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Installation Manual 

5

Safety Precautions      

n

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.

Keep level even when installing
the product. 

• To avoid vibration.

Do not install the product where
the noise or hot air from the
outdoor unit could be offensive
to the neighborhoods or damage
property.

• It may cause a problem for

your neighbors.

Use two or more people to lift
and transport the product. 

• Avoid personal injury.

Do not install the product
where it will be exposed to
sea wind (salt spray) directly.

• It may cause corrosion on the

product. Corrosion, particularly
on the condenser and evaporator
fins, could cause product
malfunction or inefficient
operation.

n

Operation

Do not expose the skin directly to cool air for
long periods of time. 
(Don't sit in the draft.)

• This could harm to your health.

Do not use the product for special purposes,
such as preserving foods, works of art, etc. It
is a consumer air conditioner, not a precision
refrigeration system.

• There is risk of damage or loss of property.

Do not block the inlet or outlet of
air flow.

• It may cause product failure.

Use a soft cloth to clean. Do not
use harsh detergents, solvents,
etc.

• There is risk of fire, electric shock, or

damage to the plastic parts of the
product.

Do not touch the metal parts of the
product when removing the air filter.
They are very sharp!

• There is risk of personal injury.

Do not step on or put anyting on
the product. (outdoor units)

• There is risk of personal injury and

failure of product.

Always insert the filter securely.
Clean the filter every two weeks or
more often if necessary.

• A dirty filter reduces the efficiency of the

air conditioner and could cause product
malfunction or damage.

Do not insert hands or other
objects through the air inlet or
outlet while the product is
operated.

• There are sharp and moving parts that

could cause personal injury.

Do not drink the water drained
from the product.

• It is not sanitary and could cause

serious health issues.

Use a firm stool or ladder when
cleaning or maintaining the
product.

• Be careful and avoid personal injury.

Replace the all batteries in the remote
control with new ones of the same
type. Do not mix old and new batteries
or different types of batteries.

• Could adversley effect operation.

Do not recharge or disassemble the batteries. Do not
dispose of batteries in a fire.

• They may burn or explode.

If the liquid from the batteries gets onto your skin or clothes,
wash it well with clean water. Do not use the remote if the
batteries have leaked.

• The chemicals in batteries could cause burns or other health

hazards.

Summary of Contents for LT-C182QLE1

Page 1: ... 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 Ceiling Cassette www lg com ...

Page 2: ...5 Installer Setting PQRCUSA0 27 Installation guide at the seaside 37 o Connecting cable o Pipes Gas side Liquid side o Hanging Bolt W 3 8 or M10 length 650mm o Insulated drain hose o Additional Drain hose Inner Dia 32mm o Horizontal meter o Screw driver o Electric drill o Hole core drill ø70mm o Flaring Tools set o Torque Wrenches o Hexagonal Wrench 4mm 5mm o Gas leak detector o Ownerʼs Manual o I...

Page 3: ...ed electrician or an Authorized Service Center Do not disassemble or repair the product There is risk of fire or electric shock Always ground the product There is risk of fire or electric shock Install the panel and the cover of control box securely There is risk of fire or electric shock Always install a dedicated circuit and breaker Improper wiring or installation may cause fire or electric shoc...

Page 4: ...ge Turn the main power off when cleaning or maintaining the product There is risk of electric shock Do not store or use flammable gas or combustibles near the product There is risk of fire or failure of product If strange sounds or small or smoke comes from product Turn the breaker off or disconnect the power supply cable There is risk of electric shock or fire When the product is soaked flooded o...

Page 5: ... Use a soft cloth to clean Do not use harsh detergents solvents etc There is risk of fire electric shock or damage to the plastic parts of the product Do not touch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury Do not step on or put anyting on the product outdoor units There is risk of personal injury and failure of product Always i...

Page 6: ...lerts you to the risk of electric shock This symbol alerts you to hazards that may cause harm to the air conditioner This symbol indicates special notes NOTICE Introduction Symbols used in this Manual Features Anti bacteria Air Outlet Air Inlet Remote Controller ...

Page 7: ...stallation Installation Tools Figure Figure Name Screw driver Electric drill Measuring tape Knife Hole core drill Spanner Torque wrench Ohmmeter Hexagonal wrench Ammeter Gas leak detector Thermometer Horizontal meter Flaring tool set Name ...

Page 8: ... or rain exposure be careful that heat radiation from the condenser is not restricted There should not be any animals or plants which could be affected by hot air discharged Ensure the spaces indicated by arrows from the wall ceiling fence or other obstacles More than 300mm Fence or obstacles More than 700mm More than 600mm More than More than 300mmm 300mmm More than 300mm Sunroof Unit mm Ceiling ...

