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LG LSN181HSV5 Installation Manual

Standard wall-mounted indoor unit
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STANDARD WALL-MOUNTED INDOOR UNIT
MULTI
MULTI
INSTALLATION MANUAL
Models:
LMN079HVT
LSN090HSV5
LSN120HSV5
LMN159HVT
LSN181HSV5
LMN249HVT
F
F
MAX
7 kBtu
9 kBtu
12 kBtu
15 kBtu
18 kBtu
24 kBtu

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Summary of Contents for LG LSN181HSV5

  • Page 1 MULTI MULTI STANDARD WALL-MOUNTED INDOOR UNIT INSTALLATION MANUAL Models: LMN079HVT 7 kBtu LSN090HSV5 9 kBtu LSN120HSV5 12 kBtu LMN159HVT 15 kBtu LSN181HSV5 18 kBtu LMN249HVT 24 kBtu...
  • 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

    Exposure to high concentration levels of refrigerant gas will lead to ill- ness 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 4 There is a risk of equipment damage. There is risk of product 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 5 Poor cable connections can cause 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 6 Keep the power switch on during the operational season. 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

    Error Codes .......................................... 58-59 Installation Checklist ....................................... 60-61 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: Unit Nomenclature

    • All indoor units are compatible with wired controllers 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 • Pipes - vapor line and liquid line, with insulation • Additional drain hose 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 9,000 10,900 LSN120HSV5 12,000 13,600 LSN181HSV5 18,000 21,600 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: General Data

    551 psi design pressure of R410A. Inadequate piping will fail when pressurized. 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 This unit comes with a dry helium charge. 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: Dimensions

    Left Rear piping Right Rear piping 12-1/8 (308) 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 Left Rear piping Right Rear piping 13-19/32 (345) 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: Refrigerant Piping Diagram

    Water Level Sensor (Optional) CN-TH3 Water Level Sensor (Optional) CN-TH3 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: Installation

    If damage is found, repack the unit as it was received in the original container. 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: Indoor Unit Location Selection

    Heat or steam source listed. 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 Clearances

    LSN181HSV5, LMN249HVT At least 6.5 feet from the floor 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: Choose Piping And Wiring Route / Drilling Piping Hole

    2. Finish off the newly drilled hole as shown with bushing and sleeve covering to prevent damage to the insulation and 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 20: Preparing For Installation

    Measuring Tape Hanger (Unit : Inch) (Unit : Inch 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 Figure 15: Remove Screws from Bottom Panel. Figure 16: Remove Bottom Panel. 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 Vary Depending on Indoor Unit Model). Top Snaps C-Hooks Hinge 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: Mounting The Indoor Unit

    • To prevent condensate from forming due to an inflow of outdoor air, before indoor unit installation is finished, completely seal the piping ac- cess hole in the wall. 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 4. Secure piping with the piping holder if appropriate. Unfold slowly Bend from downward downward position 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 Positioning the drain hose at the top of the bundle can cause conden- 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 6. To protect the piping, condensate drain, and conduit from the elements, add a lineset cover from the indoor access hole to 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 27 Insulation Material Communication / Connection (Power) 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 28: Flaring Procedure

    MULTI Flaring Procedure One of the main causes of refrigerant leaks is a defective connection. For LG HVAC systems, the installer needs to know how perform flared 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 29 Always use two (2) wrenches to loosen the flare nuts. 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: Outdoor Unit To Indoor Unit Connections

    18,000 Btu/h Low Static Duct and Four-Way Cassette Units 24,000 Btu/h 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 Flare Flare Outdoor Indoor Unit Unit Connection Socket 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 (Only for 36 kBtu/h Indoor Units to Connect to “D ROOM”) 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 Connect to “D ROOM”) (7~24 kBtu/h 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 34 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: Condensate Drain Hose Installation

    Indoor Unit Drain Hose Drain Pipe Exterior Wall 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 2. Verify that the water flows appropriately through and out of the drain hose without any leaks. 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 2. When the location is air conditioned, but internal temperature/humidity are high. • Bathroom, swimming pool, locker room, etc. 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: Piping Insulation

    Ensure all refrigerant piping is insulated. Exposed refrigerant piping will cause burns if touched. Wrap all refrigerant and condensate piping including field-provided isolation ball valves and flexible pipe connection kits provided by LG. All pipes must be insulated and each pipe must be separately wrapped. Any exposed piping will generate condensate or will cause burns if touched.

  • Page 39: Wiring

    Do not operate the air conditioning system until the refrigerant piping installation is complete. Operating the system before refrigerant piping is finalized will damage the compressor. 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 Improperly grounding this cable can cause communications errors. 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 • Provide a circuit breaker between the power source and the outdoor unit. Failure to do so will cause bodily 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 42 Ground Wiring Outdoor Unit Ground Wiring 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 43 • If using the LG Controller / Extension cable and the length needs to be further extended, the LG Extension Kit (sold separately) must be used. A maximum of four (4) kits (up to 165 feet) can be used.
  • Page 44 • Selection of operation options (operation/mode/set temperature) • Control of air flow rate (High/Medium/Low) 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: Indoor Unit Electrical Connections

    Figure 69: Remove Screws from Bottom Panel. Figure 70: Remove Bottom Panel. 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 9. Reattach the control cover using the screw. 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 Figure 73: LMN079HVT, LMN159HVT, LMN249HVT 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 48: Power Wiring / Communication Cable Connections

    BDU: 1(L1 ) 2(L2) ODU: 3 or S 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 • Use a conduit to protect the cable / refrigerant piping from the indoor unit to 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 50 Connection Cable Cable Clamp 1(L1) 2(L2) 3 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 * This function can be optional or factory installed depending on the application 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 52 BDU: 1(L1 ) 2(L2) ODU: 3 or S 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: Optional Wall-Mounted Sensor And Controller

    (4) to five (5) feet above the finished floor. • It could be necessary to use a handy box that is sized in metric units, depending on the sensor model. Check with your LG representative to verify which size of handy box is needed for the sensor in question.

  • Page 54: Final Installation Procedures

    Figure 88: Reattaching the Screws on the Bottom Bottom Panel. Panel. 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 Sides (Step 4). tions Are Secure (Step 5). 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: Air Filter Disassembly And Assembly

    5. Checking the Sides for Correct Air Filter Assembly. 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: Installing Batteries

    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: Troubleshooting

    Indoor unit BLDC motor fan lock Indoor unit middle pipe sensor error 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 Refer to Service Manuals posted on www.lghvac.com for a full description of all error codes and workarounds. 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: Installation Checklist

    (Optional) High quality R410A rated full port ball valves with a Schrader port were used at all indoor units and at will in the refrigerant piping network. (Recommended for serviceability.) 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 Only LG-supplied Y-cables were used between grouped indoor units, if applicable. 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 Who to call for assistance Freight Damage and Unit Replacements Your LG Manufacturer Representative Missing Parts Your LG Manufacturer Representative Freight Damage and Unit Replacements Your LG Manufacturer Representative Received Wrong Indoor Unit Model Your LG Manufacturer Representative Installation, Startup, and Commissioning Technical Assistance 1-888-865-3026 For warranty information, visit www.lghvac.com.
  • Page 63 20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics, U.S.A., Inc. Air Conditioning Technologies IM_MultiF_StdWallMount_9HVT_HSV5_11_22 4300 North Point Parkway Supersedes: IM_MultiF_StdWallMount_9HVT_HSV5_11_18 Alpharetta, Georgia 30022 IM_MultiF_StdWallMount_11_15 www.lghvac.com IM-Multi-F_StdWallMount-03-15...

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