LG KSSLA121A Engineering Manual
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LG KSSLA121A Engineering Manual

LG KSSLA121A Engineering Manual

R32 single zone multi-position air handling unit
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MULTI-POSITION AIR HANDLING UNIT
KSSLA121A (12,000 Btu/h)
KSSLA181A (18,000 Btu/h)
KSSLA241A (24,000 Btu/h)
R32 SINGLE ZONE
ENGINEERING MANUAL
KSSLA301A (30,000 Btu/h)
KSSLA361A (36,000 Btu/h)
KSSLA421A (42,000 Btu/h)
KSSLA481A (48,000 Btu/h)
WITH

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Summary of Contents for LG KSSLA121A

  • Page 1 R32 SINGLE ZONE MULTI-POSITION AIR HANDLING UNIT WITH ENGINEERING MANUAL KSSLA121A (12,000 Btu/h) KSSLA301A (30,000 Btu/h) KSSLA181A (18,000 Btu/h) KSSLA361A (36,000 Btu/h) KSSLA241A (24,000 Btu/h) KSSLA421A (42,000 Btu/h) KSSLA481A (48,000 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 Microsoft® Corporation. ® LATS Revit integrates the LG LATS program with Revit® software**. It permits engineers to layout and validate LG VRF, Multi F / Multi F MAX, Single-Zone, and DOAS directly into Revit drawings.

  • Page 4: Lg Air Conditioner Technical Solution (Lats)

    LATS can generate an Excel GERP report that can be imported into the LG SOPS pricing and ordering system.

  • Page 5: Table Of Contents

    Controllers ..........................................107-108 Limited Warranty �������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������� 109 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: Table Of Symbols

    R32 Refrigerant LG Electronic split system heating and air conditioning (HVAC) products now contain R32 refrigerant. While R32 refrigerant is slightly flammable, it has a higher efficiency, a lower Global Warming Potential (GWP) value, and is more environmentally friendly than R410A.

  • Page 7: Product Data

    PRODUCT DATA Nomenclature on page 8 Pairing Table on Page 9 Mechanical Specifications on page 10 General Data on page 13 Electrical Data on page 19 Functions, Controls, and Options on page 20 Accessories on page 21 Outdoor Unit Dimensions on page 25 Outdoor Unit Center of Gravity / Corner Weight on page 27 Indoor Unit Dimensions on page 28 External Static Pressure and Air Flow on page 30...

  • Page 8: Nomenclature

    1 to 9 9. Function A = 208~230V 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: Pairing Table

    KUSXA301A, KUSXA361A, KUSXA422A,KUSXA482A KNSLA301A, KNSLA361A, KNSLB421A, KNSLB481A (NB Frame) 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: Mechanical Specifications

    (requires conversion kit sold separately), horizontal left, and thermal OFF. horizontal right configurations. 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 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: Refrigerant Leak Detector

    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: General Data

    (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 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 (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 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 (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 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 (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 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 (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 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 (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB). 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: Electrical Data

    LRA = Locked Motor Amps 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 20: Functions, Controls, Options

    BACnet® is a registered trademark of ASHRAE. LonWorks® is a trademark of Echelon Corporation. 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: Accessories

    ACCESSORIES LG Monitoring View (LGMV) Diagnostic Software and Cable LG Monitoring View (LGMV) is a maintenance and troubleshooting tool for Multi V™ air conditioning systems. LGMV formats are available for computer or mobile phone use. The main screen for LGMV allows the user to view the following real time data: •...
  • Page 22 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: Electric Heater

    Image shown above may vary depending on model capacity. For additional information, refer to the Electric Heater Manual. If a Third-Party Dry Contact and an LG internal heater or an LG Auxiliary Heat Kit is installed, supplemental heat capability cannot be controlled by the Third-PartyThermostat.
  • Page 24 120 W PQSH1200 Included KUSXA361A, KUSXA422A, KUSXA482A 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: Outdoor Unit Dimensions

    Figure 7: KUSXA121A, KUSXA181A, KUSXA241A Outdoor Unit Dimensions. 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 Figure 8: KUSXA301A, KUSXA361A, KUSXA422A, KUSXA482A Outdoor Unit Dimensions. 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: Outdoor Unit Center Of Gravity / Corner Weight

    • Diagrams above are for illustrative purposes only. Actual appearance depends on model type. • Design features and information of outdoor unit may be changed without notifications due to LG’s policy of innovation. • The center of gravity and corner weight may be different from the actual values because these are simulation results.

