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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 : 1WAY CEILING CASSETTE
P/NO : MFL68021603
www.lg.com
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Table of Contents
Related Manuals for LG AT-Q12GULA0
Summary of Contents for LG AT-Q12GULA0
- 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 : 1WAY CEILING CASSETTE www.lg.com P/NO : MFL68021603...
- 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.
- Page 5 IMPORTANT SAFETY INSTRUCTIONS CAUTION Installation • Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant lev- els may cause failure of product. • Install the drain hose to ensure that water is drained away properly. A bad connection may cause water leakage.
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Page 6: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS TIPS FOR SAVING INSTALLATION ENERGY Installation Tools Installation of Indoor, Outdoor Unit Remote Control Preparation IMPORTANT SAFETY INSTRUCTIONS INSTALLATION OF DEC- ORATIVE PANEL(ACCES- INTRODUCTION SORY) Features Indoor Unit Drain Piping Air Purging Test running Installation guide at the seaside... -
Page 7: Introduction
INTRODUCTION INTRODUCTION Features Air Outlet Air Inlet Remote Controller... -
Page 8: Installation
INSTALLATION INSTALLATION 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 Manifold gauges Vacuum pump... -
Page 9: Installation Of Indoor, Outdoor Unit
INSTALLATION Installation of Indoor, Outdoor Outdoor unit - If an awning is built over the unit to prevent Unit direct sunlight or rain exposure, be careful that heat radiation from the condenser is not Selection of the best location restricted. Indoor unit - There should not be any animals or plants which could be affected by hot air dis-... - Page 10 Model refrigerant (g/m) Liquid Standard Max. Standard Max. AT-Q12GULA0 9.52(3/8) 6.35(1/4) Outdoor unit Indoor unit Outdoor unit Indoor unit CAUTION • Rated performance for refrigerant line length of : 5m • Capacity is based on standard length and maximum allowance length is on the basis of relia- bility.
- Page 11 INSTALLATION Ceiling opening dimensions and Ceiling hanging bolt location - The dimensions of the paper model for Level gauge installing are the same as those of the ceiling opening dimensions. - Select and mark the position for fixing bolts and piping hole. - Decide the position for fixing bolts slightly tilted to the drain direction after considering the direction of drain hose.
- Page 12 INSTALLATION NOTE Thoroughly study the following installation locations: In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the turbo fan, the fin of the heat exchanger and the drain pump, resulting in heat exchange reduction, spraying, dispersing of water drops, drain pump malfunction, etc.
- Page 13 INSTALLATION The Indoor Unit Installation Ceiling Keep the length of the bolt Hanging bolt from the bracket to 40mm (W3/8 or M10) Flat washer for M10 (W3/8 or M10) (accessory) Air conditioner body Ceiling board Ceiling board Spring washer (M10) Keep the length of 20~22mm between the air conditioner bottom Flat washer for M10...
- Page 14 INSTALLATION The Outdoor Unit Installation • Anchor the outdoor unit with a bolt and nut tightly and horizontally on a concrete or rigid mount. • When installing on the wall, roof or rooftop, anchor the mounting base securely with a nail or wire assuming the influence of wind and earthquake.
- Page 15 INSTALLATION Remote Controller Installation Although the room temperature sensor is in the indoor unit, the remote controller should be installed in such places away from direct sunlight and high humidity. Installation of the remote controller - Select places that are not splashed with water. - Select control position after receiving customer approval.
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Page 16: Remote Control Preparation
- Remove the control box cover for electrical connection between the indoor and outdoor unit. - Use the cord clamper to fix the cord. 1 Phase Terminal Block of Outdoor Unit Terminal Block of Indoor Unit AT-Q12GULA0 1(L) 2(N) 1(L) 2(N) 3 1(L) - Page 17 Use round pressure terminals for connections Normal to the power terminal block. Model Cross-Sectional Round pressure terminal AT-Q12GULA0 2.5mm (3 wires) Power wire The connecting cable connected to the indoor and outdoor unit should be com- When none are available, follow the instruc- plied with the following specifications tions below.
