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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 : CASSETTE
P/NO : MFL67339903
www.lg.com
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Table of Contents
Related Manuals for LG LT-H548DLE1
Summary of Contents for LG LT-H548DLE1
- 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 : CASSETTE www.lg.com P/NO : MFL67339903...
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Page 2: Table Of Contents
Cassette Type Air Conditioner Installation Manual TABLE OF CONTENTS Installation Required Parts Required Tools Requirements o Connecting cable o Horizontal meter Safety Precautions......3 o Pipes: Gas side o Screw driver Liquid side o Electric drill Introduction........6 o Hanging Bolt o Hole core drill (ø70mm) Symbols used in this Manual..6 (W 3/8 or M10 length 650mm) o Flaring Tools set... -
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. n 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 n Operation Do not let the air conditioner run for a long Take care to ensure that power Do not place anything on the time when the humidity is very high and a cable could not be pulled out or power cable.
- Page 5 Safety Precautions n Installation Always check for gas (refrigerant) Install the drain hose to Keep level even when leakage after installation or repair ensure that water is drained installing the product. of product. away properly. • Low refrigerant levels may cause •...
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Page 6: 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. This symbol indicates special notes. NOTICE Features Heat Pump Model Anti-bacteria Anti-bacteria Anti-bacteria... -
Page 7: Installation
Installation Installation Installation Tools Figure Name Figure Name Screw driver Ohmmeter Electric drill Hexagonal wrench Measuring tape, Knife Ammeter Hole core drill Gas-leak detector Thermometer, Spanner Horizontal meter Torque wrench Flaring tool set Installation Manual 7... -
Page 8: Installation Of Indoor, Outdoor Unit
Installation Installation of Indoor, Outdoor Unit Selection of the best location 1) Indoor unit • There should not be any heat source or steam near the unit. Ceiling Ceiling Board • There should not be any obstacles to prevent Ceiling Board the air circulation. - Page 9 *Additional Pipe Size Length A(m) Elevation B(m) Model refrigerant (g/m) Liquid Standard Max. Standard Max. LT-H548DLE1 LT-H548DLF1 3/4" 3/8" LT-C548DLE2 Outdoor unit Indoor unit Outdoor unit Oil trap Outdoor unit Indoor unit Indoor unit If piping length is more than 5m CAUTION: •...
- Page 10 Installation Ceiling opening dimensions and hanging bolt location • The dimensions of the paper model for installing are the same as those of the ceiling opening dimensions. Indoor Unit:mm • Select and mark the position for fixing bolts Ceiling and piping hole. •...
- Page 11 Installation The Indoor Unit Installation Ceiling Keep the length of the bolt Hanging bolt from the bracket to 40mm (W3/8 or M10) Flat washer for M10 Air Conditioner body (W3/8 or M10) (accessory) Ceiling board Ceiling board Spring washer (M10) Flat washer for M10 (accessory) Paper model...
- Page 12 Installation WIRED REMOTE CONTROL INSTALLATION (PQRCUSA0) 1. Disassemble the remote controller from the installation board. • Use the driver as shown in the right picture and insert it into the hole with the arrow. And then you pull the driver in the front direction, the remote controller will be separated.
- Page 13 Installation 5. Use the connecting cable to connect the indoor unit and the 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 14 Installation Wiring Connection • Open the control box cover and connect the Remote controller cord and Indoor power wires. Indoor Outdoor Connecting wire Fire Prevention Cover Cord Clip Remote Control Cord Connector fitting cover Fire Prevention cover bolt 3Phase Terminal Block of Outdoor Unit Terminal Block of Indoor Unit 1(L) 2(N) 1(L) 2(N)
- Page 15 Installation ELECTRICAL WIRING 1. All wiring must comply with LOCAL REGULATIONS. 2. Select a power source that is capable of supplying the current required by the air conditioner. 3. Feed the power source to the unit via a distribution switch board designed for this purpose. 4.
- Page 16 Installation Connecting Pipes to the Indoor Unit • Preparation of Piping Main cause of gas leakage is defect in flaring Copper Slanted Uneven Rough tube 90° work. Carry out correct flaring work in the following procedure. 1) Cut the pipes and the cable. •...
- Page 17 Installation Piping Connection 1. Form the piping according to its routing. Avoid bending and Liquid side bending back the same piping point more than three times. (This will result in hardening the pipe.) Indoor 2. After deforming the piping, align centers of the union fitting of unit the indoor unit and the piping, and tighten them firmly with Outdoor...
- Page 18 Installation Installation of Decorative Panel The decorative panel has its installation Before installing the decorative panel, direction. always remove the paper template. 1. Temporarily fix two decorative panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount 10mm in length.) The fixing screws (hexagon M5 screw) are included the indoor unit box.
- Page 19 Installation 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 Indoor Unit Drain Piping Upward...
- Page 20 Installation HEAT INSULATION 1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C). Fastening band (accessory) 2. Precautions in high humidity circumstance: This air conditioner has been tested according to the "KS Standard Conditions with Mist"...
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Page 21: Test Running
Installation In case of the Outdoor Unit being installed above position of the Indoor Seal a small opening Unit. around the pipings with gum type sealer. 2. Tape the Pipings and Connecting cable from bottom to top. Trap 3. Form the pipings gathered by taping along the exterior wall, and make the trap prevent water from entering into the room. - Page 22 Installation 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 15 minutes or more. 3) Evaluation of the performance 1. Measure the temperature of the intake and discharge air.
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Page 23: Optional Operation
Installation Installer Setting -PQRCUSA0 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. This must be set by an certificated installer, and any installation or change that is carried out by a non-certificated person should be responsible for the results. - Page 24 Installation Test Run mode After installing the product, you must run a Test Run mode. For details related to this operation, refer to the product manual. 1. Keep pressing button setting for 4 secs to enter installer setting mode until code displayed in timer segment 01:01 Function Code...
- Page 25 Installation Address Setup of Central Control 1. Press the button for 4 seconds to enter the installer setting mode until timer segment display “01:01”. 2. Repeat pressing button to select Function code 02 02:00 Indoor No. Function Code Group No 3.
- Page 26 Installation Thermistor 1. Press the button for 4 seconds to enter the installer setting mode until timer segment display “01:01”. 2. Repeat pressing button to select Function code 04 04:01 Function Code Thermistor setting 3. Set Thermistor mode by pressing button (01: Remote Controller, 02: Indoor, 03: 2TH)
- Page 27 Installation Ceiling Height Selection This function is to adjust FAN Airflow rate according to ceilingheight (only cassette model) 1. Press the button for 4 seconds to enter the installer setting mode until timer segment display “01:01”. 2. Repeat pressing button to select Function code 05 05:01 Function Code...
- Page 28 Installation Group Setting(Remote Controller) This function is only for group control operation. Please donʼt set this function in case of non-group control 1. Press the button for 4 seconds to enter the installer setting mode until timer segment display "01:01". 2.
- Page 29 Installation Dry contact mode setting This function allows the Dry contact-indoor unit operate under Auto Run mode or Manual mode with remote controller. 1. Press the button for 4 seconds to enter the installer setting mode until timer segment display “01:01”. 2.
- Page 30 Installation Option Function Setting For the option product such as air purify/dehumidifier/ heater and ventilation, elevation grill. It is possible to set the items are installed or not 1. Press the button for 4 seconds to enter the installer setting mode until timer segment display “01:01”.
- Page 31 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...