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Optional Operation

Installation Manual

29

ENGLISH

Installer Setting-Celsius / Fahrenheit Switching

This function is used for switching the display between Celsius and Fahrenheit.
(Optimized only for U.S.A)

Function Code

conversion mode value

Press button for 4 seconds
to enter the installer setting
mode until timer segment
display “01:01”.

1

Press button to exit or
system will automatically exit
after 25 seconds without any
input.

5

Repeat pressing button to select
Function code 12.

Ex) Fahrengeit Setting

2

Select Temperature unit mode by
pressing button.

(01: Celsius, 02: Fahrenheit)

3

Press button to save or release.

4

❊

Whenever press

button in Fahrenheit mode, the temperature will increase/drop 2 degrees.

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Summary of Contents for UU21WH

Page 1: ...e 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 ...

Page 2: ...ndoor 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 Installation Guide at the Seaside 31 Wiring Connection 32 Piping length and the elevation 33 ...

Page 3: ...d a plug or a loose socket which is damaged Otherwise it may cause a fire or electrical shock For installation of the product always contact the service center or a professional installation agency Otherwise it may cause a fire electrical shock explosion or injury Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit If the electrical part cover of ...

Page 4: ...ay cause injury Do not share the outlet with other appliances It will cause an electric shock or a fire due to heat generation Do not use the damaged power cord Otherwise it may cause a fire or electrical shock Do not modify or extend the power cord randomly Otherwise it may cause a fire or electrical shock Take care so that the power cord may not be pulled during operation Otherwise it may cause ...

Page 5: ...ct Keep level parallel in installing the product Otherwise it may cause vibration or water leakage Avoid excessive cooling and perform ventilation sometimes Otherwise it may do harm to your health Use a soft cloth to clean Do not use wax thinner or a strong detergent The appearance of the air conditioner may deteriorate change color or develop surface flaws Do not use an appliance for special purp...

Page 6: ...nroof Fence or obstacles OUTDOOR Unit OUTDOOR Unit More than 300 Unit mm Installation of Indoor Outdoor Unit 1 Indoor unit Cassette type There should not be any heat source or steam near the unit There should not be any obstacles to prevent the air circulation A place where air circulation in the room will be good A place where drainage can be easily obtained A place where noise prevention is take...

Page 7: ...g room to install the air conditioner in such a place where it may not suck oily steam 2 Avoid installng air conditioner in such places where cooking oil or iron powder is generated 3 Avoid places where inflammable gas is generated 4 Avoid place where noxious gas is generated 5 Avoid places near high frequency generators NOTICE CAUTION This air conditioner uses a drain pump Install the unit horizo...

Page 8: ...ole on the wall slightly tilted to the outdoor side using a Ø 70 hole core drill Drain piping must have down slope 1 50 to 1 100 be sure not to provide up and down slope to prevent reversal flow During drain piping connection be careful not to exert extra force on the drain port on the indoor unit The outside diameter of the drain connection on the indoor unit is 32mm Be sure to execute heat insul...

Page 9: ...ickness 10 to 20mm Stick glass wool on all air conditioners that are located in ceiling atmosphere Indoor unit Thermal insulator accessory Fastening band accessory Refrigerant piping 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 it provisionally until the test comes to an end F...

Page 10: ...distance Cut the cable 1 5m longer than the pipe length Burrs removal Completely remove all burrs from the cut cross section of pipe tube Put the end of the copper tube pipe to downward direction as you remove burrs in order to avoid to let burrs drop in the tubing Putting nut on Remove flare nuts attached to indoor and outdoor units than put them on pipe tube having completed burr removal Not pos...

Page 11: ...tside diameter Torque Continuous Torque wrench 250mm Torque wrench 250mm Align the center of the pipings and sufficiently tighten the flare nut by hand Tighten the flare nut with a wrench When extending the drain hose at the indoor unit install the drain pipe Indoor unit tubing Flare nut Pipings Torque wrench Indoor unit tubing Spanner fixed Connection pipe Flare nut mm inch kg m Ø6 35 1 4 1 8 2 5...