  • Page 28: Indoor Unit Dimensions

    Figure 11: KNSLB121A, KNSLA181A, KNSLA241A Indoor Unit Dimensions. 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 29 Figure 12: KNSLA301A, KNSLA361A, KNSLB421A, KNSLB481A Indoor Unit Dimensions. 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 30: External Static Pressure And Air Flow

    1,000 1,100 Air Flow Rate (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 31 1,400 1,600 Air Flow Rate (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 32 1000 HIGH 1400 KNSLB481A 1200 1070 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 33: Outdoor Unit Acoustic Data

    Figure 15: KUSXA121A Outdoor Unit Sound Pressure Level Diagram. 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 34 Octave Band Center Frequency (Hz) Octave Band Center Frequency (Hz) 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 35 Octave Band Center Frequency (Hz) Octave Band Center Frequency (Hz) 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 36: Indoor Unit Acoustic Data

    Octave Band Center Frequency (Hz) Octave Band Center Frequency (Hz) 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 37 8000 Octave Band Center Frequency (Hz) 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 38 Figure 25: KNSLB421A Indoor Unit Sound Pressure Level Diagram. 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 Figure 26: KNSLB481A Indoor Unit Sound Pressure Level Diagram. 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: Performance Data

    PERFORMANCE DATA Cooling Capacity on page 41 Maximum Cooling Capacity on page 48 Heating Capacity on page 55 Maximum Heating Capacity on page 62 Correction Factors on page 69 Check Selection on page 70...

  • Page 41: Cooling Capacity

    Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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 Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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 Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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 Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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 Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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 Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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 Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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: Maximum Cooling Capacity

    Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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 Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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 Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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 Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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 Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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 Grey shading indicates reference data. When operating the unit at this temperature, these values can be different by discontinuous operation 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 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: Heating Capacity

    Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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 Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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 Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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 Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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 Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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 Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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 Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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: Maximum Heating Capacity

    Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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 Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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 Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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 Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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 Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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 Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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 Capacity as rated: 0 ft. above sea level with 25 ft. of refrigerant piping. 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: Correction Factors

    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: Check Selection

    • Use caution when sizing to meet listed capacity specifications for the scheduled manufacturer’s equipment. If further system design assistance is needed, or you have a unique application you would like to discuss, contact an LG sales rep. Due to our policy of continuous product innovation, some specifications may change without notification.

  • Page 71: Application Guidelines

    APPLICATION GUIDELINES Placement / Clearance Considerations for Indoor Units on page 72 Placement / Clearance Considerations for Outdoor Units on page 74 Installing Outdoor Units Indoors on page 80...

  • Page 72: Indoor Unit Placement / Clearance Considerations

    More than 11-25/32 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 73 Also, add a ceiling grille for ventilation. 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 74: Outdoor Units

    Outdoor unit requires condensate drain piping. Condensate drain pipe is constructed with materials approved by local code. See section on outdoor unit placement. 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 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 76 Additional anti-corrosion treatment may need to be applied to the outdoor unit at oceanside locations. 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 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 78 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. Single Unit—High Rear and Front Walls...
  • Page 79 Minimum 24" Minimum 24" Minimum 40" 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: Installing Outdoor Units Indoors

    • Discharge and supply ductwork must be designed to avoid weather related long periods of water entrainment and the potential for microbial growth. 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 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 /min. = 247% (Within Allowable Limits) 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: Refrigerant Piping Design

    REFRIGERANT PIPING DESIGN Refrigerant Flow Diagrams on page 84 Connection Limitations and System Layout on page 88 Additional Refrigerant Charge on page 89 Refrigerant Piping System Engineering on page 90...

  • Page 84: Refrigerant Flow Diagrams

    Outdoor Unit KUSXA121A Various tools are available to assist in properly designing LG R32 split systems. Refer to the “R32 Application Guide”; the “Simple Calculator for Ca- pacity, Refrigerant Charge and ESP”; the “LG Air Conditioner Technical Solutions” (LATS) software program; and the local LG Sales Representative.
  • Page 85 Outdoor Units KUSXA181A, KUSXA241A, KUSXA301A, KUSXA361A Various tools are available to assist in properly designing LG R32 split systems. Refer to the “R32 Application Guide”; the “Simple Calculator for Ca- pacity, Refrigerant Charge and ESP”; the “LG Air Conditioner Technical Solutions” (LATS) software program; and the local LG Sales Representative.
  • Page 86 Outdoor Units KUSXA422A,KUSXA482A Various tools are available to assist in properly designing LG R32 split systems. Refer to the “R32 Application Guide”; the “Simple Calculator for Ca- pacity, Refrigerant Charge and ESP”; the “LG Air Conditioner Technical Solutions” (LATS) software program; and the local LG Sales Representative.
  • Page 87 Indoor Units Various tools are available to assist in properly designing LG R32 split systems. Refer to the “R32 Application Guide”; the “Simple Calculator for Ca- pacity, Refrigerant Charge and ESP”; the “LG Air Conditioner Technical Solutions” (LATS) software program; and the local LG Sales Representative.

