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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 CEILING CASSETTE
P/NO : MFL63750405
www.lg.com
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Table of Contents
Related Manuals for LG NHXM40C1A0
Summary of Contents for LG NHXM40C1A0
- 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. TYPE : MULTI TYPE CEILING CASSETTE www.lg.com P/NO : MFL63750405...
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Page 2: Table Of Contents
Multi Type Air Conditioner Installation Manual TABLE OF CONTENTS OUT-LINE OF INSTALLATION Safety Precautions ..................3 Installation of Indoor ..................6 1) Selection of the best location .........6 2) Ceiling dimension and hanging bolt location..7 3) The Indoor Unit Installation ........8 4) Wired Remote Control Installation .......10 5) Group control ............12 6) Wiring Connection..........13... -
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. ■ 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 4 Safety Precautions Do not modify or extend the power cable. Be cautious when unpacking and installing the product. • There is risk of fire or electric shock. • Sharp edges could cause injury. Be especially careful of the case edges and the fins on the con- denser and evaporator.
- Page 5 Safety Precautions CAUTION ■ Installation Always check for gas (refrigerant) leakage after installa- Install the drain hose to ensure that water is tion or repair of product. drained away properly. • Low refrigerant levels may cause failure of • A bad connection may cause water leakage. product.
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Page 6: Installation Of Indoor
Installation of Indoo Installation of Indoor Selection of the best location 1. Indoor unit • There should not be any heat source or steam near the unit. • There should not be any obstacles to pre- Ceiling vent the air circulation. Ceiling Board Ceiling Board •... -
Page 7: Ceiling Dimension And Hanging Bolt Location
Installation of Indoor Ceiling dimension and hanging bolt location • The dimensions of the paper model for installation are the same as those of the ceiling opening dimensions. • Select and mark the position for fixing bolts and piping hole. •... -
Page 8: The Indoor Unit Installation
Installation of Indoor NOTICE • Thoroughly study the following installation locations: 1. In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the turbo fan, the fin of the heat exchanger and the drain pump, resulting in heat exchange reduction, spraying, dispersing of water drops, drain pump malfunction, etc. - Page 9 Installation of Indoor Ceiling Keep the length of the bolt Hanging bolt from the bracket to 40mm (W3/8 or M10) Flat washer for M10 (W3/8 or M10) Air Conditioner body (accessory) Ceiling board Ceiling board Spring washer (M10) Keep the length of *( )mm between the air conditioner bottom surface and the ceiling surface Flat washer for M10...
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Page 10: Wired Remote Control Installation
Installation of Indoor Wired Remote Controller Installation 1. Please fix tightly using provided screw after placing remote controller setup board on the place where you like to setup. - Please set it up not to bend because poor setup could take place if setup board bends. - Please set up remote controller board fit to the reclamation box if there is a reclamation box. - Page 11 Installation of Indoor 4. Please connect indoor unit and remote controller using connection cable. Please check if connector is normally connected. Signal Yellow Indoor Black Unit side Connecting cable 5. Please use extension cable if the distance between wired remote controller and indoor unit is more than 10m. CAUTION When installing the wired remote controller, do not bury it in the wall.
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Page 12: Group Control
Installation of Indoor Group control 1. When installing more than 2 units of air conditioner to one wired remote controller, please connect as the right figure. Signal wire • If it is not event communication indoor unit, set the unit as slave. •... -
Page 13: Wiring Connection
Installation of Indoor Wiring Connection • Open the control box cover and connect the Remote controller cord and Indoor power wires. Indoor power cord Control box cover Remote controller cord Screws Power cord Control box cover Remote control cord In-Out connecting wire [Air inlet side view] WARNING: Make sure that the screws of the terminal are free from looseness. -
Page 14: Installation Of Decoration Panel
Installation of Indoor Installation of Decoration Panel The decoration panel has its installa- Before installing the decoration panel, tion direction. always remove the paper template. 1. Temporarily fix two decoration panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount 10mm(3/8 inch) in length. - Page 15 Installation of Indoor Air conditioner unit Decorative panel fixing screws (hexagon M6 screws) Temporarily fitting at 2 poles (Tightening about 10mm) Piping side Control box cover Cover Plasma filter Key holes Louver motor Decorative panel fixing screws (Hexagon M6 screw) Decorative panel Push Ratch...
