LG A4UQ28GFA0 Installation Manual
  1. Manuals
  2. Brands
  3. LG Manuals
  4. Air Conditioner
  5. A4UQ28GFA0
  6. Installation manual

LG A4UQ28GFA0 Installation Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
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
MFL67452303
Rev.01_032019
Copyright © 2012 - 2019 LG Electronics Inc. All Rights Reserved.
www.lg.com

Advertisement

Table of Contents
loading

Related Manuals for LG A4UQ28GFA0

Summary of Contents for LG A4UQ28GFA0

  • 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. TYPE : MULTI www.lg.com MFL67452303 Rev.01_032019 Copyright © 2012 - 2019 LG Electronics Inc. All Rights Reserved.
  • Page 2 TIPS FOR SAVING ENERGY TIPS FOR SAVING ENERGY Here are some tips that will help you minimize the power consumption when you use the air conditioner. You can use your air conditioner more efficiently by referring to the instructions below: •...
  • Page 3 IMPORTANT SAFETY INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE. Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product WARNING It can result in serious injury or death when the directions are ignored CAUTION It can result in minor injury or product damage when the directions are ignored WARNING...
  • Page 4 IMPORTANT SAFETY INSTRUCTIONS • When installing the unit, use the installation kit provided with the product. Otherwise the unit may fall and cause severe injury. • Indoor/outdoor wiring connections must be secured tightly and the cable should be routed properly so that there is no force pulling the cable from the connection terminals. Improper or loose connections can cause heat generation or fire.
  • Page 5 IMPORTANT SAFETY INSTRUCTIONS • Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant levels may cause failure of product. • Please install safely at a place that can sufficiently endure the weight of the product. (If the strength is not sufficient, the product may fall and cause injury.) •...

  • Page 6: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS TIPS FOR SAVING ENERGY INSTALLATION INSTALLATION OF INDOOR, OUTDOOR UNIT Foundation for Installation Fixing Installation Plate Select the best location Piping length and elevation Refrigerant charge INSTALLATION OF WIRED REMOTE CONTROLLER Wired remote controller installation FLARING WORK AND CONNECTION OF PIPING Flaring work Connection of piping - Indoor...

  • Page 7: Installation

    INSTALLATION INSTALLATION Installation Parts Name Quantity Shape Installation plate 1 EA The feature can be changed according a type of model. Type "A" screw 5 EA Type "B" screw 2 EA Type "C" screw 2 EA Remote control 1 EA holder Installation Tools Figure...

  • Page 8: Installation Of Indoor, Outdoor Unit

    INSTALLATION OF INDOOR, OUTDOOR UNIT INSTALLATION OF INDOOR, OUTDOOR UNIT Foundation for Installation • Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installation. • Fix the unit securely by means of the foundation bolts. (Prepare 4sets of M12 foundation bolts, nuts and washers each which are available on the market.) •...

  • Page 9: Fixing Installation Plate

    INSTALLATION OF INDOOR, OUTDOOR UNIT Fixing Installation Plate Capacity Indoor Type Type (kBtu/h) The wall you select should be strong and solid enough to prevent vibration Wall mounted 9,12 Mount the installation plate on the wall /ART COOL with type "A" screws. If mounting the unit 18, 24 Mirror on a concrete wall, use anchor bolts.

  • Page 10: Select The Best Location

    INSTALLATION OF INDOOR, OUTDOOR UNIT Read completely, then follow step by step. Outdoor unit You need to select adequate installation location considering the following conditions, and make - If an awning is built over the unit to prevent sure to acquire the consent of the user. direct sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted.

  • Page 11: Piping Length And Elevation

    Elevation Capacity(kBtu/h) Total Length Max Length(A/B) (h1) (h2) 30 or 50* 60 or 70** * : A3UQ18GFA0 only , ** : A4UQ28GFA0 Only Distributor type Models (Unit: m) Capacity Max Main Pipe Total Branch Max Branch Max Elevation In - In Elevation...

