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Ceiling Cassette
Air Conditioner
INSTALLATION MANUAL
IMPORTANT
• Please read this installation manual completely before
installing the product.
• When 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.
• Please retain this installation manual for future reference
after reading it thoroughly.
LG
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Summary of Contents for LG ATNW246PLF0
- Page 1 Ceiling Cassette Air Conditioner INSTALLATION MANUAL IMPORTANT • Please read this installation manual completely before installing the product. • When 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.
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Page 2: Table Of Contents
Ceiling Cassette Air Conditioner Installation Manual TABLE OF CONTENTS Installation Required Parts Required Tools Requirements ❏ Connecting cable ❏ Horizontal meter Safety Precautions......3 ❏ Pipes: Gas side ❏ Screw driver Liquid side ❏ Electric drill Introduction ........6 ❏ Hanging Bolt Symbols used in this Manual..6 ❏... -
Page 3: Safety Precautions
Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. I Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. This symbol indicates the possibility of death or serious injury. - Page 4 Safety Precautions For installation, always contact the dealer or an Do not install the product on a defective installation Authorized Service Center. stand. • There is risk of fire, electric shock, explosion, or • It may cause injury, accident, or damage to the injury.
- Page 5 Safety Precautions I Installation Always check for gas (refrigerant) Install the drain hose to ensure Keep level even when installing leakage after installation or repair that water is drained away the product. of product. properly. • Low refrigerant levels may •...
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Page 6: Introduction
Introduction Introduction Symbols used in this Manual This symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that may cause harm to the air conditioner. This symbol indicates special notes. NOTICE Features Anti-bacteria Air Outlet Air Inlet Remote Controller... -
Page 7: Installation
Installation Installation Installation Tools Figure Name Figure Name Screw driver Ohmmeter Electric drill Hexagonal wrench Measuring tape, Knife Ammeter Hole core drill Gas-leak detector Thermometer, Spanner Horizontal meter Torque wrench Flaring tool set Installation Manual 7... -
Page 8: Installation Of Indoor, Outdoor Unit
Installation Installation of Indoor, Outdoor Unit Selection of the best location 1) Indoor unit • There should not be any heat source or steam near the unit. Ceiling Ceiling Board • There should not be any obstacles to prevent Ceiling Board the air circulation. - Page 9 Pipe Size *Additional Length A(m) Elevation B(m) mm(inch) Model refrigerant (g/m) Liquid Standard Max. Standard Max. ATNW246PLF0 15.88(5/8") 9.52(3/8") ATNW306PLF0 15.88(5/8") 9.52(3/8") ATNW428MLF0 15.88(5/8") 9.52(3/8") ATNW488MLF0 15.88(5/8") 9.52(3/8") Outdoor unit Indoor unit Outdoor unit Oil trap Outdoor unit Indoor unit...
- Page 10 Installation 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. • Select and mark the position for fixing bolts and piping hole. • Decide the position for fixing bolts slightly tilted to the drain direction after considering the direction of drain hose.
- Page 11 Installation The Indoor Unit Installation Ceiling Keep the length of the bolt Hanging bolt from the bracket to 40mm (W3/8 or M10) Flat washer for M10 Air Conditioner body (W3/8 or M10) (accessory) Ceiling board Ceiling board Spring washer (M10) Keep the length of 15~18mm between the air conditioner bottom surface and the ceiling surface...
- Page 12 Installation WIRED REMOTE CONTROL INSTALLATION (PQRCUSA0) 1. Disassemble the 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 then you pull the driver in the front direction, the remote controller will be separated.
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Page 13: Remote Control Preparation
Installation 5. Use the connecting cable to connect the indoor unit and the remote controller. Check whether the connector is connected correctly. Indoor unit side Connecting cable 6. When the distance between the wired remote controller and the indoor unit is 10m and above, use the extension cable. - Page 14 Installation Wiring Connection • Open the control box cover and connect the Remote controller cord and Indoor power wires. Remote Controller Cable Connecting Cable 1(L) 2(N) 3 Outdoor Unit 1 Phase 24k/30k 1(L) 2(N) 1(L) 2(N) Indoor Unit Main Power 1Ø, 220V 3 Phase 1(L) 2(N) 3...
