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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 : MFL68061201
www.lg.com
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Table of Contents
Related Manuals for LG AUUQ18GHT0
Summary of Contents for LG AUUQ18GHT0
- 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 : MFL68061201...
- 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 cable. Otherwise, it may cause a fire or electrical shock. •...
- Page 5 IMPORTANT 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 ENER- LEAKAGE TEST AND EVACUATION Preparation IMPORTANT SAFETY Leakage test INSTRUCTIONS Evacuation INSTALLATION OF OUT- TEST RUNNING DOOR UNIT FUNCTION Night Silent Operation setting Forced Cooling Operation WIRING CONNECTION SELF-DIAGNOSIS FUNC- Electrical Wiring TION Connecting Cables between Indoor Unit... -
Page 7: Installation Of Out- Door Unit
Elevation B (m) MODEL CAPACITY Refrigerant Liquid Standard Max. Standard Max. (g/m) AUUQ18GHT0 18 kBtu/h Ø 12.7(1/2) Ø 6.35(1/4) AUUW18GHT0 18 kBtu/h Ø 12.7(1/2) Ø 6.35(1/4) AUUQ24GHT0 24 kBtu/h Ø 15.88(5/8) Ø 9.52(3/8) AUUW24GHT0 AUUQ30GHT0 28 kBtu/h Ø 15.88(5/8) Ø 9.52(3/8) - Page 8 INSTALLATION OF OUTDOOR UNIT Ceiling Cassette Pipe Size Length A (m) Elevation B (m) Additional MODEL CAPACITY Refrigerant (g/m) Liquid Standard Max. Standard Max. ATUQ18GPLT0 18 kBtu/h Ø 12.7(1/2) Ø 6.35(1/4) ATUW18GPLT0 18 kBtu/h Ø 12.7(1/2) Ø 6.35(1/4) ATUQ24GNLT0 24 kBtu/h Ø 15.88(5/8) Ø 9.52(3/8) ATUW24GNLT0 ATUQ30GNLT0 28 kBtu/h Ø...
- Page 9 INSTALLATION OF OUTDOOR UNIT Ceiling Concealed Duct Air conditioner Pipe Size Length A (m) Elevation B (m) Additional MODEL CAPACITY Refrigerant (g/m) Liquid Standard Max. Standard Max. ABUQ18GHLT0 18 kBtu/h Ø 12.7(1/2) Ø 6.35(1/4) ABUW18GHLT0 18 kBtu/h Ø 12.7(1/2) Ø 6.35(1/4) ABUQ24GGLT0 24 kBtu/h Ø...
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Page 10: Night Silent Operation Setting
INSTALLATION OF OUTDOOR UNIT Night Silent Operation setting - Open the Side panel or Top Cover of outdoor unit. - Set the SW01N. AUUQ18GHT0/AUUW18GHT0 AUUQ30GHT0/AUUW30GHT0 AUUQ48GHT0/AUUW48GHT0 ABUW48LRLT0/ABUQ48LRLT0 (ATUQ18GPLT0/ATUW18GPLT0) (ATUQ30GNLT0/ATUW30GNLT0) (ATUQ48GMLT0/ATUW48GMLT0) ABUW54LRLT0/ABUQ54LRLT0 (AVUQ18GJLT0/AVUW18GJLT0) (AVUQ30GKLT0/AVUW30GKLT0) (AVUQ48GLLT0/AVUW48GLLT0) (ABUQ18GHLT0/ABUW18GHLT0) (ABUQ30GGLT0/ABUW30GGLT0) (ABUQ48GRLT0/ABUW48GRLT0) AUUQ24GHT0/AUUW24GHT0 AUUQ36GHT0/AUUW36GHT0 AUUQ54GHT0/AUUW54GHT0... -
Page 11: 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 AUUQ18GHT0/AUUW18GHT0 (ATUQ18GPLT0/ATUW18GPLT0) 25 A (AVUQ18GJLT0/AVUW18GJLT0) (ABUQ18GHLT0/ABUW18GHLT0) AUUQ24GHT0/AUUW24GHT0 (ATUQ24GNLT0/ATUW24GNLT0) 25 A (AVUQ24GKLT0/AVUW24GKLT0) -
Page 12: Connecting Cables Between Indoor Unit And Outdoor Unit
