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Installation Manual

Installation

ENGLISH

Set screw of
paper model (4 pieces)

Paper model
for 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 board
along the outer edge of the
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)

Keep the length of 31~34 mm(1.22~1.34 inch)
between the air conditioner bottom surface
and the ceiling surface

Air Conditioner body

• The following parts are local purchasing.

①

Hanging Bolt - W 3/8 or M10

②

Nut - W 3/8 or M10

③

Spring Washer - M10

④

Plate Washer - M10

CAUTION

Tighten the nut and bolt to prevent unit
from falling off.

1(L1)

2(L2)

Terminal Block of Indoor Unit

Connected to outdoor unit

OPTION

TO AIR
FRESH

KIT

TQ/TR series

Connecting Cable

Conduit

Screw

Conduit bracket

• Remove the busing rubber product attached on the indoor unit.
• Join the conduit and the conduit bracket together using nut.
• Set the connecting cable into the terminal block of indoor unit, and tighten set screw to lock the

conduit bracket to the indoor unit.

• Open the control box cover and connect the remote control cord and indoor power wires.

Conduit connection

Wiring Connection

How to Fix

Содержание A8UW54GFA0

Страница 1: ...cordance with the national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thoroughly INSTALLATION MANUAL AIR CONDITIONER MFL68280103 Rev 04_122120 www lghvac com www lg com Copyright 2015 2020 LG Electronics Inc All Rights Reserved ENGLISH FRANÇAIS ESPAÑOL ...

Страница 2: ...ON INSTRUCTIONS Do not turn on the breaker or power under condition that front panel cabinet top cover control box cover are removed or opened Otherwise it may cause fire electric shock explosionor death WARNING SPECIAL WARNINGS ...

Страница 3: ... work 30 Connection of piping Outdoor 33 Installation 34 Installation of The Main Unit 35 CONNECTING THE CABLE BETWEEN INDOOR UNIT DISTRIBUTOR UNIT AND OUTDOOR UNIT 35 Connect the cable to the Indoor unit 36 Connect the cable to the Distributor unit 38 Connect the cable to the Outdoor unit 40 Connection method of the connecting cable Example 41 CHECKING THE DRAINAGE INSULATING THE PIPE AND SPECIAL...

Страница 4: ...pe C screw Type B screw Type C screw Remote control holder Remote control holder Type 3 Type 4 Installation plate Installation plate Name Quantity Shape for gas pipe for liquid pipe Clamp metal 1 EA Insulation for fitting 1 set Clamp 8 EA Screws for duct flanges 1 set Conduit Bracket Screw M4 2 EA Conduit Bracket 1 EA Name Quantity Shape for gas pipe Conduit Bracket Screw M4 2 EA for liquid pipe C...

Страница 5: ...shock Do not keep or use flammable gases or combustibles near the air conditioner Otherwise it may cause a fire or the failure of product Ensure that an installation frame of the outdoor unit is not damaged due to use for a long time It may cause injury or an accident Do not disassemble or repair the product randomly It will cause a fire or electrical shock Do not install the product at a place th...

Страница 6: ...power plug out if necessary holding the head of the plug and do not touch it with wet hands Otherwise it may cause a fire or electrical shock Do not use the power cord near the heating tools Otherwise it may cause a fire and electrical shock Do not open the suction inlet of the indoor outdoor unit during operation Otherwise it may electrical shock and failure Do not allow water to run into electri...

Страница 7: ...ng the product Otherwise it may cause vibration or water leakage Do not install the unit in potentially explosive atmospheres Operation 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 ...

Страница 8: ...or more Ceiling Unit mm inch Ceiling Concealed Duct Type Ceiling Cassette Type ART COOL Gallery Console 600 23 5 8 600 23 5 8 Inspection hole 600 23 5 8 x 600 23 5 8 Control box Ceiling Ceiling Board Ceiling Board At least 3 600 141 23 32 or less 1 000 39 3 8 or more 500 19 11 16 or more 10 13 32 or more 500 19 11 16 or more 300 11 13 16 or less 30 1 3 16 3 1 8 More than 200 7 87 100 More than 500...

