website http://www.lgservice.com INSTALLATION MANUAL ITALIANO LG 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.
Air Conditioner Installation Manual TABLE OF CONTENTS Installation Requirements Required Parts Required Tools Safety Precautions .....3 Installation of Indoor, Outdoor unit ................6 The indoor unit installation...................9 • Connecting cable • Level • Four Type "A" Screw • Screw driver • Hanging Bolt (W 3/8 or M10 length 650mm) • Electric drill • Hole core drill (ø70mm) Remote controller installation.................23 Wiring connection ....
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 50 or more Above 250 330 or less 50 or more Ceiling Board 30 or less Ceiling Ceiling Board 100 or more • There should not be any heat source or steam near the unit. • There should not be any obstacles to prevent the air circulation. • A place where air circulation in the room will be good. • A place where drainage can be easily obtained.
Installation of Indoor, Outdoor Unit Convertible type More than 20cm More than 20cm R ENGLISH • There should not be any heat source or steam near the unit. • There should not be any obstacles to prevent the air circulation. • A place where air circulation in the room will be good. • A place where drainage can be easily obtained. • A place where noise prevention is taken into consideration. • Do not install the unit near the door way.
Installation of Indoor, Outdoor Unit 3. Piping length and the elevation Install the branch pipe so that pipe length and difference between high and low will not exceed below SPEC. Branch L2 L3 L4 h2 L5 h1 b Pipe Length(m) Total(Main+Branch) Main Pipe(L1) Branch Pipe----Total Each In out (h1) In-In (h2) L1+L2/L3/L4/L5 Indoor-Indoor_(b) Spec. 110 50 60 15 30 1 65 10 Main (L1) • When installing the branch pipe, direction and angle of installation is not limited.
The indoor unit installation The indoor unit installation • 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 Ceiling Nut (W3/8 or M10) 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.
The Indoor Unit Installation 2. Duct type CASE 1 ENGLISH A POSITION OF SUSPENSION BOLT B C E • Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. • Apply a filter Accessory at air return hole. (Unit:mm) A Capacity B C D E F (G) H D Dimension I 30 87 750 163 30K/36K BTU/h 1232 1182 355 45.5 450 30 87 830 186 48K/60K 1292 1230 477 BTU/h I 932 880 355 45.
The Indoor Unit Installation • Select and mark the position for fixing bolts. • Drill the hole for set anchor on the face of ceiling. • Insert the set anchor and washer onto the suspension bolts for locking the suspension bolts on the ceiling. • Mount the suspension bolts to the set anchor firmly. • Secure the installation plates onto the suspension bolts (adjust level roughly) using nuts, washers and spring washers.
The Indoor Unit Installation CAUTION Front of view • The unit must be horizontal or declined to the drain hose connected when finished installation. 1~3mm Ceiling CORRECT INCORRECT Drainage hole CAUTION FOR GRADIENT OF UNIT AND DRAIN PIPING Drainage hole Lay the drain hose with a downward inclination so water will drain out. • Always lay the drain with downward inclination (1/50 to 1/100). Prevent any upward flow or reverse flow in any part.
The Indoor Unit Installation 3. Convertible type ■ Before Installing, prepare Installation Plates • 'Installation Plates' are attached at the bottom of indoor unit. Detach them by removing each 3 screws at both sides. • Detach 'Side Plate (R,L)' by removing each 2 screws on both sides. • Pull the upper right and left side of 'Inlet Grille' to the front, and it will stop at slightly tilted position. • Unhook the 'Inlet hanger' from the 'Hanger screw' on the both left and right side.
The Indoor Unit Installation 1) Anchor nut Ceiling Nut ENGLISH • Insert the nuts and washer onto the suspension bolts for locking the suspension bolts on the ceiling. • Mount the suspension bolts to the anchor-nuts firmly. • Secure the Installation plates onto the Suspension bolts (adjust level roughly.) using nuts, washers and spring washers. Washer Suspension bolts Suspension bolts Spring washer Max.
The Indoor Unit Installation CAUTION 1. Install declination of the indoor unit is very important for the drain of the convertible type air conditioner. 2. Minimum thickness of the insulation for the connecting pipe shall be 7mm. 3. If the Installation Plates are fixed to horizontal line, the indoor unit after installing will be declined to the bottomside. Front of view • The unit must be horizontal or declined to the drain hose connected when finished installation.
The Indoor Unit Installation • Secure the unit to the Installation Plates with four M8 bolts and washers. ENGLISH R • Before working, refer to "Connecting pipe to Indoor Unit" on page 21. • Hook up the Inlet Grille Hook to the cabinet. • Hang the Inlet Hanger to the screw. Inlet hanger R Hook Cabinet Bottom • Fit the projection hooks of the side plates to the 'Side Panel' and the 'Front Panel' by lifting it. • Fasten the screws.
The Indoor Unit Installation Installation on the Wall • 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. • Drill the hole for anchor nut on the wall. 107 6 mo re t 260han 265 • Drill the piping hole on the wall slightly tilted to the outdoor side using a ø70 hole-core drill.
The Indoor Unit Installation Install the Indoor unit onto Installation Plate. • Insert 2 hooks on the both left and right side of the unit to the inner slot (wall side) of the Installation Plate. Inner slot ENGLISH • Secure the unit to the Installation Plate with four M8 bolts and washers. R • Before working, refer to "Connecting pipe and cable to Indoor Unit" on page 21. • Hook up the Inlet Grille Hook to the cabinet. • Hang the Inlet Hanger to the screw.
The Indoor Unit Installation Installation on the floor From the left wall more than 760mm Installation of Mount Bracket. • Select and mark the position for Mount Brackets and the piping hole. • Drill the hole for the anchor nut on the wall. • Drill the piping hole using a ø70 hole-core drill. • Secure the Mount Brackets on the wall with four M4 screws. Install the indoor unit onto the Mount Brackets. • Engage the slot at the back of the unit with Mount Bracket.