Page 12: ... the guide slot remove any clogged part of the case in the direction to install before the installation 3 After locating the wired remote controller installation board at the desired location screw the unit firmly When there is a buried box install the wired remote controller board to fit the buried box Use the screws provided 4 After fixing the top part of the remote controller to the installatio...

Page 13: ...can cause damage in the temperature sensor Do not install the cable to be 50m or above It can cause communication error When installing the extension cable check the connecting direction of the connector of the remote controller side and the product side for correct installation If you install the extension cable in the opposite direction the connector will not be connected Specification of extens...

Page 14: ...Connect the cable of diameter 1 6mm2 or more to the earthing terminal provided in the control box and do earthing Case 2 Terminal block of Outdoor Unit don t have mark Connect the cable of diameter 1 6mm2 or more to the panel of control box marked as and fasten with earth screw Please check Connecting the cable to Outdoor Unit CAUTION The circuit diagram is not subject to change without notice Be ...

Page 15: ...tering refer to figure 3 Plug the pipe through holes with putty or insulation material procured locally to stop up all gaps as shown in the figure 3 Insects or small animals entering the outdoor unit may cause a short circuit in the electrical box Knock out Base pan Forward Sideways Backward Downward Gas side piping Bigger Dia Liquid side piping Smaller Dia Drain hose Connecting wire Connection pi...

Page 16: ...rm the following 1 Tape the piping and connecting cable from down to up 2 Secure the taped piping along the exterior wall Form a trap to prevent water entering the room 3 Fix the piping onto the wall by saddle or equivalent Trap Plastic band Seal a small opening around the pipings with gum type sealer Trap Trap Seal a small opening around the pipings with gum type sealer Seal a small opening aroun...

Page 17: ...y nitrogen gas cylinder to this service port with charge hoses CAUTION Be sure to use a manifold valve for leakage test If it is not available use a stop valve for this purpose The Hi knob of the manifold valve must always be kept close Pressurize the system to no more than 3 0 Mpa with dry nitrogen gas and close the cylinder valve when the gauge reading reached 3 0 Mpa Next test for leaks with li...

Page 18: ...lve stem of gas side valve counter clockwise to fully open the valve 3 Loosen the charge hose connected to the gas side service port slightly to release the pressure then remove the hose 4 Replace the flare nut and its bonnet on the gas side service port and fasten the flare nut securely with an adjustable wrench This process is very important to prevent leakage from the system 5 Replace the valve...

Page 19: ...from front panel 2 Remove the Corner covers of the panel 3 Fit the panel on the unit by inserting hooks as shown in picture 4 Insert two screws on diagonal corners of panel Do not tighten the bolts completely The fixing screws are included in the indoor unit box Check the alignment of panel with the ceiling Height can be adjusted using hanging bolts as shown in picture Insert the other two screws ...

Page 20: ...LAY Vane control connector CN VANE 1 2 8 Close the cover for control box 9 Install the air inlet grille and Filter on the panel Screw CN VANE 1 2 CN DISPLAY CAUTION Install certainly the decorative panel Cool air leakage causes sweating Water drops fall Air conditioner unit Ceiling board Decorative panel Decorative panel Fit the insulator this part and be careful for cool air leakage Good example ...

Page 21: ...temperature blow out temperature wind velocity wind volume voltage current presence of abnormal vibration and noise operating pressure piping temperature compressive pressure As to the structure and appearance check following items 2 Connection of power supply 1 Connect the power supply cord to the independent power supply Circuit breaker is required 2 Operate the unit for fifteen minutes or more ...

Page 22: ... maintained at more than 90 percent of the rated voltage marked on the name plate 7 Confirm that the cable thickness is as specified in the power sources specification Particularly note the relation between cable length and thickness 8 Never fail to equip a leakage breaker where it is wet or moist 9 The following troubles would be caused by voltage drop down Vibration of a magnetic switch damage o...

