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INSTALLATION MANUAL
AIR CONDITIONER
• 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.
TYPE : Multi Type
P/NO : MFL39817320
www.lg.com
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Table of Contents
Related Manuals for LG A4UQ306FA2
Summary of Contents for LG A4UQ306FA2
- Page 1 • 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. TYPE : Multi Type www.lg.com P/NO : MFL39817320...
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Page 2: Table Of Contents
Multi Type Air Conditioner Installation Manual CONTENTS Required Tools Installation Requirements Installation Parts Provided.........3 Safety Precautions..........4~5 o Level gauge o Screw driver Installation of indoor, outdoor unit .......6~9 o Electric drill o Hole core drill (ø65mm) o Horizontal meter o Flaring tool set o Specified torque wrenches Flaring work and connection of piping.....10~17 1.8kg.m, 4.2kg.m, 5.5kg.m, 6.6kg.m... -
Page 3: Installation Parts Provided
Installation Parts Provided Installation Parts Provided Standard Type Installation plate Type "B" screws (2EA) Type "A" screw Type "A" screw Type "A" and "C" screw Type "A" and "C" screw (6 EA) (8 EA) (5 EA) (2 EA) (5 EA) (2 EA) Holder Remote Control Installation Manual 3... -
Page 4: Safety Precautions
Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. WARNING This symbol indicates the possibility of death or serious injury. - Page 5 Safety Precautions Do not touch(operate) product with wet If strange sound, smell or smoke come from hands. product, turn the breaker off. • Otherwise, it may cause fire or electric shock. • Otherwise, it may cause electric shock or fire. Do not put the heater, etc.
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Page 6: Installation Of Indoor, Outdoor Unit
Installation of Indoor, Outdoor Unit Installation of Indoor, Outdoor Unit Read completely, then follow step by step. Select the best location Select the best location Indoor unit 1. Do not allow any heat or steam to be near More than 200mm the unit. - Page 7 Installation of Indoor, Outdoor Unit Fixing Installation Plate The wall you select should be strong and Installation Plate solid enough to prevent vibration 1. Mount the installation plate on the wall with Chassis type "A" screws. If mounting the unit on a Hook concrete wall, use anchor bolts.
- Page 8 Installation of Indoor, Outdoor Unit Drill a hole in the wall • Drill the piping hole with a ø70mm hole core Standard / Artcool Mirror type drill. Drill the piping hole at either the right or WALL Indoor Outdoor the left with the hole slightly slanted to the outdoor side.
- Page 9 Installation of Indoor, Outdoor Unit Refrigerant charge The calculation of the additional charge should be taken in account for the length of extra pipe. Multiple Piping Models Standard Max piping for Max total Piping Additional Model length(m) one room(m) Length(m) Charge(g/m) Distributor type Models Main Piping length...
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Page 10: Flaring Work And Connection Of Piping
Flaring Work and Connection of Piping Flaring Work and Connection of Piping Flaring work Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. Cut the pipes and the cable. 1. - Page 11 Flaring Work and Connection of Piping Check 1. Compare the flared work with figure below. Smooth all round Inside is shiny without scratches 2. If flare is noted to be defective, cut off the flared section and do flaring work again. = Improper flaring = Inclined Surface...
- Page 12 Flaring Work and Connection of Piping Indoor unit installation 1. Hook the indoor unit onto the upper portion of the installation plate.(Engage the two hooks Connecting cable of the rear top of the indoor unit with the upper edge of the installation plate.) Ensure that the hooks are properly seated on the Drain hose installation plate by moving it left and right.
- Page 13 Flaring Work and Connection of Piping 3. Bundle the piping and drain hose together by Wrap with vinyl tape wrapping them with vinyl tape over the range Pipe within which they fit into the rear piping housing section. Vinyl tape(wide) Drain hose CAUTION: Installation Information (For right piping) For right piping, follow the instruction below.