Page 9: ...Pipe Size mm inch Length A m Elevation B m Gas Liquid Standard Max Standard Max LT H182QLE1 12 70 1 2 6 35 1 4 7 5 30 5 20 30 LT H242PLE1 15 88 5 8 6 35 1 4 7 5 30 5 20 35 LT H302NLE1 15 88 5 8 6 35 1 4 5 0 50 5 30 25 LT H362NLE1 15 88 5 8 6 35 1 4 5 0 50 5 30 40 LT H482MLE1 19 05 3 4 9 52 3 8 7 5 50 5 30 45 LT H602MLE1 19 05 3 4 9 52 3 8 5 0 50 5 30 50 LT C182QLE1 12 70 1 2 6 35 1 4 7 5 30 5 20 3...

Page 10: ...e that the ventilation fan for smoke collecting hood on a cooking table has sufficient capacity so that it draws oily steam which should not flow into the suction of the air conditioner Make enough distance from a cooking room to install the air conditioner in such a place where it may not suck in oily steam 2 Avoid installing air conditioner in such circumstances where cutting oil mist or iron po...

Page 11: ...0 1 100 CAUTION Tighten the nut and bolt to prevent unit falling Remote Controller Installation Although the room temperature sensor is in the indoor unit the remote controller should be installed in such places away from direct sunlight and high humidity Installation of the remote controller Select places that are not splashed with water Select control position after receiving customer approval T...

Page 12: ... product so as not to make a gap with the wall side and to prevent shaking after the installation 2 Can set up Wired remote controller cable into three directions Setup direction the surface of wall reclamation upper right If setting up remote controller cable into upper and right side please set up after removing remote controller cable guide groove h Remove guide groove with long nose Reclamatio...

Page 13: ...rating 4 Please connect indoor unit and remote controller using connection cable 5 Please use extension cable if the distance between wired remote controller and indoor unit is more than 10m Please check if connector is normally connected Connecting cable Indoor Unit side When installing the wired remote controller do not bury it in the wall It can cause damage in the temperature sensor Do not ins...

Page 14: ... damaged it must be replaced by a special cord or assembly available from the manufacturer or its service agent 20mm GN YL NORMAL CROSS SECTIONAL Heat Pump Model 5 lines Cooling Model 4 lines Wiring Connection Open the control box cover and connect the Remote controller cord and Indoor power wires Remote Controller Cable Connecting Cable Terminal Block of Outdoor Unit 1 L 2 N 1 L 2 N 3 4 1 L 2 N 3...

Page 15: ...make proper tighterning impossible Over tightening the terminal screws may break them 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 u Precautions when laying power wiring Round pressur...

Page 16: ... REGULATION Main power source Switch box Refrigerant pipe Circuit Breaker Use circuit breaker or time delay fuse ELECTRICAL WIRING CONNECTING THE CABLE TO OUTDOOR UNIT 1 Remove the Cover control from the unit by loosening a screw Connect the wires to the terminals on the control board individually as following 2 Secure the cable onto the control board with the holder clamper 3 Refix the cover cont...

Page 17: ...ot possible to put them on after flaring work 4 Flaring work Carry out flaring work using flaring tool as shown below Firmly hold copper tube in a bar or die as indicated dimension in the table above 5 Check n Compare the flared work with figure below n If flare is noted to be defective cut off the flared section and do flaring work again If the piping and the drain hose are in common direction bu...

Page 18: ... in indoor and outdoor connection After completing the piping connection execute vacuum drying for the connecting piping and the indoor unit The vacuum drying must be carried out using the service ports of both the liquid and gas side valves CAUTION Use two wrenches and tighten with regular torque Outdoor unit Liquid side Flare connection Flare connection Gas side Indoor unit Spanner Torque wrench...

Page 19: ...el 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 and tighten al...

Page 20: ...as Display connector CN DISPLAY Vane control connector CN VANE 1 2 8 Close the cover for control box 9 Fit the link on the panel as shown in picture The link is included in the front panel unit box TM TN TP 10 Attach the other side of link on the filter guide of inlet grille Install the air inlet grille and filter on the panel TM TN TP 11 Install the air inlet grille and Filter on the panel Screw ...

Page 21: ...y cause a leakage of water 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 Feed water to the flexible drain hose and check the piping for leakage Be sure to check the drain pump for normal operating and noise when electrical wiring ...

Page 22: ...nt piping gas piping thick piping and drain piping add further 10mm to 30mm thickness material Indoor unit Thermal insulator accessory Fastening band accessory Refrigerant piping HEAT INSULATION 1 Wrap the connecting portion of indoor unit with the Insulation material and secure it with two Plastic Bands for the right pipings If you want to connect an additional drain hose the end of the drain out...