- Page 15 Installation 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.
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Page 16: Connecting The Cable To Outdoor Unit
Connecting the cable to Outdoor Unit • Remove the side panel for wiring connection. • Use the cord clamp to fix the cord. • Earthing work - Case 1 :Terminal block of Outdoor Unit have mark. • Connect the cable of diameter 1.6mm or more to the earthing terminal provided in the control box and do earthing. - Page 17 Installation Connecting Pipes to the Indoor Unit • Preparation of Piping Copper Main cause of gas leakage is defect in flaring Slanted Uneven Rough tube 90° work. Carry out correct flaring work in the following procedure. 1) Cut the pipes and the cable. •...
- Page 18 Installation Piping Connection 1. Form the piping according to its routing. Avoid bending and Liquid side bending back the same piping point more than three times. (This will result in hardening the pipe.) Indoor 2. After deforming the piping, align centers of the union fitting of unit the indoor unit and the piping, and tighten them firmly with Outdoor...
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Page 19: Connecting The Pipings To The Indoor Unit And Drain Hose To Drain Pipe
Installation Connecting the pipings to the indoor unit and drain hose to drain pipe • Align the center of the pipings and sufficiently tighten the flare nut by hand. • Tighten the flare nut with a wrench. Indoor unit tubing Flare nut Pipings Outside diameter... - Page 20 Installation • For the units with capacity 40k, 48k, the installation piping is connectable in four <Figure 1> directions.(refer to figure 1) Backward Sideways Forward Downward • When connecting in a downward direction, knock <Figure 2> out the knockout hole of the base pan. (refer to figure 2) Knock-out Base pan...
- Page 21 Installation Installation of Decorative Panel The decorative panel has its installation direction. Before installing the decorative panel, always remove the paper template. 1. Remove the packing and take out air inlet grille from front panel. Front grille 2. Remove the Corner covers of the panel. Coner cover 3.
- Page 22 Installation 5. Fit the corner covers. 6. Open two screws of control panel cover. Screw 7. Connect one display connector and two CN DISPLAY 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 CN VANE 1,2...
- Page 23 Installation CAUTION: Install certainly the decorative panel. Cool air leakage causes sweating. Water drops fall. Good example Bad example Air conditioner unit Air conditioner Cool air leakage unit (no good) Ceiling Ceiling board board Decorative Decorative panel panel Fit the insulator (this part) and be careful for cool air leakage Indoor Unit Drain Piping Upward...
- Page 24 Installation HEAT INSULATION 1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C). Fastening band 2. Precautions in high humidity circumstance: (accessory) This air conditioner has been tested according to the "KS Standard Conditions with Mist"...
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Page 25: Air Purging
Installation In case of the Outdoor Unit being installed above position of the Indoor Seal a small opening Unit. around the pipings with gum type sealer. 4. Tape the Pipings and Connecting cable from bottom to top. Trap 5. Form the pipings gathered by taping along the exterior wall, and make the trap prevent water from entering into the room. - Page 26 Installation 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 system. Usually, the cylinder is used in a vertical standing position. 7. Check for leakage with Liquid soap solution. Do the leakage test at all joints of tubing (indoor and outdoor) and on the service valve (both gas and liquid side).
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Page 27: Test Running
Installation 3. Once the desired vacuum is created. Disconnect the vacuum pump and open the liquid side valve stem by turning it to counter-clockwise direction with service valve wrench. 4. Open completely the gas side valve buy turning to counter-clockwise with service valve wrench. 5. - Page 28 Installation 3) Evaluation of the performance 1. Measure the temperature of the intake and discharge air. 2. Ensure the difference between the intake temperature and the discharge one is more than 8°C (Cooling) or reversely (Heating). Thermometer CAUTION After the confirmation of the above conditions, prepare the wiring as follows: 1) Never fail to have an individual power specialized for the air conditioner.
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Page 29: Installation Guide At The Seaside
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 once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water... - Page 30 Memo 30 Ceiling Cassette Air Conditioner...
- Page 31 P/No.: MFL42291410...