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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 : MFL67448518
www.lg.com
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Table of Contents
Related Manuals for LG AUUQ18GH2
Summary of Contents for LG AUUQ18GH2
- 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 : MFL67448518...
- 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 Operation • Do not share the outlet with other appliances. It will cause an electric shock or a fire due to heat generation. • Do not use the damaged power cord. Otherwise, it may cause a fire or electrical shock. •...
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Page 5: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS TIPS FOR SAVING ENERGY LEAKAGE TEST AND EVACUATION Preparation IMPORTANT SAFETY Leakage test INSTRUCTIONS Evacuation INSTALLATION OF OUT- TEST RUNNING DOOR UNIT Night Silent Operation setting FUNCTION Forced Cooling Operation WIRING CONNECTION Electrical Wiring SELF-DIAGNOSIS FUNC- Connecting Cables between Indoor Unit and Outdoor Unit... -
Page 6: Installation Of Outdoor Unit
Piping length and the elevation Free Joint Single Outdoor Additional Pipe Size Length A (m) Elevation B (m) MODEL CAPACITY Refrigerant Liquid Standard Max. Standard Max. (g/m) AUUQ18GH2 Ø12.7(1/2) Ø6.35(1/4) AUUQ24GH2 Ø15.88(5/8) Ø9.52(3/8) AUUQ36GH2 10kW Ø15.88(5/8) Ø9.52(3/8) AUUQ48GH2 13.4kW Ø15.88(5/8) Ø9.52(3/8) AUUQ54GH2 15.8kW... - Page 7 INSTALLATION OF OUTDOOR UNIT Ceiling Cassette Additional Pipe Size Length A (m) Elevation B (m) MODEL CAPACITY Refrigerant Liquid Standard Max. Standard Max. (g/m) ATUQ18GPLE5 Ø12.7(1/2) Ø6.35(1/4) ATUQ18GQLE5 ATUQ24GPLE5 Ø15.88(5/8) Ø9.52(3/8) ATUQ24GQLE5 ATUQ36GPLE5 10kW Ø15.88(5/8) Ø9.52(3/8) ATUQ48GMLE5 13.4kW Ø15.88(5/8) Ø9.52(3/8) ATUQ54GMLE5 15.8kW Ø19.05(3/4) Ø9.52(3/8)
- Page 8 INSTALLATION OF OUTDOOR UNIT If installed tube is shorter than 15 m, additional charging is not necessary. Additional Refrigerant = (A -15) x Additional refrigerant (g) Indoor unit Outdoor unit Indoor unit Outdoor unit CAUTION • Capacity is based on standard length and maximum allowance length is on the basis of reliability.
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Page 9: Night Silent Operation Setting
INSTALLATION OF OUTDOOR UNIT Night Silent Operation setting - Open the Side panel or Top Cover of outdoor unit. - Set the SW1 or DIP-SW01D. Step 1 9 10 Step 2 9 10 DIP–SW01D 9 10 AUUQ36GH2 AUUQ48GH2 / AUUQ54GH2 ATUQ36GPLE5 ATUQ48GMLE5 / ATUQ54GMLE5 ABUQ36GM2A2... -
Page 10: Wiring Connection
A disconnection device to ade- quately disconnect all supply lines must be fitted. - Model of circuit breaker recommended by authorized personnel only Model Phase(Ø) ELCB AUUQ18GH2 ATUQ18GPLE5 / ATUQ18GQLE5 ABUQ18GM1A2 / ABUQ18GL2A1 / ABUQ18GL2R1 AVUQ18GJLA2 AUUQ24GH2 ATUQ24GPLE5 / ATUQ24GQLE5 ABUQ24GM1A2 / ABUQ24GL3A1 AVUQ24GJLA2... -
Page 11: Connecting Cables Between Indoor Unit And Outdoor Unit
The power cord connected to the outdoor unit should be complied withIEC 60245 or HD 22.4 S4 (This equipment shall be provided with a cord set complying with the national regulation. Model Phase(Ø) Area(mm AUUQ18GH2 / ATUQ18GPLE5 / ATUQ18GQLE5 ABUQ18GM1A2 / ABUQ18GL2A1 / AVUQ18GJLA2 / ABUQ18GL2R1 10±3mm AUUQ24GH2 / ATUQ24GPLE5 / ATUQ24GQLE5... - Page 12 WIRING CONNECTION Precautions when laying power wiring Use round pressure terminals for connections to the power terminal block. Power wire Round pressure terminal When none are available, follow the instructions below. - Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power wiring may cause abnormal heat.) - When connecting wiring which is the same thickness, do as shown in the figure below.
