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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.
Floor Standing
Concealed Floor Standing
P/NO : MFL42803120
Copyright © 2010 - 2018 LG Electronics Inc. All Rights Reserved.
http://www.lghvac.com
www.lg.com
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Table of Contents
Related Manuals for LG CEU Series
Summary of Contents for LG CEU Series
- Page 1 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. Floor Standing Concealed Floor Standing http://www.lghvac.com www.lg.com P/NO : MFL42803120 Copyright © 2010 - 2018 LG Electronics Inc. All Rights Reserved.
- 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
Floor Standing Concealed Floor Standing Type Indoor Unit Installation Manual TABLE OF CONTENTS Installation Requirements Required Parts Required Tools Safety Precautions....4 Introduction......7 o Level gauge Installation o Four type "A" screws o Screw driver o Connecting cable o Electric drill o Hole core drill Selection the best location ..8 o Pipes: Gas side... -
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 Be sure to read before installing the air conditioner. n Be sure to observe the cautions specified here as they include important items related to safety. n Incorrect operation due to ignoring instruction will cause harm or damage. - Page 5 Safety Precautions • Do not modify or extend the power cable. - There is risk of fire or electric shock. • Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open.
- Page 6 Safety Precautions Installation • Always check for gas (refrigerant) leakage after installation or repair of product. - Low refrigerant levels may cause failure of product. • Install the drain hose to ensure that water is drained away properly. - A bad connection may cause water leakage. •...
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Page 7: 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 could cause harm to the air conditioner. NOTICE This symbol indicates special notes. Features [CEA/CFA Type] Control panel Air Outlet Wired Remote... -
Page 8: Installation
Installation Installation Selection of the best location Indoor unit Install the air conditioner in the location that satisfies the fol- lowing conditions. • The place shall easily bear a load exceeding four times the indoor unit’s weight. Window • Sufficient space should be available to inspect the unit as in the figure shown on the right. - Page 9 Installation Bolt pitch • Positioning of holes for fastening to the wall Unit:mm(inch) Type CEA, CEU 858(33-3/4) CFA, CFU 1136(44-3/4) 1. Use the installationmount for installation. Check whether the wall is strong enough to bear the weight of the unit or not. if there is a risk, reinforce the wall before installing the unit.
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Page 10: Preparation Of Piping
Installation Preparation of Piping Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure. 1. Cut the pipes and the cable. n Use the accessory piping kit or the pipes purchased Copper Slanted Uneven Rough tube... - Page 11 Installation CAUTION • Always use a charge hose for service port connection. • After tightening the cap, check that no refrigerant leaks are present. Union • When loosening a flare nut, always use two wrenches in combination, When connecting the piping, always use a spanner and torque wrench in combination to tighten the flare nut.
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Page 12: Plumbing Materials And Storage Methods
Installation Plumbing materials and storage methods Pipe must be able to obtain the specified thickness and should be used with low impurities. Also when handling storage, pipe must be careful to prevent a fracture, deformity and wound. Should not be mixed with contaminations such as dust, moisture. Refrigerant piping on three principles Drying Cleanliness... - Page 13 Installation Nitrogen substitution method Welding, as when heating without nitrogen substitution a large amount of the oxide film is formed on the internal piping. The oxide film is a caused by clogging EEV, Capillary, oil hole of accumulator and suction hole of oil pump in compressor. It prevents normal operation of the compressor.
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Page 14: Drain Piping Work
Installation HEAT INSULATION 1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C). 2. Precautions in high humidity circumstance: Fastening band This air conditioner has been tested according to the "ISO (accessory) Conditions with Mist" and confirmed that there is not any default. -
Page 15: How To Connect Wirings
Installation How to connect wirings Remove the electric parts Box cover and connect the wiring Power Supply wiring ground wiring (Field wiring) Transmission wiring (Field wiring) Wiring Connection Connect the wires to the terminals on the control board individually according to the outdoor unit connection. •... - Page 16 Installation CAUTION: After the confirmation of the above conditions, prepare the wiring as follows: 1) Never fail to have an individual power circuit specifically for the air conditioner. As for the method of wiring, be guided by the circuit diagram posted on the inside of control cover. 2) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation.
- Page 17 Installation CAUTION : The connecting cable connected to the indoor and outdoor unit should be complied with the fol- lowing specifications (This equipment shall be provided with a cord set complying with the national regulation). 10±3mm AWG18 If the supply cord is damaged, it must be replaced by a special cord or assembly available from the manufacturer of its service agent.
- Page 18 Installation WIERED 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. Install the remote controller about 5ft(1.5m) above the floor in an area with good air circulation at an average tempera- ture.
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Page 19: Dip Switch Setting
Installation Dip Switch Setting Function Description Setting Off Setting On Default Communication N/A (Default) Cycle N/A (Default) Group Control Selection of Master or Slave Master Slave Dry Contact Mode Selection of Dry Contact Wired/Wireless remote Mode controller Auto Selection of Manual or Auto operation Mode Installation Fan continuous operation... -
Page 20: Group Control Setting
Installation Group Control Setting 1. Group Control 1 Wired remote controller 1 + Standard Indoor Units LGAP Network System Slave Master Slave Signal Slave 12 V Display Error Message Only connect serial signal and GND lines between slave indoor unit Master Dip Switch in PCB (Cassette and Duct Type indoor units) - No. - Page 21 Installation 5. In case of any error occurs at indoor unit, display on the wired remote controller. Exception of the error indoor unit, an individual indoor unit control possibility. 6. In case of Group Control, it is possible to use following functions. - Selection of operation options (operation/stop/mode/set temperature) - Control of flow rate (High/Middle/Low) - It is not possible at some functions.
- Page 22 Installation 3. Group Control 3 Mixture connection with indoor units and Fresh Air Intake Unit LGAP Network System Signal Master Slave Master Slave 12 V Display Error Message Master Master In case of connecting with standard indoor unit and Fresh Intake Unit, separate Fresh Air Intake Unit with standard units.
- Page 23 Installation 4. 2 Remote Control Wired remote controller 2 + Indoor unit 1 LGAP Network System Master Display Error Message Master Slave 1. It is possible to connect two wired remote controllers with one indoor unit. 2. Every types of indoor unit is possible to connect two remote controller. 3.
- Page 24 Indoor Unit...
- Page 25 Please call the installing contractor of your product, as warranty service will be provided by them. Service call Number # : (888) LG Canada, (888) 542-2623 CANADA Numéro pour les appels de service : LG Canada, 1-888-542-2623...