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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.
TYPE : Cooling Only Inverter
P/NO : MFL67476601
www.lg.com
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Table of Contents
Related Manuals for LG AUUQ18GH0
Summary of Contents for LG AUUQ18GH0
- 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. TYPE : Cooling Only Inverter www.lg.com P/NO : MFL67476601...
- 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: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE. Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product WARNING It can result in serious injury or death when the directions are ignored CAUTION It can result in minor injury or product damage when the directions are ignored WARNING... - Page 4 IMPORTANT SAFETY INSTRUCTIONS • Do not install the product on a defective installation stand. - It may cause injury, accident, or damage to the product. • Be sure the installation area does not deteriorate with age. - If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
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Page 5: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS TIPS FOR SAVING NIGHT SILENT OPERA- ENERGY TION SETTING IMPORTANT SAFETY SELF-DIAGNOSIS FUNC- INSTRUCTIONS TION INSTALLATION PLACES INSTALLATION GUIDE AT THE SEASIDE PIPING LENGTH AND THE ELEVATION CONNECTING PIPES Preparation of Piping Connecting the pipings to the indoor unit and drain hose to drain pipe Connecting the pipes to the Outdoor unit... -
Page 6: Installation Places
Single Operation Elevation 'B' (m) Additional Pipe Size (mm(inch)) Length 'A' (m) Model Name refrigerant Liquid Min. Max. Min. Max. (g/m) AUUQ18GH0 Ø12.7(1/2) Ø6.35(1/4) AUUQ21GH0 Ø12.7(1/2) Ø6.35(1/4) AUUQ24GH0 Ø15.88(5/8) Ø9.52(3/8) AUUQ36GH0 Ø15.88(5/8) Ø9.52(3/8) If installed tube is shorter than 10 m, additional charging is not necessary. -
Page 7: Connecting Pipes
CONNECTING PIPES CONNECTING PIPES Preparation of Piping Check - Compare the flared work with figure below. Main cause of gas leakage is defect in flaring - If flare is noted to be defective, cut off the work. Carry out correct flaring work in the fol- flared section and do flaring work again. -
Page 8: Connecting The Pipings To The Indoor Unit And Drain Hose To Drain Pipe
CONNECTING PIPES Connecting the pipings to the • Align the center of the piping and sufficiently tighten the flare nut by hand. indoor unit and drain hose to • Finally, tighten the flare nut with torque drain pipe wrench until the wrench clicks. - When tightening the flare nut with torque - Align the center of the pipings and sufficient- wrench, ensure the direction for tightening... -
Page 9: Forming The Piping
CONNECTING PIPES The installation piping is connectable in 3 In cases where the outdoor unit is installed directions.(refer to figure 1) below the indoor unit perform the following. - Tape the piping, drain hose and connecting cable from down to up. <Figure 1>... -
Page 10: 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 11: Evacuation
LEAKAGE TEST AND EVACUATION Evacuation - Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit. Confirm the "Lo and Hi" knob of the manifold valve is open. Then, run the vacuum pump. Indoor unit The operation time for evacuation varies with tubing length and capacity of the pump. -
Page 12: Wiring Connection
- Model of circuit breaker recommended by authorized personnel only - When connecting wiring which is the same thickness, do as shown in the figure below . Model ELCB Phase(Ø) AUUQ18GH0 AUUQ21GH0 AUUQ24GH0 AUUQ36GH0 ELCB Main power source Switch box... -
Page 13: Connecting The Cable To Outdoor Unit
Power cord terminal • Connect the wires according to color codes by referring the wiring diagram. Cord clamp Cover control Tubing Cover AUUQ18GH0 AUUQ21GH0 AUUQ24GH0 Power cord terminal Connecting cable terminal Cord clamp Cord clamp... -
Page 14: Test Running
TEST RUNNING TEST RUNNING Precautions in test running M4..118N.cm{12kgf.cm} M5..196N.cm{20kgf.cm} - The initial power supply must provide at least M6..245N.cm{25kgf.cm} 90% of the rated voltage. M8..588N.cm{60kgf.cm} Otherwise, the air conditioner should not be operated. Connection of power supply CAUTION Connect the power supply cord to the inde- •... - Page 15 TEST RUNNING HAND OVER CAUTION Teach the customer the operation and mainte- After the confirmation of the above condi- nance procedures, using the operation manual tions, prepare the wiring as follows: (air filter cleaning, temperature control, etc.). • Never fail to have an individual power specialized for the air conditioner.
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Page 16: Night Silent Operation Setting
NIGHT SILENT OPERATION SETTING NIGHT SILENT OPERATION SETTING Open the panel of outdoor unit. Set the DIP SW01N as below Fig. DIP Switch2 Function Night Silent Oper- ation -ON Night Silent Oper- ation - OFF Close the panel WARNING • Do not open the panel when operating the product. - Page 17 NIGHT SILENT OPERATION SETTING Error LED 1 LED 2 Indoor Description Code (Red) (Green) status 2times ◑ 1time ◑ DC Peak(IPM Fault) 2times ◑ 2times ◑ Max. CT(CT2) 2times ◑ 3times ◑ DC Link Low Volt. 2times ◑ 4times ◑ Pressure switch/Heater Sink.
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Page 18: Installation Guide At The Seaside
INSTALLATION GUIDE AT THE SEASIDE INSTALLATION GUIDE AT THE SEASIDE In case, to install the outdoor unit on the sea- CAUTION side, 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.