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LG UU21WH Installation Manual
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LG UU21WH Installation Manual

LG UU21WH Installation Manual

Type: high cop inverter
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LG
Air Conditioner
INSTALLATION MANUAL
Type: High COP Inverter
website http://www.lgservice.com
IMPORTANT
• 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.
LG

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  • Page 1 website http://www.lgservice.com Air Conditioner INSTALLATION MANUAL Type: High COP Inverter IMPORTANT • 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.

  • Page 2: Table Of Contents

    Single A Air Conditioner Installation Manual CONTENTS Safety Precautions ....................3 Installation of indoor, Outdoor Unit ..............6 Indoor Unit installation ..................7 Indoor Unit Drain Piping ..................8 Connecting Pipes ....................10 Remote Controller Installation .................12 Outdoor Unit installation ..................14 Leakage test and Evacuation ................17 Installation to Decorative Panel ...............19 Test running .......................21 Optional Operation ....................23...

  • 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. I Be sure to read before installing the air conditioner. I Be sure to observe the cautions specified here as they include important items related to safety. I 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. I Operation Do not share the outlet with Do not use the damaged Do not modify or extend the other appliances.
  • Page 5 Safety Precautions I 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 Of Indoor, Outdoor Unit

    Installation of Indoor, Outdoor Unit Installation of Indoor, Outdoor Unit Installation Places 1. Indoor unit Cassette type • There should not be any heat source or steam near the unit. Ceiling • There should not be any obstacles to prevent Ceiling Board Ceiling Board the air circulation.

  • Page 7: Indoor Unit Installation

    The indoor unit installation The indoor unit installation 1. Cassette type 875 (Ceiling opening) 787 (Hanging bolt) Ceiling Level gauge 840 Unit size Ceiling board Unit:mm • Select and mark the position for fixing bolts and piping CAUTION : hole. •...

  • Page 8: Indoor Unit Drain Piping

    The indoor unit installation Ceiling Keep the length of the bolt Hanging bolt from the bracket to 40mm (W3/8 or M10) Flat washer for M10 Air Conditioner body (W3/8 or M10) (accessory) Ceiling board Ceiling board Spring washer (M10) Flat washer for M10 (accessory) Set screw of Paper model...
  • Page 9 Indoor Unit Drain Piping Drain test 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 Flexible drain hose it provisionally until the test comes to an end.

  • Page 10: 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 90° Cut the pipes and the cable. • Use the accessory piping kit or the pipes purchased locally.
  • Page 11 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 12: Remote Controller Installation

    Remote Controller Installation 1. Connect the remote controller cable to the wired remote controller installation board as shown in the right picture. 12V SIG GND Red wire Yellow Yellow wire Black Black wire Remote Controller Cable ❊ The remote controller cable is connected as factory default. 2.
  • Page 13 Remote Controller Installation 5. Use the connecting cable to connect the indoor unit and the remote controller. Check whether the connector is connected correctly. Indoor unit side Connecting cable 6. When the distance between the wired remote controller and the indoor unit is 10m and above, use the extension cable.

  • Page 14: Outdoor Unit Installation

    The outdoor unit installation The outdoor unit installation Connecting the cable to Outdoor Unit • Remove the side panel for wiring connection. • Use the cord clamp to fix the cord. • Earthing work - Case 1 :Terminal block of Outdoor Unit have mark.
  • Page 15 The outdoor unit installation • The installation piping is connectable in four directions.(refer to figure 1) <Figure 1> Backward Sideways Forward Downward • When connecting in a downward direction, knock out the knockout hole of the base pan. <Figure 2> (refer to figure 2) Knock-out Base pan...
  • Page 16 Seal a small opening around the pipings with The outdoor unit installation 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 unit with insulation material and opening around opening around secure it with two kinds of vinyl...

  • Page 17: 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 18 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 tubing Indoor unit length and capacity of the pump.

