base Outdoor unit pan. (refer to figure 2) - Align the center of the piping and sufficiently <Figure 2> tighten the flare nut by hand. -
Page 14: Forming The Piping
CONNECTING COPPER PIPES In cases where the outdoor unit is installed Forming the piping above the indoor unit perform the Form the piping by wrapping the following. connecting portion of the indoor unit with Tape the piping and connecting cable from insulation material and secure it with two down to up. -
Page 15: Leakage Test And Evacuation
LEAKAGE TEST AND EVACUATION LEAKAGE TEST AND EVACUATION Air and moisture remaining in the refrigerant CAUTION system have undesirable effects as indicated below. • To avoid nitrogen entering the refrigerant Pressure in the system rises. system in a liquid state, the top of the cylinder must be higher than its bottom Operating current rises. -
Page 16: Evacuation
LEAKAGE TEST AND EVACUATION Evacuation Connect the charge hose end described in Indoor unit the preceding steps to the vacuum pump to Outdoor unit evacuate the tubing and indoor unit. Confirm the "Lo and Hi" knob of the manifold valve is open. Then, run the vacuum pump. -
Page 17: Test Running
TEST RUNNING TEST RUNNING Precautions in test running M4..118 N·cm (10.4 lbs·inch) - The initial power supply must provide at least M5..196 N·cm (17.3 lbs·inch) 90 % of the rated voltage. M6..245 N·cm (21.7 lbs·inch) Otherwise, the air conditioner should not be M8..588 N·cm (52 lbs·inch) operated. -
Page 18: Function
FUNCTION FUNCTION Pump Down Setting Procedure Set the DIP Switch as follow after shutting the power source down. 24k (4.5kW Controller) 24k (4kW Controller) Reset the power. Red LED and Green LED of PCB lights during work. (The indoor unit is operated by force.) If operation is done, Red LED will be turned off. -
Page 19: Self-Diagnosis Function
SELF-DIAGNOSIS FUNCTION SELF-DIAGNOSIS FUNCTION Error Indicator (Outdoor) Outdoor Error Ex) Error 21 (DC Peak) 2 Times 2 Times 2 Times LED01G (RED) 1 Time 1 Time 1 Time LED02G (GREEN) 24k (4kW Controller) (4.5kW Controller) Error Code Description LED 1 (Red) LED 2 (Green) Indoor status 2 times ◑... -
Page 20: Dip S/W Setting
SELF-DIAGNOSIS FUNCTION DIP S/W Setting If you set the DIP Switch when power is on, the change in setting is not applicable. The changing setting is enabled only when Power is reset. DIP Switch 24k (4.5kW Function 24k (4kW Controller) Controller) 1 2 3 4 5 1 2 3 4 5 1 2... -
Page 21: Installation Guide At The Seaside
INSTALLATION GUIDE AT THE SEASIDE INSTALLATION GUIDE AT THE SEASIDE In case, to install the outdoor unit on the NOTE seaside, set up a windbreak not to be exposed to the sea wind. • Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced. -
Page 22: Seasonal Wind And Cautions In Winter
SEASONAL WIND AND CAUTIONS IN WINTER SEASONAL WIND AND CAUTIONS IN WINTER - Sufficient measures are required in a snow area or severe cold area in winter so that product can be operated well. - Get ready for seasonal wind or snow in winter even in other areas. - Install a suction and discharge duct not to let in snow or rain. - Page 24 Please call the installing contractor of your product, as warranty service will be provided by them. Service call Number # : (888) LG Canada, (888) 542-2623 CANADA Numéro pour les appels de service : LG Canada, 1-888-542-2623...