LG MT11AH Installation Manual Download Page 13 | Manualshive

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ENGLISH

Installation Manual

13

Installation of Indoor

ELECTRICAL WIRING

1. All wiring must comply with LOCAL REGULATIONS.
2. Select a power source that is capable of supplying the current required by the air conditioner.
3. Feed the power source to the unit via a distribution switch board designed for this purpose.
4. The terminal screws inside the control box may be loose due to vibration during transport.

Check the screws for loose connection.
(Running the air conditioner with loose connection can overload and damage electrical
components.)

5. Always ground the air conditioner with a grounding wire and connector to meet the LOCAL

REGULATION.

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Summary of Contents for MT11AH

Page 1: ...nstalling 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 P NO MFL42291407 ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH ...

Page 2: ...on 12 ELECTRICAL WIRING 13 6 Connecting Pipes to the Indoor Unit 14 PIPING CONNECTION 15 7 Installation of Decorative Panel 16 8 Indoor Unit Drain Piping 18 HEAT INSULATION 19 1 PRECAUTIONS IN TEST RUN 19 CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE 19 2 Connection of power supply 20 3 Evaluation of the performance 20 1 Test Run Mode 21 2 Setting Address of Central Control 22 3 Thermist...

Page 3: ... follow the instruction Safety Precautions Installation Always install a dedicated circuit and breaker Improper wiring or installation may cause fire or electric shock Use the correctly rated breaker or fuse There is risk of fire or electric shock Do not use a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock For electrical wo...

Page 4: ... or damage to the product Be sure the installation area does not deteriorate with age If the base collapses the air conditioner could fall with it causing property damage product failure and personal injury Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open Moisture may condense and wet or damage furniture Do not store or use flamm...

Page 5: ...roduct To avoid vibration or water leakage Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods 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 Corrosi...

Page 6: ...er obstacles The indoor unit must keep the maintenance space Selection of the best location Unit cm Ceiling Ceiling Board Ceiling Board 30 or more Above 250 330 or less 100 or more 50 or more 50 or more 30 or less Floor More than 30cm Unit cm Ceiling Ceiling Board Ceiling Board 20 or more Above 250 330 or less 100 or more 50 or more 50 or more 30 or less Floor Please use an annexed sheet or the co...

Page 7: ...s a drain pump Horizontly install the unit using a level gauge During the installation care should be taken not to damage electric wires Ceiling opening dimensions and hanging bolt location The dimensions of the paper model for installing are the same as those of the ceiling opening dimensions Ceiling board Level gauge Ceiling 1 000 Ceiling opening 931 6 893 4 Hanging bolt 330 Hanging bolt 860 390...

Page 8: ...here sulfurous acid gas or corrosive gas is generated 5 Avoid places near high frequency generators Thoroughly study the following installation locations 1 In such places as restaurants and kitchens considerable amount of oil steam and flour adhere to the turbo fan the fin of the heat exchanger and the drain pump resulting in heat exchange reduction spraying dispersing of water drops drain pump ma...

Page 9: ...0 accessory Hanging bolt W3 8 or M10 Nut W3 8 or M10 Nut W3 8 or M10 Spring washer M10 Air Conditioner body Keep the length of mm between the air conditioner bottom surface and the ceiling surface Installation Manual 9 Installation of Indoor The following parts is option Hanging Bolt W 3 8 or M10 Nut W 3 8 or M10 Spring Washer M10 Plate Washer M10 CAUTION Tighten the nut and bolt to prevent unit f...

Page 10: ...ler board fit to the reclamation box if there is a reclamation box Install the 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...

Page 11: ... Please individually separate one at a time Please be careful not to damage the inside components when separating 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 ...

Page 12: ...ires Remote Controller Cable Connecting Cable Terminal Block of Outdoor Unit L N 1 L 2 N 3 4 1 L 2 N 3 4 5 Terminal Block of Indoor Unit POWER INPUT OPTION TO AIR FRESH KIT Electricwire Round crimp style terminal Attach insulation sleeve Connect wires of the same gauge to both sides WARNING Make sure that the screws of the terminal are free from looseness ...

Page 13: ... Feed the power source to the unit via a distribution switch board designed for this purpose 4 The terminal screws inside the control box may be loose due to vibration during transport Check the screws for loose connection Running the air conditioner with loose connection can overload and damage electrical components 5 Always ground the air conditioner with a grounding wire and connector to meet t...

Page 14: ...ng nut on Remove flare nuts attached to indoor and outdoor units than put them on pipe tube having completed burr removal Not possible to put them on after flaring work 4 Flaring work Carry out flaring work using dedicated flaring tool for R 410A as shown below Firmly hold copper tube in a bar or die as indicated dimension in the table above 5 Check Compare the flared work with figure below If fla...

Page 15: ...carried out using the service ports of both the liquid and gas side valves Connection of the pipes 1 When piping installation work you must be used the connector Connecting pipe size Outdoor unit Liquid side Flare connection Flare connection Gas side Indoor unit A B Gas side Liquid side A B A B 24k Ø15 88 Ø12 7 Ø9 52 Ø6 35 30k 36k Ø9 52 Ø6 35 Indoor Units Indoor Units Gas side Liquid side 7k 9k 12...

Page 16: ...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 and t...

Page 17: ...ver 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 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 ...

Page 18: ...kage Be sure to check the drain pump for normal operating and noise when electrical wiring is complete When the test is complete connect the flexible drain hose to the drain port on the indoor unit Air conditioner unit Ceiling board Decorative panel Decorative panel Fit the insulator this part and be careful for cool air leakage Good example Air Cool air leakage no good Bad example Ceiling board A...

Page 19: ...firstly even during heating season If heating operation is carried out firstly it leads to the trouble of compressor Then attention must be paid Carry out the test run more than 5 minutes without fail Test run will be cancelled 18 minutes later automatically The test run is started by pressing the room temperature checking button and down timer button for 3 seconds at the same time To cancel the t...

Page 20: ...me 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 voltage is maintained at more than 90 percent of the rated voltage marked on ...

Page 21: ...direction start stop button 4 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 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 R...

Page 22: ...t Indoor No by pressing button 5 Press button to save 6 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 7 If entering into address setup mode by using button it indicates as picture below 2 If pressing button long for 3 seconds it en...

Page 23: ...cally 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 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 se...

Page 24: ...Please press more than 3 seconds for sure 1 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 Ceiling height setting is available only for some products Ceiling height of ʻSuper highʼ function may not exist depending on the indoor unit...

Page 25: ...p mode Please press more than 3 seconds for sure 1 If pressing button repeatedly it moves to master slave selection menu as picture below 2 5 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 except one master remote controller to slave at group control When c...

Page 26: ...on repeatedly it moves to remote controller dry contact 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...

Page 27: ...mote controller setter setup mode If pressing once shortly it enters into user setup mode Please press more than 3 seconds for sure 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 00 Celsius 01 Fahrenheit 3 Press button to save or r...

Page 28: ...utton 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 If pressing button repeatedly it moves to the selected option function code 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 se...

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