  • Page 19: Installation To Decorative Panel

    Installation to Decorative Panel Installation to Decorative Panel The decorative panel has its installation direction. Before installing the decorative panel, always remove the paper template. 1. Remove the packing and take out air inlet grille from front panel. Front grille 2.
  • Page 20 Installation to Decorative Panel 5. Fit the corner covers. 6. Open two screws of control panel cover. Screw 7. Connect one display connector and two vane control connectors of front panel to indoor unit PCB. The position marking on PCB is as: Display connector : CN-DISPLAY Vane control connector: CN-VANE 1,2 CN-VANE 1,2...

  • Page 21: 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. For test run, carry out the cooling operation firstly even during CAUTION heating season.
  • Page 22 Test running CAUTIO N: 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 pasted on the inside of control box cover.

  • Page 23: Optional Operation

    Optional Operation Optional Operation Installer Setting -Test Run Mode After installing the product, you must run a Test Run mode. For details related to this operation, refer to the product manual. Keep pressing button setting for 4 secs to enter installer setting mode until code displayed in timer segment.
  • Page 24 Optional Operation Installer Setting - Setting Address of Central Control Press the button for 4 seconds to enter the installer setting mode until timer segment display "01:01". Repeat pressing button to select Function code 02. Indoor No. Function Code Group No Ex) Setting Address as 'F5' Set Group No.
  • Page 25 Optional Operation Installer Setting -Thermistor Press button for 4 seconds to enter the installer setting mode until timer segment display “01:01”. Repeat pressing button to select Function code 04. Function Code Thermistor setting Ex) Setting Thermistor as '2TH'. Set Thermistor mode by pressing button.
  • Page 26 Optional Operation Installer Setting -Ceiling Height Selection This function is to adjust FAN Airflow rate according to ceilingheight (only cassette model) Press button for 4 seconds to enter the installer setting mode until timer segment display “01:01”. Repeat pressing button to select Function code 05.
  • Page 27 Optional Operation Installer Setting-Group Setting This function is only for group control operation. Please don’t set this function in case of non-group control. Press button for 4 seconds to enter the installer setting mode until timer segment display "01:01". Repeat pressing button to select Function code 07.
  • Page 28 Optional Operation Installer Setting-Dry Contact Mode Setting This function allows the Dry contact-indoor unit operate under Auto Run mode or Manual mode with remote controller. Press button for 4 seconds to enter the installer setting mode until timer segment display “01:01”. Repeat pressing button to select Function code 09.
  • Page 29 Optional Operation Installer Setting-Celsius / Fahrenheit Switching This function is used for switching the display between Celsius and Fahrenheit. (Optimized only for U.S.A) Press button for 4 seconds to enter the installer setting mode until timer segment display “01:01”. Repeat pressing button to select Function code 12.
  • Page 30 Optional Operation Installer Setting -Optional Function Setting For the optional product such as PLASMA PURIFICATION/dehumidifier/ electric heater and ventilation, elevation grill. It is possible to set the items are installed or not Press button for 4 seconds to enter the installer setting mode until timer segment display “01:01”.

  • Page 31: Installation Guide At The Seaside

    3) Select a well-drained place. 1. If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment. 2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water...

  • Page 32: Wiring Connection

    • Model of circuit breaker recommended by authorized personnel only Model Phase(Ø) ELCB UU21WH UU24WH Connecting Cables between Indoor Unit and Outdoor Unit • Open the control box cover and connect the Remote controller cord and Indoor power wires. Remote...

  • Page 33: Piping Length And The Elevation

    Elevation B(m) (Diameter:Ø) Model refrigerant (g/m) Liquid Standard Max. Standard Max. UU21WH 5/8"(15.88mm) 3/8"(9.52mm) UU24WH Indoor unit Oil trap A trap is not necessary when the outdoor unit is installed in a higher Gas piping position than the indoor unit.
  • Page 34 Memo 34 Air Conditioner...
  • Page 35 Printed in Korea P/No.: MFL40910609 Oct.2008 specifications, designs and other content presented in this manual are current as of September 2007 but subject to change without notice.

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Uu24wh

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