LG CEILING CASSETTE TYPE AIR CONDITIONERS Installation Instructions Manual Download Page 18

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2) Adjusting air volume to the height of ceiling

You can choose the RPM(or air volume) of indoor motor according to the height of ceiling to supply the
comfortable atmosphere to consumers.

Procedure

1. Choose the selectable position in the table after measuring the height of ceiling.

2. In the case of changing the height as "high" or "low", open the rear cover of the wired remote-controller.
3. Move the slide switch to the set position.

4. Close the rear cover and check if it works normally.

R14H

SW TH

REMO

MAIN

2TH

OP7

R18H

R17H

OP6

STAND

HIGH

R03S

C070

R04S

R02S

R01S

OP3

OP2

OP1

R19H

R11H

R13H

R12H

OP5R16H

OP4

R15H

CO1H

STAND

Slide switch for ceiling height

Slide switch for 2 Thermistor

Standard

(Default)

Low ceiling

High Ceiling

Ceiling height

Mode of slide switch

Change of air volume

Remark

more than 3.3m

High Ceiling

Increasing

2.7~3.3m

Standard

less than 2.7m

Low Ceiling

Decreasing

Manufactured in

standard mode

Summary of Contents for CEILING CASSETTE TYPE AIR CONDITIONERS

Page 1: ...n the power cord is damaged replacement work shall be performed by authorized personnel only Installation work must be performed in accordance with the national wiring standards by authorized personnel only P No 3828A20102U Outdoor Unit Indoor Unit Cooling Heating Model has included Drain Elbow Anti bacteria filter Air Intake Air Outlet Air Intake side rear Connecting Wire Drain Hose Power Wire Co...

Page 2: ...rmometer 1 Selection of the best location 4 2 Ceiling opening dimensions and hanging bolt location unit mm 5 3 The Indoor Unit Installation 6 4 Remote Controller Installation 6 5 Wiring Connection 8 ELECTRICAL WIRING 9 CONNECTING THE CABLE TO OUTDOOR UNIT 9 6 Connecting Pipes to the Indoor Unit 10 PIPING CONNECTION 11 7 Installation of Decorative Panel 12 8 Indoor Unit Drain Piping 13 HEAT INSULAT...

Page 3: ...ctions so the stress of the wires is not applied to the sections Incomplete installation could cause injury due to fire electric shock the unit falling or a leakage of water Consult the dealer from whom you purchased the unit or special installer Incomplete installation could cause a personal injury due to fire electric shock the unit falling or a leakage of water When installed in an insufficient...

Page 4: ...d be affected by hot air discharged Ensure the spaces indicated by arrows from the wall ceiling fence or other obstacles 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 yyy yyy y Floor More than 30cm Sunroof Fence or obstacles More than 70cm More than 50cm More than More than 30cm 30cm More than 30cm Indoor unit Outdoor unit...

Page 5: ...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 malfunction etc In these cases take the following actions Make sure 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 th...

Page 6: ...er 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 The room temperature sensor is built in the indoor unit This remote controller eq...

Page 7: ... driver etc Front case The lower part Face of wall Under plate Screw accessory WIRED REMOTE CONTROL INSTALLATION REMOTE CONTROL PREPARATION OPTIONAL DISASSEMBLING ELECTRICAL WIRING HOW TO MOUNT ONTO A WALL HOW TO INSERT BATTERIES Wire and make sure that teminal numbers are matched on unit side and remote controller side The maximum length of the cord is 100m If the length of the cord exceeds 50m u...

Page 8: ...2 48K Control box cover Indoor power cord Remote controller cord Control box cover Terminal Block of Outdoor Unit 1 L 2 N 3 4 5 1 L 2 N 3 4 5 Terminal Block of Outdoor Unit 1 L 2 N 3 4 5 Terminal Block of Indoor Unit Terminal Block of Indoor Unit POWER INPUT R S T N POWER INPUT R S T N 1 L 2 N 3 4 5 Terminal Block of Indoor Unit 3 L 4 N 5 6 7 1 L 2 N 3 L 4 N 5 6 7 8 Terminal Block of Outdoor Unit ...

Page 9: ...e LOCAL 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 cov...

Page 10: ...e 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 flare is noted to be def...

Page 11: ...er completing the piping connection be sure to check if there is gas leakage 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 Use two wrenches and tighten with regular torque Union Outdoor unit Liquid side Fl...

Page 12: ...louver motor connector and display connector 6 After tightening these screws install the air inlet grille including the air filter Decorative panel fixing screws hexagon M5 screws Temporally fitting at 2 places Tightening about 10mm Install the panel after making sure that the piping side of the unit body matches the piping indication of the decorative panel Control box cover Piping side Inlet Gri...

Page 13: ...ump Drain pan Flexible drain hose accessory Main drain pipe Glue the joint Drain port Drain hose connection Use the clip accessory Maintenance drain port Upward routing not allowed Pipe clamp Indoor unit 1 50 1 100 MAX 700mm CAUTION Piping material Polyvinyl chloride pipe VP 25 and pipe fittings The air conditioner uses a drain pump to drain water Use the following procedure to test the drain pump...

Page 14: ...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 outlet should keep distance fr...

Page 15: ...led 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 test run press any button After completing work be sure to measure and record trial run properties and store measured data etc Measuring items are room temperature outside temperature suction temperature blow out temperature ...

Page 16: ...switch between power source and the unit 3 The screw which 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 electrica...

Page 17: ...e of main body and of remote controller sensor 3 Move the slide switch to set position 4 Close the rear cover and check if it works normally TH R14H SW TH REMO MAIN 2TH OP7 R18H R17H OP6 LO STAND SW HIGH HI R03S C070 R04S R02S R01S OP3 OP2 OP1 R19H R11H R13H R12H OP5R16H OP4 R15H CO1H REMO Room Temp sensor 2TH MAIN Position 2 Position 1 Position 3 Slide switch for ceiling height Slide switch for 2...

Page 18: ...remote controller 3 Move the slide switch to the set position 4 Close the rear cover and check if it works normally 18 TH R14H SW TH REMO MAIN 2TH OP7 R18H R17H OP6 LO STAND SW HIGH HI R03S C070 R04S R02S R01S OP3 OP2 OP1 R19H R11H R13H R12H OP5R16H OP4 R15H CO1H Lo Hi STAND Slide switch for ceiling height Slide switch for 2Thermistor Standard Default Low ceiling High Ceiling Ceiling height Mode o...

Page 19: ...m set SUB FUNCTION SET TEMP Room Temp HI MED LO Heater Defrost Filter Preheat Out door Time Timer On Set no Time Off 01 03 05 07 09 11 13 15 17 19 21 23 Wired Remote Controller Slide Switch OP7 Remote Controller PCB Main PCB Indoor Unit 1 Terminal Local Supply Block Terminal Local Supply Block Terminal Local Supply Block Main PCB 1 Main PCB 2 Main PCB 16 Indoor Unit 2 Main PCB Indoor Unit 16 Conne...

Page 20: ...20 MEMO ...

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