LG ARNU18GTQB4 Installation Manual
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LG ARNU18GTQB4 Installation Manual

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INSTALLATION MANUAL
AIR
CONDITIONER
Please read this installation manual completely before installing the product.
Please retain this installation manual for future reference after reading it thoroughly.
Ceiling Cassette
Original instruction
MFL68686515
Rev.08_071222
Copyright © 2017 - 2022 LG Electronics Inc. All Rights Reserved.
www.lg.com

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Summary of Contents for LG ARNU18GTQB4

  • Page 1 Please read this installation manual completely before installing the product. Please retain this installation manual for future reference after reading it thoroughly. Ceiling Cassette Original instruction www.lg.com MFL68686515 Copyright © 2017 - 2022 LG Electronics Inc. All Rights Reserved. Rev.08_071222...

  • Page 2: Table Of Contents

    Table of contents TABLE OF CONTENTS INSTALLATION PARTS SAFETY INSTRUCTIONS INSTALLATION Selection of the best location Ceiling dimension and hanging bolt location Wiring Connection Installation of Decoration Panel (4 Way) Installation of Decoration Panel (2 Way) Installation of Decoration Panel (1 Way) Drain Piping Ceiling Height Selection DIP Switch Setting...

  • Page 3: Installation Parts

    Installation Parts Installation Parts Air filter Air filter Intake Air Outlet Intake Air Outlet Wired Remote Controller Wired Remote Controller (Accessory) (Accessory) Air filter Air filter Air Intake Intake Air Outlet Air Outlet Wired Remote Controller Wired Remote Controller (Accessory) (Accessory) Air Outlet Wired Remote Controller...

  • Page 4: Safety Instructions

    Safety Instructions Safety Instructions The following symbols are displayed on indoor and outdoor units. Read the precautions in This appliance is filled this manual carefully with flammable refrigerant before operating the unit. (for R32) This symbol indicates that This symbol indicates that a service personnel the Operation Manual should be handling this...
  • Page 5 Safety Instructions • 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. •...
  • Page 6 Safety Instructions • 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. •...
  • Page 7 Safety Instructions • Do not plug or unplug the power supply plug during operation. - There is risk of fire or electric shock. • Do not touch(operate) the product with wet hands. - There is risk of fire or electrical shock. •...
  • Page 8 Safety Instructions • Be cautious that water could not enter the product. - There is risk of fire, electric shock, or product damage. • Ventilate the product from time to time when operating it together with a stove, etc. - There is risk of fire or electric shock. •...
  • Page 9 Safety Instructions • 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. •...
  • Page 10 Safety Instructions • Do not install the unit in potentially explosive atmospheres. Operation • Do not expose the skin directly to cool air for long periods of time. (Don't sit in the draft.) - This could harm to your health. •...
  • Page 11 Safety Instructions • Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries. - There is risk of fire or explosion. • Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.

  • Page 12: Installation

    Installation Installation Read completely, then follow step by step. Selection of the best location • If the temperature might rise above 30 ℃ or the humidity might rise above RH 80 %, use another insulation to the indoor body. h Use glass wool material or polyethylene foam and make sure at least 10 mm thick. •...
  • Page 13 Installation Minimum floor area (for R32) - The appliance shall be installed, operated and stored in a room with a floor area larger than the minimum area. - Use the graph of table to determine the minimum area. Amin (m Floor standing Wall mounted Ceiling mounted...

  • Page 14: Ceiling Dimension And Hanging Bolt Location

    Installation Ceiling dimension and hanging bolt location • The dimensions of the paper model for installation are the same as those of the ceiling opening dimensions. Ceiling Ceiling board Level gauge 4 Way TQ/TR Chassis TM/TN/TP/TM-A/TP-B Chassis 585~660(Ceiling opening) 875 (Ceiling opening) 787 (Hanging bolt) 840 Unit size Unit:mm...
  • Page 15 Installation Ceiling dimension and hanging bolt location • The dimensions of the paper model for installation are the same as those of the ceiling opening dimensions. Ceiling Ceiling board Level gauge 4 Way TQ/TR Chassis TM/TN/TP/TM-A/TP-B Chassis 585~660(Ceiling opening) 875 (Ceiling opening) 787 (Hanging bolt) 840 Unit size Unit:mm...
  • Page 16 Installation CAUTION • Select and mark the position for fixing bolts and piping hole. • This air-conditioner uses a drain pump. • Decide the position for fixing bolts slightly tilted to the drain • Install the unit horizontally using a level direction after considering the direction of drain hose.
  • Page 17 Installation 4 Way Ceiling Keep the length of the bolt 105 mm(TM, TM-A, TN, TP, TP-B chassis), from the bracket to 40 mm 180 mm(TQ,TR chassis) Air Conditioner body Ceiling board Ceiling board Keep the length of 15 mm(TM, TM-A, TN, TP, TP-B chassis), 31~34 mm(TQ,TR chassis) between the air conditioner bottom surface and the ceiling surface...

