LG LV181HV Installation Manual
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LG LV181HV Installation Manual

LG LV181HV Installation Manual

Single zone vertical air handling unit
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LV181HV (18,000 Btu/h)
LV241HV (24,000 Btu/h)
Single-Zone Vertical Air
Handling Unit System
18,000 - 60,000 Btu/h
VERTICAL AIR HANDLING UNIT
INSTALLATION MANUAL
LV420HV1 (42,000 Btu/h)
LV420HV2 (42,000 Btu/h)
LV480HV1 (48,000 Btu/h)
LV480HV2 (48,000 Btu/h)
LV600HV (60,000 Btu/h)
SINGLE ZONE
LV300HV (30,000 Btu/h)
LV361HV (36,000 Btu/h)

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Summary of Contents for LG LV181HV

  • Page 1 SINGLE ZONE VERTICAL AIR HANDLING UNIT INSTALLATION MANUAL LV181HV (18,000 Btu/h) LV241HV (24,000 Btu/h) LV300HV (30,000 Btu/h) LV361HV (36,000 Btu/h) Single-Zone Vertical Air Handling Unit System LV420HV1 (42,000 Btu/h) 18,000 - 60,000 Btu/h LV420HV2 (42,000 Btu/h) LV480HV1 (48,000 Btu/h) LV480HV2 (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: Safety Instructions

    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 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 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: Operation

    Do not block the inlet or outlet. Unit may 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 7: Table Of Contents

    Drain Hose ..................44 Bundling and Cutting Line ..............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

    V = Standard Inverter T = Thermostat Compatible 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: Specifications

    -4°F using the Low Ambient Wind Baffle Kit (sold separately). 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 6 18k and 24k VAHUs are supplied with socket adapters for pipe transitions. 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 -4°F using the Low Ambient Wind Baffle Kit (sold separately). 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 6 18k and 24k VAHUs are supplied with socket adapters for pipe transitions. 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: Electrical

    RLA = Rated Load Amps. down to the nearest standard fuse size. 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: General Installation Guidelines

    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 4. In an area in which condensate does not drain properly. 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: Oceanside Applications

    Building 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 17: 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 18 Building Overhang and No Side Walls LF 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 19 Building Overhang and No Side Walls LF > 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 20 Figure 6: Close up of Bolt Attachment. Anchor Bolt 13/16 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 6. Seal all wiring and piping access holes to prevent insects from entering the Bolt Bolt 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: Required Indoor Unit Clearances

    Service More than Unit : inch 13-25/32 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 • Go to 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 24: Horizontal Right Installation

    Figure 14: Install Pan on Right. Figure 15: Replace Panels. 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: Vertical Downflow Installation

    Figure 18: Evaporator Coil/ Drain Pan Assembly. Rotated Horizontal 180° Drain Pan 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 23: Reinstall Coil Assembly. Evaporator Sensor Coil/Drain Wiring Pan 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 27 Figure 27: Reinstall Sensors. Figure 28: Reinstall Panels. Sensors 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 28: Installing Ductwork

    Figure 30: Securely Fasten Supply Duct. More than 10 screws (M4*25L) 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: Refrigerant Safety Standards / Device Connection Limitations

    Feet) Additional Refrigerant Needed (oz/ft) 0.43 0.43 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: Selecting Field Supplied 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 31: Copper Expansion And Contraction

    4. Calculate the difference in the two expansion distance values. The result will be the change in pipe length. 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 R = Centerline Length of Pipe. L = Centerline Minimum Radius (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 33: Piping Handling

    1 hour 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: Refrigerant System Engineering

    Failure to do so may 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 may be voided in whole or part must any field supplied accessory fail in any way that causes product failure.

