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INSTALLATION OF INDOOR, OUTDOOR UNIT

ENGLISH

Read completely, then follow step by step.

Select the best location

Do not have any heat or steam near the
unit.

Select a place where there are no obstacles
in front of the unit.

Make sure that condensation drainage can
be conveniently routed away.

Do not install near a doorway.

Ensure the spaces indicated by arrows from
the wall, ceiling, fence or other obstacles.

Use a stud finder to locate studs to prevent
unnecessary damage to the wall.

If an awning is built over the unit to prevent
direct sunlight or rain exposure, make sure
that heat radiation from the condenser is
not restricted.

Ensure that the spaces indicated by arrows
around front, back and side of the unit.

Do not place animals and plants in the path
of the warm air.

Take the air conditioner weight into account
and select a place where noise and
vibration are minimum.

Select a place so that the warm air and
noise from the air conditioner do not
disturb neighbors.

If the outdoor unit is installed on a roof
structure, be sure to level the unit. Ensure the
roof structure and anchoring method are
adequate for the unit location. Consult local
codes regarding rooftop mounting.

Install the indoor unit on the wall where
the height from the floors more than 2.3
meters. (ART COOL Type Only 1.5 m)

CAUTION

More than 20 cm

More than

10 cm

More than 2.3 m

More than

10 cm

More than 20 cm

More than

10 cm

More than 2.3 m

More than

10 cm

More than 20 cm

More

than 50 cm

More than 1.5 m

More

than 50 cm

More than 20 cm

More than

10 cm

More than 2.3 m

More than

10 cm

more than

70 cm

more than

30 cm

more than

30 cm

more than

60 cm

more than 60 cm

more than

70 cm

more than

30 cm

more than 60 cm

more than

30 cm

more than

60 cm

Indoor unit

Outdoor unit

Rooftop Installations

INSTALLATION OF INDOOR, OUTDOOR UNIT

Содержание A7UW40GFA0

Страница 1: ...rdance with the national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thoroughly MULTI www lg com Copyright 2012 2019 LG Electronics Inc All Rights Reserved INSTALLATION MANUAL AIR CONDITIONER MFL67655701 Rev 01_011719 ENGLISH ESPAÑOL PORTUGUESE ...

Страница 2: ...uality may deteriorate if the air conditioner is used for many hours Clean the air filter once every 2 weeks Dust and impurities collected in the air filter may block the air flow or weaken the cooling dehumidifying functions For your records Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes Write the model number and the serial number here...

Страница 3: ... the panel and the cover of control box securely There is risk of fire or electric shock due to dust water etc Use the correctly rated breaker or fuse There is risk of fire or electric shock Do not modify or extend the power cable If the power cable or cord has scrathes or skin peeled off or deteriorated then it must be replaced There is risk of fire or electric shock For installation removal or r...

Страница 4: ...h a stove or heating element etc Oxygen deficiency can occur and hence harm your health When the product is not to be used for a long time disconnect the power supply plug or turn off the breaker There is risk of product damage or failure or unintended operation Take care to ensure that nobody especially kids could step on or fall onto the outdoor unit This could result in personal injury and prod...

Страница 5: ...installation ventilate the area immediately Otherwise it can be harmfull for your health Dismantling the unit treatment of the refrigerant oil and eventual parts should be done in accordance with local and national standards Replace the all batteries in the remote control with new ones of the same type Do not mix old and new batteries or different types of batteries There is risk of fire or produc...

Страница 6: ...BLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT 20 Connect the cable to the Indoor unit 22 Connect the cable to the Outdoor unit 24 Connection of Wiring 25 CHECKING THE DRAINAGE AND FORMING THE PIPINGS 25 Checking the Drainage 26 Forming the Piping 27 AIR PURGING AND EVACUATION 27 Checking method 28 Evacuation 29 INSTALLATION PI485 30 TEST RUNNING 31 FUNCTION 31 DIP S W Setting 32 Forced Cooling Operatio...

Страница 7: ...EA Holder Remote Control Type A screw and plastic anchors Figure Figure Name Screw driver Electric drill Measuring tape Knife Hole core drill Spanner Torque wrench Multi meter Hexagonal wrench Ammeter Gas leak detector Thermometer Level Flaring tool set Name Installation Parts Installation Tools INSTALLATION ...

Страница 8: ...ioner 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 If the outdoor unit is installed on a roof structure be sure to level the unit Ensure the roof structure and anchoring method are adequate for the unit location Consult local codes regarding rooftop mounting Install the...

Страница 9: ...Fix the unit securely by means of the foundation bolts Prepare 4sets of M12 foundation bolts nuts and washers each which are available on the market It is best to screw in the foundation bolts until their length are 20mm from the foundation surface Unit mm Foundation bolt executing method 200 Nut 75 75 200 Spring washer Frame Anti vibration materials Four bolt are required 3 thread ridges H Beam C...

