LG Multi V Installation Manual
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LG Multi V Installation Manual

Convertible surface mounted and ceiling suspended indoor units
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See also: Service Manual , Installation Manual
Convertible Surface Mounted and Ceiling Suspended Indoor Units

Installation Manual

Convertible Surface Mounted Indoor Unit
Ceiling Mounted
Convertible Surface Mounted Indoor Unit
Wall Mounted
Ceiling Suspended Indoor Unit

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Summary of Contents for LG Multi V

  • Page 1: Installation Manual

    Convertible Surface Mounted and Ceiling Suspended Indoor Units Installation Manual Convertible Surface Mounted Indoor Unit Ceiling Mounted Convertible Surface Mounted Indoor Unit Wall Mounted Ceiling Suspended Indoor Unit...
  • Page 2 Do not throw away or destroy this manual. Please read carefully and store in a safe place for future reference. The instructions below must be followed to prevent product malfunction, property damage, injury or death to the user or other people. Incorrect operation due to ignoring any instructions will cause harm or damage.

  • Page 3: Table Of Contents

    Finishing the Installation ......................................33 Who to Call for Assistance ......................................35 Due to our policy of continuous product innovation, some specifications may 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: Safety Precautions

    Destroy the structure of plastic packaging and boxes to prevent children Due to our policy of continuous product innovation, some specifications may 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 There is risk of fire, electric shock, explosion, 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 6: Introduction

    ARNU243VJA2 24,200 Btu/h These units are part of an LG Variable Refrigerant Flow (VRF) Heating, Ventilation, and Air Conditioning (HVAC) system. All of these units operate on 208–230 V, 60 Hz, 1-phase power. Install these unit(s) in the location(s) specified by your architectural blueprints, HVAC system layout drawings, or other appropriate docu- ments.
  • Page 7 2 = Second A = Second, Revision A Due to our policy of continuous product innovation, some specifications may 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 Features

    Air Filter Right Side Cover Return Air 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 9: Installation Parts

    Communications cable, IDU to ODU: 18 AWG, 2 conductor, stranded and shielded (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 10: Installation Tools

    Caulk or sealer for wall penetration Vinyl tape Pipe supports Tube cutter Due to our policy of continuous product innovation, some specifications may 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: Unpack The Indoor Unit/Inspect For Freight Damage

    Contact your supervisor for instructions to file a freight claim and order a replacement 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 12: Roughing In Overview

    Figure 2: Convertible Surface Mounted Unit Clearance 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 13: Preparing For Installation

    Figure 4: Mounting Plate Location Figure 5: Secure Mounting Plate Due to our policy of continuous product innovation, some specifications may 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: Convertible Indoor Unit

    Side View Figure 8: Positioning the Ceiling Mounted 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 15: Mounting The Ceiling Suspended Unit

    Figure 12: Drill Drain Pipe Hole Due to our policy of continuous product innovation, some specifications may 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: Roughing-In Wall-Mounted Zone Controllers

    If no mounting height was specified by the building designer, place the handy box approximately 55 inches above the finished floor. 2. Pull LG communications cable between the zone controller handy box and the indoor unit. A 30 foot cable comes with the wall-mounted zone controller.

  • Page 17: Refrigerant Safety

    Figure 14: Refrigerant Pipe Support Locations Due to our policy of continuous product innovation, some specifi cations may change without notifi cation. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 18: Refrigerant Pipe Connections

    Follow the procedure below for brazing. Note: All joints are brazed in the field. Multi V outdoor unit refrigeration system components contain very small capillary tubes, small orifices, electronic expansion valves, oil separators, and heat exchangers that can easily become blocked.

  • Page 19: Condensate Pipe Connection

    Ditch Figure 17: Incorrect Condensate Pipe Installation Due to our policy of continuous product innovation, some specifications may 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: Connect Drain Pipe

    7. If necessary, reposition drain hose to allow proper flow. Figure 18: Verify Proper Condensate Drainage Due to our policy of continuous product innovation, some specifications may 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: Insulate Pipes

    • Use field-provided 1/2” thick (or more) closed cell insulation. The thickness may need to be increased based on ambient conditions and local codes. • All refrigerant a condensate piping including field-provided isolation ball valves and flexible pipe connection kits provided by LG should be wrapped.

  • Page 22: Power Wiring

    11. Securely tighten the terminal screws to prevent the conductors from coming loose. Due to our policy of continuous product innovation, some specifications may 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: Outdoor/Indoor Unit Communications Cable Installation Guidelines

    The polarity of the communications cable connections is important. When connecting the communications cable conductors at each Multi V™ system component (Figure 20), be careful the conductor connected the to the IDU(A) terminal on the outdoor unit is connected to the 3(A) terminals at each indoor unit.
  • Page 24 15. Secure the communications cable to the inside surface of the Due to our policy of continuous product innovation, some specifications may 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 If the distance between the zone controller and indoor unit exceeds 30 feet, purchase an LG zone controller communications extension cable (32 feet, Model No. PZCWRCG3). This extension cable has a female connector on one end and a male connector on the other.

  • Page 26: Zone Controller Cable Installation

    Floor set for ceiling or floor, as appropriate. Due to our policy of continuous product innovation, some specifications may 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 25: Ceiling Suspended IDU Control Circuit Board Due to our policy of continuous product innovation, some specifications may 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 Indoor Unit Communications Bus (“B” Conductor) Terminal Block 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 29: Connecting An Lg Dry Contact Device

    Do not use the other methods. (Refer to Figure 26). Figure 26: Smoke Detector Field 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 30: Indoor Unit Control Settings

    Refer to the zone controller installation manual for detailed information on setting the sensor control DIP switch. Due to our policy of continuous product innovation, some specifications may 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: Indoor Unit Installation Checklist

    Double layer insulation is provided at pipe supports and wall penetrations. Due to our policy of continuous product innovation, some specifications may 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 Power and communications cables are properly restrained and separated. Due to our policy of continuous product innovation, some specifications may 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: Finishing The Installation

    Final Checks before Leaving Site Use the checklist on the following pages to verify all tasks have been completed prior to calling for the Multi V system to be commissioned. Place the System ID and Indoor Unit ID at the top of the page, sign and date. Provide a copy to your company’s project manager or your Multi V System Commissioning Technician.
  • 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: Who To Call For Assistance

    Installation, Startup, and Commissioning Technical Assistance ...... 1-888-865-3026 Due to our policy of continuous product innovation, some specifications may 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 20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics LG Customer Information Center, Commercial Products Commercial Air Conditioning Division 1-888-865-3026 USA 11405 Old Roswell Road Follow the prompts for commercial A/C products and parts. Alpharetta, Georgia 30009 www.lg-vrf.com VRF-IM-DK-001-US 013D29...

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