LG ARNU483TMC2 Installation Manual

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. INSTALLATION MANUAL AIR CONDITIONER P/NO : MFL42803115 Copyright © 2009 - 2018 LG Electronics Inc. All Rights Reserved. ENGLISH FRANÇAIS ESPAÑOL

The weight of the condensing unit requires caution and proper handling procedures when lifting or moving to avoid personal injury. Use care to avoid contact with sharp or pointed edges. Safety Precautions • Always wear safety eye wear and work gloves when installing equipment. • Never assume electrical power is disconnected. Check with meter and equipment. • Keep hands out of fan areas when power is connected to equipment. • R-410A causes frostbite burns. • R-410A is toxic when burned. NOTE TO INSTALLING DEALER: The Owners Instructions and Warranty are to be given to the owner or prominently displayed near the indoor Furnace/Air Handler Unit. When wiring: Electrical shock can cause severe personal injury or death. Only a qualified, experienced electrician should attempt to wire this system. • Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked. • Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death. • Ground the unit following local electrical codes. • • The choice of materials and installations must comply with the applicable local/national or international standards. Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard. When transporting: Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your finger. When installing... ... in a wall: Make sure the wall is strong enough to hold the unit's weight. It may be necessary to construct a strong wood or metal frame to provide added support. ... in a room: Properly insulate any tubing run inside a room to prevent "sweating" that can cause dripping and water damage to wall and floors. ... in moist or uneven locatinons: Use a raised concrete pad or concrete blocks provide a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration. ... in an area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle. ... in a snowy area(for Heat Pump Model): Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents. When connecting refrigerant tubing • Keep all tubing runs as short as possible. • Use the flare method for connecting tubing. • Check carefully for leaks before starting the test run. When servicing • Turn the power OFF at the main power box(mains) before opening the unit to check or repair electrical parts and wiring. • Keep your fingers and clothing away from any moving parts. • Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced. • Installation or repairs made by unqualified persons can result in hazards to you and others. • The information contained in the manual is intended for use by a qualified service technician familiar with safety procedures and equipped with the proper tools and test instruments. • Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death. Please read this instruction sheet completely before installing the product. This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. Installation of all field wiring and components MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code 70 and the National Building Construction and Safety Code or Canadian Electrical code and National Building Code of Canada.

Ceiling Cassette - 4Way Type Indoor Unit Installation Manual TABLE OF CONTENTS o Installation guide map o Four type "A" screws & plastic anchors o Connecting cable o Pipes: Gas side Liquid side (Refer to Product Data) o Insulation materials o Additional drain pipe o Level gauge o Screw driver o Electric drill o Hole core drill o Horizontal meter o Flaring tool set o Specified torque wrenches (different depending on model No.) o Spanner .......Half union o Hexagonal wrench o Gas-leak detector o Vacuum pump o Gauge manifold o Owner's manual o Thermometer Installation Parts.......................4 Safety Precautions ...................5 Installation.................................8 Selection of the best location...8 Ceiling dimension and hanging bolt location .............................9 Wiring Connection .................10 Plumbing materials and storage methods.................................13 Installation of Decoration Panel .....................................15 Drain Piping...........................16 Dip Switch Setting .................18 Group Control Setting............19 Installation Requirements Required Parts Required Tools ENGLISH

Anti-bacteria filter Air Intake Air Outlet Remote Controller TEMP Installation Parts Name Quantity Shape for gas pipe for liquid pipe Clamp metal 2 EA Insulation for fitting Conduit mounting plate 1 SET 1 EA Drain hose 1 EA Plastic band 8 EA Washer for hanging backet 4 EA (Other) • Paper pattern for installation • Owner's manual • Installation manual