Страница 10: ...e Length Max Elevation h1 In In Elevation h2 1 Ø 40 100 50 50 15 30 15 48 135 55 80 15 30 15 56 145 55 90 15 30 15 h1 A Branch Pipe Main Pipe Distributor Distributor B h2 Distributor Type Capacity is based on standard length and maximum allowance length is on the basis of reliability If outdoor unit is at higher elevation than the indoor units after 24 m of vertical height 1 oil trap is required C...

Страница 11: ...ard Length x 20 g m CF Correction Factor x 100 h CF Max number of connectable indoor unit Total number of connected indoor unit Phase Capacity kBtu h Main Piping length Branch piping length Standard length m Additional refrigerant g m Standard length m Additional refrigerant g m 1 Ø 40 5 50 5 20 48 5 50 5 20 56 5 50 5 20 3 Ø 42 5 50 5 20 48 5 50 5 20 56 5 50 5 20 Total main pipe A B C 30 m Each br...

Страница 12: ... you remove burrs in order to avoid dropping burrs into the tubing Putting nut on Remove flare nuts attached to indoor and outdoor unit then put them on pipe tube having completed burr removal not possible to put them on after flaring work Flaring work Carry out flaring work using flaring tool as shown below Firmly hold copper pipe in a bar in the dimension shown in the table below Copper tube 90 ...

Страница 13: ...at the lowest side of the bundle Locating at the upper side can cause drain pan to overflow inside the unit Inclined Inside is shining without scratches Smooth all round Even length all round Surface damaged Cracked Uneven thickness Improper flaring Drain hose Drain hose Drain hose Connecting cable Gas side piping Liquid side piping Drain hose Loop Connecting pipe Connecting cable Tape Drain hose ...

Страница 14: ... flare nut with a wrench When extending the drain hose at the indoor unit install the drain pipe Wrap the insulation material around the connecting portion Overlap the connection pipe insulation material and the indoor unit pipe insulation material Bind them together with vinyl tape so that there is no gap Wrap the area which accommodates the rear piping housing section with vinyl tape Drain hose ...

Страница 15: ...nnecting pipe order 1 ROOM A E gas side pipe 2 ROOM A E liquid side pipe Finally tighten the flare nut with torque wrench until the wrench clicks When tightening the flare nut with torque wrench ensure the direction for tightening follows the arrow on the wrench Wrap with vinyl tape Drain hose Pipe Vinyl tape wide Ø 12 7 1 2 inch Connector Outdoor unit Main gas side valve Main liquid side valve Ga...

Страница 16: ...m entering 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 Outdoor unit Continuous Forward Sideways Backward Knock out Base pan Downward Gas side piping Bigger Dia Liquid side piping Smaller Dia Putty or insulating ma...

Страница 17: ...ld supply Insulation Insulation Insulation Insulation Tape field supply Tape field supply Tape field supply Tape field supply Ⓐ To Outdoor Unit Ⓑ To BD Unit Ensure that the branch pipes are attached horizontally or vertically see the diagram below Branch pipe should be insulated with the insulator in each kit Model Gas Pipe Liquid Pipe PMBL5620 Ø 19 05 Ø 19 05 Ø 19 05 Ø 9 52 Ø 9 52 Ø 9 52 PMBL1203...

Страница 18: ...iagram below for both ceiling suspended 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 50 30 111 B C 50 50 ...

Страница 19: ...er installing the hanger Screws M5 Screws M5 locally procude locally procude Screws M5 locally procude PE P E BD unit Six sided Nut Six sided Nut M10 or M8 M10 or M8 Six sided Nut M10 or M8 Hanger metal Hanger metal Hanger metal Flat washer Flat washer Flat washer Hanging bolt Hanging bolt Hanging bolt M10 or M8 15 00 NOTE This unit has two different installation types 1 Ceiling suspended type and...

Страница 20: ... The earth wire should be longer than the common wires The circuit diagram is not subject to change without notice When installing refer to the circuit diagram behind the panel front of Indoor Unit the wiring diagram on the Control Cover Inside Outdoor Unit The circuit diagram is not subject to change without notice Be sure to connect wires according to the wiring diagram Connect the wires firmly ...

Страница 21: ...with a cord set complying with the national regulation If the supply cable is damaged it must be replaced by a special cable or assembly available from the manufacturer of its service agent Provide a circuit breaker between power source and the unit as shown below Air Conditioner Main power source Circuit Breaker Use a circuit breaker or time delay fuse GN YL 20 mm NORMAL CROSS SECTIONAL AREA 0 75...

Страница 22: ...ower source 4 Confirm that electrical capacity is sufficient 5 See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate 6 Confirm that the cable thickness is as specified in the power source specification Particularly note the relation between cable length and thickness 7 Do not install an earth leakage circuit breaker in a wet or moist a...

Страница 23: ...wn in the figure below 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 terinal screws A screwdriver with a small head will strip the head and make proper tighterning impossible Over tightening the terminal screws may break them Round pressure terminal Power wire...

