website http://www.lgservice.com INSTALLATION MANUAL ITALIANO LG Casstte Type Air Conditioner ENGLISH LG ESPAÑOL FRANÇAIS DEUTSCH IMPORTANT • 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.
Cassette Type Air Conditioner Installation Manual TABLE OF CONTENTS Installation Requirements Required Parts Required Tools Safety Precautions .....3 Installation of Indoor, Outdoor unit ................6 Ceiling opening dimensions and hanging bolt location..................
Safety Precautions Safety Precautions WARNING This symbol indicates the possibility of death or serious injury. CAUTION This symbol indicates the possibility of injury or damage. ■ Meanings of symbols used in this manual are as shown below. Be sure not to do. Be sure to follow the instruction. WARNING ■ Installation Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.
Safety Precautions Do not modify or extend the power cable. Be cautious when unpacking and installing the product. • There is risk of fire or electric shock. • Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator. For installation, always contact the dealer or an Authorized Service Center. Do not install the product on a defective installation stand. • There is risk of fire, electric shock, explosion, or injury.
Safety Precautions CAUTION Always check for gas (refrigerant) leakage after installation or repair of product. Install the drain hose to ensure that water is drained away properly. • Low refrigerant levels may cause failure of product. • A bad connection may cause water leakage. Keep level even when installing the product. Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. • To avoid vibration or water leakage.
Installation of Indoor, Outdoor Unit Installation of Indoor, Outdoor Unit Selection of the best location Unit:cm Floor 2. Outdoor unit • If an awning is built over the unit to prevent direct sunlight or rain exposure, be careful that heat radiation from the condenser is not restricted. • There should not be any animals or plants which could be affected by hot air discharged. • Ensure the spaces indicated by arrows from the wall, ceiling, fence or other obstacles.
Installation of Indoor, Outdoor Unit Pipe Size (Diameter:Ø) Gas Liquid Standard Max. Standard Max. 12K Btu/h 3/8"(9.52mm) 1/4"(6.35mm) 7.5 15 5 7 20 18K Btu/h 1/2"(12.7mm) 1/4"(6.35mm) 7.5 50 5 30 35 24K Btu/h 1/2"(12.7mm) 1/4"(6.35mm) 7.5 50 5 30 35 30K Btu/h 5/8"(15.88mm) 1/4"(6.35mm) 7.
Ceiling opening dimensions and hanging bolt location Ceiling opening dimensions and hanging bolt location • The dimensions of the paper model for installing are the same as those of the ceiling opening dimensions. 790 (Ceiling opening) 875 (Ceiling opening) 45 785 (Hanging bolt) 840 Unit size 658 (Hanging bolt) 840 Unit size 66 790 (Ceiling opening) 744 Unit size Unit:mm Unit:mm • Select and mark the position for fixing bolts and piping hole.
The Indoor Unit Installation The Indoor Unit Installation Spring washer (M10) Flat washer for M10 (accessory) Ceiling board Flat washer for M10 (accessory) Nut (W3/8 or M10) Air Conditioner body Ceiling board Paper model for installation Adjust the same height • The following parts is option.
Remote Controller Installation Wired Remote Control Installation DISASSEMBLING • Separate the under plate from Remote control box. Front case Th el ow er pa rt Lever carefully the box open using a screw driver, etc. Remote control box body • Fix the under plate on the wall • Fix the cord clamps on the wall by ø 3 tapping screws (accessory). • Fix the remote control cord.
Wiring Connection Wiring Connection Indoor power cord Control box cover Remote controller cord [Air inlet side view] Control box cover screw 18K/24K/30K Btu/h (1Ø) • Cooling & Heating type Terminals on the indoor unit Terminals on the outdoor unit 1(L) 2(N) 1(L) 2(N) 3 4 5 1(L) 2(N) 3 4 5 POWER INPUT CAUTION The power cord connected to the outdoor unit should be complied with the following specifications (Rubber insulation, type H05RN-F approved by HAR or SAA).
