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LG UU21WH Installation Manual

High efficiency inverter
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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.
This product contains Fluorinated Greenhouse Gases. (R410A)
TYPE : High Efficiency Inverter
Original instruction
P/NO : MFL67855402
www.lg.com

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  • 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. This product contains Fluorinated Greenhouse Gases. (R410A) TYPE : High Efficiency Inverter Original instruction www.lg.com P/NO : MFL67855402...

  • Page 2: Table Of Contents

    Single A Air Conditioner Installation Manual CONTENTS Safety Precautions ....................3 Installation Places ....................6 Piping length and the elevation .................6 The outdoor unit installation................7 Connecting Pipes ....................9 Leakage test and Evacuation ................12 Wiring Connection.....................14 Test running .......................15 Night Silent Operation Setting .................16 Self-diagnosis Function..................16 Installation Guide at the Seaside ..............17...

  • Page 3: Safety Precautions

    Safety Precautions Safety Precautions To prevent the injury of 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.
  • Page 4 Safety Precautions Do not install the product at a place that there Use caution when unpacking and installing. is concern of falling down. • Otherwise, it may result in personal injury. • Sharp edges may cause 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.
  • Page 5 Safety Precautions n Installation Install the drain hose to ensure that drain Install the product so that the noise or hot can be securely done. wind from the outdoor unit may not cause any damage to the neighbors. • Otherwise, it may cause water leakage. •...

  • Page 6: Installation Places

    Installation Places Installation Places You need to select adequate installation location considering the following conditions, and make sure to acquire the consent of the user. Outdoor unit • If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted.

  • Page 7: The Outdoor Unit Installation

    The outdoor unit installation The outdoor unit installation Connecting the cable to Outdoor Unit • Remove the side panel or cover control for wiring connection. • Use the cord clamp to fix the cord. • Earthing work - Case 1 :Terminal block of Outdoor Unit have mark.
  • Page 8 Piping length and the elevation • The installation piping is connectable in 3 directions.(refer to figure 1) <Figure 1> Backward Sideways Forward Preventing foreign objects from entering <Figure 2> (refer to figure 2) • Plug the pipe through-holes with putty or Liquid side piping (Smaller Dia.) insulation material(procured locally)to stop up all...

  • Page 9: Connecting Pipes

    Connecting Pipes Connecting Pipes Preparation of Piping Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the Copper Slanted Uneven Rough following procedure. tube Cut the pipes and the cable. • Use the accessory piping kit or the pipes purchased locally.
  • Page 10 Connecting Pipes Connecting the pipings to the indoor unit and drain hose to drain pipe • Align the center of the pipings and sufficiently tighten the flare nut by hand. • Tighten the flare nut with a wrench. Indoor unit tubing Flare nut Pipings Outside diameter...
  • Page 11 Seal a small opening around the pipings with Connecting Pipes gum type sealer. Forming the piping Plastic band Form the piping by wrapping the connecting portion of the indoor Seal a small Seal a small Seal a small unit with insulation material and opening around opening around opening around...

  • Page 12: Leakage Test And Evacuation

    Leakage test and Evacuation Leakage test 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 13 Leakage test and Evacuation Evacuation 1. Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit. Confirm the "Lo and Hi" knob of the manifold valve is open. Then, run the vacuum pump. The operation time for evacuation varies with Indoor unit tubing length and capacity of the pump.

  • Page 14: Wiring Connection

    Wiring Connection Wiring Connection Electrical Wiring Perform the electrical wiring work according to the electrical wiring connection. • All wiring must comply with local requirements. • Select a power source that is capable of supplying ELCB Main the current required by the air conditioner. power source Switch box •...

  • Page 15: Test Running

    Test running Test running 1. PRECAUTIONS IN TEST RUNNING • The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner should not be operated. CAUTION • To cancel the test run, press any button. CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE •...

  • Page 16: Night Silent Operation Setting

    Night Silent Operation Setting Night Silent Operation Setting 1. Open the panel of outdoor unit. 2. Set the DIP SW01N as below Fig. DIP SW01N DIP Switch2 Function Night Silent Operation -ON Night Silent Operation - OFF 3. Close the panel WARNING: Do not open the panel when operating the product.

  • Page 17: Installation Guide At The Seaside

    • Install at a place with fluent water draining to prevent damage from localized heavy rain and avoid frequent flooded area. 1. If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment.
  • Page 18 Installation Guide at the Seaside Model Designation Serial Number Chassis name Indoor / Outdoor Detailed product type W : Inverter outdoor WH : High COP Inverter outdoor H : High COP indoor units : Low static Nominal Capacity EX) 9,000 Btu/h Class ➝ '09' 24,000 Btu/h Class ➝...
  • Page 19 [Representative] LG Electronics Inc. EU Representative Krijgsman 1, 1186 DM Amstelveen, The Netherlands [Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA...

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