  • Page 88: Connection Limitations And System Layout

    LAYOUT Various tools are available to assist in properly designing LG R32 split systems. Refer to the “R32 Application Guide”; the “Simple Calculator for Ca- pacity, Refrigerant Charge and ESP”; the “LG Air Conditioner Technical Solutions” (LATS) software program; and the local LG Sales Representative.

  • Page 89: Additional Refrigerant Charge

    ADDITIONAL REFRIGERANT CHARGE Various tools are available to assist in properly designing LG R32 split systems. Refer to the “R32 Application Guide”; the “Simple Calculator for Ca- pacity, Refrigerant Charge and ESP”; the “LG Air Conditioner Technical Solutions” (LATS) software program; and the local LG Sales Representative.

  • Page 90: Refrigerant Piping System Engineering

    ENGINEERING Various tools are available to assist in properly designing LG R32 split systems. Refer to the “R32 Application Guide”; the “Simple Calculator for Ca- pacity, Refrigerant Charge and ESP”; the “LG Air Conditioner Technical Solutions” (LATS) software program; and the local LG Sales Representative.
  • Page 91 ENGINEERING Various tools are available to assist in properly designing LG R32 split systems. Refer to the “R32 Application Guide”; the “Simple Calculator for Ca- pacity, Refrigerant Charge and ESP”; the “LG Air Conditioner Technical Solutions” (LATS) software program; and the local LG Sales Representative.
  • Page 92 ENGINEERING Various tools are available to assist in properly designing LG R32 split systems. Refer to the “R32 Application Guide”; the “Simple Calculator for Ca- pacity, Refrigerant Charge and ESP”; the “LG Air Conditioner Technical Solutions” (LATS) software program; and the local LG Sales Representative.
  • Page 93 ENGINEERING Various tools are available to assist in properly designing LG R32 split systems. Refer to the “R32 Application Guide”; the “Simple Calculator for Ca- pacity, Refrigerant Charge and ESP”; the “LG Air Conditioner Technical Solutions” (LATS) software program; and the local LG Sales Representative.

  • Page 94: Pipe Supports

    ENGINEERING Various tools are available to assist in properly designing LG R32 split systems. Refer to the “R32 Application Guide”; the “Simple Calculator for Ca- pacity, Refrigerant Charge and ESP”; the “LG Air Conditioner Technical Solutions” (LATS) software program; and the local LG Sales Representative.
  • Page 95 ENGINEERING Various tools are available to assist in properly designing LG R32 split systems. Refer to the “R32 Application Guide”; the “Simple Calculator for Ca- pacity, Refrigerant Charge and ESP”; the “LG Air Conditioner Technical Solutions” (LATS) software program; and the local LG Sales Representative.

  • Page 96: Electrical

    ELECTRICAL General Guidelines on page 97 Wiring Diagrams on page 98 Power Supply / Power Wiring on page 104 Communication / Connection Cable on page 105 Controllers on page 107...

  • Page 97: General Guidelines

    Do not allow wire to touch refrigerant piping, the compressor or any moving parts since it can lead to mechanical failure. 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 98: Wiring Diagrams

    Figure 54: KUSXA121A Outdoor Units Wiring Diagram. MEZ68866125_Rev.02 061324 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 99 1Φ, 208/230 V, 60 Hz 1Φ, 208/230 V, 60 Hz 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 100 Figure 56: KUSXA301A, KUSXA361A Outdoor Units Wiring Diagram. GN/YL 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 101 UTILISER DES FILS D’ALIMANTATION EN CUIVRE. 1Φ, 208/230 V, 60 Hz 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 102 Figure 58: KNSLB121A, KNSLA181A, KNSLA241A Indoor Unit Wiring Diagram. 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 103 Figure 59: KNSLA301A, KNSLA361A, KNSLB421A, KNSLB481A Indoor Unit Wiring Diagram. 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 104: Power Supply / Power Wiring

    1Φ, 208/230 V, 60 Hz Power Wiring (Including Ground) 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 105: Communication / Connection Cable

    Failure to do so will lead to electric shock which can cause physical injury or death. Wiring 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 106 Indoor Unit 1Φ, 208/230 V, 60 Hz 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 107: Controller Options

    Optional controllers (see “Functions, Controls, Options”, or contact an LG representative for more information) can connect to the indoor unit in one of two different ways. 1. LG Wired Remote Extension Cable with Molex plug (PZCWRC1; sold separately) that connects to the CN-REMO terminal on the indoor unit PCB.
  • Page 108 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 109: Limited Warranty

    “The product’s full Limited Warranty terms and conditions and arbitration requirements are available at https://www.lghvac.com." 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 110 LG Electronics, U.S.A., Inc. Air Conditioning Technologies 4300 North Point Parkway Alpharetta, Georgia 30022 NEW ISSUE: EM_SZ_MultiPositionAHU_ LGRED_R32_03_25 www.lghvac.com...

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