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Page 16: Indoor Unit Drain Piping
Installation of Indoor 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... -
Page 17: Test Running
Test running HEAT INSULATION 1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resis- tance (over 120°C). Fastening band (accessory) 2. Precautions in high humidity circum- stance: This air conditioner has been tested ac- cording to the "KS Standard Conditions with Mist"... - Page 18 Test running 2. Connection of power supply 1. Connect the power supply cord to the independent power supply. • Circuit breaker is required. 2. Operate the unit for fifteen minutes or more. 3. Evaluation of the performance 1. Measure the temperature of the in- take and discharge air.
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Page 19: Optional Operation
Optional Operation Optional Operation Installer Setting -How to enter installer setting mode CAUTION Installer setting mode is to set the detail function of the remote controller. If the installer setting mode is not set correctly, it can cause problems to the product, user injury or property damage. - Page 20 Optional Operation <Installer Setting Code Table> Function Code Value Test Run 01:Set Address Setting 00~FF : Address <ESP Step> <ESP Value> <Example> 01:VeryLow 0 ~ 255 02:Low E.S.P. Value 03:Med Function Code ESP step ESP value 04:High 05:Very High 01:Remo Thermistor 02:Indoor 03:2TH...
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Page 21: Installer Setting -Test Run Mode
Optional Operation Installer Setting -Test Run Mode After installing the product, you must run a Test Run mode. If pressing button long for 3 seconds, it enters into remote controller setter setup mode. - If pressing once shortly, it enters into user setup mode. -
Page 22: Installer Setting - Setting Address Of Central Control
Optional Operation Installer Setting - Setting Address of Central Control If pressing button long for 3 seconds, it enters into remote controller setter setup mode. - If pressing once shortly, it enters into user setup mode. Please press more than 3 seconds for sure. If entering into address setup mode by using button, it indicates as picture below. -
Page 23: Installer Setting -Thermistor
Optional Operation Installer Setting -Thermistor This is the function to select the temperature sensor to judge the room temperature. If pressing button long for 3 seconds, it enters into remote controller setter setup mode. - If pressing once shortly, it enters into user setup mode. -
Page 24: Installer Setting -Ceiling Height Selection
Optional Operation Installer Setting -Ceiling Height Selection This function is to adjust FAN Airflow rate according to ceiling height (For ceiling type product) If pressing button long for 3 seconds, it enters into remote controller setter setup mode. - If pressing once shortly, it enters into user setup mode. -
Page 25: Installer Setting-Group Setting
Optional Operation Installer Setting-Group Setting It is a function for settings in group control, or 2-remote controller control. Please donʼt set this function in case of non-group control. If pressing button long for 3 seconds, it enters into remote controller setter setup mode. - If pressing once shortly, it enters into user setup mode. -
Page 26: Installer Setting-Dry Contact Mode Setting
Optional Operation Installer Setting-Dry Contact Mode Setting Dry contact function is the function that is possible to use only when dry contact equipment is separately pur- chased/setup. If pressing button long for 3 seconds, it enters into remote controller setter setup mode. - If pressing once shortly, it enters into user setup mode. -
Page 27: Installer Setting-Celsius / Fahrenheit Switching
Optional Operation Installer Setting-Celsius / Fahrenheit Switching This function is used for switching the display between Celsius and Fahrenheit. (Optimized only for U.S.A) If pressing button long for 3 seconds, it enters into remote controller setter setup mode. - If pressing once shortly, it enters into user setup mode. -
Page 28: Installer Setting -Optional Function Setting
Optional Operation Installer Setting -Optional Function Setting Setting feature for indoor unit when air cleaning / heater / humidifier / Up/down grill / Ventilation KIT is newly in- stalled, or installed unit is removed. If pressing button long for 3 seconds, it enters into remote controller setter setup mode. -
Page 29: Dip Switch Setting
Dip Switch Setting Indoor PCB Indoor PCB Indoor PCB Function Description Setting Off Setting On Default Group Control Selection of Master or Slave Master Slave Wired/Wireless remote Selection of Dry Contact controller SW4 Dry Contact Mode Auto Mode Selection of Manual or Auto operation Mode Installation Manual 29...
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