ENGLISH Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. n Be sure to read before installing the air conditioner. n Be sure to observe the cautions specified here as they include important items related to safety. n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. n Meanings of symbols used in this manual are as shown below. This symbol indicates the possibility of death or serious injury. This symbol indicates the possibility of injury or damage to properties only. Be sure not to do. Be sure to follow the instruction. Installation • Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit. - There is risk of fire or electric shock. • For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center. - Do not disassemble or repair the product. There is risk of fire or electric shock. • Always ground the product. - There is risk of fire or electric shock. • Install the panel and the cover of control box securely. - There is risk of fire or electric shock. • Always install a dedicated circuit and breaker. - Improper wiring or installation may cause fire or electric shock. • Use the correctly rated breaker or fuse. - There is risk of fire or electric shock. • Do not modify or extend the power cable. - There is risk of fire or electric shock.

or a window is left open. - Moisture may condense and wet or damage furniture. • Be cautious when unpacking and installing the product. - 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. - There is risk of fire, electric shock, explosion, or injury. • 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. • Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress air or Oxygen and Do not use Flammable gases. Otherwise, it may cause fire or explosion. - There is the risk of death, injury, fire or explosion. Operation • Do not store or use flammable gas or combustibles near the product. - There is risk of fire or failure of product.

ENGLISH Safety Precautions Installation • Always check for gas (refrigerant) leakage after installation or repair of product. - Low refrigerant levels may cause failure of product. • Install the drain hose to ensure that water is drained away properly. - A bad connection may cause water leakage. • Keep level even when installing the product. - To avoid vibration or water leakage. • Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. - It may cause a problem for your neighbors. • Use two or more people to lift and transport the product. - Avoid personal injury. • Do not install the product where it will be exposed to sea wind (salt spray) directly. - It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation. • If you eat the liquid from the batteries, brush your teeth and see doctor. Do not use the remote if the batteries have leaked. - The chemicals in batteries could cause burns or other health hazards.

• There should not be any obstacles to 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. • Ensure the spaces indicated by arrows from the wall, ceiling, or other obstacles. • The indoor unit must have the maintenance space. Read completely, then follow step by step. Ceiling Ceiling Board Ceiling Board Floor Unit:mm(inch) 1000(39-3/8) or more 10(13/32) or more 500(19-11/16) or more 500(19-11/16) or more 300(11-13/16) or less 15(19/32) ±3(1/8) 30(1-3/16) ±3(1/8) * Case of the size [Width : 570(22-7/16)] x [Depth : 570(22-7/16)] * Case of the size [Width : 840(33-1/16)] x [Depth : 840(33-1/16)] “A” “A” Below 36 kBtu(10.6 kW) At least 1800(70-7/8), 3600(141-23/32) or less Over 36k Btu(10.6 kW) At least 1800(70-7/8), 4200(165-11/32) or less Selection of the best location CAUTION : In case that the unit is installed near the sea, the installation parts may be corroded by salt. The installation parts (and the unit) should be taken appropriate anti-corrosion measures. CAUTION : Don't install additional ventilation products on the cabinet of cas- sette type air conditioner. h Please use an annexed sheet or the corrugated cardboard on the bottom of packing as installa- tion sheet. h When using the bottom sheet, please use it after separating the installation sheet from packing of the product floor by using a knife etc as a picture below. Annexed sheet Or Packing corrugated cardboard on the bottom Installation