  • Page 35: Pipe Supports

    (12) to nineteen (19) inches of the bend on the other side. Max. 12" ~ 12" – 19" 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 Pipe Sleeves at Penetrations LG requires 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 37 Pipe must be allowed to move freely linearly. 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: Flaring And Brazing Procedures

    ~ 19.7 (49/64 - 25/32) 15.88 19.05 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 Do not braze in an enclosed location, and always test for gas leaks before / after brazing. There is risk of fire, explosion, 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 40: Refrigerant Piping Connections

    Always include plenty of insulation on all refrigerant and drain piping to ensure condensate does not form and cause damage to walls, floors, 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 41: Directional Pipe Formation

    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 42: Outdoor Unit Connections

    15.88 45.4 - 59.3 19.05 71.5 - 87.5 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 43: Indoor Unit Connections

    Do not block the outlet side Auxiliary valve Tape 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: Drain Hose

    Drain Hose Ai r Indoor Unit Water Waving 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 45: Bundling And Cutting Line

    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 46: 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 47 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 48: Electrical System Installation

    Failure to properly provide a National Electrical Code-approved earth ground can result in property damage and equipment malfunc- tion. 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: Power Wiring Specifications And Best Practices

    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 50 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 51 • Never use a common multiple-core communications 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 52: Wall Controller Installation

    Wired Controller Connections Controllers 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. 2. Field-supplied controller cable that connects to the indoor unit terminal block (must be at least UL2547 or UL1007, and at least FT-6 rated if local electric and building codes require plenum cable usage).

  • Page 53: External Static Pressure Setting Values

    3 seconds to exit installer setting 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 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: Indoor Unit Electrical Connections

    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: Outdoor Unit Electrical Connections

    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: Indoor Unit Wiring Diagram Lvn181Hv4, Lvn241Hv4, Lvn361Hv4

    Wiring Diagram for LVN181HV4, LVN241HV4, LVN300HCV, LVN361HV4 Figure 76: Indoor Unit Wiring Diagram. 7.19 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: Indoor Unit Wiring Diagram Lvn420Hv, Lvn480Hv

    Wiring Diagram for LVN420HV, LVN480HV Figure 77: 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 59: Indoor Unit Wiring Diagram Lvn600Hv

    Wiring Diagram for LVN600HV Figure 78: 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 60: Outdoor Unit Wiring Diagram Luu180Hv, Luu240Hv

    Wiring Diagram for LUU180HV, LUU240HV Figure 79: Outdoor 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 61: Outdoor Unit Wiring Diagram Luu360Hv, Luu420Hv, Luu480Hv

    Wiring Diagram for LUU360HV, LUU420HV, LUU480HV Figure 80: Outdoor 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 62: Outdoor Unit Wiring Diagram Luu601Hv

    Wiring Diagram for LUU601HV Figure 81: Outdoor 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 63: Nj, Nk Wiring Diagrams Legend

    Auxiliary Heater Relay Kit Auxiliary Heater Relay Kit Second stage heat 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: Nj/Nk Chassis Dip Switch Settings

    • SW5 OFF: Fan discontinuous operation. There would be reduction in heating capacity while defrosting or oil return 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 65: Outdoor Unit Dip Switch Settings

    Mode Lock (Cooling) + Night Quiet Mode (Step 2) 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: Final Installation Procedures

    Gas (Vapor) Service Port and cause product malfunction. 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 67: Triple Leak / Pressure And Evacuation Procedures

    Schrader ports (with core removed) using a vacuum hose. Open the gauge manifold and the vacuum pump 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 68: Triple Evacuation Procedure

    13. Shut the valve 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 69: Trim Charge, Test Run

    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: Pump Down, Cooling Only Mode

    • Entire lock or Mode lock cannot be set if you set heating or automatic operation through the central controller. 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: Troubleshooting

    Outdoor brushless direct current (BLDC) fan motor lock 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 72 Outdoor brushless direct current (BLDC) fan motor lock 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 73: Cautions For Refrigerant Leaks

    ASHRAE 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 74: Installation Checklist

    Power to outdoor unit and power/communications to indoor unit CANNOT be run in the same conduit. 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 20001747 ISO 9001: 2008 LG ELECTRONICS INC. For further technical materials such as submittals, engineering manuals, service manuals, and catalogs, visit www.lghvac.com. LG Electronics, U.S.A., Inc. IM_SZ_VAHU_12_23 Commercial Air Conditioning Division Supercedes: IM_SZ_VAHU_09_23 4300 North Point Parkway IM_SZ_VAHU_12_19 Alpharetta, Georgia 30022 IM_SZ_VAHU_12_17 www.lg-vrf.com...

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