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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 : MULTI
P/NO : 3828A20567S
www.lg.com
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Table of Contents
Related Manuals for LG L8UC100BFA2
Summary of Contents for LG L8UC100BFA2
- 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 : MULTI www.lg.com P/NO : 3828A20567S...
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Page 2: Table Of Contents
Multi Type Air Conditioner Installation Manual TABLE OF CONTENTS Required Tools Installation Requirements Installation Parts Provided.........3 Safety Precautions ............4 Installation of Indoor, Outdoor Unit ......7 o Level gauge Select the best location ........7 o Screw driver Piping length and elevation ........9 o Electric drill Refrigerant piping ..........10 o Hole core drill (ø70mm) -
Page 3: Installation Parts Provided
Installation Parts Provided Installation Parts Provided Wall Mounted Type Installation plate Type "B" screws Type "A" screw (6 EA) Type "A" screw (8 EA) Holder Remote Control Outdoor Unit Air Outlet Air Outlet more than more than 25cm 25cm more than more than 25cm 25cm... -
Page 4: Safety Precautions
Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. WARNING This symbol indicates the possibility of death or serious injury. - Page 5 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.
- Page 6 Safety Precautions CAUTION I Installation Always check for gas (refrigerant) leakage after Install the drain hose to ensure that water is installation or repair of product. drained away properly. • Low refrigerant levels may cause failure of • A bad connection may cause water leakage. product.
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Page 7: Installation Of Indoor, Outdoor Unit
Installation of Indoor, Outdoor Unit Installation of Indoor, Outdoor Unit Read completely, then follow step by step. Select the best location 1. Indoor unit Wall mounted Type • Do not have any heat or steam near the unit. More than 100 mm •... - Page 8 Installation of Indoor, Outdoor Unit Ceiling Cassette Type • There should not be any heat source or steam near the unit. • There should not be any obstacles to prevent 20 or more Ceiling the air circulation. Ceiling Board • A place where air circulation in the room will Ceiling Board be good.
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Page 9: Piping Length And Elevation
Total Branch Max Branch Max Elevation Indoor - Indoor Model Total Length Length (A) Pipe Length Pipe Length (h1) Elevation (h2) L8UC100BFA2 L8UH100BFA2 L8UC100BFA3 L8UC150BFA1 Distributor Branch Pipe Non Distributor Type Max Main Pipe Total Branch Max Branch Max Elevation... -
Page 10: Refrigerant Piping
Installation of Indoor, Outdoor Unit Refrigerant piping Perform the work according to the Service Manual or Installation Guide. • Use two spanners when connecting the Flared connection (Union) Indoor refrigerant pipe to the unit. • Make a bend with a radius as large as Use a seemliness tube possible. -
Page 11: Indoor Unit Installation
Installation of Indoor, Outdoor Unit Indoor unit installation Wall Mounted Type 1. Route the indoor tubing and the drain hose in the direction of rear left or right Tape Connecting pipe Drain hose Connecting cable 2. Tape the tubing, drain hose and the connecting cable. - Page 12 Installation of Indoor, Outdoor Unit I Indoor unit installation on installation plate 1. Hook the indoor unit onto the upper portion of Connecting the installation plate.(Engage the two hooks cable of the rear top of the indoor unit with the upper edge of the installation plate.) Ensure Drain hose that the hooks are properly seated on the...
- Page 13 Installation of Indoor, Outdoor Unit 3. Bundle the piping and drain hose together by Wrap with vinyl tape wrapping them with vinyl tape over the range Pipe within which they fit into the rear piping housing section. Vinyl tape(wide) Drain hose CAUTION Installation information (for right piping) for right piping, follow the instruction below.
- Page 14 Installation of Indoor, Outdoor Unit I How to fix installation plate Installation Plate The wall you select should be strong and solid enough to prevent vibration Chassis 1. Mount the installation plate on the wall with Hook type "A" screws. If mounting the unit on a concrete wall, use anchor bolts.
- Page 15 Installation of Indoor, Outdoor Unit Ceiling Concealed Duct Type I Installation of Unit Install the unit above the ceiling correctly. CASE 1 POSITION OF SUSPENSION BOLT • Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. • Apply a filter Accessory at air return hole. (Unit:mm) Dimension F (G) H...
- Page 16 Installation of Indoor, Outdoor Unit • 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.
