LG LMU245HV - User Manual

6 Multi Air Conditioner Safety Precautions To prevent the injury of the user or other people and property damage, the following instructionsmust be followed. ■ Be sure to read before installing the air conditioner. ■ Be sure to observe the cautions specified here as they include important items rela...

Installation Manual 7 ENGLISH Safety Precautions Do not install the product at a place that thereis concern of falling down. • Otherwise, it may result in personal injury. Use caution when unpacking and installing. • Sharp edges may cause injury. Take the power plug out ifnecessary, holding the head...

8 Multi Air Conditioner Safety Precautions CAUTION ■ Installation Install the drain hose to ensure that draincan be securely done. • Otherwise, it may cause water leakage. Install the product so that the noise or hotwind from the outdoor unit may not causeany damage to the neighbors. • Otherwise, it...

Installation Manual 9 ENGLISH Installation of Indoor, Outdoor Unit Read completely, then follow step by step. Indoor unit 1. Do not have any heat or steam near the unit.2. Select a place where there are no obstacles in front of the unit. 3. Make sure that condensation drainage can be conveniently ro...

10 Multi Air Conditioner Installation of Indoor, Outdoor Unit Outdoor unit 1. If an awning is built over the unit to prevent direct sunlight or rain exposure, make surethat heat radiation from the condenser is notrestricted. 2. Ensure the unit is unobstructed, allow proper space on all sides accordi...

Installation Manual 11 ENGLISH Seaside Applications and Installation Installation of Indoor, Outdoor Unit 1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced. 2. Do not install the product where it could be exposed to sea wind (salty...

12 Multi Air Conditioner Installation of Indoor, Outdoor Unit Multi Piping Type Piping length and elevation 18k 50(164) 25(82) 3(10) 15(49) 7.5(25) 24k 24k 75(246) 25(82) 3(10) 15(49) 7.5(25) 33k 36k 75(246) 25(82) 3(10) 15(49) 7.5(25) 48k Outdoor Unit Capacity (Btu/h class) Max total length of all ...

Installation Manual 13 ENGLISH Installation # Standard / Artcool Mirror Type 1. Prepare the indoor unit's piping and drain hose for installation through the wall. 2. Remove the plastic tubing retainer(see the illustration on the right) and pull the tubingand drain hose away from chassis. 3. Route th...

14 Multi Air Conditioner Installation # Standard Libero Type 1. Pull the screw cap at the bottom of the in- door unit 2. Remove the chassis cover from the unit by loosing screws 3. Pull back the tubing holder. 4. Remove pipe port cover and positioning the tubing Chassis cover Right Indoor unit back ...

Installation Manual 15 ENGLISH Installation Connecting the piping to the indoor unitand drain hose to drain pipe. 1. Align the center of the pipes and sufficiently tighten the flare nut by hand. 2. Tighten the flare nut with a wrench. 3. Next, extend the indoor unit's drain hose. Then attach the dra...

16 Multi Air Conditioner Installation Wrap the insulation material around theconnecting portion. 1. Overlap the connection pipe insulation and the indoor unit pipe heat insulation material. Bindthem together with vinyl tape so that there is nogap. 2. Wrap the area which accommodates the rear piping ...

Installation Manual 17 ENGLISH Installation The wall you select should be strong and solid enough to prevent vibration1. Mount the installation plate on the wall with type "A" screws. If mounting the unit on a concrete wall, use anchor bolts. • Mount the installation plate horizontally by al...

18 Multi Air Conditioner Installation 1. Connect the wires to the terminals on the control board individually according to theoutdoor unit connection. • Ensure that the color of the wires of outdoor unit and the terminal No. are the same asthose of indoor unit respectively. 2. Attach the Grille onto...

Installation Manual 19 ENGLISH Installation [Ceiling Concealed Duct Type] Ceiling dimension and hanging bolt location Installation of Unit Install the unit above the ceiling correctly. • Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. • Apply a filter Accessory at air...

20 Multi Air Conditioner Installation • Select and mark the position for fixing bolts. • Drill the hole for set anchor on the face of ceiling. • Insert the set anchor and washer onto the suspension bolts for locking thesuspension bolts on the ceiling. • Mount the suspension bolts to the set anchor f...

Installation Manual 21 ENGLISH Installation CAUTION Ceiling Drain Pump use Drainage hole Front of view 1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner.2. Minimum thickness of the insulation for the connecting pipe shall be 19mm(1/32 inch). •...

22 Multi Air Conditioner Installation Installation of wired Remote Controller CN-REMO LO2K J15 LO1K LO1D C07D C01K J14 CN-DISP CN-M CN-ZONEC IC01A The position of the fixing screws Side of remote Controller Side of Indoor Unit Main indoor unit Red Yellow Brown Main frame Fixing the remote controller...

Installation Manual 23 ENGLISH Installation Wired remote controller switch information Group control switch 1. For individual control/Master use2. For group control/Slave use Ceiling height selection switch 1. Low ceiling2. Standard ceiling3. High ceiling Product selection switch 1. Cooling Only pro...