The power cable connected to the outdoor unit should be complied with IEC 60245 or HD 22.4 S4 (This equipment shall be provided with a cable set complying with the national regulation. 10±3 mm Model Phase(Ø) Area(mm AUUQ18GHT0/AUUW18GHT0(ATUQ18GPLT0/ATUW18GPLT0) (AVUQ18GJLT0/AVUW18GJLT0)(ABUQ18GHLT0/ABUW18GHLT0) AUUQ24GHT0/AUUW24GHT0(ATUQ24GNLT0/ATUW24GNLT0) (AVUQ24GKLT0/AVUW24GKLT0)(ABUQ24GGLT0/ABUW24GGLT0) AUUQ30GHT0/AUUW30GHT0(ATUQ30GNLT0/ATUW30GNLT0) (AVUQ30GKLT0/AVUW30GKLT0)(ABUQ30GGLT0/ABUW30GGLT0) - Page 13 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 14: 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 cable. Earthing work - Connect the cable of diameter more to the earthing terminal provided in the control box and do earthing. -
Page 15: 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 piping kit accessory or the pipes pur- chased locally. -
Page 16: 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. Continuous Finally, tighten the flare nut with torque wrench until the wrench clicks. - When tightening the flare nut with torque Torque wrench, ensure the direction for tightening wrench... - Page 17 CONNECTING PIPES <Figure 2> When connecting in a downward direction, knock out the knock-out hole of the base pan. (refer to figure 2) Knock-out Base pan <Figure 3> Preventing foreign objects from entering (Figure3) Liquid side piping - Plug the pipe through-holes with putty or insulation material(procured locally)to stop up Gas side piping all gaps,as shown in the figure 3.
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Page 18: 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 19: 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 20: Evacuation
LEAKAGE TEST AND EVACUATION Evacuation - Replace the valve caps at both gas and liquid side service valves and fasten them tight. - Connect the charge hose end described in This completes air purging with a vacuum pump. the preceding steps to the vacuum pump to The air conditioner is now ready to test run. -
Page 21: 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 22 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 23: 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. AUUQ18GHT0/AUUW18GHT0 AUUQ30GHT0/AUUW30GHT0 AUUQ48GHT0/AUUW48GHT0 ABUW48LRLT0/ABUQ48LRLT0 (ATUQ18GPLT0/ATUW18GPLT0) (ATUQ30GNLT0/ATUW30GNLT0) (ATUQ48GMLT0/ATUW48GMLT0) ABUW54LRLT0/ABUQ54LRLT0 (AVUQ18GJLT0/AVUW18GJLT0) (AVUQ30GKLT0/AVUW30GKLT0) (AVUQ48GLLT0/AVUW48GLLT0) (ABUQ18GHLT0/ABUW18GHLT0) (ABUQ30GGLT0/ABUW30GGLT0) (ABUQ48GRLT0/ABUW48GRLT0) AUUQ24GHT0/AUUW24GHT0... -
Page 24: Self-Diagnosis Function
2 Times Ex) Error 21 (DC Peack) LED01G (RED) 1 Sec. 1 Sec. 1 Sec. 1 Time 1 Time 1 Time LED02G (GREEN) 2 Sec. 2 Sec. AUUQ18GHT0/AUUW18GHT0 AUUQ30GHT0/AUUW30GHT0 AUUQ48GHT0/AUUW48GHT0 ABUW48LRLT0/ABUQ48LRLT0 (ATUQ18GPLT0/ATUW18GPLT0) (ATUQ30GNLT0/ATUW30GNLT0) (ATUQ48GMLT0/ATUW48GMLT0) ABUW54LRLT0/ABUQ54LRLT0 (AVUQ18GJLT0/AVUW18GJLT0) (AVUQ30GKLT0/AVUW30GKLT0) (AVUQ48GLLT0/AVUW48GLLT0) (ABUQ18GHLT0/ABUW18GHLT0) (ABUQ30GGLT0/ABUW30GGLT0) (ABUQ48GRLT0/ABUW48GRLT0) - Page 25 INSTALLATION GUIDE AT THE SEASIDE LED 1 LED 2 Indoor Error Code Description (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 26: 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.