1. Manuals
  2. Brands
  3. LG Manuals
  4. Air Conditioner
  5. LC098HV
  6. Installation manual

LG LC098HV Installation Manual

Single-zone four-way ceiling-cassette
Hide thumbs Also See for LC098HV:
Table of Contents

Advertisement

Quick Links

Download this manual
Single-Zone Four-Way
Ceiling-Cassette
Heat Pump Systems
3/4 to 3-1/2 Tons
LC098HV (9,000 Btu/h)
LC128HV (12,000 Btu/h)
LC188HV (18,000 Btu/h)
SINGLE-ZONE FOUR-WAY
CEILING-CASSETTE
INSTALLATION MANUAL
LC249HV (24,000 Btu/h)
LC369HV (36,000 Btu/h)
LC429HV (42,000 Btu/h)

Advertisement

Table of Contents
loading

Related Manuals for LG LC098HV

Summary of Contents for LG LC098HV

  • Page 1 SINGLE-ZONE FOUR-WAY CEILING-CASSETTE INSTALLATION MANUAL Single-Zone Four-Way Ceiling-Cassette Heat Pump Systems 3/4 to 3-1/2 Tons LC369HV (36,000 Btu/h) LC098HV (9,000 Btu/h) LC188HV (18,000 Btu/h) LC249HV (24,000 Btu/h) LC429HV (42,000 Btu/h) LC128HV (12,000 Btu/h)
  • Page 2 For continual product development, LG Electronics U.S.A., Inc., reserves the right to change specifications without notice. ©LG Electronics U.S.A., Inc. This document, as well as all reports, illustrations, data, information, and other materials are the property of LG Electronics U.S.A., Inc.

  • Page 3: Safety Instructions

    If cover panels are not installed securely, dust, water and animals will Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 4 Keep the unit upright and parallel during installation to avoid vibration or water leakage. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 5 Failure to carefully read and follow all instructions in this manual can result in equipment malfunction and property damage. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 6 The exterior of the units may deteriorate, change color, or may be dam- aged if harsh cleaning chemicals are used. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 7: Table Of Contents

    Checking for Leaks / Bundling............43 Insulation ..................44-45 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 8: General Data

    T = Thermostat Compatible LV = Extended Piping Generation: Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 9: Parts

    (PT-QAGW0 / PT-QCHW0 [2x2]; One (1) PT-AAGW0 or PT-AFGW0 [3x3]) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 10 All power wiring/communication cables from ODU to IDU are field supplied and are to be minimum 14 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 11 All power wiring/communication cables from ODU to IDU are field supplied and are to be minimum 14 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 12 All power wiring/communication cables from ODU to IDU are field supplied and are to be minimum 14 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 13 All power wiring/communication cables from ODU to IDU are field supplied and are to be minimum 14 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 14: Electrical

    FLA) rounded down to the nearest standard fuse size. RLA = Rated Load Amps. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 15: General Installation Guidelines

    8. Consider tie-down requirements in case of high winds or where required by local codes. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 16: Outdoor Unit Location Selection

    If the building does not include lightning protection, the outdoor unit will be damaged from a lightning strike. Inform the customer of this possibility in advance. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 17 Sea wind Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 18: Required Outdoor Unit Clearances

    Standard Case 4 Minimum Standard Case 5 Minimum Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 19 Obstacles above and on the air intake side. Obstacles above, on the air intake side, and on both left and right sides Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 20 Minimum 23-19/32" Minimum 39-3/8" Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 21: Rigging And Lifting / Outdoor Unit Mounting

    • Include an area for drainage around the foundation to ensure condensate thoroughly drains away from the outdoor unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 22: Outdoor Unit Mounting

    Concrete Beam Top of Unit Foundation Piping Connection Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 23: Indoor Unit Location Selection

    • Do not install the unit near a doorway. WARNING sion, and physical injury or death. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 24: Required Indoor Unit Clearances

    Also, add a ceiling grille for ventilation. Ventilation Grille Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 25: Hanging The Indoor Unit

    / wiring. There is a risk of electrical shock, fire, physical injury and / or death. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 26 Measure the unit at each corner to verify that it is level. 7. Remove the installation guide (template). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 27: Drilling The Piping Hole

    • See the Electrical Connections section of this manual for information on conduit / electrical wiring to the indoor unit. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 28: General Refrigerant Piping System Information

    To meet ASHRAE Standards 15 and 34, the smallest room volume on the system must be calculated and compared to the maximum allow- able concentration. Also consult state and local codes in regards to refrigerant safety. Device Connection Limitations Figure 22: Typical LC098HV and LC128HV System Layout. Unit = Feet A single-zone system consists of one outdoor unit and one indoor Max Length = A unit.

  • Page 29: Selecting Copper Piping

    Always follow local codes when selecting and installing copper pipe and piping system components. Approved piping for use with LG Single Zone products will be marked “R410 RATED” along the length of the pipe. Piping wall thickness must meet local code requirements and be approved for a maximum operating pressure of 551 psi. When bending piping, try to keep the number of bends to a minimum, and use the largest radii possible to reduce the equivalent length of installed piping;...

