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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: Vertical Air Handling Unit
P/NO : MFL65003102
www.lg.com
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Table of Contents
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Summary of Contents for LG MFL65003102
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Page 1: Installation Manual
• 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: Vertical Air Handling Unit www.lg.com P/NO : MFL65003102... - Page 2 2 Vertical Air Handling Unit...
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Page 3: Table Of Contents
Vertical Air Handling Unit Installation Manual TABLE OF CONTENTS Installation Requirements Required Parts Required Tools Features ........4 Accessories ......4 Duct Connection Dimensions ..5 Safety Precautions....6 Installation ........8 Selection of the best location...8 Upflow Installation ....9 ❏ Level gauge Duct work........10 ❏... -
Page 4: Features
Feature Features Wiring knockouts for conduit Wiring knockouts for conduit Refrigerant connections Drain connections for horizontal application Filter access Drain connections for upflow application Accessories Accessory Model Name PQRCVSL0 (Black Color) Wired remote controller PQRCVSL0QW (White Color) PQWRCDF0 (Heat pump) Wireless remote controller PQWRHDF0 (Cooling only) ANEH053B1... -
Page 5: Duct Connection Dimensions
Feature Duct Connection Dimensions <Top> Refrigerant Drain connections connections for upflow application Drain connections for horizontal application Air filter cover <Front> <Side-right> <Bottom> (Unit: inch(mm)) Wiring Dimensions Refrigerant Knock out Connections Capacity Pipe size (kBtu/h (RT)) Commu Height Width Depth Power Liquid nication... -
Page 6: Safety Precautions
Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. ■ Be sure to read before installing the air conditioner. ■ Be sure to observe the cautions specified here as they include important items related to safety. ■... - Page 7 Safety Precautions For installation, always con- Do not install the product on Be sure the installation area tact the dealer or an a defective installation stand. does not deteriorate with age. Authorized Service Center. • There is risk of fire, electric •...
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Page 8: Installation
Installation Installation Selection of the best location • Where optimum air distribution can be ensured. • Where nothing blocks air passage and install the duct work. • Where condensate can be properly drained. • Where the ceiling is strong enough to bear the indoor unit weight. •... -
Page 9: Upflow Installation
Installation Upflow Installation • Position unit for plenum installation. • The plenum should be secured in order to support the installation of adapter callers accommodate the installation of any duct work. • Seal all duct work according to local codes to prevent air leakage. Ensure that filter access is unob- structed. -
Page 10: Duct Work
Installation Duct work • Over 10 screws should be used for joining supply duct with the unit. • To prevent vibration transmission, exploit flexible connectors between duct and the unit. It is mandato- ry that the flexible connector between unit and duct at discharge connection should be made off heat resistive material when electric heater is installed. -
Page 11: Horizontal-Left Installation
Installation Horizontal-left Installation • It is particular that the units should not be installed in such a manner that the access panels facing up or down • It should be confirmed that the installation is in accordance with all relevant building codes that may necessitate installation of external condensate pan. -
Page 12: Connecting Pipes To The Indoor Unit
Installation Preparation of Piping Cut the pipes 1. Use the pipes purchased locally. 2. Measure the distance between the indoor and the outdoor unit. 3. Cut the pipes a little longer than measured distance. Copper pipe Slanted Uneven Rough 90° Burrs removal 1. - Page 13 Installation Cutting the Pipe for Cutting the Pipe for Cutting the Pipe for Cutting the Pipe for 3/8inch (9.52mm). 3/8inch (9.52mm). 3/8inch (9.52mm). 3/8inch (9.52mm). Cut the edge Cut the edge Cut the edge Liquid pipe Liquid pipe Liquid pipe Cutting Position is less Cutting Position is less Cutting Position is less...
- Page 14 Installation Always blow nitrogen into pipe which is brazed. Always use a non-oxidizing brazing materi- al for brazing the parts and do not use flux. If not, oxidized film can cause clogging or dam- age to the compressor unit and flux can harm the copper piping or refrigerant oil. Refrigerant piping Taping Pipe to be brazed...
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Page 15: Insulation
Installation Insulation Insulate the joint and tubes completely. Thermal insullaton : All thermal insulation must comply with local requirement. Union for liquid pipe Refrigerant pipe and thermal insulator (Local supply) Hose crip for thermal insulator (Local supply) Thermal insulator for refrigerant pipe(Local supply) Union for gas pipe Thermal insulator for refrigerant pipe... -
Page 16: Condensate Drain
Installation * Note 1) General location: When the pipe passes through indoors in which the indoor unit is operated - Apartment, classroom, office, mall, hospital, office-tel etc. Note 2) Special location 1. When the location is air conditioned but has severe temperature/humidity difference due to high ceiling - Church, auditorium, theater, lobby etc. - Page 17 Installation GRADIENT OF UNIT AND DRAIN PIPING • Alway lay the drain with downward inclination(1/50 to 1/100). Prevent any upward flow or reverse flow in any part. • 5/24 inch(5mm) or thicker formed thermal insulator shall always be provided for the drain pipe. Thermal insulator (Field supply) Drainage pipe...