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Page 17: Caution For Gradient Of Unit And Drain Piping
Installation of Indoor, Outdoor Unit Caution for gradient of unit and drain piping Lay the drain hose with a downward inclination so water will drain out. Thermal insulator • Always lay the drain with downward (Local supply) inclination (1/50 to 1/100). Prevent any upward flow or reverse flow Drainage pipe (Local supply) -
Page 18: Insulation, Others
Installation of Indoor, Outdoor Unit Insulation, others Insulate the joint and tubes completely. THERMAL INSULATION All thermal insulation must comply with local requirement. Union for liquid pipe Thermal insulator for refrigerant pipe (Local supply) Thermal insulator for Refrigerant pipe and thermal piping(Local supply) insulator(Local supply) Hose clip for thermal insulator... -
Page 19: Installation Of Remote Control Box
Installation of Indoor, Outdoor Unit installation of remote control box Install the remote control box and cord correctly. POINT OF REMOTE CONTROLLER INSTALLATION • Although the room temperature sensor is in the indoor unit, the remote control box should be installed in such places away from direct sunlight and high humidity. INSTALLATION OF THE REMOTE CONTROL BOX ROUTING OF THE REMOTE CONTROL CORD •... -
Page 20: Wired Remote Controller Installation
Installation of Indoor, Outdoor Unit Wired remote controller installation • Since the room temperature sensor is in the remote controller, the remote controller box should be installed in a place away from direct sunlight, high humidity and direct supply of cold air to maintain proper space temperature. - Page 21 Installation of Indoor, Outdoor Unit Ceiling Cassette Type • The dimensions of the paper model for installing are the same as those of the ceiling opening dimensions. • Select and mark the position for fixing bolts and piping hole. 600 (Ceiling opening) •...
- Page 22 Installation of Indoor, Outdoor Unit NOTICE • Thoroughly study the following installation locations: 1. 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 23 Installation of Indoor, Outdoor Unit • The following parts is option. • Drill the piping hole on the wall slightly tilted to the Hanging Bolt - W 3/8 or M10 outdoor side using a Ø 70 hole-core drill. - W 3/8 or M10 Spring Washer - M10 Wall Plate Washer...
- Page 24 Installation of Indoor, Outdoor Unit I WIRED REMOTE CONTROL INSTALLATION (PQRCUSA0) 1. Disassemble the remote controller from the installation board. • Use the driver as shown in the right picture and insert it into the hole with the arrow. And then you pull the driver in the front direction, the remote controller will be separated.
- Page 25 Installation of Indoor, Outdoor Unit 6. Use the connecting cable to connect the indoor unit and the remote controller. Check whether the connector is connected correctly. Indoor unit side Connecting cable 7. When the distance between the wired remote controller and the indoor unit is 10m and above, use the extension cable.
- Page 26 Installation of Indoor, Outdoor Unit I Wiring Connection • Open the control box cover and connect the Remote controller cord and Indoor power wires. Remote Controller Cable Connecting Cable Indoor BD unit 26 Multi Type Air Conditioner...
- Page 27 Installation of Indoor, Outdoor Unit I Installation of Decorative Panel The decorative panel has its installation direction. Before installing the decorative panel, always remove the paper template. 1. Remove the packing and take out air inlet grille from front panel. Front grille 2.
- Page 28 Installation of Indoor, Outdoor Unit 5. Fit the corner covers. 6. Open two screws of control panel cover. Screw 7. Connect one display connector and two vane control connectors of front panel to indoor unit PCB. The position marking on PCB is as: Display connector : CN-DISP Vane control connector: CN-VANE 1,2 CN DISP...
- Page 29 Installation of Indoor, Outdoor Unit CAUTION Install certainly the decorative panel. Cool air leakage causes sweating. Water drops fall. Good example Bad example Air conditioner unit Air conditioner Cool air leakage unit (no good) Ceiling Ceiling board board Decorative Decorative panel panel Fit the insulator (this part) and be careful for cool air leakage...
- Page 30 Installation of Indoor, Outdoor Unit CAUTION Flexible drain hose Flexible drain hose The supplied flexible drain hose 1/50~1/100 should not be curved, neither MAX 800mm screwed. The curved or screwed hose may cause a leakage of water. HEAT INSULATION 1. Use the heat insulation material for the refrigerant piping which has an excellent heat- resistance (over 120°C).
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Page 31: Flaring Work And Connection Of Piping
Flaring Work and Connection of Piping Flaring Work and Connection of Piping Flaring work Preparation of Piping Main cause of gas leakage is defect in flaring Copper work. Carry out correct flaring work in the Slanted Uneven Rough tube 90° following procedure. -
Page 32: Piping Connection
Flaring Work and Connection of Piping 5. Check Smooth all round • Compare the flared work with figure below. Inside is shining without scratches • If flare is noted to be defective, cut off the flared section and do flaring work again. = Improper flaring = Inclined Surface... - Page 33 Flaring Work and Connection of Piping 2. Align the center of the pipings and sufficiently Outdoor unit tighten the flare nut by hand B-UNIT 3. Finally, tighten the flare nut with torque Liquid side piping wrench until the wrench clicks. A-UNIT I When tightening the flare nut with torque wrench, ensure the direction for tightening...
