LG MULTI V ARNU073B3G4 Installation Manual
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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.
Built - in Duct - Low Static
MFL65003105
Rev.00_051017
Copyright © 2015 - 2018 LG Electronics Inc. All Rights Reserved.
http://www.lghvac.com
www.lg.com
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Summary of Contents for LG MULTI V ARNU073B3G4
- Page 1 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. Built - in Duct - Low Static http://www.lghvac.com www.lg.com MFL65003105 Rev.00_051017 Copyright © 2015 - 2018 LG Electronics Inc. All Rights Reserved.
- Page 2 IMPORTANT! 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. •...
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Page 3: Table Of Contents
Ceiling Concealed Duct - Low Static Type Indoor Unit Installation Manual TABLE OF CONTENTS Installation Requirements Required Parts Required Tools Safety Precautions....4 Introduction......7 o Level gauge Installation o Four type "A" screws o Screw driver o Connecting cable o Electric drill o Hole core drill Selection of the best location ..........8... -
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 classi- fied by the following indications. WARNING This symbol indicates the possibility of death or serious injury. - Page 5 Safety Precautions • 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 •...
- Page 6 Safety Precautions CAUTION 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. •...
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Page 7: Introduction
Introduction Introduction Symbols Used in this Manual This symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that could cause harm to the air conditioner. NOTICE This symbol indicates special notes. Features Built-in Duct type Suction Grille Wired Remote Controller Suction Grille + Suction Canvas... -
Page 8: Installation
Installation Installation Selection of the best location Indoor unit Top view Install the air conditioner in the location that satisfies the fol- [Unit: mm(inch)] Airflow lowing conditions. • The place shall easily bear a load exceeding four times the Inspection hole indoor unit’s weight. -
Page 9: Ceiling Opening Dimension And Hanging Bolt Location
Installation B4: 1,118mm(44 inch) B3: 840mm(33-1/16 inch) B3/B4: 295mm(11-3/5 inch) (Ceiling opening) (Ceiling opening) Ceiling dimension and hanging bolt location 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. -
Page 10: Indoor Unit Installation
Installation Indoor Unit Installation • Select and mark the position for fixing bolts. • Insert the set anchor and washer onto the suspen- • Drill the hole for set anchor on the face of ceiling. sion bolts for locking the suspension bolts on the ceiling. - Page 11 Installation CAUTION : The connecting cable connected to the indoor and outdoor unit should be complied with the fol- lowing specifications (This equipment shall be provided with a cord set complying with the national regulation). 10±3mm AWG18 If the supply cord is damaged, it must be replaced by a special cord or assembly available from the manufacturer of its service agent.
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Page 12: Part Name And Functions
Installation Part name and functions Air outlet Air outlet Suction Grille Suction Grille Suction Canvas • Buit-in duct type with Suction Grille. • Buit-in duct type with Suction Grille and Suction Canvas. n B3/B4 Series : Built-in Duct type Control Box service Indoor Unit... -
Page 13: Plumbing Materials And Storage Methods
Installation Plumbing materials and storage methods 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. Refrigerant piping on three principles Drying Cleanliness... - Page 14 Installation Nitrogen substitution method 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.
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Page 15: Checking The Drainage
Installation INSULATION, OTHERS Insulate the joint and tubes completely. THERMAL INSULATION All thermal insulation must comply with local requirement. INDOOR UNIT Union for gas pipe Refrigerant pipe and thermal Thermal insulator for refrigerant pipe insulator(Local supply) (Local supply) Thermal insulator for piping(Local supply) Hose clip for thermal insulator (Local supply) -
Page 16: Drain Piping
Installation CAUTION 1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner. 2. Minimum thickness of the insulation for the connecting pipe shall be 19mm. Front of view • The unit must be horizontal or declined to the drain hose connected when finished installation. - Page 17 Installation CAUTION : The supplied flexible drain Flexible drain hose Flexible drain hose Flexible drain hose hose should not be curved, neither 1/50~1/100 screwed. The curved or screwed hose MAX 700mm may cause a leakage of water. (27-9/16 inch) 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.
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Page 18: Dip Switch Setting Of Indoor
Installation Dip Switch Setting 1. Indoor Unit Function Description Setting Off Setting On Default Communication N/A (Default) Cycle N/A (Default) Selection of Master or Group Control Master Slave Slave Wired/Wireless remote Dry Contact Selection of Dry controller Auto Mode Contact Mode selection of Manual or Auto operation Mode Fan continuous... -
Page 19: 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 Display Error Message Only connect serial signal and GND lines between indoor units. Master n DIP Switch in PCB ¿... - Page 20 Installation h It is possible to connect indoor units since Feb. 2009. h It can be the cause of malfuctions 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 21 Installation 3. Group Control 3 n Mixture connection with indoor units and Fresh Air Intake Unit LGAP Network System Master Signal Slave Master Slave Master 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 22 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 23 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 Indoor unit 1 EA +Wired remote controller 2EA h PZCWRCG3 cable used for connection h PZCWRC2 cable used for connection S lave Mas te r PZC WRC 2...
- Page 24 Installation ARNU073B3G4+PBSGB30(Accessory), PBSC30(Accessory) ARNU093B3G4+PBSGB30(Accessory), PBSC30(Accessory) ARNU123B3G4+PBSGB30(Accessory), PBSC30(Accessory) ARNU153B3G4+PBSGB30(Accessory), PBSC30(Accessory) [Unit : CMM(cfm)] Static Pressure(mmAq (in.Aq)) Setting Value 0(0) 1(3.93) 2(7.87) 3(0.11) 4(0.15) 6.29(222) 3.03(107) 0.93(32) 6.61(233) 4.84(170) 1.52(53) 7.69(271) 5.64(199) 2.18(76) 0.79(27) 8.19(289) 6.28(221) 2.81(99) 0.85(30) 8.91(314) 7.43(262) 4.96(175) 1.58(55) 9.51(335) 8.14(287) 5.91(208)