The Indoor Unit Installation Installation on the ceiling (Connecting the pipes to the indoor unit) R 2 1. For the Right Side Piping • After bending an end of the connecting tube, align the center of the pipings and sufficiently tighten the flare nut with fingers. • Finally, tighten the flare nut with torque wrench until the wrench clicks. • Connect the Drain Hose insulated to the drain outlet. Drain hose should be go through under the Hose Bracket as shown in figure .
The Indoor Unit Installation Installation on the wall or floor (Connecting the pipes to the indoor unit) 1. For the Right Rear Piping • Remove the knock-out at the back side of the cabinet. • After bending an end of the connecting tube, align the center of the pipings and sufficiently tighten the flare nut with fingers. • Finally, tighten the flare nut with torque wrench until the wrench clicks. • Connect the Drain Hose insulated to the drain outlet.
Remote Controller Installation Wired Remote Controller Installation • Separate the under plate from Remote control box. Front case Th el ow er Lever carefully the box open using a screw driver, etc. pa rt Remote control box body • Fix the cord clamps on the wall by ø 3 tapping screws (accessory). • Fix the remote control cord.
Wiring Connection Wiring Connection • Open the control box cover and connect the Remote controller cord and Indoor power wires. Indoor power cord Control box cover Remote controller cord [Air inlet side view] Control box cover screw Terminal Block (Outdoor Unit) Terminal Block (Indoor Unit) 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). NORMAL CROSS-SECTIONAL AREA 5.
Wiring Connection Electrical Wiring CAUTION: • The circuit diagram is not subject to change without notice. • Be sure to connect wires according to the wiring diagram. • Connect the wires firmly, so that not to be pulled out easily. • Connect the wires according to color codes by referring the wiring diagram. Main power source Circuit Breaker Use a 50A circuit breaker or time delay fuse. Air Conditioner Connecting the cable to Outdoor Unit 1.
Connecting Pipes to the Indoor Unit Connecting Pipes to the Indoor Unit Preparation of Piping 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 Welding Elbow Welding Elbow Outdoor unit (72Kbtu/h) Welding Elbow Outdoor unit(100Kbtu/h) Vacuum drying After completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit. The vacuum drying must be carried out using the service ports of both the liquid and gas side valves. CAUTION: Use two wrenches and tighten with regular torque. Union Ø6.35mm Ø9.52mm Ø12.7mm Ø15.88mm Ø19.
Installation to Decorative Panel Installation to Decorative Panel The decorative panel has its installation direction. 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 1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C). 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 1. Tape the piping and connecting cable from down to up. 2. Secure the taped piping along the exterior wall. Form a trap to prevent water entering the room. 3. Fix the piping onto the wall by saddle or equivalent. Seal a small opening around the pipings with gum type sealer. Trap Trap Installation Manual 31 ENGLISH In cases where the Outdoor unit is installed above the Indoor unit perform the following.
Test running Test running 1. 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. Then attention must be paid. Carry out the test run more than 5 minutes without fail.
Test running HAND OVER Teach the customer the operation and maintenance procedures, using the operation manual (air filter cleaning, temperature control, etc.). Installation Manual 33 ENGLISH 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.
Optional Operation Optional Operation 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 (Cassette type) 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. In the case of changing the height as "high" or "low", open the rear cover of the wired remotecontroller. 3.
Optional Operation 3. E.S.P.(External Static Pressure) Setting (Duct type) (1) Open the rear cover of the wired remote-controller to set the mode. (2) Select one of three selectable modes as follows. ■ Without Zone System 1. Position V-H, F-H: • This position sets the maximum E.S.P as a default set. 2. Position V-L: • This position sets the minimum E.S.P as a default set. ■ With Zone System 1. Position V-H: • Maximum E.S.P setting & Fan speed is varied according to the state of dampers by micom. 2.
Optional Operation 4. How to Set E.S.P? Procedure of RPM change: • To protect the unit, compressor is designed to be off during E.S.P. setting. 1 Push the "On/Off" button. The unit will start. AUTO SWING OPERATION SET TEMP FAN SPEED Room Temp AUTO Heater Preheat JET Defrost Humidify Filter Out door ZONE 1 2 3 4 Time Timer Operation unit On Off Set no. Time 01 2 03 Program set 05 07 09 11 13 15 17 19 21 23 Push the "Timer" and "Wind" button simultaneously for more then 3 seconds.
Optional Operation [Table. 1] Static Pressure(mmAq) Model Name 18K 24K 30K 36K 48K 60K 0 2 4 6 8 Step CMM(CFM) High 16.5(583) 235 230 225 215 180 Med 14.5(512) 245 238 235 230 215 Low 13(459) 254 252 248 245 240 High 18(636) 220 205 190 50 1 Med 16.5(583) 235 230 220 200 100 210 10 12 14 15 Setting Value Low 14(494) 250 240 235 230 High 26.
Optional Operation 5. Outdoor Unit PCB Setting Procedure Main PCB LED01T TEST_SW1 JIG_SW ZONE SW1 A 1 2 3 C 4 ❈ Work procedure 1) Set JIG_SW and ZONE SW1 correctly. B 2) Turn on main power. Fig.a Outdoor PCB diagram 1. JIG_SW Setting Check the JIG_SW to the right, or not set the JIG_SW to the right.( 2. ZONE SW1 Setting Set the ZONE SW1 as below Table.a ( ) ❈ S/W1 is not used. ❈ 1 means S/W up.0 means S/W down. 3) Press the TEST_SW1 for about 3 seconds ) within 3minutes After main power on.
