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LG
Air Conditioner
INSTALLATION MANUAL
website http://www.lgservice.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.
LG
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Table of Contents
Related Manuals for LG MFL40910614
Summary of Contents for LG MFL40910614
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Page 1: Installation Manual
website http://www.lgservice.com Air Conditioner INSTALLATION MANUAL 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 IMPORTANT! Please read this instruction sheet completely before installing the product. This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. WARNING •...
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Page 3: Table Of Contents
Air Conditioner Installation Manual CONTENTS Safety Precautions ....................4 Installation of Indoor, Outdoor Unit ..............7 The indoor unit installation ................9 Remote controller installation................12 Wiring Connection.....................15 Flaring Work and Connection of Piping ............19 Leakage test and Evacuation ................23 Installation of Decorative Panel ...............25 Indoor Unit Drain Piping ...................27 Test running .......................30 Installation Guide at the Seaside ..............33... -
Page 4: Safety Precautions
Safety Precautions Safety Precautions To prevent the injury of the user or other people and property damage, the following instructions must be followed. I Be sure to read before installing the air conditioner. I Be sure to observe the cautions specified here as they include important items related to safety. I Incorrect operation due to ignoring instruction will cause harm or damage. - Page 5 Safety Precautions Do not install the product at a place that there Use caution when unpacking and installing. is concern of falling down. • Otherwise, it may result in personal injury. • Sharp edges may cause injury. I Operation Do not share the outlet with Do not use the damaged Do not modify or extend the other appliances.
- Page 6 Safety Precautions I Installation Install the drain hose to ensure that drain Install the product so that the noise or hot can be securely done. wind from the outdoor unit may not cause any damage to the neighbors. • Otherwise, it may cause water leakage. •...
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Page 7: Installation Of Indoor, Outdoor Unit
Installation of Indoor, Outdoor Unit Installation of Indoor, Outdoor Unit Installation Places 1. Indoor unit Cassette type • There should not be any heat source or steam near the unit. Ceiling • There should not be any obstacles to prevent Ceiling Board Ceiling Board the air circulation. -
Page 8: Outdoor Unit
Installation of Indoor, Outdoor Unit 2. Outdoor unit • 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. More than • Ensure that the spaces indicated by arrows 300(11.8) around front, back and side of the unit. -
Page 9: The Indoor Unit Installation
The indoor unit installation The indoor unit installation 1. Cassette type Ceiling Ceiling board Level gauge TM/TN/TP Chassis 875(34-7/16) (Ceiling opening) CAUTION : 787(30-15/16) (Hanging bolt) bolt) • This air-conditioner uses a drain pump. • Install the unit horizontally using a level gauge. - Page 10 The indoor unit installation Ceiling Keep the length of the bolt Hanging bolt from the bracket to 40mm(1-1/2 inch) (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(5/8~3/4 inch) between the air conditioner bottom surface and the ceiling surface...
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Page 11: Floor Standing Type
The indoor unit installation 2. Floor Standing type 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. -
Page 12: Remote Controller Installation
Remote controller installation Remote controller installation Wired remote controller installation • 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. - Page 13 Remote controller installation Installation of Wired Remote Controller(Cassette type) 1. Connect the wired remote controller cable to the wired remote controller installation board as shown in the right picture. 12V SIG GND Red wire Yellow Black Yellow wire Remote Controller Black wire Cable ❊...
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Page 14: Wireless Remote Controller
Remote controller installation 5. Use the connecting cable to connect the indoor unit and the wired 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 15: Wiring Connection
Wiring Connection Wiring Connection Electrical Wiring Perform the electrical wiring work according to the electrical wiring connection. • All wiring must comply with local requirements. ELCB • Select a power source that is capable of Main supplying the current required by the air power source Switch box conditioner. - Page 16 2. Open the Control Box Cover (A) with Driver, ( ) as shown in Fig. 2. 3. Connect the Cables (LG doesn't supply) to the terminal Block of Indoor Unit, as shown in Fig. 3. 4. Install a power 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.
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Page 17: Connecting Cables Between Indoor Unit And Outdoor Unit
Wiring Connection Connecting Cables between Indoor Unit and Outdoor Unit • Connect the wires to the terminals on the control board individually according to the outdoor unit connection. • Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of indoor unit respectively (208~230V) Terminals on the... - Page 18 Wiring Connection 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.
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Page 19: Flaring Work And Connection Of Piping
Flaring Work and Connection of Piping Flaring Work and Connection of Piping Flaring work Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the Copper Slanted Uneven Rough following procedure. tube 90° 1) Cut the pipes and the cable. I Use the accessory piping kit or the pipes purchased locally. - Page 20 Flaring Work and Connection of Piping 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...
- Page 21 Flaring Work and Connection of Piping • For the units with capacity more than 12.5kW, the installation piping is connectable in four <Fig. 1> directions.(Fig. 1) Backward Sideways Forward Downward • When connecting in a downward direction, knock <Fig. 2> out the knockout hole of the base pan.
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Page 22: Forming The Piping
Seal a small opening around the pipings with Flaring Work and Connection of Piping gum type sealer. Forming the piping Plastic band Form the piping by wrapping the connecting portion of the indoor Seal a small Seal a small unit with insulation material and opening around opening around secure it with two kinds of vinyl... -
Page 23: Leakage Test And Evacuation
Leakage test and Evacuation Leakage test 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 24 Leakage test and Evacuation Evacuation 1. Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate Indoor unit the tubing and indoor unit. Confirm the "Lo and Hi" 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 25: Installation Of Decorative Panel
Installation to Decorative Panel 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. - Page 26 Installation to Decorative Panel 5. Fit the corner covers. 6. Open two screws of control panel cover. Screw 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 CN-VANE 1,2 CN-DISPLAY...
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Page 27: Indoor Unit Drain Piping
Indoor Unit Drain Piping Indoor Unit Drain Piping [Floor Standing Type] 1. The drain hose should point downward for optimum drainage. Downward slope 2. Incorrect Installation Examples: Accumulated Do not raise drain water Less than 50mm Tip of drain hose (1 31/32 inch) gap dipped in water Water... -
Page 28: Heat Insulation
Indoor Unit Drain Piping Drain test The air conditioner uses a drain pump to drain water. Use the following procedure to test the drain pump operation: • Connect the main drain pipe to the exterior and Flexible drain hose Feed water leave it provisionally until the test comes to an (accessory) end. - Page 29 Indoor Unit Drain Piping 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). 1/50~1/100 MAX 800mm 2. Keep the drain hose downward up to (32 1/2 inch) 1/50~1/100 inclination. Prevent any upward flow or reverse flow in any part.
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Page 30: Test Running
Test running Test running 1. PRECAUTIONS IN TEST RUNNING • The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner should not be operated. For test run, carry out the cooling operation firstly even during CAUTION heating season. -
Page 31: Cassette Type
Test running Installer Setting -Test Run Mode 1. Cassette type After installing the product, you must run a Test Run mode. For details related to this operation, refer to the product manual. Keep pressing button setting for 4 secs to enter installer setting mode until code displayed in timer segment. -
Page 32: Hand Over
Test running CAUTIO N: 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. As for the method of wiring, be guided by the circuit diagram pasted on the inside of control box cover. -
Page 33: 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 34 34 Air Conditioner...
- Page 35 Printed in Korea P/No.: MFL40910614 Oct.2008 specifications, designs and other content presented in this manual are current as of September 2007 but subject to change without notice.
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