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LG Multi Type Air Conditioner, Installation Manual

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LG Multi Type Air Conditioner Installation Manual Download Page 9

Installation of Indoor, Outdoor Unit  

Installation Manual  9

ENGLISH

3. Piping length and the elevation

24k Btu/h

15.88(5/8)

9.5(3/8)

7.5(25)

5(16)

35(0.38)

Gas

Liquid

Standard

Max.

Standard

Max.

Capacity

Pipe Size

Length A

Elevation B

*Additional

Unit : mm(inch)

Unit : m(ft)

Unit : m(ft)

refrigerant

Unit : g/m(oz/ft)

Oil trap

Gas piping

Liquid piping

Outdoor unit

Outdoor unit

Indoor unit

Indoor unit

*15m

* Install trap at each 

difference in height 
15m

A trap is not necessary when the 
outdoor unit is installed in a higher 
position than the indoor unit.

CAUTION:

• Rated performance for refrigerant line length of:7.5m(25ft)
• Capacity is based on standard length and maximum allowance length is on the

basis of reliability.

• Improper refrigerant charge may result in abnormal cycle.

50(164)

cassette type

30(98)

Floor standing type

30(98)

cassette type

20(66)

Floor standing type

Summary of Contents for Multi Type Air Conditioner

Page 1: ... com IMPORTANT Please read this installation 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 ...

Page 2: ...roperly insulate any tubing run inside a room to prevent sweating that can cause dripping and water damage to wall and floors in moist or uneven locatinons Use a raised concrete pad or concrete blocks provide a solid level foundation for the outdoor unit This prevents water damage and abnormal vibration in an area with high winds Securely anchor the outdoor unit down with bolts and a metal frame P...

Page 3: ...lation of Indoor Outdoor unit 7 The indoor unit installation 10 Remote controller installation 13 Wiring connection 16 Flaring Work and Connection of Piping 20 Installation to decorative panel 23 Indoor unit drain piping 25 Test running 29 Leakage test and Evacuation 32 Installation guide at seaside 33 ...

Page 4: ...ug or a loose socket which is damaged Otherwise it may cause a fire or electrical shock For installation of the product always contact the service center or a professional installation agency Otherwise it may cause a fire electrical shock explosion or injury Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit If the electrical part cover of the in...

Page 5: ... and may cause injury Do not share the outlet with other appliances It will cause an electric shock or a fire due to heat generation Do not use the damaged power cord Otherwise it may cause a fire or electrical shock Do not modify or extend the power cord randomly Otherwise it may cause a fire or electrical shock Take care so that the power cord may not be pulled during operation Otherwise it may ...

Page 6: ...p level parallel in installing the product Otherwise it may cause vibration or water leakage Avoid excessive cooling and perform ventilation sometimes Otherwise it may do harm to your health Use a soft cloth to clean Do not use wax thinner or a strong detergent The appearance of the air conditioner may deteriorate change color or develop surface flaws Do not use an appliance for special purposes s...

Page 7: ...e maintenance space Floor Standing type There should not be any heat source or steam near the unit There should not be any obstacles to prevent the air circulation A place where air circulation in the room will be good A place where drainage can be easily obtained A place where noise prevention is taken into consideration Do not install the unit near the door way Ensure the spaces indicated by arr...

Page 8: ...ndicated by arrows around front back and side of the unit 3 Do not place animals and plants in the path of the warm air 4 Take the air conditioner weight into account and select a place where noise and vibration are minimum 5 Select a place so that the warm air and noise from the air conditioner do not disturb neighbors more than 700 27 9 16 more than 300 11 7 16 more than 300 11 7 16 more than 60...

Page 9: ...d piping Outdoor unit Outdoor unit Indoor unit Indoor unit 15m Install trap at each difference in height 15m A trap is not necessary when the outdoor unit is installed in a higher position than the indoor unit CAUTION Rated performance for refrigerant line length of 7 5m 25ft Capacity is based on standard length and maximum allowance length is on the basis of reliability Improper refrigerant charg...

Page 10: ...nsure enough distance from the cooking room to install the air conditioner in such a place where it may not suck oily steam 2 Avoid installng air conditioner in such places where cooking oil or iron powder is generated 3 Avoid places where inflammable gas is generated 4 Avoid place where noxious gas is generated 5 Avoid places near high frequency generators NOTICE CAUTION This air conditioner uses...

Page 11: ...he paper model Flat washer for M10 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 15 18mm 5 8 3 4 inch between the air conditioner bottom surface and the ceiling surface 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 ...

Page 12: ...0 2 8 70 2 8 200 7 9 Unit mm inch 1 The mounting floor should be strong and solid enough to prevent it from vibration 2 Drill the piping hole with 70mm diameter hole core drill at either the right or the left of indoor unit The hole should be sightly slant to the outdoor side 3 Insert the plastic tube through the hole 4 Cut the extruded outside part of the plastic tube if necessary ...

Page 13: ...at Out door Time Timer On Set no Time Off 01 03 05 07 09 11 13 15 17 19 21 23 Since the room temperature sensor is in the remote controller the remote controller box should be installed in a place away from direct sunlight high humidity and direct supply of cold air to maintain proper space temperature Install the remote controller about 5ft 1 5m above the floor in an area with good air circulatio...

Page 14: ...top part of the wired remote controller to the installation board as shown in beside picture press the bottom part to assemble the controller to it s board When disassemble the wired remote controller from the installation board use the driver as shown in the right picture and insert it into the hole with the arrow And when you pull the driver in the front direction the wired remote controller wil...