  • Page 30: Copper Expansion And Contraction

    COPPER EXPANSION AND CONTRACTION Copper Expansion and Contraction Under normal operating conditions, the vapor pipe temperature of 1. From the “Linear Thermal Expansion of Copper Tubing in Inches” a Duct Free System can vary as much as 280°F. With this large Table on the next page, find the row corresponding with the actual variance in pipe temperature, the designer must consider pipe length of the straight pipe segment.
  • Page 31 COPPER EXPANSION AND CONTRACTION Table 18: Linear Thermal Expansion of Copper Tubing in Inches. Fluid Temperature °F Pipe Length 35° 40° 45° 50° 55° 60° 65° 70° 75° 80° 85° 90° 95° 100° 105° 110° 115° 120° 125° 130° 0.04 0.04 0.05 0.06 0.06 0.07 0.08 0.08 0.09 0.09 0.10 0.10 0.11 0.11 0.11 0.12 0.13 0.14 0.15 0.15 0.08 0.08 0.10 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.22 0.23 0.26 0.28 0.29 0.30 0.12 0.12 0.15 0.18 0.20 0.21 0.23 0.24 0.26 0.27 0.29 0.30 0.32 0.33 0.32 0.35 0.39 0.42 0.44 0.45 0.16 0.16 0.20 0.24 0.26 0.28 0.30 0.32 0.34 0.36 0.38 0.40 0.42 0.44 0.43 0.46 0.52 0.56 0.58 0.60...

  • Page 32: Piping Materials And Handling

    PIPING HANDLING Piping Materials and Handling Keep Pipes Capped While Storing. Pipes used for the refrigerant piping system must include the specified thickness, and the interior must be clean. While handling and storing, do not bend or damage the pipes, and take care not to contaminate the interior with dust, moisture, etc.

  • Page 33: Refrigerant System Engineering

    Failure to do so will cause significant performance degradation. Proper leak checks must be performed. Using isolation valves does not automatically void any LG product warranty, however, a limited warranty will be voided in whole or part if any field supplied accessory fail in any way that causes product failure.
  • Page 34 REFRIGERANT SYSTEM ENGINEERING Obstacles Figure 26: Installing Piping Above and Below an Obstacle. When an obstacle, such as an I-beam or concrete T, is in the path of the planned refrigerant pipe run, it is best practice to route the MINIMUM pipe over the obstacle.
  • Page 35 Pipe Sleeves at Penetrations LG recommends that all pipe penetrations through walls, floors, and pipes buried underground be properly insulated and routed through an appropriate wall sleeve of sufficient size to prevent compression of refrigerant pipe insulation and free movement of the pipe within the sleeve.

  • Page 36: Flaring And Brazing Procedures

    FLARING AND BRAZING PROCEDURES Flaring and Brazing Procedures One of the main causes of refrigerant leaks is a defective connection. For LG HVAC systems, the installer needs to know how perform both flared and brazed connections successfully. • During installation, it is imperative to keep the piping system free of contaminants and debris such as copper burrs, slag, or carbon dust.
  • Page 37 FLARING AND BRAZING PROCEDURES Tightening the Flare Nuts Tightening Torque for Flare Nuts. Pipe Size (in. O.D.) Outside Diameter (mm) Tightening Torque (ft-lbs.) 13.0 - 18.0 6.35 9.52 24.6 - 30.4 12.7 39.8 - 47.7 15.88 45.4 - 59.3 71.5 - 87.5 19.05 1.

  • Page 38: Refrigerant Piping Connections

    Electrical System Installation section. Drainage from the Indoor Units Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 39: Outdoor Unit Connections

    Vapor Piping Torque Wrench Conduit Piping Cover Cable Clamp Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 40 • To prevent insects or small animals from entering and damaging interior components, plug gaps / access holes with field-supplied putty or insulation. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 41: Indoor Unit Connections

    Table 25: Included 18,000 Btu/h Cassette Connectors. Connectors (included only for single-zone system installations) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 42: Outdoor Unit Condensate Piping

    Position snugly against the indoor unit frame. NOTE vibration and / or leak. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 43: Checking For Leaks / Bundling

    Min. 14 Gauge Power/Communication Cable Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 44: Insulation

    Indoor Unit Refrigerant Piping Insulation (Field Supplied) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 45 3/8 inch thick EPDM insulation that is plenum-rated with a heat-resistance factor of more than 248°F. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 46: Electrical System Installation

    2. Using a ring terminal fastener or pliers, securely clamp a ring terminal to each stripped wire end. >1/4 inches Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 47 Do not include splices or wire nuts in the communication cable. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 48 Failure to properly provide a NEC approved earth ground can result in property damage and equipment malfunction. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 49 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 50: Controller Options

    SPEED CN-REMO TEMP OPER MODE Terminal Extension cable Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 51: Indoor Unit Electrical Connections

    For more information on conduits or the bundling method, see the Refrigerant Piping Connection section. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 52: Using A Conduit / Outdoor Unit Electrical Connections