Страница 9: ...tion of the outdoor unit and where even installation is possible 7 Place that has no direct influence of snow or rain 8 Place with no danger of snowfall or icicle drop 9 Place without weak floor or base such as decrepit part of the building or with a lot of snow accumulation Rooftop Installations If the outdoor unit is installed on a roof structure be sure to level the unit Ensure the roof structu...

Страница 10: ...r unit is to be installed close to the seaside direct exposure 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 windbreaker barrier to lessen the unit s exposure to sea air 3 Select a well drained place It should be strong enough like concrete to obstruct the wind from the sea The...

Страница 11: ...ole the system may malfunction If it is installed at snowy area attach the hood to the system Install the outdoor unit at the higher installation console by 50 cm than the average snowfall annual average snowfall if it is installed at the area with much snowfall Where snow accumulated on the upper part of the Outdoor Unit by more than 10 cm always remove snow for operation 1 The height of H frame ...

Страница 12: ...e Diameter Unit mm inch Gas Liquid 7 9 12 15 9 52 3 8 6 35 1 4 15 Console 18 24 12 7 1 2 6 35 1 4 36 15 88 5 8 9 52 3 8 Calculation method for total capacity index sum up the capacity index of connected indoor units h Total capacity index Sum of all VAHU Ceiling Concealed Duct High Static type indoor units capacity if any x 1 3 Sum of all other indoor unit s capacity h The multiplier 1 3 is only n...

Страница 13: ... Indoor unit Capacity kBtu h class Pipe Diameter Unit mm inch Gas Liquid 7 9 12 15 9 52 3 8 6 35 1 4 15 Console 18 24 12 7 1 2 6 35 1 4 36 15 88 5 8 9 52 3 8 Calculation method for total capacity index sum up the capacity index of connected indoor units h Total capacity index Sum of all VAHU Ceiling Concealed Duct High Static type indoor units capacity if any x 1 3 Sum of all other indoor unit s c...

Страница 14: ...iping hole 5 Insert the connecting cable into the indoor unit Don t connect the cable to the indoor unit Make a small loop with the cable for easy connection later 6 Tape the tubing and drain hose 7 Indoor unit installation Hang the indoor unit from the hooks at the top of the installation plate Insert the spacer etc between the indoor unit and the installation plate and separate the bottom of the...

Страница 15: ...ng holder Backwards Left Pipe Port 5 Indoor unit installation 1 Hook the indoor unit onto the upper portion of the installation plate engage the three hooks at the top of the indoor unit with the upper edge of the installation plate Ensure that the hooks are properly seated on the installation plate by moving it left and right 2 Unlock the tubing holder from the chassis and mount between the chass...

Страница 16: ... Open end wrench fixed Connection pipe Flare nut Vinyl tape narrow Adhesive Drain pipe Indoor unit drain hose CAUTION Installation Information For left piping Follow the instruction below Good case Press on the upper side of clamp and unfold the tubing to slowly downward Bad case Bending the pipe from right to left may cause damage to the tubing Outside diameter Torque mm inch N m kgf m lbf ft Ø 6...

Страница 17: ...ol Libero Type 1 Mount the tubing holder in the original positon 2 Ensure that the hooks are properly seated on the installation plate by moving it left and right 3 Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots clicking sound 4 Finish the assembly by screwing the unit to the installation plate by using two pieces of type C s...

Страница 18: ... 2 11 20 Ø 65 2 11 20 110 4 11 32 110 4 11 32 90 317 32 70 2 3 4 Chassis Hook Installation Plate Type A Left rear piping Right rear piping Ø 65 2 11 20 133 5 1 4 Ø 65 2 11 20 100 3 15 16 Chassis Hook Installation Plate Type A Left rear piping Right rear piping Ø 65 2 11 20 133 5 1 4 95 5 3 4 217 8 17 32 175 6 7 8 442 17 13 32 442 17 13 32 Ø 65 2 11 20 Installation Plate Chassis Hook Type A Screws ...

Страница 19: ...age four tabs on the top inside edge of the chassis Press the Grille toward the chassis until it goes back into place Connecting cable Conduit connection 1 Set the connecting cable into the terminal block of indoor unit and tighten set screw to lock the conduit bracket to the indoor unit 2 Join the conduit and the conduit bracket together Connecting cable Lock nut Conduit Conduit bracket Terminal ...