Page 23: ...evacuating the system take a leak test for the piping and tubing between the indoor and outdoor unit Air purging with vacuum pump 1 Check that both liquid and gas pipe between indoor and outdoor have been properly connected 2 Remove the service valve cap from both the gas and liquid side on the outdoor unit 3 Confirm that both the liquid and gas side valve are set to the closed position 4 Connect ...

Page 24: ...or unit connections by a soft brush to check for leakage of the connecting points of the piping 5 If bubbles come out the pipes have leakage Gas side Liquid side Cap Hexagonal wrench 2 way valve Open 3 way valve Close Evacuation 1 If the system is found free from all leakages relive the nitrogen pressure by loosening the charge hose connector at nitrogen cylinder Disconnect the hose from cylinder ...

Page 25: ...emperature 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 o Is the circulation of air adequate o Is the draining smooth o Is the heat insulation complete refrigerant and drain piping o Is there any leakage of refrigerant o Is the remote controller ...

Page 26: ... fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation Check them and make sure that they are all tightly fastened If they are loose it could give rise to burn out of the wires 4 Specification of power source 5 Confirm that electrical capacity is sufficient 6 Be sure that the starting volta...

Page 27: ... be responsible for the results In this case free service cannot be provided Function Code Value If pressing button long for 3 seconds it enters into remote controller setter setup mode If pressing once shortly it enters into user setup mode Please press more than 3 seconds for sure 1 When you enter the setting mode initially Function code is displayed on the bottom of the LCD screen 2 Some catego...

Page 28: ...Med 02 Low 5 Ceiling Height 05 03 High 04 Very High 01 V H 02 F H 6 Static Pressure 06 03 V L 04 F L 7 Master Setting 07 00 Slave 01 Master 8 Override Setting 08 00 Slave 01 Master 9 Dry Contact 09 00 Auto Off 01 Auto On 10 Release 3 Min 10 01 Set Delay 11 Zone State 11 01 Variable 02 Fixed 12 Celsius 12 00 Celsius Optimized only for U S A Fahrenheit Switching 01 Fahrenheit 13 Zone Type 13 00 Zone...

Page 29: ... 02 High 03 Super High 5 Product Direction 05 01 Normal 02 Opposite 6 Quick Refresh Priority 06 01 Supply Air First 02 Exhaust Air First 7 Master Setting 07 00 Slave 01 Master 8 Override Setting 08 00 Slave 01 Master 9 Dry Contact 09 00 Auto Off 01 Auto On 10 Release Of 3 Minute Delay 10 01 Set 11 Zone State 11 01 Variable 02 Fixed 12 Humidification for Singular 13 00 Not in Use Ventilation 01 Use...

Page 30: ...button long for 3 seconds it enters into remote controller setter setup mode If pressing once shortly it enters into user setup mode Please press more than 3 seconds for sure Please cancel the right and left of wind direction for RAC product 1 Setup figure 01 blinks at the lower part of indication window 2 After installing the product you must run a Test Run mode For details related to this operat...

Page 31: ...sing button will exit settings mode After setup it automatically gets out of setup mode if there is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected 7 If entering into address setup mode by using button it indicates as picture below 2 If pressing button long for 3 seconds it enters into remote controller setter setup mode If pressing on...

Page 32: ...f there is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected j The function of 2TH has different operation characteristics according to the product Temperature sensor selection Function 01 Remote controller Operation in remote controller temperature sensor 02 Indoor unit Operation in indoor unit temperature sensor 03 2TH Cooling Operatio...

Page 33: ...re is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected This function is to adjust FAN Airflow rate according to ceiling height For ceiling type product Ceiling height setting is available only for some products Ceiling height of ʻVery highʼ function may not exist depending on the indoor unit Refer to the product manual for more details ...

Page 34: ...e if there is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected 5 It is a function for settings in group control or 2 remote controller control Remote controller Function Master Indoor unit operates based on master remote controller at group control Master is set when delivering from the warehouse Slave Setup all remote controllers excep...

Page 35: ...ontact mode setup menu as picture below 2 Pressing button will exit settings mode After setup it automatically gets out of setup mode if there is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected 5 Dry contact function is the function that is possible to use only when dry contact equipment is separately purchased setup Please refer to dr...

Page 36: ...ically gets out of setup mode if there is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected 5 Function Plasma purification Electric heater Dehumidifier Elevation grill Ventilation kit Code 20 21 22 23 24 Setting feature for indoor unit when Air cleaning Heater Dehumidifier Up down grill Ventilation KIT is newly installed or installed uni...

Page 37: ...tment on the heat exchanger 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 the opposite side of the sea wind direction 2 In case to install the outdoor unit on ...

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