Wiring Connection Electrical Wiring 1. All wiring must comply with LOCAL REGULATIONS. 2. Select a power source that is capable of supplying the current required by the air conditioner. 3. Feed the power source to the unit via a distribution switch board designed for this purpose. 4. The terminal screws inside the control box may be loose due to vibration during transport. Check the screws for loose connection. (Running the air conditioner with loose connection can overload and damage electrical components.
Connecting Pipes to the Indoor Unit Connecting Pipes to the Indoor Unit Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure. Copper tube Slanted Uneven Rough 90° 1. Cut the pipes and the cable. • Use the accessory piping kit or the pipes purchased locally. • Measure the distance between the indoor and the outdoor unit. • Cut the pipes a little longer than measured distance. • Cut the cable 1.5m longer than the pipe length.
Connecting Pipes to the Indoor Unit Piping Connection 1. Form the piping according to its routing. Avoid bending and bending back the same piping point more than three times. (This will result in hardening the pipe.) 2. After deforming the piping, align centers of the union fitting of the indoor unit and the piping, and tighten them firmly with wrenches. 3. Connect pipe to the service valve or ball valve which is located below the outdoor unit. 4.
Installation to Decorative Panel Installation to Decorative Panel Before installing the decorative panel, always remove the paper template. 1. Temporarily fix two decorative panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount 10mm in length.) The fixing screws (hexagon M5 screw) are included the decorative panel box. 2. Remove the air inlet grille from the decorative panel. (Remove the hook for the air inlet grille cord.) 3.
Indoor Unit Drain Piping CAUTION: Install certainly the decorative panel. Water drops fall. Cool air leakage causes sweating.
Indoor Unit Drain Piping HEAT INSULATION 2. Precautions in high humidity circumstance: This air conditioner has been tested according to the "KS Standard Conditions with Mist" and confirmed that there is not any default. However, if it is operated for a long time in high humid atmosphere (dew point temperature: more than 23°C), water drops are liable to fall.
Indoor Unit Drain Piping In case of the Outdoor Unit being installed above position of the Indoor Unit. 2. Tape the Pipings and Connecting cable from bottom to top. 3. Form the pipings gathered by taping along the exterior wall, and make the trap prevent water from entering into the room. 4. Fix the pipings onto the wall by saddle or equivalent. 18 Cassette type Air Conditioner Seal a small opening around the pipings with gum type sealer.
Test running 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. Then attention must be paid. Carry out the test run more than 5 minutes without fail.
Test running CAUTION: After the confirmation of the above conditions, prepare the wiring as follows: 1) 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. 2) Provide a circuit breaker switch between power source and the unit.
Optional Operation Optional Operation ENGLISH 1. Two Thermistor System (1) Open the rear cover of the wired remote-controller to set the mode. (2) Select one of three selectable modes as follows. • Position 1: The room temperature is controlled by the thermistor of the main body. • Position 2: The room themperature is controlled by the thermistor of the wired remotecontroller, control the temperature according to the position of wired remotecontroller.
Optional Operation 2. Adjusting air volume to the height of ceiling You can choose the RPM(or air volume) of indoor motor according to the height of ceiling to supply the comfortable atmosphere to consumers. Procedure 1. Choose the selectable position in the table after measuring the height of ceiling. Ceiling height more than 3.3m 2.7~3.3m less than 2.7m Mode of slide switch High Ceiling Standard Low Ceiling Change of air volume Increasing Decreasing Remark Manufactured in standard mode 2.
Optional Operation 3. Group Control(Optional Wiring) Wiring design Main PCB RED(12V) YL(SIGNAL) BR(GND) Indoor Unit 1 Indoor Unit 2 Terminal(Local Supply) Block Connector Terminal(Local Supply) Block Connector RED(12V) YL(SIGNAL) BR(GND) Main PCB #1 YL(SIGNAL) BR(GND) YL(SIGNAL) BR(GND) Indoor Unit 16 Terminal(Local Supply) Block Connector Main PCB #2 .... .... AUTO SWING OPERATION SET TEMP Room Temp Operation unit 03 FAN SPEED HI MED LO Time Timer On Off Set no.
Memo 24 Cassette type Air Conditioner