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Page 18: Wiring Connection
Installation Wiring Connection 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. - Page 19 Installation Lock nut Conduit mounting plate 1/2inch(21.3 mm) Conduit power cable communication cable 2. Install conduit to the wiring knockouts. Connect power/communication cable to terminal block through the wiring knockouts. NOTE : 1. Separately wire power supply cord and connecting cable. 2.
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Page 20: Installation Of Wired Remote Controller
Installation Installation of Wired Remote Controller 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 21 Installation 4. Please connect indoor unit and remote controller using connection cable. Please check if connector is normally connected. Indoor Unit side Connecting cable 5. Please use extension cable if the distance between wired remote controller and indoor unit is more than 10m.
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Page 22: Name And Function Of Wired Remote Controller(Accessory).22
Installation Name and function of wired remote controller(Accessory) 1. Operation indication screen 2. Set temperature button 3. Fan speed button 4. on/off button 5. Opration mode selection button 6. Wireless remote controller receiver • Some products don't receive the wireless signals. 7. -
Page 23: Name And Function Of Wireless
Installation Name and function of wireless remote controller(Accessory) 1. Plasma button Not working. 2. Jet cool button Not working. 3. Operation mode selection button Used to select the operation mode. 4. Function setting button Used to set electric heater. 5. lcd luminosity button Not working. -
Page 24: Electric Heater
Installation Electric Heater Feature (Example: 5kW) Bracket Bi metal Heater Coil Terminal Block Relay Heater Cable * Note: Image shown above may vary depends on model capacity. Available heater in model Heater Capacity (kW) Capacity (kBtu/h (RT)) ○ 18(1.5) Not available Not available Not available ○... -
Page 25: Dip Switch Setting Of Indoor Unit Pcb
Installation Dip Switch Setting of Indoor unit PCB 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... -
Page 26: Group Control Setting
Installation Group Control Setting 1. Group Control 1 Wired remote controller 1 LGAP Network System Slave Slave Signal Slave 12 V Master 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 27: Group Control
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 28 Installation 3. 2 Remote Control Wired remote controller 2 + Indoor unit 1 LGAP Network System Slave Slave Slave Signal 12 V Master Display Error Message Master Slave 1. It is possible to connect two wired remote controllers with one indoor unit. 2.
- Page 29 Installation 4. Accessories for group control setting It is possible to set group control by using below accessories. Indoor unit 2 EA +Wired remote controller Indoor unit 1 EA +Wired remote controller 2EA ❈ PZCWRCG3 cable used for connection ❈ PZCWRC2 cable used for connection S lave Mas te r PZC WRC 2...
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Page 30: How To Set E.s.p
How to Set E.S.P? How to Set E.S.P? This is the function that decides the strength of the wind for each wind level and because this function is to make the installation easier. • If you set ESP incorrectly, the air conditioner may malfunction. •... - Page 31 How to Set E.S.P? Select ESP fan step again by using button and setup ESP value, as No. 4 and 5, that corresponds each wind flow Press button to save. Press button to exit. ❈ After setup, it automatically gets out of setup mode if there is no button input for 25 seconds.
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Page 32: Product Data
Product Data Product Data External Static Pressure & Air Flow Setting Value @ ESP(in.wc) Capacity Flow rate (kBtu/h(RT)) (CFM) High(1475) 54(4.5) Middle(1400) Low(1260) High(1400) 48(4.0) Middle(1260) Low(1000) High(1250) 42(3.5) Middle(1100) Low(1000) High(990) 36(3.0) Middle(880) Low(800) High(880) 30(2.5) Middle(800) Low(630) High(710) 24(2.0) Middle(640) Low(480) -
Page 33: Minimum Airflow By Heater Capacity
Product Data Minimum airflow by heater capacity (Unit : CFM) Heater Capacity (kW) Capacity (kBtu/h (RT)) 18(1.5) Not available Not available Not available 24(2.0) Not available Not available 30(2.5) Not available Not available 36(3.0) Not available Not available 42(3.5) 1000 1000 1000 1000... -
Page 34: Air Filter (Field Supply) Static Pressure Drop Factors
Product Data Air Filter (Field supply) Static pressure drop factors Capacity Flow Rate Static pressure (kBtu/h(RT)) (CFM) drop (in.WC) High(530) -0.02 18 (1.5) Middle(480) -0.02 Low(380) -0.01 High(710) -0.04 24 (2.0) Middle(640) -0.03 Low(480) -0.02 High(880) -0.05 30 (2.5) Middle(800) -0.05 Low(630) -0.03...
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