Page 23: ...Test Run mode For details related to this operation refer to the product manual 18 C cooling High Fan Speed Airflow direction mode will be operated during 18 minutes with ignoring room temperature After running 18 minutes under test run mode system will automatically turn OFF In case of duct type the Airflow UP DOWN function is not displayed During test run mode receiving signal from wireless remo...

Page 24: ...et Group No by pressing button 3 Move to Indoor No setting option by pressing button 4 Set Indoor No by pressing button 5 Press button to save or release 6 Press button to exit or system will automatically exit after 25 seconds without any input 7 Repeat pressing button to select Function code 02 Ex Setting Address as F5 2 Installer Setting Setting Address of Central Control ...

Page 25: ...or system will automatically exit after 25 seconds without any input 5 Repeat pressing button to select Function code 04 Ex Setting Thermistor as 2TH 2 Therefore system will use value that sensed from indoor unit or remote controller Temperature sensor location Function 01 Indoor unit Operation in indoor unit temperature sensor 02 Remote controller Operation in remote controller Temperature sensor...

Page 26: ...03 High 04 Super high 3 Press button to save or release 4 Press button to exit or system will automatically exit after 25 seconds without any input 5 Ceiling height setting is available only for some products Ceiling height of Super high function may not exist depending on the indoor unit Refer to the product manual for more details Ceiling Height Level Description 01 Low Decrease the indoor airfl...

Page 27: ... to enter the installer setting mode until timer segment display 01 01 1 Press button to exit or system will automatically exit after 25 seconds without any input 5 Repeat pressing button to select Function code 07 Ex Master Setting 2 Select Master Slave by pressing button 00 Slave 01 Master 3 Press button to save or release 4 CAUTION The maximum length of connecting wire should be below 200m 25Ω ...

Page 28: ...ng value Press button for 4 seconds to enter the installer setting mode until timer segment display 01 01 1 Press button to exit or system will automatically exit after 25 seconds without any input 5 Repeat pressing button to select Function code 09 Ex Setting Dry Contact Mode ON 2 Select Dry contact setting by pressing button 00 OFF 01 ON 3 Press button to save or release 4 Please refer to dry co...

Page 29: ...on for 4 seconds to enter the installer setting mode until timer segment display 01 01 1 Press button to exit or system will automatically exit after 25 seconds without any input 5 Repeat pressing button to select Function code 12 Ex Fahrengeit Setting 2 Select Temperature unit mode by pressing button 01 Celsius 02 Fahrenheit 3 Press button to save or release 4 Whenever press button in Fahrenheit ...

Page 30: ...g condition Press button for 4 seconds to enter the installer setting mode until timer segment display 01 01 1 Select existing condition of each mode by pressing button 00 not installed 01 installed 3 Press button to save or release 4 Press button to exit or system will automatically exit after 25 seconds without any input 5 Repeat pressing button to select function code 20 PLASMA PURIFICATION 21 ...

Page 31: ...ide 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 Selecting the location Outdoor Unit 1 If the outdoor unit is to be installed close to the seaside direct exposure to the sea wind should be avoided Install the outdoor unit on t...

Page 32: ...LCB UU21WH 1 20A UU24WH Open the control box cover and connect the Remote controller cord and Indoor power wires Indoor power cord Remote controller cord The power cord connected to the outdoor unit should be complied with the following specifications Rubber insulation type H05RN F approved by HAR or SAA If the supply cord is damaged it must be replaced by a special cord or assembly available from...

Page 33: ...H Model Additional refrigerant g m Pipe Size Diameter Ø Length A m Elevation B m Gas Liquid Standard Max Standard Max Precautions when laying power wiring Use round pressure terminals for connections to the power terminal block 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 abnorma...

Page 34: ...34 Air Conditioner Memo ...

Page 35: ...P No MFL40910609 specifications designs and other content presented in this manual are current as of September 2007 but subject to change without notice Printed in Korea Oct 2008 ...

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