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Page 34: Accessory For Installation
Model P/No. Figure Guide 48 kBtu/h 5211A21343D (Contained in L8UC100BFA2 the indoor unit Short tube L8UH100BFA2 48 kBtu/h package) Use short tube shown in case of connecting 48 kBtu/h indoor unit to the outdoor unit of L8UC(H)100BFA2. - Page 35 Flaring Work and Connection of Piping Outdoor unit Indoor unit side side “b” “c” “a” 48k Indoor Outdoor unit L8UC100BFA2 L8UH100BFA2 Outdoor unit Indoor unit side side “b” “c” “a” 48k Indoor Outdoor unit L8UC100BFA3 Installation Manual 35...
- Page 36 Flaring Work and Connection of Piping • Connection of Piping and Wiring for 48 kBtu/h Indoor Unit *Outdoor Uint L8UC150BFA1 Y CONNECTOR (LIQUID PIPING) SOCKET (GAS PIPING) 9.52 12.7 6.35 19.05 DISTRIBUTOR DISTRIBUTOR INDOOR UNIT FEATURE & SIZE INDOOR UNIT 6.35 P/NO:5162A20001K P/NO:5211A22704A...
- Page 37 Flaring Work and Connection of Piping Models: L8UC100BFA2(3), L8UH100BFA2 • CASE 1(4ROOM/CYCLE) Ø12.7/6.35 12 kBtu/h *Outdoor Uint L8UH100BFA2 12 kBtu/h L8UC100BFA2 L8UC100BFA3 PMBD5440L 12 kBtu/h 12 kBtu/h 1 Circuit Ø19.05/9.52 18 kBtu/h 2 Circuit Ø19.05/9.52 12 kBtu/h PMBD5440L 12 kBtu/h Ø12.7/6.35...
- Page 38 Flaring Work and Connection of Piping • CASE 3(2ROOM/CYCLE) Ø15.88/6.35 24 kBtu/h * Outdoor PMBD5420L L8UH100BFA2 L8UC100BFA2 L8UC100BFA3 24 kBtu/h 1 Circuit Ø19.05/9.52 Detail Work 2 Circuit Ø12.7/6.35 Ø19.05/9.52 18 kBtu/h PMBD5420L 36 kBtu/h • CASE 4(1ROOM/CYCLE) Ø15.88/6.35 * Outdoor...
- Page 39 Flaring Work and Connection of Piping Models: L8UC150BFA1 • CASE 1 24 kBtu/h PMBD5430L 48 kBtu/h Ø25.4/Ø12.7 1 Circuit Y branch Detail Work 2 Circuit 18 kBtu/h Ø19.05/9.52 PMBD5430L 48 kBtu/h • CASE 2 18 kBtu/h PMBD5440L 30 kBtu/h Ø25.4/Ø12.7 48 kBtu/h 1 Circuit Y branch...
- Page 40 Flaring Work and Connection of Piping • CASE 3 24 kBtu/h 24 kBtu/h PMBD5440L 24 kBtu/h 1 Circuit 24 kBtu/h Ø25.4/Ø12.7 18 kBtu/h 2 Circuit 18 kBtu/h Ø19.05/Ø9.52 PMBD5440L 18 kBtu/h 18 kBtu/h I Connection between BD and OD unit in case of L8UC150BFA1 In order to connect BD units to L8UC150BFA1 OD unit, the following installation guide should be observed.