Страница 20: ... enough to cover all noxious gases from this place Ensure enough distance from the cooking room to install the air conditioner in such a place where it may not suck oily steam 2 Avoid installing 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 frequenc...

Страница 21: ...nditioner body Air Conditioner body The following parts are local purchasing 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 from falling off 1 L1 2 L2 3 4 5 Terminal Block of Indoor Unit Connected to outdoor unit OPTION TO AIR FRESH KIT TQ TR series Connecting Cable Conduit Screw Conduit bracket Remove the busing rubbe...

Страница 22: ...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...

Страница 23: ...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 10 m 32 8 ft Please check if connector is normally connected Connecting cable Indoor Unit side 12 V Red Signal Yellow GND Black...

Страница 24: ...nel 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 tighten a...

Страница 25: ... 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 ...

Страница 26: ...d confirmed that there is not any default However if it is operated for a long time in high humid atmosphere dew point temperature more than 23 C 73 4 F water drops are liable to fall In this case add heat insulation material according to the following procedure Heat insulation material to be prepared Adiabatic glass wool with thickness 10 to 20 mm Stick glass wool on all air conditioners that are...

Страница 27: ...eave it provisionally until the test comes to an end Feed water to the flexible drain hose and check the piping for leakage 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 The air conditioner uses a drain pump to drain water Use the following procedure to...

Страница 28: ...nation Prevent any upward flow or reverse flow in any part 3 5 mm 3 16 inch or thicker formed thermal insulator is provided for the drain pipe 4 Upward routing is not allowed 5 Be sure to check the drain pump for normal operation and abnormal noise when electrical wiring is complete 1 50 1 100 MAX 700 mm 27 9 16 inch Elbow Drain pump Unit Drain pipe Local supply Thermal insulator Local supply Wall...

Страница 29: ...han put them on pipe tube having completed burr removal Not possible to put them on after flaring work 4 Flaring work n 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 n Compare the flared work with figure n If flare is noted to be defective cut off the flared section and do flaring work again Copper...

Страница 30: ...8 1 4 1 8 10 13 Ø 9 52 3 8 34 42 3 5 4 3 25 31 Ø 12 7 1 2 49 61 5 0 6 2 36 45 Ø 15 88 5 8 69 82 7 0 8 4 51 60 Ø 19 05 3 4 100 120 10 0 12 2 73 88 Outdoor unit 36 42 kBtu h class only indoor units 18 24 kBtu h class only indoor units 36 kBtu h class connect D ROOM BD Unit PMBD3641 BD Unit PMBD3640 A ROOM B ROOM C ROOM D ROOM A ROOM B ROOM C ROOM D ROOM BD Unit Refrigerant Connections Pipe Size inch...

Страница 31: ... Figure3 Plug the pipe through holes with putty or insulation material procured locally to stop up all gaps as shown in the figure 3 Insects or small animals entering the outdoor unit may cause a short circuit in the electrical box Forward Sideways Backward Knock out Base pan Downward Gas side piping Bigger Dia Liquid side piping Smaller Dia Putty or insulating material produced locally Drain hose...

Страница 32: ...nit A B Facing upwards Facing downwards Within 3 Within 3 Liquid and gas pipe joints Insulator included with kit Insulator for field piping Tape field supply Liquid and gas pipe joints Insulation Branch For detailed dimensions refer to the printed materials enclosed at the time of purchase the branch pipe Ensure that the branch pipes are attached horizontally or vertically see the diagram below Br...

Страница 33: ...installation and wall mounted installation This unit does not require drain treatment as it uses internal foam treatment as low pressure piping insulation Service direction is the side B and C The piping for the indoor unit may be led around in direction A The inclination of side B must be within 5 degrees forward or back or to the sides Min 400 15 3 4 Min 30 1 3 16 Min 100 3 15 16 Min 400 15 3 4 ...

Страница 34: ...hanging bolt 3 Install a hexagon nut and a flat washer locally procured to the hanging bolt as shown in the figure in the left and lift the main unit to hang on the hanger metal 4 After checking with a level that the unit is level tighten the hexagon nut The tilt of the unit should be within 5 in front back and left right CAUTION Once a screw hole on the main unit has had a screw hammered in make ...

