LG LMU240HV - Manuals

Installation Manual 5 Safety Instructions ENGLISH h The figure can be changed according to model. Safety Instructions Installation • Always perform grounding. - Otherwise, it may cause electrical shock. • Don’t use a power cord, a plug or a loose socket which is damaged. - Otherwise, it may cause a ...

6 Multi Air Conditioner Safety Instructions • Use caution when unpacking and installing. - 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. Otherwise, it may cause fire orexpl...

Installation Manual 7 Safety Instructions ENGLISH Installation • Install the drain hose to ensure that drain can be securely done. - Otherwise, it may cause water leakage. • Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to the neighbors.- Otherwise,...

8 Multi Air Conditioner 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 routed a...

Installation Manual 9 Installation of Indoor, Outdoor Unit ENGLISH 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 ac...

10 Multi Air Conditioner Installation of Indoor, Outdoor Unit Seaside Applications and Installation 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 wind)...

Installation Manual 11 Installation of Indoor, Outdoor Unit ENGLISH Seasonal Wind And Cautions In Winter - Sufficient measures are required in a snow area or severe cold area in winter so that product can be operated well. - Get ready for seasonal wind or snow in winter even in other areas. - Instal...

12 Multi Air Conditioner Installation of Indoor, Outdoor Unit Multi Piping Type Piping length and elevation h2 h1 A B Multiple Piping Type Unit : m(ft) 18 50(164) 25(82) 3(10) 15(49) 7.5(25) 24 24 70(230) 25(82) 3(10) 15(49) 7.5(25) 33 30 75(246) 25(82) 3(10) 15(49) 7.5(25) 40 36 75(246) 25(82) 3(10...

Installation Manual 13 Installation of Indoor, Outdoor Unit Distributor Piping Type h1 C Branch Pipe Main Pipe Distributor Distributor A B h2 Unit : m(ft) Outdoor Unit Capacity (kBtu/h class) Max total length of all pipes (Main + Branch pipes) Max length of Main pipe (A+B+C) Max length of Branch pip...

14 Multi Air Conditioner 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 the indo...

16 Multi Air Conditioner 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 drain pip...

Installation Manual 17 Installation ENGLISH 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 p...

18 Multi Air Conditioner 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 aligning...

Installation Manual 19 Installation ENGLISH 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 Grill...

20 Multi Air Conditioner Installation [Ceiling Cassette Type] Ceiling dimension and hanging bolt location Level gauge Ceiling Ceiling board Unit: mm(inch) 585~660(23 1/16~26) (Ceiling Opening) 517(20 3/8) 461(18 5/32) 517(20 3/8) 585~660(23 1/16~26) (Ceiling Opening) 523(20 19/32) 570(22 15/32) Unit...

Installation Manual 21 Installation ENGLISH Set screw ofpaper model (4 pieces) Paper modelfor installation Ceiling board 150 mm (5-7/8 inch) Ceiling board Ceiling Flat washer for M10 (accessory) Keep the length of the bolt from the bracket to 40 mm(1-9/16 inch) Open the ceiling boardalong the outer ...

22 Multi Air Conditioner Installation Installation of Wired Remote Controller(Optional) 1 2 3 2 3 <Wire guide grooves> 1. Please fix tightly using provided screw after placing remote controller setup board on the place where you like to setup. - Please set it up not to bend because poor setup ...

Installation Manual 23 Installation ENGLISH Wall Side Wall Side Wall Side Wall Side <Connecting order> <Separating order> 3. Please fix remote controller upper part into the setup board attached to the surface of the wall,as the picture on the right, and then, connectwith setup board by ...

24 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 25 Installation ENGLISH 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...

26 Multi Air Conditioner Installation CAUTION Install certainly the decorative panel. Cool air leakage causes sweating. ⇨ Water drops fall. ! Air conditionerunit Ceiling board Decorative panel Decorative panel Fit the insulator (this part) and be careful for cool air leakage Good example Air Cool a...

Installation Manual 27 Installation ENGLISH CAUTION The supplied flexible drain hoseshould not be curved, neitherscrewed. The curved or screwedhose may 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 provi...

28 Multi Air Conditioner Installation Attention 1. Possible drain-head height is up to 700 mm (27 9/16 inch). So, it must be installed below 700 mm(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. 5 mm(3/16 inch) or ...

Installation Manual 29 Flaring Work and Connection of Piping ENGLISH Main cause of gas leakage is defect in flaringwork. Carry out correct flaring work in thefollowing procedure. 1) Cut the pipes and the cable. n Use the accessory piping kit or the pipespurchased locally. n Measure the distance betw...

30 Multi Air Conditioner Flaring Work and Connection of Piping Align the center of the piping and sufficiently tighten the flare nut by hand. Connecting pipe order 1) ROOM A~C gas side pipe 2) ROOM A~C liquid side pipe Finally, tighten the flare nut with torque wrenchuntil the wrench clicks. • When ...

32 Multi Air Conditioner Flaring Work and Connection of Piping Viewed from point Ain direction of arrow Horizontalplane Gas Pipe Model PMBL5620 Ø 19.05 Ø 19.05 Liquid Pipe Within +/- 10° A Ø 9.52 Ø 9.52 Ø 9.52 Ø 19.05 Y branch A B To Outdoor Unit [unit: mm] To BD Unit A B Facing upwards Facing downw...