- Page 14 Flaring Work and Connection of Piping • For the units with capacity more than 48 kBtu/h, the installation piping is connectable in four Continuous directions.(refer to figure 1) • When connecting in a downward direction, knock out the knockout hole of the base pan. (refer to figure 2) Preventing foreign objects from entering (Figure3)
- Page 15 Flaring Work and Connection of Piping Branch [unit:mm] Model Gas Pipe Liquid Pipe Ø19.05 Ø9.52 Ø19.05 Ø9.52 PMBL5620 Ø9.52 Ø19.05 PMBL1203F0 Ø9.52 Ø9.52 Ø19.05 Y branch To Outdoor Unit To BD Unit • Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.) Horizontal Facing upwards...
- Page 16 Flaring Work and Connection of Piping Installation • This unit may be installed suspended from the ceiling or mounted on the wall. • This unit may only be installed horizontally , as shown in the diagram below.(Side B is facing up) However, it may be freely installed in any direction forward or back, and to the sides.
- Page 17 Flaring Work and Connection of Piping Installation of The Main Unit NOTICE • This unit has two different installation types: (1) Ceiling-suspended type and (2) wall-mounted type. • Choose the proper installation pattern according to the location of installation. • The installation location for printed wiring board can be changed.
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Page 18: Connecting The Cable Between Indoor Unit And Outdoor Unit
Connecting the Cable between Indoor Unit and Outdoor Unit Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Indoor unit. Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually according to the outdoor unit connection. - Page 19 Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Outdoor unit. 1. Remove the cover control from the unit by 1. Remove the cover control from the unit by Outdoor unit loosening the screw. loosening the screw. Holder for Terminal block Connect the wires to the terminals on the...
- Page 20 Connecting the Cable between Indoor Unit and Outdoor Unit Connection of Wiring • Connect refrigerant pipes and connection wires to the appropriate ports maked with matching alphabets (A, B and C) on this unit. • Follow the instructions on the wiring nameplate to connect the connection wires of indoor/outdoor units to terminal board numbers.(1, 2 and 3) Always fix each ground wire separately with a ground screw.(See the figure below.) •...
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Page 21: Checking The Drainage, Forming The Pipings And Long Pipe Setting
Checking the Drainage, Forming the Pipings and Long Pipe Setting Checking the Drainage, Forming the Pipings and Long Pipe Setting Checking the drainage To check the drainage. 1. Pour a glass of water on the evaporator. Connecting area drain hose 2. - Page 22 Checking the Drainage, Forming the Pipings and Long Pipe Setting Forming the piping Form the piping by wrapping the connecting portion of the indoor Seal a small unit with insulation material and Taping opening around the pipings with secure it with two kinds of vinyl Drain hose gum type sealer.
- Page 23 Checking the Drainage, Forming the Pipings and Long Pipe Setting Current limit switch setting and long pipe setting h The function referred below is differently applied to model. - Set the dip switch to a long pipe mode when the length of total pipes is over standard pipe of each model.
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Page 24: Air Purging And Evacuation
Air Purging and Evacuation Air Purging and Evacuation Air and moisture remaining in the refrigerant system have undesirable effects as indicated below. 1. Pressure in the system rises. 2. Operating current rises. 3. Cooling(or heating) efficiency drops. 4. Moisture in the refrigerant circuit may freeze and block capillary tubing. 5. - Page 25 Air Purging and Evacuation Evacuation 1. Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit. Indoor unit Confirm the "Lo" knob of the manifold valve is open. Then, run the vacuum pump. The operation time for evacuation varies with tubing length and capacity of the pump.
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Page 26: Installation Pi485
Installation PI485 Installation PI485 • Fix the PI485 PCB as shown in Fig. Detailed installation method refer to PI485 Installation Manual. 18kBtu/h 26kBtu/h 30kBtu/h 26 Multi Air Conditioner... - Page 27 Installation PI485 40kBtu/h 48kBtu/h 56kBtu/h Installation Manual 27...
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Page 28: Test Running
Test Running Test Running 1. Check that all tubing and wiring have been properly connected. 2. Check that the gas and liquid side service valves are fully open. Prepare remote control Remove the battery cover by pulling it according to the arrow direction. Insert new batteries making sure that the (+) and (–) of battery are installed correctly. -
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 Multi Air Conditioner...