Страница 35: ...cord connected to the outdoor unit should comply with the following specifications NRTL Recognized for example UL or ETL recognized and CSA certified Air Conditioner Main power source Circuit Breaker Use a circuit breaker or time delay fuse Line voltage 208 230 V GN YL 20 mm 25 32 inch GN YL 20 mm 25 32 inch RECOMMENDATION When using separate wires as the power cord please secure separate wires in...

Страница 36: ...from top to bottom in order of 1 2 and 3 NOTICE Connect the cable to the Distributor unit For wiring use the designated power wire and connect firmly then secure to prevent outside pressure being exerted on the terminal block Use an appropriate screwdriver for tightening the terminal screws A screwdriver with a small head will strip the head and make proper tightening impossible Over tightening th...

Страница 37: ...cover of outdoor unit Allow 300 mm 11 13 16 inch for the pulling out section of harness Fix the wires completely with wire clamps 4 locations 4 Put in the cover in the direction of the arrow then tighten the screws A room B room C room A B C CN PWR Connection wire for indoor units AWG 18 4 Connection wire for outdoor units AWG 16 4 Lock nut field supply Lock nut field supply Lock nut field supply ...

Страница 38: ...minal Block C Unit Indoor Unit Terminal Block D Unit Indoor Unit Terminal Block E Unit Indoor Unit Terminal Block F Unit Indoor Unit Terminal Block G Unit Indoor Unit Terminal Block H Unit 18 24 kBtu h class 30 36 kBtu h class 48 54 kBtu h class BD Unit A BD Unit A A Room B Room C Room D Room A Room B Room C Room D Room BD Unit B BD Unit B 1 L1 2 L2 3 A 1 L1 2 L2 3 B L1 L2 L L1 N L2 S L L1 N L2 S ...

Страница 39: ...ct burial listed approved for wet conditions Temperature rated for 20 4 to 90 194 And this cable should be enclosed in conduit WARNING Be sure to comply with local and national codes while running the wire from the indoor unit to the outdoor unit size of wire and wiring method etc Every wire must be connected firmly No wire should be allowed to touch refrigerant tubing the compressor or any moving...

Страница 40: ...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 pliers securely clamp each stripped wire end with a round t...

Страница 41: ...uivalent 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 Secure the piping onto the wall using a saddle or equivalent Trap is required to prevent water from entering into electrical parts Plastic band Seal...

Страница 42: ...sting The high side manifold valve must always be kept closed Pressurize the system to no more than 550 P S I G with dry nitrogen gas and close the cylinder valve when the gauge reading reached 550 P S I G Next test for leaks with liquid soap CAUTION To avoid nitrogen entering the refrigerant system in a liquid state the top of the cylinder must be higher than its bottom when you pressurize the sy...

Страница 43: ...lly 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 to prevent leakage from the system 5 Replace the valve caps at both gas and liquid side service valves a...

Страница 44: ...0 22 30 98 4 30 75 246 25 82 3 9 8 20 0 22 30 98 4 36 75 246 25 82 3 9 8 20 0 22 30 98 4 Outdoor Unit Capacity kBtu h class Max total length of all pipes A B A B C A B C D Max length of each pipe A B C D Min length of each pipe A B C D Additional Refrigerant Unit g m oz ft Standard Total Piping Length NoAdd l refrigerant Unit m ft Unit m ft Each branch pipe a 82 ft b 16 ft c 49 ft Additional Charg...

Страница 45: ...ing Length Main Standard Length x 0 55 A Room Branch Length Standard Length x 0 22 B Room Branch Length Standard Length x 0 22 C Room Branch Length Standard Length x 0 22 CF Correction Factor x 3 53 h CF Max number of connectable indoor unit Total number of connected indoor unit Total main pipe A B C 98ft Each branch pipe a 33 ft b 26 ft c 16 4 ft d 10 ft e 33 ft v Additional Charge 98 16 4 0 55 3...