34 Multi Air Conditioner Flaring Work and Connection of Piping : • This unit has two different installation types: (1) Ceiling-suspended type and (2) wall-mounted type. • Choose the proper installation pattern according to the location of installation. • The installation location for printed wiring ...

Installation Manual 35 Connecting the Cable between Indoor Unit, Distributor Unit and Outdoor Unit ENGLISH 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 t...

36 Multi Air Conditioner Connecting the Cable between Indoor Unit, Distributor Unit and Outdoor Unit • Connect refrigerant pipes and connection wires to the appropriate ports maked with matching alphabets (A, B and C) on this unit. • Follow the instructions on the wiring nameplate to connect the con...

Installation Manual 37 Connecting the Cable between Indoor Unit, Distributor Unit and Outdoor Unit ENGLISH (1) Remove the control cover. Loosen the two screws, and slide the cover in the directionof the arrow. (2) Pull out connection cable through conduit. After conduit to the panel, fix nut to theo...

38 Multi Air Conditioner Connecting the Cable between Indoor Unit, Distributor 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 the controlboard individually as the following. 2. Secure ...

40 Multi Air Conditioner Connecting the Cable between Indoor Unit, Distributor Unit and Outdoor Unit (1) Remove the side panel and knockouts of 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. (...

Installation Manual 41 Checking the Drainage, Insulating the Pipe and Special Piping Applications ENGLISH Insulate the piping by wrapping the connectingportion of the indoor unit with insulation materialand secure it with two kinds of vinyl tape. • If you want to connect an additional drain hose, th...

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. Water may lead to corros...

Installation Manual 43 Air Purging and Evacuation ENGLISH 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 Important: If you are ever uncertain of the unit charge, reclaim, evacuate and weigh in the correct charge usingthe charge amount specified on the Unit`s specification label. Multiple Piping Models Additional charge(oz ) = (Total Installation Piping Length-Standard ...

Installation Manual 45 Charging ENGLISH h If the total additional charge value after calculation comes out to be negative, then do not consideradditional charge. A Ex) A8UW54GFA0, A8UW60GFA0 A B C a b c 18k 9k 9k d e 9k 18k Distributor type Models Additional charge (oz) = (( Total Main piping Length...

46 Multi Air Conditioner Installation PI485 Fix the PI485 PCB as shown in Fig. Detailed installation method refer to PI485 Installation Manual. 18 kBtu/h, 24 kBtu/h 30 kBtu/h, 36 kBtu/h 48 kBtu/h, 54 kBtu/h This label is should be applied in the location where This label is should be applied in the ...

Installation Manual 47 Test Running ENGLISH Prepare remote control Remove the battery cover by pulling it accordingto the arrow direction.Insert new batteries makingsure that the (+) and (–) of battery are installedcorrectly. Reattach the cover by pushing it backvinto position. Evaluation of the per...

48 Multi Air Conditioner Function If you set the DIP Switch when power is on, the change in setting is not applicable. The changingsetting is enabled only when Power is reset. DIP Switch Function 1 2 3 4 5 5 Normal Operation (No Function) 5 Forced Cooling Operation 5 Wiring Error Check 5 Saving Powe...

Installation Manual 49 Function ENGLISH Adding the refrigerant in winter. Setting Procedure 1. Set the DIP Switch as follow after shutting the power source down. 2. Reset the power. 3. Check that the Red LED of PCB is on during work. (The indoor unit is operated by force.) 4 Add the specific amount ...

50 Multi Air Conditioner Function Saving Power Consumption operation is the function whichenables efficient operation by lowering the maximum powerconsumption value. Setting Procedure 1 Set the DIP Switch as follow after shutting the power source down. 2 Reset the power. 1sec 1sec 1sec LED1 (Red) LE...

Installation Manual 51 Function ENGLISH Saving Power Consumption Current level. Night Quiet Mode operation lowers the noise level of the outdoor unit by changing the compfrequency and fan speed. This function is operated all night long. Setting Procedure 1. Set the DIP Switch as follow after shuttin...

52 Multi Air Conditioner Function Setting Procedure 1. Set the DIP Switch as follow after shutting the power source down. 2. Reset the power. Mode Lock with Night Quiet Mode Saving Power Consumption with Mode Lock. Mode Lock (Cooling) + Night Quiet Mode(step 1) Mode Lock (Cooling) + Night Quiet Mode...

Installation Manual 53 Function ENGLISH It is useful to check the cycle data without LGMV. Operating Method Whenever you push the Tact Switch, the cycle information will be shown as below. h After 1 page is displayed, subsequently 2 page is displayed. Tact S/W Item Display 18/24/60 k Example 1 page ...

54 Multi Air Conditioner Max Combination Capacity Max Combination Capacity Multi Piping Type Capacity (kBtu/h) Max Room No. Combination Indoor Capacity (kBtu/h) Max Combination Capacity (kBtu/h) 18 2 7,9,12,15 24 24 3 7,9,12,15,18,24 33 30 4 7,9,12,15,18,24 40 36 4 7,9,12,15,18,24 48 Distributor Typ...