ENGLISH Installation Ceiling dimension and hanging bolt location Level gauge Ceiling Ceiling board Unit:mm(inch) 570(22-7/16) Unit size 570(22-7/16) Unit size 450(17-11/16) (Hanging bolt) 75(3) 75(3) 600(23-5/8) (Ceiling opening) 600(23-5/8) (Ceiling opening) 521(20-1/2)(Hanging bolt) 39.5(1-9/16) 39.5(1-9/16) TE Chassis TQ/TR Chassis TM/TN/TP Chassis Unit:mm(inch) Unit:mm(inch) 875(34-7/16) (Ceiling opening) 787(30-15/16) (Hanging bolt)bolt) 684(26-15/16)(Hanging bolt) 671(26-7/16) 875(34-7/16) (Ceiling opening) 840(33-1/16) Unit size 840(33-1/16) Unit size 585~660(20-3/8~26)(Ceiling opening) 517(23) 461(18-1/8) 517(23) 585~660(20-3/8~26) (Ceiling opening) 523(20-9/16) 570(22-7/16) 570(22-7/16) 319(12-9/16) 319(12-9/16) 319(12-9/16) • The dimensions of the paper model for installation are the same as those of the ceiling opening dimensions. • Avoid the following installation location. 1. Such places as restaurants and kitchen where considerable amount of oil steam and flour is generated. These may cause heat exchange efficiency reduction, or water drops, drain pump mal-function. In these cases, take the following actions; • Make sure that ventilation fan is enough to cover all noxious gases from this place. • Ensure enough distance from the cooking room to install the air conditioner in such a place where it may not suck oily steam. 2. Avoid installng air conditioner in such places where cooking oil or iron powder is generated. 3. Avoid places where inflammable gas is generated. 4. Avoid place where noxious gas is generated. 5. Avoid places near high frequency generators. CAUTION : • This air-conditioner uses a drain pump. • Install the unit horizontally using a level gauge. • During the installation, care should be taken not to damage electric wires. • 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 bolt on the wall. Use the ventilation fan for smoke-collecting hood with sufficient capacity. Cooking table Air conditioner Take enough distance

paper model (4 pieces) Paper model for installation Ceiling board 105 mm(4-1/8 inch, TM/TN/TP chassis) 108 mm(4-1/4 inch, TM/TN/TP chassis) Ceiling board Ceiling Flat washer for M10 (accessory) Keep the length of the bolt from the bracket to 40 mm(1-1/2 inch) Open the ceiling board along the outer edge of the paper model Flat washer for M10 (accessory) Hanging bolt (W3/8 or M10) Nut (W3/8 or M10) Nut (W3/8 or M10) Spring washer (M10) Air Conditioner body Keep the length of 15 mm (19/32 inch, TM/TN/TP chassis) (TM,TN,TP chassis), 31~34 mm (1-7/32~1-11/32 inch)(TQ,TR chassis) between the air conditioner bottom surface and the ceiling surface • The following parts are local purchasing. ①Hanging Bolt - W 3/8 or M10 ②Nut - W 3/8 or M10 ③Spring Washer - M10 ④Plate Washer - M10 Terminal Block Indoor 1(L1) 2(L2) 3(A) 4(B) 3(A) 4(B) INDOOR POWER INPUT A - - - - B A B A B GND 12V DRY2 DRY1 INTERNET IDU SODU Outdoor Unit • TR/TQ/TE Chassis • TM/TN/TP Chassis COMMUNICATION LINE(IDU-ODU) Terminal Block Indoor Terminal Block Indoor 1(L1) 2(L2) Terminal Block Indoor RD YL 5(A) 5(B) BK POWER INPUT TO AIR FRESH KIT A B A - - - - B A B GND 12V DRY2 DRY1 INTERNET IDU SODU Outdoor Unit power cord Indoor cord Remote control cord 1(L1) 2(L2) • Open the control box cover and connect the remote control cord and Indoor power wires. Wiring Connection WARNING : Make sure that the screws of the terminal are free from looseness. CAUTION : Tighten the nut and bolt to prevent unit from falling off.

ENGLISH Installation 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 posted on the inside of control box cover. 2) Provide a circuit breaker switch between power source and the unit. 3) The screws which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation. Check them and make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the wires.) 4) Specification of power source 5) Confirm that electrical capacity is sufficient. 6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate. 7) Confirm that the cable thickness is as specified in the power sources specification. (Particularly note the relation between cable length and thickness.) 8) Never fail to equip a leakage breaker where it is wet or moist. 9) The following troubles would be caused by voltage drop-down. • Vibration of a magnetic switch, damage on the contact point, fuse breaking, disturbance by the nor- mal function of an overload protection device. • Proper starting power is not given to the compressor. HAND OVER Teach the customer the operation and maintenance procedures, using the operation manual. (air filter cleaning, temperature control, etc.) WARNING : Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazzard may also exist. Therefore, be sure all wiring is tightly connected. Connection method of the connecting cable(Example) Lock nut Conduit mounting plate Conduit 1(L1) 2(L2) Power Supply High Voltage (208/230V) 1(L1) 2(L2)