    Terminal unit. Power Wiring Terminal Conduit Cable Clamp Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 53: Outdoor Unit Electrical Connections

    / control box cover (depends on model) to the outdoor unit with the screws. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 54: Final Installation Procedures

    Connected to Shrader Valve on Gas (Vapor) Service Port Outdoor Unit Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 55: Deep Evacuation Test

    (with core removed) using a vacuum hose. Open the gauge manifold and the vacuum pump Gauge valves. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 56 • Use a quality micron gauge in good operating order and install as far away from pump as possible. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 57: Triple Evacuation Test

    13. Shut the valves before turning off and disconnecting the vacuum pump. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 58: Refrigerant Trim Charge

    • Additional Refrigerant Charge Calculation : X (g) = [ (Refrigerant Pipe Length) - (No Charge Pipe Length) ] × (Additional Refrigerant). • Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 59: Installing Batteries, Test Run

    4. Install the batteries into the handheld remote controller (see above). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 60: Performance Evaluation

    Gas (Vapor) Service Temperature Valve Pressure 95°F 120~135 psig Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 61: Installing The Panel

    Install the panel snugly and without gaps. Any gaps between the ceiling and the cassette frame will release cool air, which will cause sweating. Water Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 62 CN_VANE 1,2 CN_DISPLAY (Appearances May Differ Depending on Model) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 63 Insulation should fit tightly so that air does not leak out where indicated Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 64 Insulation should fit tightly so that air does not leak out where indicated Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 65: Installing The Branch Duct

    Duct Chamber Cover the Whole Cabinet with Insulation Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 66 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 67 Do not reduce the bend the duct. many times. duct diameter. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 68: Branch Duct Options

    Do not connect the branch duct to another room. There will be a reduction in system performance. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 69 48k (TM ) 48k (TM ) Q (CFM) Q (CFM) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 70 42k (TM ) 1000 1000 Q (CFM) Q (CFM) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 71: Outside Air Ventilation

    -0.5 -0.6 -0.7 -0.8 -0.9 -1.0 Q (CFM) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 72 TP/TN/TM -0.6 -0.7 -0.8 -0.9 -1.0 Q (CFM) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 73: Installer Setting Mode

    Installer Setting Mode sets system functions. Only trained and licensed HVAC technicians should access / use the Installer Setting Mode. If any installation procedure or system change is performed by someone other than a trained and licensed HVAC technician, LG is not respon- sible for the results, and it will void the warranty.
  • Page 74 4. Reset the handheld controller to access the general operation mode. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 75: And Fc-6 / Fc-35

    • A sub-setting that isn’t recognized by the indoor unit will revert to the default setting. • The controller will display all sub-settings if the function is available for the indoor unit. Contact an LG Representative for details. Table 32: Wired Controller Settings FC-15 Set Codes and Displays.

  • Page 76: Setting Luu180-420Hv Optional Modes

    LUU090HV and LUU120HV outdoor units do NOT include DIP switches.on the PCBs, therefore, the optional modes listed on the next page are not available for these products. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 77 Night Low Sound + Mode Lock (Cooling) Level 2 (Maximum Fan 500 rpm, Compressor 50Hz) Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 78 • An improper Pump Down procedure will cause the system (along with the red and green LEDs) to shut off within twenty (20) minutes from the initial start. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 79 • If Night Low Sound mode needs to be stopped, change the DIP switches. • Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 80 • If Night Low Sound mode needs to be stopped, change the DIP switches. • Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 81: Troubleshooting

    Images on these pages are examples of LGMV screenshots. Actual images may differ depending on the version of the software and the unit installed. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 82 • Images on these pages are examples of LGMV screenshots. Actual images may differ depending on the version of the software and the units installed. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 83: Lg Thinq

    Figure 129: Example of an LG ThinQ Screen (appearances my LG ThinQ is a built-in Wi-Fi module, along with a free smart phone app that provides monitoring and differ depending on version of remote control capabilities for certain LG single zone systems. The app has the following features and software).

  • Page 84: Error Codes

    These codes are the most common that will manifest through these units. The system installed might generate additional codes not listed here. Contact an LG trained service provider if these types of errors are seen, and a simple power down and boot up has not corrected the issue.
  • Page 85 73 PSC / PFC overcurrent error (SW) CH73 Infinite Restart Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 86: Cautions For Refrigerant Leaks

    Standard 15-2010 / 34-2010 and addenda current as of the date of this publication. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 87: Installation Checklist

    No cables were spliced, and no wire caps are present. LG-supplied cable was used between the indoor unit and its zone controller. No cables were spliced and no wire caps are present. Appropriate crimping tool was used to attach ring or spade terminals at all power wiring and control cable terminations.
  • Page 88 20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics, U.S.A., Inc. Air Conditioning Technologies 4300 North Point Parkway Alpharetta, Georgia 30022 www.lghvac.com New Issue: IM_SZ_Cassette_10_23...

This manual is also suitable for:

Lc128hvLc188hvLc249hvLc369hvLc429hv

Table of Contents