Page 15: ... install the extension cable in the opposite direction the connector will not be connected Specification of extension cable 2547 1007 22 2 core 3 shield 5 or above Check whether the connector is connected correctly Connecting cable Indoor unit side HOW TO MOUNT ONTO A WALL HOW TO INSERT BATTERIES 1 Remove the battery cover from the remote controller Slide the cover according to the arrow direction...

Page 16: ... wiring is tightly connected RECOMMENDATION The power cord connected to the outdoor unit should be comply with the following specifications ETL recognized and CSA certified GN YL Line voltage 208 230V AWG12 GN YL AWG18 RECOMMENDATION When using the separate wires as the power cord please secure the separate wires into the control box panel using tie wraps to hold all wires together in place The po...

Page 17: ...supply line or connecting cables as the Fig 4 in order to prevent the connecting wires from being cut by sharp edge of the hole 5 Secure the Control Box Cover A to its original position with the help of Driver 6 Close the Front Door Fig 1 Detail Wiring for Indoor Unit Fig 3 Fig 2 2 Floor Standing type 1 Cassette type Open the control box cover and connect the Remote controller cord and Indoor powe...

Page 18: ...18 Air Conditioner Wiring Connection Lock nut field supply Conduit field supply Conduit panel Power supply line or Connecting cable Cap Remove Fig 4 ...

Page 19: ...ontrol 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 control to the original position with the screw 4 Use a recongnized circuit breaker between the power source and the unit A disconnection device to adequately disconnect all supply lines must ...

Page 20: ...nnect wiring to the terminals and fasten the wire tightly with the fixing screw of the terminal plate How to connect wiring to the terminals For strand wiring 1 Cut the wire end with a wire cutter or wire cutting pliers then strip the insulation to expose the strand wiring about 10 mm 3 8 2 Using a screwdriver remove the terminal screw s on the terminal plate 3 Using a round terminal fastener or p...

Page 21: ...r 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 flaring tool 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 If flare is noted to be defective cut off the flared section and do flaring work again Cop...

Page 22: ...o 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 CAUTION Use two wrenches and tighten with regular torque Outdoor unit Liquid side Flare connection Flare connection Gas side In...

Page 23: ...from 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 ...

Page 24: ...er 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 25: ...Incorrect Installation Examples How to use the finishing tape for the drainpipe Downward slope Do not raise Accumulated drain water Tip of drain hose dipped in water Air Kinking Water leakage Water leakage Ditch Less than 50mm 1 31 32 inch gap Water leakage Floor Standing Type Connecting pipe Glue Drain pipe Refrigerant pipe Refrigerant pipe Indoor unit Connecting wire Pipe Pipe Finishing tape Ins...

Page 26: ...n Drain test Feed water Drain Pump Drain pan Flexible drain hose accessory Main drain pipe Glue the joint Drain port Drain hose connection Use the clip accessory 1 50 1 100 Flexible drain hose Flexible drain hose Cassette Type Drain piping must have down slope 1 50 to 1 100 be sure not to provide up and down slope to prevent reversal flow During drain piping connection be careful not to exert extr...

Page 27: ...red Adiabatic glass wool with thickness 10 to 20mm Stick glass wool on all air conditioners that are located in ceiling atmosphere Heat insulation Attention 1 Possible drain head height is up to 700mm 27 9 16 inch So it must be installed below 800mm 32 1 2 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 thicker...

Page 28: ...ing around the pipings with gum type sealer Taping Drain hose Pipings Connecting cable Plastic Band Power supply cord In cases where the Outdoor unit is installed above the Indoor unit perform the following 1 Tape the piping and connecting cable from down to up 2 Secure the taped piping along the exterior wall Form a trap to prevent water entering the room 3 Fix the piping onto the wall by saddle ...

Page 29: ... temperature 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 2 Connection of power supply 1 Connect the power supply cord to the independent power supply Circuit breaker is required 2 Operate the unit for fifteen minutes or more 3 Evaluation of the ...

Page 30: ...ing High Fan Speed Airflow direction mode will be operated during 18 minutes with ignoring room temperature After running 18 minutes under test run mode system will automatically turn OFF In case of duct type the Airflow UP DOWN function is not displayed During test run mode receiving signal from wireless remote controller will release this operation If you press any kind of button Test Run mode w...

Page 31: ...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 the name plate 7 Confirm that the cable thickness is as specified in the power sources specification Particularly note the relation between cable length and thickness 8 Never fail to e...

Page 32: ...ce port with charge hoses CAUTION Be sure to use a manifold valve for leak testing The high side manifold valve must always be kept closed Pressurize the system to no more than 150 P S I G with dry nitrogen gas and close the cylinder valve when the gauge reading reached 150 P S I G Next test for leaks with liquid soap CAUTION To avoid nitrogen entering the refrigerant system in a liquid state the ...

Page 33: ...ounter clockwise to fully open the valve 2 Turn the valve stem of gas side valve counter clockwise to fully open the valve 3 Loosen the charge hose connected to the gas side service port slightly to release the pressure then remove the hose 4 Replace the flare nut and its bonnet on the gas side service port and fasten the flare nut securely with an adjustable wrench This process is very important ...

Page 34: ...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 the seaside set up a windbreak not to be exposed to the sea wind 3 Select a well drained place 1 If you can t meet above guide line in the seaside installation please contact LG Electronics for the additional anticorrosion treatment 2 Periodic more than...

Page 35: ...P No MFL40910613 ...

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