Страница 24: ...o the circuit diagram on the control cover inside outdoor unit 1 Remove the control cover Loosen the two screws and slide the cover in the direction of the arrow 2 Perform wiring with reference the wiring diagram on a control cover of outdoor unit Allow 300 mm for the pulling out section of harness Fix the wires completely with wire clamps 4 locations 3 Put in the cover in the direction of the arr...

Страница 25: ...eakage and goes out the drain exit Drain piping 1 The drain hose should point downward for easy drain flow 2 Do not make drain piping Drain pan Drain hose Leakage checking Connecting area drain hose Leakage checking Downward slope Do not raise Water leakage Accumulated drain water Air Waving Water leakage Tip of drain hose dipped in water Water leakage Ditch Less than 50mm gap CHECKING THE DRAINAG...

Страница 26: ...connecting cable from down to up 2 Secure the tapped piping along the exterior wall using saddle or equivalent Trap is required to prevent water from entering into electrical parts Plastic band Taping Drain hose Pipings Connecting cable Power supply cord Seal a small opening around the pipings with gum type sealer In cases where the Outdoor unit is installed above the Indoor unit perform the follo...

Страница 27: ...r than its bottom when you pressurize the system Usually the cylinder is used in a vertical standing position Do a leakage test of all joints of the tubing both indoor and outdoor and both gas and liquid side service valves Bubbles indicate a leak Be sure to wipe off the soap with a clean cloth After the system is found to be free of leaks relieve the nitrogen pressure by loosening the charge hose...

Страница 28: ...rvice port slightly to release the pressure then remove the hose 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 Lo Hi Manifold valve Vacuum pump Open Open Pressure gauge Indoor unit Outdoor unit Finishing the Job Use a vacuum pump or Inert nitrogen gas wh...

Страница 29: ...8 kBtu h 56 kBtu h INSTALLATION PI485 This is the space for installatio n of PI485 Gateway This is the space for installatio n of PI485 Gateway Accessor y Accessor y Please connect the wire after installing PI485 Please connect the wire after installing PI485 Gateway Gateway Screw Hole Screw Hole Screw Hole Screw Hole MEZ30171 802 MEZ30171 802 ...

Страница 30: ...e of the gas side service valve Measure the temperature of the intake and discharge of air Ensure the difference between the intake temperature and the discharge is more than 8 C For reference the gas side pressure of optimum condition is as below Cooling Refrigerant Outside ambient TEMP The pressure of the gas side service valve R410A 35 C 95 F 8 5 9 5 kg cm2 G 120 135 P S I G NOTE If the actual ...

Страница 31: ...tep 2 Mode Lock Cooling Night Quiet Mode Step 1 Mode Lock Cooling Night Quiet Mode Step 2 Mode Lock Cooling Saving Power Consumption Step 1 Mode Lock Cooling Saving Power Consumption Step 2 Mode Lock Heating Saving Power Consumption Step 1 Mode Lock Heating Saving Power Consumption Step 2 When you set the dip switch you should turn off the circuit breaker or shut the power source of the product do...

Страница 32: ...fter 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 of refrigerant 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 CAUTION ...

Страница 33: ...ly after finishing wiring error check If Outdoor and Indoor temperature is too low in winter the wiring error check function will not be operated Red LED is lighting Power consumption and current Nomal Time Step 1 Step 2 Wiring Error Check You can check whether or not the wiring is correct Setting Procedure 1 Set the DIP Switch as follow after shutting the power source down 2 Reset the power 3 Che...

Страница 34: ... 18 20 22 Saving Power Consumption step 1 Mode Lock Cooling Saving Power Consumption step 2 Mode Lock Cooling Saving Power Consumption step 1 Mode Lock Heating Saving Power Consumption step 2 Mode Lock Heating Mode Lock Cooling Night Quiet Mode step 1 Mode Lock Cooling Night Quiet Mode step 2 Step 1 Step 2 h Noise level Step 1 Step 2 If comp frequency and fan speed are down the cooling capacity ma...

Страница 35: ...ode Saving Power Consumption with Mode Lock Mode Lock Cooling 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 ...

Страница 36: ...CITY OF INDOOR UNIT Sum up the capacity of all indoor unit but high static duct type indoor unit capacity weights 1 3 times Ex 1 Outdoor unit A9UW566FA3 FM56AH connectable maximum capacity is 73 kBtu Indoor unit AMNH186BHA0 MB18AH AMNH246BHA0 MB24AH AMNH246BHA0 MB24AH 18 24 24 x 1 3 66 x 1 3 85 8 kBtu this combination has a some problem 2 Out door unit FM56AH Indoor unit AMNH186BHA0 MB18AH AMNH246...

Страница 37: ...ct a well drained place Sea wind Sea wind Sea wind Windbreak Periodic more than once year cleaning of the dust or salt particles stuck on the heat exchanger by using water Air conditioners should not be installed in areas where corrosive gases such as acid or alkaline gas are produced Do not install the product where it could be exposed to sea wind salty wind directly It can result corrosion on th...

Страница 38: ...t 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 must be more than 2 times the snowfall and its widt...

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