  • Page 12: Refrigerant Charge

    Model 18 k 26 k 30 k 36 k Total Piping Length(m) 200 g* * : A4UQ28GFA0 only (X : No addition, - : Not applied) Distributor type Models (Unit: m) Main Piping length Branch piping length Model Additional Additional...

  • Page 13: Installation Of Wired Remote Controller

    INSTALLATION OF WIRED REMOTE CONTROLLER INSTALLATION OF WIRED REMOTE CONTROLLER Please fix tightly using provided screw after placing remote controller setup board on the place where you like to setup. - Please set it up not to bend because poor setup could take place if setup board bends. Please set up remote controller board fit to the reclamation box if there is a reclamation box.
  • Page 14 INSTALLATION OF WIRED REMOTE CONTROLLER Please connect indoor unit and remote controller using connection cable. Please check if connector is normally connected. Indoor Unit side Connecting cable Please use extension cable if the distance between wired remote controller and indoor unit is more than 10 m.

  • Page 15: Wired Remote Controller Installation

    INSTALLATION OF WIRED REMOTE CONTROLLER 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 16: Flaring Work And Connection Of Piping

    FLARING WORK AND CONNECTION OF PIPING FLARING WORK AND CONNECTION OF PIPING Flaring work Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. Cut the pipes and the cable - Use the piping kit accessory or the pipes purchased locally.

  • Page 17: Connection Of Piping - Indoor

    FLARING WORK AND CONNECTION OF PIPING 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 18 FLARING WORK AND CONNECTION OF PIPING Indoor unit installation Hook the indoor unit onto the upper portion of the installation plate.(Engage the two hooks of Connecting the rear top of the indoor unit with the upper edge of the installation plate.) Ensure that the hooks are properly seated on the installation Drain hose plate by moving it left and right.

  • Page 19: Connection Of Piping - Outdoor

    FLARING WORK AND CONNECTION OF PIPING - Bundle the piping and drain hose together by Wrap with vinyl tape wrapping them with vinyl tape over the Pipe range 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 20 FLARING WORK AND CONNECTION OF PIPING - For the units with capacity more than 48 kBtu/h, the installation piping is connectable in four directions.(refer to figure 1) Continuous - When connecting in a downward direction, knock out the knockout hole of the base pan. (refer to figure 2) Preventing foreign objects from entering (Figure3)
  • Page 21 FLARING WORK AND CONNECTION OF PIPING Branch [unit:mm] Model Gas Pipe Liquid Pipe Ø 15.88 Ø 15.88 Ø 9.52 Ø 9.52 PMBL3620 Ø 15.88 Ø 9.52 Y branch Ⓐ To Outdoor Unit Ⓑ To BD Unit Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.) Horizontal Facing upwards plane...

  • Page 22: Installation

    FLARING WORK AND CONNECTION OF PIPING Installation - This unit may be installed suspended from the ceiling or mounted on the wall. - This unit may only be installed horizontally , as shown in the diagram below.(Side B is facing up) However, it may be freely installed in any direction forward or back, and to the sides.

  • Page 23: Installation Of The Main Unit

    FLARING WORK AND CONNECTION OF PIPING Installation of The Main Unit Install a hexagon nut and a flat washer (locally-procured)to the hanging bolt as shown in the figure in the left, and lift the (1) Ceiling-suspended type main unit to hang on the hanger metal. After checking with a level that the unit is level, tighten the hexagon nut.

  • Page 24: 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 25: Connect The Cable To The Outdoor Unit

    CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT Connect the cable to the Outdoor unit Outdoor unit 1 Remove the cover control from the unit by loosening the screw. Terminal block Connect the wires to the terminals on the control board individually as the following.
  • Page 26 CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT Precautions when laying power wiring Use round pressure terminals for connections to the power terminal block. Power wire Round pressure terminal 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.