Страница 46: ...ct the wire after installing the LGAP This is the space for installation of PI485 Gateway This is the space for installation of PI485 Gateway Accessory Accessory Please connect the wire after installing PI485 Please connect the wire after installing PI485 Gateway Gateway Screw Hole Screw Hole Screw Hole Screw Hole MEZ3017180 2 MEZ3017180 2 60 kBtu h This is the space for installation of PI485 Gate...

Страница 47: ...g and wiring have been properly connected Check that the gas and liquid side service valves are fully open Bolt Tubing connection Discharge temperature Discharge air Intake temperature Discharge temperature Discharge air Intake temperature Discharge temperature Discharge air Intake temperature Test Running Use 2 AAA 1 5 volt batteries Do not use rechargeable batteries Remove the batteries from the...

Страница 48: ... Night Quiet Mode Step 1 5 Mode Lock Cooling Night Quiet Mode Step 2 5 Mode Lock Cooling Saving Power Consumption Step 1 5 Mode Lock Cooling Saving Power Consumption Step 2 5 Mode Lock Heating Saving Power Consumption Step 1 5 Mode Lock Heating Saving Power Consumption Step 2 1 2 3 4 5 6 5 DIP S W Setting WARNING When you set the DIP switch you should turn off the circuit breaker or shut the power...

Страница 49: ... The indoor unit is operated by force 4 Add the specific amount of refrigerant CAUTION When the green LED of PCB is on compressor is going to be off because of low pressure You should return the DIP Switch to operate normally after finishing the operation Forced Cooling Operation 18 24 1Ø kBtu h 48 54 1Ø kBtu h 30 36 1Ø kBtu h DIP SW1 5 DIP SW1 5 SW1 5 60 1Ø kBtu h DIP_SW01D 6 DIP SW2 1 2 3 4 5 6 ...

Страница 50: ...h as follow after shutting the power source down 2 Reset the power 3 Check that the Re and Green LED of PCB are on during work The indoor unit is operated by force 4 If the wiring is correct the Green LED will light up If the wiring is wrong display as below Display only wrong connection Red LED Piping Number Green LED Wiring Number Room 5 You should return the DIP Switch to operate normally after...

Страница 51: ... Lock Cooling Night Quiet Mode step 2 Step 1 Step 2 h Noise level Step 1 Step 2 Night Quiet Mode CAUTION If comp frequency and fan speed are down the cooling capacity may decrease accordingly This function is only available for Cooling Mode If you want to stop the Night Quiet Mode Change the DIP Switch If operating indoor unit is set by the fan speed Power Night Quiet Mode will be stopped until fa...

Страница 52: ...ng Night Quiet Mode step 1 Mode Lock Cooling Night Quiet Mode step 2 Mode Lock Cooling Saving Power Consumption step 1 Mode Lock Heating Saving Power Consumption step 1 Mode Lock Cooling Saving Power Consumption step 2 Mode Lock Heating Saving Power Consumption step 2 Only Cooling Mode Only Heating Mode Mode Lock 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 5 5 1 2 3 4 5 6 1 2 3 4 5 6 5 5 1 2 3 4 5 6 1 2 3...

Страница 53: ... 1 page 2 page 1 time Low Pressure 890 kpa LP 89 2 time Hi Pressure 2 900 kpa HP 290 3 time Discharge Temp 85 C DS 85 4 time Cond Out Temp 10 C CS 10 5 time Suction Temp 10 C SS 10 6 time ODU Air Temp 10 C AS 10 7 time Current 15 A A 15 8 time Voltage 230 V V 230 9 time Comp Hz 100 Hz F 100 10 time DC Link Voltage 230 V dc 230 PCB Display 18 24 60 k Model Only WARNING When you push the Tact Switch...

Страница 54: ...mmendation it will have some problems in low ambient condition i e some indoor unit will not be able to heat very well in heating mode CALCULATION METHOD FOR THE CONNECTABLE TOTAL CAPACITY OF INDOOR UNIT Sum up the capacity of all indoor unit but high static duct and VAHU type indoor unit capacity multiplier 1 3 times in which multiplier is unless only HSD VAHU are connected Ex 1 Outdoor unit A8UW...

Страница 55: ...ng contractor of your product as warranty service will be provided by them 2 If you have service issues that have not been addressed by the contractor please call 1 888 865 3026 CANADA Service call Number 888 LG Canada 888 542 2623 ...

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