lowing specifications (This equipment shall be provided with a cord set complying with the national regulation). If the supply cord is damaged, it must be replaced by a special cord or assembly available from the manufacturer of its service agent. u Precautions when laying power and ground wiring Use round pressure terminals for connections to the power terminal block. When laying ground wiring, you must use round pressure terminals. 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. • For wiring, use the designated power wire and connect firmly, then secure to prevent outside pressure being exerted on the terminal block. • Use an appropriate screwdriver for tightening the terinal screws. A screwdriver with a small head will strip the head and make proper tighterning impossible. • Over-tightening the terminal screws may break them. AWG18 20mm 35±5mm GN/YL 10±3mm Round pressure terminal Power wire(Ground wire)

Installation ENGLISH Pipe must be able to obtain the specified thickness and should be used with low impurities. Also when handling storage, pipe must be careful to prevent a fracture, deformity and wound. Should not be mixed with contaminations such as dust, moisture. Plumbing materials and storage methods Refrigerant piping on three principles Drying Cleanliness Airtight Should be no moisture inside No dust inside. There is no refrigerant leakage Items Moisture Dust Leakage Cause fail- ure - Significant hydrolysis of refrigerant oil - Degradation of refrigerant oil - Poor insulation of the compressor - Do not cold and warm - Clogging of EEV, Capillary - Degradation of refrigerant oil - Poor insulation of the compressor - Do not cold and warm - Clogging of EEV, Capillary - Gas shortages - Degradation of refrigerant oil - Poor insulation of the compressor - Do not cold and warm Countermea sure - No moisture in the pipe - Until the connection is completed, the plumbing pipe entrance should be strictly controlled. - Stop plumbing at rainy day. - Pipe entrance should be taken side or bottom. - When removal burr after cutting pipe, pipe entrance should be taken down. - Pipe entrance should be fitted cap when pass through the walls. - No dust in the pipe. - Until the connection is completed, the plumbing pipe entrance should be strictly controlled. - Pipe entrance should be taken side or bottom. - When removal burr after cutting pipe, pipe entrance should be taken down. - Pipe entrance should be fitted cap when pass through the walls. - Airtightness test should be. - Brazing operations to comply with standards. - Flare to comply with standards. - Flange connections to comply with standards.

Welding, as when heating without nitrogen substitution a large amount of the oxide film is formed on the internal piping. The oxide film is a caused by clogging EEV, Capillary, oil hole of accumulator and suction hole of oil pump in compressor. It prevents normal operation of the compressor. In order to avoid this problem, Welding should be done after replacing air by nitrogen gas. When welding plumbing pipe, the work is required. ◆How to work Regulator Nitrogen gas Pressure 0.02 MPa less Auxiliary valve Taping (Should not contain air) Welding Point Oxide scale Nitrogen Note) should not block the outlet side. When the internal pressure in pipe is above the atmospheric pressure, pinhole is occurred and it is a leakage cause. CAUTION : 1. Always use the nitrogen.(not use oxygen, carbon dioxide, and a Chevron gas): Please use the following nitrogen pressure 0.02 MPa Oxygen --------- Promotes oxidative degradation of refrigerant oil. Because it is flammable, it is strictly prohibited to use Carbon dioxide --- Degrade the drying characteristics of gas Chevron Gas ---- Toxic gas occurs when exposed to direct flame. 2. Always use a pressure reducing valve. 3. Please do not use commercially available antioxidant. The residual material seems to be the oxide scale is observed. In fact, due to the organic acids generated by oxidation of the alcohol contained in the anti-oxidants, ants nest corrosion occurs. (causes of organic acid →alcohol + copper + water + temperature)