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Page 13: 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 14: Connecting Pipes
CONNECTING PIPES CONNECTING PIPES Preparation of Piping Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure. Cut the pipes and the cable. - Use the accessory piping kit or the pipes pur- chased locally. -
Page 15: Connecting The Pipes To The Outdoor Unit
CONNECTING PIPES Connecting the pipes to the Outdoor unit Align the center of the piping and sufficiently tighten the flare nut by hand. Finally, tighten the flare nut with torque wrench until the wrench clicks. - When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench. -
Page 16: Forming The Piping
CONNECTING PIPES Forming the piping In cases where the outdoor unit is installed above the indoor unit perform the following. Form the piping by wrapping the connecting Tape the piping and connecting cable from portion of the indoor unit with insulation mate- down to up. -
Page 17: 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 18: Evacuation
LEAKAGE TEST AND EVACUATION Evacuation Indoor unit - 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. The operation time for evacuation varies with Outdoor unit tubing length and capacity of the pump. -
Page 19: Test Running
TEST RUNNING TEST RUNNING Precautions In Test Running - The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner should not be operated. CAUTION For test run, carry out the cooling operation firstly even during heating season. If heating operation is carried out firstly, it leads to the trouble of compressor. - Page 20 TEST RUNNING CAUTION After the confirmation of the above conditions, prepare the wiring as follows: Never fail to have an individual power specialized for the air conditioner. As for the method of wiring, be guided by the circuit diagram pasted on the inside of control box cover.
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Page 21: Function
FUNCTION FUNCTION Forced Cooling Operation Adding the refrigerant in winter. Setting Procedure - Set the Dip Switch as follow after shutting the power source down. 9 10 AUUQ36GH2 AUUQ48GH2 / AUUQ54GH2 ATUQ36GPLE5 ATUQ48GMLE5 / ATUQ54GMLE5 ABUQ36GM2A2 ABUQ48GM3A2 / ABUQ54GM3A2 AVUQ36GKLA2 AVUQ48GLLA2 / AVUQ54GLLA2 APUQ36GRA2 APUQ48GTA2... -
Page 22: Self-Diagnosis Function
Ex) Error 21 (DC Peak) 1 Sec. 1 Sec. 1 Sec. 2 Sec. 2 Sec. AUUQ18GH2 / AUUQ24GH2 / ATUQ18GPLE5 / ATUQ24GPLE5 ATUQ18GQLE5 / ATUQ24GQLE5 / ABUQ18GM1A2 / ABUQ24GM1A2 AVUQ18GJLA2 / AVUQ24GJLA2 / ABUQ18GL2A1 / ABUQ24GL3A1 ABUQ18GL2R1 2 Times 2 Times... - Page 23 SELF-DIAGNOSIS FUNCTION (Red) (Red) Indoor Error Code Description status LED 1 LED 2 (Red) (Green) 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 24: Installation Guide At The Seaside
INSTALLATION GUIDE AT THE SEASIDE INSTALLATION GUIDE AT THE SEASIDE In case, to install the outdoor unit on the CAUTION 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 25 Model Name Remark ABUQ18GL2R1 Indoor : ABNQ18GL2A1 Pasts of Corrosion Resistance Part that contacts Barrier & Motor Bracket corrosive air Epoxy + polyester : 120μ ± 20μ Part that passes Front/Side/Top/Rear Panel & Supporter through the Base Pan corrosive air It is recommended that the outdoor unit is located over 300 m from the sea.