24 Multi Air Conditioner Installation Trial Operation The trial operation is to check the installation status of the product. The temperature will not becontrolled during trial operation. Instead the product will operate in several modes such as cooling,strong wind, comp-on. Out door Room Temp Total...

Installation Manual 25 ENGLISH Installation Celsius/Fahrenheit Switching FAN SPEED MODE Out door Room Temp Total on Central Run Defrost Preheat Room Temp Total on Central Run Defrost Preheat Out door Out door Room Temp Total on Central Run Defrost Preheat %Setting as Celsius% %Setting as Fahrenheit%...

26 Multi Air Conditioner Installation Setting the Central-Control Address Note : The remote controller displays 'HL' if central controller has locked the remote controller . Out door Room Temp Total on Central Run Defrost Preheat P%RCUCS0C FAN SPEED MODE FAN SPEED MODE Group No. Indoor Unit No. TEMP...

Installation Manual 27 ENGLISH Installation ESP Function Out door Room Temp Total on Central Run Defrost Preheat P%RCUCS0C FAN SPEED MODE Lo Med 200 100 Setting the Low wind to 210 Setting the Medium wind to 100 TEMP TEMP 1 Press the mode button and the temperatureincreasing button( ▲ ) same time fo...

30 Multi Air Conditioner Installation Installation of 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. 2. Remove the Corner covers of th...

Installation Manual 31 ENGLISH Installation 5. Fit the corner covers. 6. Open two screws of control panel cover. 7. Connect one display connector and two vane control connectors of front panel toindoor unit PCB.The position marking on PCB is as:Display connector : CN-DISPLAYVane control connector: C...

32 Multi Air Conditioner Installation 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 Air Coo...

Installation Manual 33 ENGLISH Installation CAUTION : The suppliedflexible drain hose should notbe curved, neither screwed.The curved or screwed hosemay cause a leakage of water. [Ceiling Concealed Duct/Ceiling Cassette Type] • Drain piping must have down-slope (1/50 to 1/100): be sure not to provid...

34 Multi Air Conditioner Installation Attention 1. Possible drain-head height is up to 700mm(27 9/16 inch). So, it must be installed below 700mm(27 9/16 inch). 2. Keep the drain hose downward up to 1/50~1/100 inclination. Prevent any upward flow or reverse flow in any part. 3. 5mm(3/16 inch) or thic...

Installation Manual 35 ENGLISH Flaring Work and Connection of Piping Flaring work Main cause of gas leakage is defect in flaringwork. Carry out correct flaring work in thefollowing procedure. 1) Cut the pipes and the cable. ■ Use the accessory piping kit or the pipespurchased locally. ■ Measure the ...

36 Multi Air Conditioner Flaring Work and Connection of Piping Align the center of the piping and sufficientlytighten the flare nut by hand. Connecting pipe order 1) A~D-UNIT gas side pipe 2) A~D-UNIT liquid side pipe Finally, tighten the flare nut with torque wrenchuntil the wrench clicks. • When t...

Installation Manual 37 ENGLISH Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the indoor unit by connecting the wires to the terminals on the controlboard individually according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit an...

38 Multi Air Conditioner Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Outdoor unit. 1. Remove the control cover from the unit by loosening the screw.Connect the wires to the terminals on thecontrol board individually as the following. 2. Secure the cable onto th...

Installation Manual 39 ENGLISH Connecting the Cable between Indoor Unit and Outdoor Unit (1) Remove two-caps on the conduit panel. (for low voltage line) (2) Pull out connection cable through conduit.(3) After conduit to the panel, fix nut to the opposite side of panel. (4) Pass the connection cabel...

40 Multi Air Conditioner Checking the Drainage, Insulating the Pipe and Special Piping Applications Insulating the Pipe and Special Piping Applications Insulate the piping by wrapping theconnecting portion of the indoor unitwith insulation material and secure itwith two kinds of vinyl tape. • If you...

Installation Manual 41 ENGLISH Long Pipe Setting Long Pipe Setting 1 SW01N 2 3 4 1. Open the top cover of outdoor unit. 2. Select one of the two selectable modes as follows. 3. Set the Zone as shown in Fig. 4. Close the top cover and check whether the product works normally. WARNING: Do not open the...

42 Multi Air Conditioner Air Purging 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 an...

Installation Manual 43 ENGLISH Air Purging and Evacuation 1. Connect the charge hose end described in the preceding steps to the vacuum pump toevacuate the tubing and indoor unit.Confirm the "Lo" knob of the manifold valve isopen. Then, run the vacuum pump.The operation time for evacuation v...

44 Multi Air Conditioner Charging Charging ■ If installed total piping length is more than standard total length, additional refrigerant charging isnecessary.Below standard total piping length, additional refrigerant charging is not required. Important: If you are ever uncertain of the unit charge, ...

Installation Manual 45 ENGLISH Combination indoor units Combination indoor units : 1. The total capacity(in Btu/h unit) of connected indoor unit models represents the total sum of the figures expressed in the indoor model name. 2. Combinations in which the total capacity of the connected indoor unit...