- Page 18 INSTALLATION CONNECTING THE CABLE TO OUTDOOR UNIT - For wiring, use the designated power wire and connect firmly, then secure to prevent outside Remove the Cover control from the unit by pressure being exerted on the terminal block. loosening a screw. Connect the wires to the terminals on the - Use an appropriate screwdriver for tightening control board individually as following.
- Page 19 INSTALLATION Connecting Pipes to the Indoor Unit Putting nut on - Remove flare nuts attached to indoor and - Preparation of Piping outdoor units, than put them on pipe/tube Main cause of gas leakage is defect in flaring having completed burr removal. work.
- Page 20 INSTALLATION Check Liquid side *Compare the flared work with figure below. *If flare is noted to be defective, cut off the Indoor flared section and do flaring work again. unit - If the piping and the drain hose are in com- Outdoor mon direction bundle the piping and the drain Flare connection...
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Page 21: Installation Of Decorative Panel(Accessory)
INSTALLATION OF DECORATIVE PANEL(ACCESSORY) INSTALLATION OF DECORATIVE PANEL(ACCESSORY) Good example The decorative panel has its installation direction. Before installing the decorative panel, Air conditioner always remove the paper template. unit Ceiling board Open the air outlet vane, and extract side covers. -
Page 22: Indoor Unit Drain Piping
INSTALLATION OF DECORATIVE PANEL(ACCESSORY) Indoor Unit Drain Piping Drain test The air conditioner uses a drain pump to drain - Drain piping must have down-slope (1/50 to water. 1/100): be sure not to provide up-and-down Use the following procedure to test the drain slope to prevent reversal flow. - Page 23 INSTALLATION OF DECORATIVE PANEL(ACCESSORY) HEAT INSULATION Form the pipings - Use the heat insulation material for the Wrap the connecting portion of indoor unit refrigerant piping which has an excellent with the Insulation material and secure it heat-resistance (over 120°C). with two Plastic Bands.
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Page 24: Air Purging
INSTALLATION OF DECORATIVE PANEL(ACCESSORY) Air Purging In case of the Outdoor Unit being installed above position of the Indoor Air purging Unit. The air and moisture remaining in the refriger- ant system have undesirable effects as indi- cated below. Tape the Pipings and Connecting cable - Pressure in the system rises. - Page 25 INSTALLATION OF DECORATIVE PANEL(ACCESSORY) Evacuation CAUTION - If the system is found free from all leakages, relive the nitrogen pressure by loosening the Be sure to use a manifold valve for air charge hose connector at nitrogen cylinder. purging. If it is not available, use a stop Disconnect the hose from cylinder when valve for this purpose.
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Page 26: Test Running
INSTALLATION OF DECORATIVE PANEL(ACCESSORY) - Once the desired vacuum is created. Disconnect the vacuum pump and open the Indoor unit liquid side valve stem by turning it to count- er-clockwise direction with service valve wrench. - Open completely the gas side valve buy turn- ing to counter-clockwise with service valve wrench. - Page 27 INSTALLATION OF DECORATIVE PANEL(ACCESSORY) CHECK THE FOLLOWING ITEMS WHEN Evaluation of the performance INSTALLATION IS COMPLETED - Measure the temperature of the intake and - After completing work, be sure to measure discharge air. and record trial run properties, and store - Ensure the difference between the intake measured data, etc.
- Page 28 INSTALLATION OF DECORATIVE PANEL(ACCESSORY) CAUTION • Confirm that the cable thickness is as specified in the power sources specifi- cation. (Particularly note the relation between cable length and thickness.) • Never fail to equip a leakage breaker where it is wet or moist. •...
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Page 29: Installation Guide At The Seaside
Install the outdoor unit on - If you can’t meet above guide line in the the opposite side of the sea wind direction. seaside installation, please contact LG Electronics for the additional anticorro- sion. - Periodic ( more than once/year ) cleaning...