  • Page 27: Connection Of Wiring

    CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT Connection of Wiring Remove the control cover. Loosen the two screws, and slide the cover in the direction - Connect refrigerant pipes and connection of the arrow. wires to the appropriate ports maked with matching alphabets (A, B and C) on this unit.

  • Page 28: Checking The Drainage And Forming The Pipings

    CHECKING THE DRAINAGE AND FORMING THE PIPINGS CHECKING THE DRAINAGE AND FORMING THE PIPINGS Checking the Drainage Do not make drain piping. To check the drainage. Pour a glass of water on the evaporator. Do not raise Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit.

  • Page 29: Forming The Piping

    CHECKING THE DRAINAGE AND FORMING THE PIPINGS Forming the Piping In cases where the Outdoor unit is installed above the Indoor unit perform the following. Form the piping by wrapping the connecting Tape the piping and connecting cable from portion of the indoor unit with insulation down to up.

  • Page 30: Air Purging And Evacuation

    AIR PURGING AND EVACUATION AIR PURGING AND EVACUATION CAUTION The air and moisture remaining in the refrigerant system have undesirable effects as indicated below. To avoid nitrogen entering the refrigerant - Pressure in the system rises. system in a liquid state, the top of the cylinder must be higher than its bottom - Operating current rises.

  • Page 31: Evacuation

    AIR PURGING AND EVACUATION WARNING - Replace the valve caps at both gas and liquid side service valves and fasten them tight. Use a vacuum pump or Inert (nitrogen) This completes air purging with a vacuum pump. gas when doing leakage test or air purge. The air conditioner is now ready to test run.

  • Page 32: Installation Pi485

    Fix the PI485 PCB as shown in Fig. Detailed installation method refer to PI485 Installation Manual. 26 k 26k(A4UQ28GFA0 only) 30 / 36 k This label is should be applied in the location This label is should be applied in the location...

  • Page 33: Test Running

    TEST RUNNING TEST RUNNING - Check that all tubing and wiring have been - For reference, the gas side pressure of properly connected. optimum condition is as below.(Cooling) - Check that the gas and liquid side service valves are fully open. Outside The pressure of Refrigerant...

  • Page 34: Function

    FUNCTION FUNCTION DIP S/W Setting If you set the DIP Switch when power is on, the change in setting is not applicable. The changing setting is enabled only when Power is reset. DIP Switch Function Normal Operation (No Function) Forced Cooling Operation Wiring Error Check Saving Power Consumption (Step 1) Saving Power Consumption (Step 2)

  • Page 35: Forced Cooling Operation

    FUNCTION 18 / 26 k (Type A) 30 / 36 k 40 / 48 / 54 k DIP SW2 DIP-SW 18 k (Type B) Forced Cooling Operation Adding the refrigerant in winter. Setting Procedure Set the DIP Switch as follow after shutting the power source down.

  • Page 36: Wiring Error Check

    FUNCTION CAUTION Wiring Error Check You can check whether or not the wiring is correct. • If Indoor unit doesn’t communicate to outdoor Unit, function could not be Setting Procedure operated correctly. Set the DIP Switch as follow after shutting •...

  • Page 37: Night Quiet Mode

    36 k 40 k 48 k 54 k Step1(A) 8.5/11* Step2(A) 7.5/8.5* * : A4UQ28GFA0 only Saving Power Consumption with Mode Lock. Saving Power Saving Power Consumption (step 1) Consumption (step 1) + Mode Lock (Cooling) + Mode Lock (Heating)

  • Page 38: Pcb Display(18 / 26 K Model Only)

    FUNCTION PCB Display(18 / 26 k Model Only) It is useful to check the cycle data without LGMV. Operating Method Whenever you push the Tact Switch, the cycle information will be shown as below. h After 1 page is displayed, subsequently 2 page is displayed. TACT-SW1 Display Item...

  • Page 39: Installation Guide At The Seaside

    INSTALLATION GUIDE AT THE SEASIDE INSTALLATION GUIDE AT THE SEASIDE CAUTION In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the sea wind. • Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.

Table of Contents