ENGLISH Installation 1. Temporarily fix two decoration panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount 10 mm(3/8 inch) in length. The fixing screws (hexagon M5 screw) are included the indoor unit box. 2. Remove the air inlet grille from the decoration panel. (Remove the hook for the air inlet grille cord.) 3. Hook the decoration panel key hole ( ) on the screws fixed in step above, and slide the panel so that the screws reach the key hole edge. 4. Retighten completely two temporarily fixed screws and other two screws. (Total 4 screws) 5. Connect the louver motor connector and display connector. 6. After tightening these screws, install the air inlet grille (including the air filter). Decoration panel fixing screws (hexagon M5 screws) Temporally fitting at 2 places (Tightening about 10 mm) Air conditioner unit Decoration panel Control box cover Piping side Louver motor Display Lead wire for louver motor and display Decoration panel fixing screws (Hexagon M5 screw) Inlet Grille Inlet Grille Inlet Grille The decoration panel has its installation direction. Before installing the decoration panel, always remove the paper template. Air conditioner unit Ceiling board Decoration panel Decoration panel Fit the insulator (this part) and be careful for cool air leakage Good example Air Cool air leakage (no good) Bad example Ceiling board Air conditioner unit Installation of Decoration Panel CAUTION : Install certainly the deco- ration panel. Cool air leakage causes sweating. ⇨Water drops fall.

provide up-and-down slope to prevent reversal flow. • During drain piping connection, be careful not to exert extra force on the drain port on the indoor unit. • The outside diameter of the drain connection on the indoor unit is 32 mm(1-1/4 inch). • Be sure to install heat insulation on the drain piping. Piping material: Polyvinyl chloride pipe inner diometes Ø 25 mm(1 inch) and pipe fittings The air conditioner uses a drain pump to drain water. Use the following procedure to test the drain pump operation: • Connect the main drain pipe to the exterior and leave it provisionally until the test comes to an end. • Feed water to the flexible drain hose and check the piping for leakage. • Be sure to check the drain pump for normal operating and noise when electrical wiring is complete. • When the test is complete, connect the flexi- ble drain hose to the drain port on the indoor unit. Heat insulation material: Polyethylene foam with thick- ness more than 8 mm(5/16 inch). Drain test Maintenance drain port Upward routing not allowed Pipe clamp Indoor unit 1/50~1/100 Flexible drain hose • TE : 700 mm (27-9/16 inch) • TM/TN/TP : 800 mm (31-12 inch) MAX Feed water Drain Pump Drain pan Flexible drain hose (accessory) Main drain pipe Glue the joint Drain port Drain hose connection Use the clip (accessory) Flexible drain hose 1/50~1/100 Flexible drain hose Flexible drain hose Flexible drain hose • TE : 700 mm (27-9/16 inch) • TM/TN/TP : 800 mm (31-12 inch) MAX Drain Piping CAUTION : The supplied flexible drain hose should not be curved, neither screwed. The curved or screwed hose may cause a leakage of water. Installation

ENGLISH Installation Attention 1. Possible drain-head height is up to 700 mm (27- 9/16 inch). So, it must be installed below 700 mm (27-9/16 inch). 2. Keep the drain hose downward up to 1/50~1/100 inclination. Prevent any upward flow or reverse flow in any part. 3. 5mm or thicker formed thermal insulator is provid- ed for the drain pipe. 4. Upward routing is not allowed. 5. Be sure to check the drain pump for normal opera- tion and abnormal noise when electrical wiring is complete. 1/50~1/100 MAX 700 mm (27-9/16 inch) Elbow Drain pump Unit Drain pipe (Local supply) Thermal insulator (Local supply) Wall Drain hose

For Multi V Models, Dip switch 1, 2, 6, 8 must be set OFF. Function Description Setting Off Setting On Default SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 Communication Cycle Group Control Dry Contact Mode Installation Heater linkage Ventilator linkage Vane selection (Console) Region selection Etc. N/A (Default) N/A (Default) Selection of Master or Slave Selection of Dry Contact Mode Fan continuous operation N/A Selection of Ventilator link- age Selection of up/down side Vane Selection tropical region Spare - - Master Wired/Wireless remote controller Selection of Manual or Auto operation Mode Continuous operation Removall - Linkage Removal Up side + Down side Vane General model - - - Slave Auto - - Working Up side Vane Only Tropical model - Off Off Off Off Off Off Off Off 18 Indoor Unit Installation