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Page 41: Installing The Short Tube(L8Uc100Bfa3 Only)
Flaring Work and Connection of Piping Installing the short tube(L8UC100BFA3 only) PARTS ACCESSORIES • NAME : SHORT TUBE • NAME : INSULATION TUBE • NAME : INSULATION BUTYL • P/NO : 5211A21343E • P/NO : 5410A30055A • P/NO : 5410A20111R 2) INSTALLATION METHOD IN CASE OF LMNC482BRA0 / LMNC48GTMA0 INDOOR... -
Page 42: Connecting The Cable Between Indoor Unit And Outdoor Unit
Connecting the Cable between Indoor Unit and Outdoor Unit Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Indoor unit. Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually according to the outdoor unit connection. -
Page 43: Connect The Cable To The Outdoor Unit
Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Outdoor unit. 1. Remove the cover control from the unit by loosening the screw. Connect the wires to the terminals on the control board individually as the following. 2. -
Page 44: Checking The Drainage, Forming The Pipings And Long Pipe Setting
Checking the Drainage, Forming the Pipings and Long Pipe Setting Checking the Drainage, Forming the Pipings and Long Pipe Setting Checking the drainage To check the drainage. 1. Pour a glass of water on the evaporator. 2. Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit. -
Page 45: Forming The Piping
Checking the Drainage, Forming the Pipings and Long Pipe Setting Forming the piping Form the piping by wrapping the Seal a small connecting portion of the indoor opening around unit with insulation material and the pipings with Plastic gum type sealer. secure it with two kinds of vinyl band Taping... -
Page 46: Air Purging And Evacuation
Air Purging and Evacuation Air Purging and Evacuation Air and moisture remaining in the refrigerant system have undesirable effects as indicated below. 1. Pressure in the system rises. 2. Operating current rises. 3. Cooling(or heating) efficiency drops. 4. Moisture in the refrigerant circuit may freeze and block capillary tubing. 5. -
Page 47: Evacuation
Air Purging and Evacuation Soap water method 1. Remove the caps from the 2-way and 3-way valves. 2. Remove the service-port cap from the 3-way valve. Hexagonal 3. To open the 2-way valve turn the valve stem wrench counterclockwise approximately 90°, wait for about Hexagonal Hexagonal wrench... -
Page 48: Test Running
Test Running Test Running 1. Check that all tubing and wiring have been properly connected. 2. Check that the gas and liquid side service valves are fully open. Prepare remote control Remove the battery cover by pulling it according to the arrow direction. Insert new batteries making sure that the (+) and (–) of battery are installed correctly. -
Page 49: Optional Operation - Duct Types
Optional Operation - Duct Types Optional Operation - Duct Types Group Control It operates maximum 16 Units by only one Wired Remote Controller, and each Unit starts sequentially to prevent overcurrent. Main PCB Indoor Unit 1 Indoor Unit 2 Indoor Unit 16 Terminal(Local Supply) Terminal(Local Supply) Terminal(Local Supply) -
Page 50: E.s.p.(External Static Pressure) Setting
Optional Operation - Duct Types E.S.P.(External Static Pressure) Setting Open the rear cover of the wired remote-controller to set the mode. Select one of three selectable modes as follows. I Without Zone System 1. Position V-H, F-H: • This position sets the maximum E.S.P as a default set. 2. -
Page 51: How To Set E.s.p
Optional Operation - Duct Types How to Set E.S.P? Procedure of RPM change: Ex) External Static pressure is 4mmAq for Model Name "LMNH242BHA0" • To protect the unit, compressor is designed to be off during E.S.P. setting. Push the "On/Off" button. The unit will start. - Page 52 Optional Operation - Duct Types [Table. 1] Static Pressure(mmAq) Model Name Step CMM(CFM) Setting Value High 16.5(583) LMNC182BHA0 14.5(512) LMNH182BHA0 13(459) High 20(706) LMNC242BHA0 18(636 LMNH242BHA0 16(565) High 28(989) LMNC302BGA0 24(848) LMNH302BGA0 20(706) High 32(1 130) LMNC362BGA0 28(989) LMNH362BGA0 24(848) High 45(1 589) 1(43)
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Page 53: Optional Operation - Cst Type
Optional Operation - CST Type Optional Operation - CST Type 1. Two Thermistor System 1. Press the button for 4 seconds to enter the installer setting mode until timer segment display “01:01”. 2. Repeat pressing button to select Function code 04 04:01 Function Code Thermistor setting... - Page 54 Optional Operation - CST Type 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. This function is to adjust FAN Airflow rate according to ceilingheight (only cassette model) 1.
- Page 55 Optional Operation - CST Type 3. Group Setting(Remote Controller) This function is only for group control operation. Please don’t set this function in case of non- group control 1. Press the button for 4 seconds to enter the installer setting mode until timer segment display "01:01".
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Page 56: Combination Of Indoor And Outdoor Unit
Combination of indoor and outdoor unit Combination of indoor and outdoor unit The total capacity index of indoor units is the sum of capacity index of each units and should be within the capacity index of the outdoor unit. 1. The total capacity index of indoor units is the sum of capacity index of each units and should be within the NOTICE maximum capacity index of the outdoor unit. -
Page 57: Installation Guide At The Seaside
3) Select a well-drained place. 1. If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment. 2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water...