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LG LA091CNP Installation Manual
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LG LA091CNP Installation Manual

LG LA091CNP Installation Manual

Lg la091cnp: instruction manual
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LG Room

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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Summary of Contents for LG LA091CNP

  • Page 1: Air Conditioner

    LG Room 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.

  • Page 2: Table Of Contents

    Room Air Conditioner Installation Manual TABLE OF CONTENTS Installation Requirements Safety Precautions...3 Introduction ...9 Symbols used in this manual...9 Features ...9 Installation ...10 Installation parts ...10 Installation tools ...10 Installation map...11 Confirm The Refrigerant ...12 Selecting the best location ...13 Piping length and elevation...14...

  • Page 3: Installation

    To prevent the injury of 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 4 Authorized Service Center. • There is risk of fire, electric shock, explosion, or injury. 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 5 • Oxygen deficiency could occur. Stop operation and close the window in storm or hurricane. If possible, remove the air conditioner from the window before the hurricane arrives. • There is risk of property damage, failure of product, or electric shock.
  • Page 6 (refrigerant) leakage after installation or repair of product. • Low refrigerant levels may cause failure of product. 6 Room Air Conditioner When the product is soaked (flooded or submerged), contact an Authorized Service Center. • There is risk of fire or eletric shock.
  • Page 7 Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. • It may cause a problem for your neighbors. Operation Do not direct airflow at room occupants. (Don't sit in the draft.) •...
  • Page 8 Use a firm stool or ladder when cleaning or maintaining the air conditioner. • Be careful and avoid personal injury. Disuse Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.

  • Page 9: 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 Signal Receptor Front Panel...

  • Page 10: Installation Guide Map

    Installation Installation Read carefully, and then follow step by step. Installation Parts Installation guide map Type "B" screw Installation Tools Figure 10 Room Air Conditioner Name Screw driver Electric drill Measuring tape, Knife Hole core drill Spanner Torque wrench Type "A" screw and plastic anchor...

  • Page 11: Installation Map

    Installation Map Installation parts you should purchase. NOTICE More than 19.6"(50cm) (Left and right are identical) More than More than More than 11.8"(30cm) 11.8"(30cm) 11.8"(30cm) More than 28"(70cm) More than More than More than 3.9"(10cm) 3.9"(10cm) 7.9"(20cm) Sleeve Bushing-Sleeve Putty(Gum Type Sealer) Bend the pipe as close as possible on the wall but be careful so that it may not break.

  • Page 12: Confirm The Refrigerant

    R-22 -40.8 Do not handle the pipe by yourself (customer) High-pressure refrigerant may cause personal injury. - manifold gauge ,charging and any piping tools must be dedicated to R-410A systems. 12 Room Air Conditioner 100% Vapor pressure(25°C)(kg f/cnf) 15.9 Vapor density(25°C)(kg/m...

  • Page 13: Selecting The Best Location

    3. Do not place animals and plants in the path of the warm air. 4. Take the weight of the air conditioner into account and select a place where noise and vibration are minimum. 5. Select a place where the warm air and noise from the air conditioner do not disturb neighbors.

  • Page 14: Piping Length And Elevation

    Ø12.7mm(1/2") Ø6.35mm(1/4") Indoor unit Outdoor unit CAUTION: Capacity is based on standard length and maximum allowance length is on the basis of reliability. Oil trap should be installed every 16.4~23feets (5~7 meters). 14 Room Air Conditioner Standard Length Evap m(ft) 7.5(25)

  • Page 15: Preparing Work For Installation

    Preparing Work for Installation Open panel front 1. Pull the upper part of the front panel. 2. Lift up the panel. 3. To detach the front panel, remove the two screws at the lower part. 4. Detach the front panel from the body. 5.

  • Page 16: Fixing Installation Plate

    Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side. 16 Room Air Conditioner 2. Look at suited horizon by horizontal meter on the horizontal setting line, and fix lightly the map by adhesive tape.

  • Page 17: Flaring Work

    Flaring Work Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. Cutting the pipes and the cable. 1. Use the piping kit accessory or the pipes purchased locally. 2.