Installation ENGLISH Group Control Setting Wired remote controller 1 + Standard Indoor Units Dip Switch in PCB (Cassette and Duct Type indoor units) 1. It is possible to 16 indoor units(Max) by one wired remote controller. Set only one indoor unit to Master, set the others to Slave. 2. It is possible to connect with every type of indoor units. 3. It is possible to use wireless remote controller at the same time. 4. It is possible to connect with Dry Contact and Central controller at the same time. GND Signal 12 V Master Slave Slave Slave Master Display Error Message Only connect serial signal and GND lines between slave indoor unit LGAP Network System - No. 3 Off - No. 3 On - The Master indoor unit is possible to recognize Dry Contact and Central Controller only. - In case of Central controller and Group controller at the same time, it is possible to connect standard 2series indoor units or later since Feb. 2009. - In case of Central controller setting, the Central controller can control indoor units after setting only the address of master indoor unit. - Slave indoor unit will be operated like master indoor unit. - Slave indoor unit can not be individually controlled by Central controller. - Some remote controller can’t perform with Dry Contact and Central controller at the same time. So contact us further information about it. 1. Group Control 1

Wired remote controllers + Standard Indoor Units It is possible to control N indoor units by wired remote controller M units. (M+N≤17 Units) Set only one indoor unit to Master, set the others to Slave. Set only one wired remote controller to Master, set the others to Slave. Other than those, it is same with the Group Control 1. GND Signal 12 V Slave Slave Slave Master Donʼt connect serial 12V line LGAP Network System 6. In case of Group Control, it is possible to use following functions. - Selection of operation options (operation/stop/mode/set temperature) - Control of flow rate (High/Middle/Low) - It is not possible at some functions. Master/Slave setting of indoor units be set possible using a PCB Dip Switch. It is possible to connect indoor units since Feb. 2009. In the other cases, please contact LGE. It can be the cause of malfuctions when there is no setting of master and slave. 5. In case of any error occurs at indoor unit, display on the wired remote controller. Exception of the error indoor unit, an individual indoor unit control possibility. Slave Display Error Message Master 2. Group Control 2

Installation ENGLISH Mixture connection with indoor units and Fresh Air Intake Unit In case of connecting with standard indoor unit and Fresh Intake Unit, separate Fresh Air Intake Unit with standard units. (Because setting temperature are different.) Other than those, it is same with Group Control 1. GND Signal 12 V LGAP Network System Display Error Message FAU Master FAU Slave Master Master Master Slave FAU Standard Standard FAU FAU Standard Standard FAU * FAU : Fresh Air Intake Unit Standard: Standard Indoor Unit 3. Group Control 3

1. It is possible to connect two wired remote controllers with one indoor unit. 2. Every types of indoor unit is possible to connect two remote controller. 3. It is possible to use wireless remote controller at the same time. 4. It is possible to connect with Dry Contact and Central controller at the same time. 5. In case of any error occurs at indoor unit, display on the wired remote controller. 6. There isnʼt limits of indoor unit function. LGAP Network System Display Error Message Master Master Slave ❈ Maximum 2wired remote controllers can be connected with 1 indoor unit. 4. 2 Remote Control Slave Master Master PZCWRC G3 Master Slave PZCWRC 2 Indoor unit 2 EA +Wired remote controller ❈ PZCWRCG3 cable used for connection ❈ PZCWRC2 cable used for connection Indoor unit 1 EA +Wired remote controller 2EA It is possible to set group control by using below accessories. 5. Accessories for group control setting • Apply totally enclosed noncombustible conduit in case of local building code Requiring plenum cable usage.

provided by them. CANADA Service call Number # : (888) LG Canada, (888) 542-2623 Numéro pour les appels de service : LG Canada, 1-888-542-2623