  • Page 18: Wiring Connection

    Installation CAUTION • Tighten the nut and bolt to prevent the unit from falling. • When mechanical connectors are reused indoors, sealing parts shall be renewed. (for R32) • When flared joints are reused indoors, the flare part shall be re-fabricated. (for R32) Wiring Connection 4 Way •...
  • Page 19 Installation 4 Way • TQ/TR Chassis Terminal Block of outdoor unit Terminal Block Indoor SODU INTERNET DRY1 DRY2 GND 12 V Outdoor Unit 1(L) 2(N) INDOOR POWER INPUT • TM/TN/TP Chassis Terminal Block Terminal Block Terminal Block Terminal Block of outdoor unit Indoor Indoor Indoor...
  • Page 20 Installation 1 Way • TU/TT Chassis Terminal Block of outdoor unit Outdoor Terminal Block Indoor SODU INTERNET DRY1 DRY2 GND 12 V unit 1(L) 2(N) INDOOR POWER INPUT ※ Resistance measurement position for incorrect wiring. (TY / 4 / 2 / 1 Way) ※...

  • Page 21: Installation Of Decoration Panel (4 Way)

    Installation Installation of Decoration Panel (4 Way) The decoration panel has its installation Before installing the decoration panel, direction. always remove the paper template. 1. Temporarily fix two decoration panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount 10 mm in length.) The fixing screws (hexagon M5 screw) are included the indoor unit box.

  • Page 22: Installation Of Decoration Panel (2 Way)

    Installation Installation of Decoration Panel (2 Way) The decoration panel has its Before installing the decoration panel, installation direction. always remove the paper template. 1. Temporarily fix two decoration panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount 10 mm in length.) The fixing screws (hexagon M5 screw) are included the indoor unit box.

  • Page 23: Installation Of Decoration Panel (1 Way)

    Installation Installation of Decoration Panel (1 Way) The decoration panel has its installation Before installing the decoration panel, direction. always remove the paper template. 1. Open the air outlet vane, and extract side covers. 2. Remove the air inlet panel from the decoration panel. 3.

  • Page 24: Drain Piping

    Installation Drain Piping • Drain piping must have down-slope (1/50 to 1/100): be sure not to Upward Pipe clamp provide up-and-down slope to prevent reversal flow. routing • During drain piping connection, be careful not to exert extra force not allowed on the drain port on the indoor unit.

  • Page 25: Ceiling Height Selection

    Installation Attention 1. Possible drain-head height is up to 700 mm. So, it must be installed below 700 mm. 2. Keep the drain hose downward up to 1/50~1/100 inclination. 1/50~1/100 Prevent any upward flow or reverse flow in any MAX 700 mm part.

  • Page 26: Dip Switch Setting

    Installation DIP Switch Setting 1. Indoor Unit Function Description Setting Off Setting On Default Communication N/A (Default) Cycle N/A (Default) Group Control Selection of Master or Slave Master Slave Dry Contact Mode Selection of Dry Contact Wired/Wireless remote Mode controller Auto Selection of Manual or Auto operation Mode...

  • Page 27: Group Control Setting

    Installation Group Control Setting 1. Group Control 1 n Wired remote controller 1 + Standard Indoor Units LGAP Network System Signal Master Slave Slave Slave 12 V Only connect serial signal and Display Error Message GND lines between indoor units. Master n DIP Switch in PCB ¿...
  • Page 28 Installation h It is possible to connect indoor units since Feb. 2009. h It can be the cause of malfunctions when there is no setting of master and slave. h In case of Group Control, it is possible to use following functions. - Selection of operation, stop or mode - Temperature setting and room temperature check - Current time change...
  • Page 29 Installation 3. Group Control 3 n Mixture connection with indoor units and Fresh Air Intake Unit LGAP Network System Signal Master Slave Master Slave 12 V Display Error Message Display Error Message Master Master h In case of connecting with standard indoor unit and Fresh Air Intake Unit, separate Fresh Air Intake Unit with standard units.
  • Page 30 Installation 4. 2 Remote Control n Wired remote controller 2 + Indoor unit 1 LGAP Network System Slave Slave Slave Signal Master 12 V Display Error Message Master Slave 1. It is possible to connect two wired remote controllers (Max.) with one indoor unit. Set only one indoor unit to Master, set the others to Slave.
  • Page 31 Installation 5. Accessories for group control setting It is possible to set group control by using below accessories. Indoor unit 2 EA + Wired remote controller 1 EA Indoor unit 1 EA + Wired remote controller 2 EA h PZCWRCG3 cable used for connection h PZCWRC2 cable used for connection Slave Master...

  • Page 32: Model Designation

    Installation Model Designation Serial Number Combinations of functions A/B:Basic function L: Neo Plasma(Wall Mounted) C/D: Plasma(Ceiling Cassette) Chassis Name 4 Way : TM, TM-A, TN, TP, TP-B 2 Way : TL, TS 1 Way : TT, TU Round : TY Electrical Ratings 3: 1Ø, 208/230 V, 60 Hz G: 1Ø, 220 - 240 V, 50 Hz/1Ø, 220 V, 60 Hz...
  • Page 33 Indoor Unit...
  • Page 34 LG Electronics Inc. Single Point of Contact (EU/UK) : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands Manufacturer : LG Electronics Inc. 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA UK Importer : LG Electronics U.K. Ltd...

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