  • Page 18: Connecting The Piping

    CAUTION: If the drain hose is routed inside the room, insulate the hose with an insulation material* so that dripping from "sweating"(condensation) will not damage furniture or floors. *Foamed polyethylene or equivalent is recommended. 18 Room Air Conditioner Smooth all round Inside is shiny without scratches = Improper flaring =...
  • Page 19 Connecting the piping with the indoor unit and drain hose with drain pipe 1. Align the center of the pipings and sufficiently tighten the flare nut by hand. 2. Tighten the flare nut with a wrench. Outside diameter inch Ø6.35 Ø9.52 Ø12.7 3.
  • Page 20 For right piping. Follow the instruction below. Good case • Press on the upper side of clamp and unfold the tubing to downward slowly. Bad case • Following bending type from left to right may cause damage to the turbing. 20 Room Air Conditioner...

  • Page 21: Connection Of Piping -Outdoor

    Connecting the Piping Connection Of Piping -Outdoor Put a couple drops of refrigerant oil on the face of the flare before assembling taking care not to add any contaminants. Align the center of the pipings and sufficiently tighten the flare nut by hand. Finally, tighten the flare nut with torque wrench until the wrench clicks.

  • Page 22: Connecting The Cables

    Power Supply AWG(MIN) Power Model source 9k/12k 1Ø, 115V 22 Room Air Conditioner Wiring Diagram Indoor Unit Terminal (4P) L1 is neutral for 115V models. NOTICE 2. Separately wire the high and low voltage line. 3. Use heat-proof electrical wiring capable of withstanding temperatures up to 167°F(75°C).
  • Page 23 Connection method of the connecting cable(Example) 1. Dismount two-caps on the conduit panel. 2. Make a hole appropriate for the passage of connection cable through on cap by tool. (for low voltage line) 3. Pass the connecting cable through the hole. 4.
  • Page 24 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.

  • Page 25: Checking The Drainage

    Checking the Drainage To check the drainage. 1. Pour a glass of water on the evaporator. 2. Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit. Drain piping 1.

  • Page 26: Forming The Piping

    2. Secure the taped piping along the exterior wall. Form a trap to prevent water entering the room. 3. Fix the piping onto the wall by saddle or equivalent. 26 Room Air Conditioner Seal small openings around pipings with a gum type sealer. Taping...

  • Page 27: Air Purging

    Air Purging Air purging The air and moisture remaining in the refrigerant system have undesirable effects as indicated below. 1. Pressure in the system rises. 2. Operating current rises. 3. Cooling(or heating) efficiency drops. 4. Moisture in the refrigerant circuit may freeze and block capillary tubing. 5.

  • Page 28: Finishing The Job

    5. Replace the valve caps at both gas and liquid side service valves and fasten them tight. This completes air purging with a vacuum pump. The air conditioner is now ready to test run. 28 Room Air Conditioner 2-way valve...

  • Page 29: Charging

    Charging Each outdoor unit is factory charged (nameplate charge) for the evaporator as well as a 7.5m(25ft) line set. Any time a line set is used either shorter or longer then the nominal 7.5m(25ft) line set length the refrigerant charge has to be adjusted. Whether the line set is made shorter or longer you must adjust the charge based on how many ft of tubing are either added or removed based on 20g(0.22oz) of R-410A per meter(foot).

  • Page 30: Panel Front Assembly

    2. Assemble connecting lead wire with controller, fix the upper part of panel front, and match the lower part of panel front. 3. Screw up panel front, and suspend the hook of panel front in the groove. 30 Room Air Conditioner Panel Front Connector...

  • Page 31: Test Running

    3. Ensure the difference between the intake temperature and the discharge is more than 46.4°F(8°C) 4. For reference; the gas side pressure of optimum condition is as below.(Cooling) The air conditioner is now ready for use. Bolt Tubing connection Intake temperature Discharge air...
  • Page 32 5. When the low-pressure gauge reading becomes 1 to 0.5kg/cm the gas side valve and then quickly turn off the unit. Now Pump Down procedure is completed, and all refrigerant is collected into the outdoor unit. 32 Room Air Conditioner G(14.2 to 7.1 P.S.I.G.), fully close...
  • Page 33 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 Sea wind •...
  • Page 34 Memo 34 Room Air Conditioner...
  • Page 35 P/No.: 3828A22231B...

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