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LG
Multi Air Conditioner
INSTALLATION MANUAL
website http://www.lgservice.com
IMPORTANT
• Please read this instruction manual completely before
installing the product.
• When the power cord is damaged, replacement should 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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Table of Contents
Related Manuals for LG Multi F242CX
Summary of Contents for LG Multi F242CX
- Page 1 website http://www.lgservice.com Multi Air Conditioner INSTALLATION MANUAL IMPORTANT • Please read this instruction manual completely before installing the product. • When the power cord is damaged, replacement should 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
Multi Air Conditioner Installation Manual TABLE OF CONTENTS Installation Required Parts Required Tools Requirements Safety Precautions......3 Introduction ........8 Symbols used in this manual..8 Features ...........8 Installation ..........9 ❏ Connecting cable ❏ Level gauge Selection of the best location..9 ❏ Screw driver ❏... -
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 Do not modify or extend the Do not install, remove, or re- Be cautious when unpacking power cable. install the unit by yourself and installing the product. (customer). • There is risk of fire or electric • There is risk of fire, electric •...
- Page 5 Safety Precautions Do not allow water to run into Do not store or use flammable gas Do not use the product in a electric parts. or combustibles near the product. tightly closed space for a long time. • It may cause There is risk of •...
- Page 6 Safety Precautions When the product is not be used for a long time, Take care to ensure that nobody could step on disconnect the power supply plug or turn off the or fall onto the outdoor unit. breaker. • There is risk of product damage or failure, or •...
- Page 7 Safety Precautions Do not block the inlet or outlet Use a soft cloth to clean. Do Do not touch the metal parts of the of air flow. not use harsh detergents, product when removing the air solvents, etc. filter. They are very sharp! •...
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Page 8: 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. NOTICE This symbol indicates special notes. Features Air filters Air outlet vents Air intake vents Remote Controller... -
Page 9: Installation
Installation Installation Selection of the best location • The place shall easily bear a load exceeding Inspection hole four times the indoor unit’s weight. Top view (600X600) • The place shall be able to inspect the unit as (unit: mm) Control box the figure. -
Page 10: Drill A Hole In The Wall
Installation Drill a Hole in the Wall • Drill the piping hole with a ø70mm hole core WALL drill. Drill the piping hole at either the right or Indoor Outdoor the left with the hole slightly slanted to the outdoor side. Flaring Work Main cause for gas leakage is due to defect in flaring work. - Page 11 Installation Flaring work 1. Firmly hold copper pipe in a bar in the dimension shown in the table below. 2. Carry out flaring work with the flaring tool. Handle Outside diameter Yoke inch Cone Ø6.35 1.1~1.3 Ø9.52 1.5~1.7 Copper pipe Ø12.7 1.6~1.8 Ø15.88...
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Page 12: The Indoor Unit Installation
Installation The Indoor Unit Installation CASE 1 POSITION OF SUSPENSION BOLT • Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. • Apply a filter Accessory at air return hole. (Unit:mm) Dimension F (G) H Capacity 12k/18k/24k 932 880 355 45.5 450 30 87 750 163 260 Btu/h... - Page 13 Installation • Select and mark the position for fixing bolts. • Drill the hole for set anchor on the face of ceiling. • Insert the set anchor and washer onto Old building New building the suspension bolts for locking the suspension bolts on the ceiling.
- Page 14 Installation CAUTION 1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner. 2. Minimum thickness of the insulation for the connecting pipe shall be 5mm. Front of view • The unit must be horizontal or declined to the drain hose connected when finished installation.
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Page 15: Checking The Drainage
Installation INSULATION, OTHERS Insulate the joint and tubes completely. THERMAL INSULATION All thermal insulation must comply with local requirement. INDOOR UNIT Union for liquid pipe Thermal insulator for refrigerant pipe (Local supply) Thermal insulator for Refrigerant pipe and thermal piping(Local supply) insulator(Local supply) Hose clip for thermal insulator (Local supply) -
Page 16: Wired Remote Controller Installation
Installation Wired Remote Controller Installation DISASSEMBLING • Separate the under plate from Remote control box. Front case Lever carefully Remote control • Fix the cord clamps on the wall by the box open box body ø 3 tapping screws (accessory). using a screw driver, etc. - Page 17 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 temperature.
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Page 18: Connecting The Cables
Installation Connecting the Cables Indoor 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. (Ensure that the color of the wires of the outdoor unit and the terminal No. are the same as those of the indoor unit.) •... - Page 19 Installation Outdoor 1. Remove the control cover from the unit by Outdoor Unit loosening the screw. Connect the wires to the terminals on the Terminal block control board individually. 2. Secure the cable onto the control board with Over 5mm the cord clamp.
- Page 20 Installation Connection of the cable 1. Remove the cover control from the unit by loosening the screw. Connect the wires to the terminals on the control board individually as the following. F242CX/F242HX,F362CX Terminal on the OUTDOOR UNIT 1(L) 2(N) 1(L) 2(N) 3(A) 3(B) 1(L) 2(N) 1(L) 2(N)
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Page 21: Optional Operation
Installation Optional Operation 1. Two Thermistor System (1) Open the rear cover of the wired remote-controller to set the mode. (2) Select one of three selectable modes as follows. • Position 1: The room temperature is controlled by the thermistor of the main body. •... - Page 22 Installation 2. E.S.P.(External Static Pressure) Setting (1) Open the rear cover of the wired remote-controller to set the mode. (2) Select one of three selectable modes as follows. I Without Zone System 1. Position V-H, F-H: • This position sets the maximum E.S.P as a default set. 2.
- Page 23 Installation 3. How to Set E.S.P? Procedure of RPM change: Ex) External Static pressure is 4mmAq for 24k. • To protect the unit, compressor is designed to be off during E.S.P. setting. Push the "On/Off" button. The unit will start. AUTO SWING OPERATION SET TEMP...
- Page 24 Installation [Table. 1] Static Pressure(mmAq) Model Name Step(Hi/Med/Lo) Setting Value 12.5 CMM 10 CMM 8.5 CMM 16.5 CMM 14.5 CMM 13 CMM 18 CMM 16.5 CMM 14 CMM : 1. Be sure to set the value refering table 1. Unexpected set value will cause NOTICE mal-function.
- Page 25 P/No.: MFL35865802...