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LG Multi V Installation Manual
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LG Multi V Installation Manual

Floor-standing indoor unit
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See also: Service Manual , Installation Manual
GEN 4 Floor Standing Cased Models:
• ARNU073CEA4
• ARNU093CEA4
• ARNU123CEA4
• ARNU153CEA4
• ARNU183CFA4
• ARNU243CFA4
FLOOR-STANDING INDOOR UNIT

INSTALLATION MANUAL

GEN 4 Floor Standing Uncased Models:
• ARNU073CEU4
• ARNU093CEU4
• ARNU123CEU4
• ARNU153CEU4
• ARNU183CFU4
• ARNU243CFU4

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Summary of Contents for LG Multi V

  • Page 1: Installation Manual

    FLOOR-STANDING INDOOR UNIT INSTALLATION MANUAL GEN 4 Floor Standing Cased Models: GEN 4 Floor Standing Uncased Models: • ARNU073CEA4 • ARNU073CEU4 • ARNU093CEA4 • ARNU093CEU4 • ARNU123CEA4 • ARNU123CEU4 • ARNU153CEA4 • ARNU153CEU4 • ARNU183CFA4 • ARNU183CFU4 • ARNU243CFA4 • ARNU243CFU4...

  • Page 2: Proprietary Data Notice

    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: Table Of Contents

    Controls Setup ............................... 34 Installation Checklist ............................38 Due to our policy of continuous product innovation, some specifications may 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 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 5 U.S. Environmental Protection Agency (EPA) rules. Due to our policy of continuous product innovation, some specifications may 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 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 7 There is risk of unit failure. 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 8: Introduction

    • Drill • Thermometer • Flaring tool set Due to our policy of continuous product innovation, some specifications may 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 ARNU243CFA4 ARNU073CEU4 Uncased ARNU093CEU4 ARNU123CEU4 ARNU153CEU4 ARNU183CFA4 ARNU243CFA4 Due to our policy of continuous product innovation, some specifications may 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: Unit Nomenclature

    4 = Fourth 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 11: R410A Refrigerant

    551 psi design pressure of R410A. Inadequate piping may 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: General Data

    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 13 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: Dimensions

    ±1/4 in. ARNU073CEU4 ARNU093CEU4 38-1/2 25-3/16 7-15/16 ARNU123CEU4 ARNU153CEU4 Due to our policy of continuous product innovation, some specifications may 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 49-7/16 25-3/16 7-1/2 ARNU243CFU4 of ±1/4 in. Due to our policy of continuous product innovation, some specifications may 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: Electrical Data

    • Select wire size based on the larger MCA value • Use circuit breakers instead of fuses Due to our policy of continuous product innovation, some specifications may 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: Refrigerant Piping Diagram

    Heat Exchanger Heating Filter Sirocco Fan Filter lndoor 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 18: General Installation Guidelines

    • Install radiant heat or another type of heating system to 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: Required Clearances

    Refer to the Nomenclature chart on “Indoor Units Nomenclature” on page 10. Due to our policy of continuous product innovation, some specifications may 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: Installation

    To close the front panel, reverse the steps listed above. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 21: Refrigerant Piping

    • If flare looks good, blow clean the pipe with dry nitrogen. Due to our policy of continuous product innovation, some specifications may 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: Piping Materials And Handling

    No dust should be inside the piping. No leaks should occur. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp. Moisture Dust...

  • Page 23: Piping Materials And Handling

    Information about 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 24: Brazing

    • It is imperative to keep the piping system free of contaminants and debris such as copper burrs, slag, or carbon dust during installation. 1. All joints are brazed in the field. Multi V IV refrigeration system components contain very small capillary tubes, small orifices, electronic expansion valves, oil separators, and heat exchangers that can easily become blocked.

  • Page 25: Refrigerant Piping Connections

    • Do not over-tighten flare nuts. Excessive tightening will cause fittings to crack. • Multi V refrigeration system components contain very small capillary tubes, small orifices, electronic expansion valves, oil separators, and heat exchangers that can easily become blocked. Insulating the Piping Figure 8: Refrigerant Piping Connection Insulation Detail.

  • Page 26: Condensate Drain Piping

    Drain hose must be installed correctly or else there will be leaks at the Not Required Requir ed indoor unit site. Due to our policy of continuous product innovation, some specifications may 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: Wiring

    U.S. National Electric Code (NEC), and who is equipped with the proper tools and test instruments. Failure to carefully read and follow all instructions in this manual can result in equipment malfunction or property damage and will void the LG limited liability warranty.

  • Page 28: Indoor Unit Communications Cable Connections

    The minimum distance required between power wires and the communications cable is voltage/amperage dependent and in cases where either are relatively high the minimum distance may be more than two (2) inches. Refer to the appropriate LG Multi V Outdoor Unit Engineering Manual on www.lg-vrf.com for detailed information.

  • Page 29: Communications And Power Cable Connection

    Ground 208-230V / 60 Hz / 1 Phase Due to our policy of continuous product innovation, some specifications may 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: Dip Switch Settings For Gen4 Indoor Units

    Models 0A****, 1A, 2A *Gen 4 Air / Water Source Units = Multi V IV or Multi V Water IV with Gen 4 software (see table below for Gen 4 serial numbers) or Multi V S. Gen 2 Air / Water Source Units = Multi V II, Multi V III, Multi V IV without Gen. 4 software, Multi V Water II, Multi V Water IV without Gen. 4 software, Multi V Mini, Multi V Water Mini, or Multi V Space II.

  • Page 31: Floor-Standing Cassette Cased And Uncased Chassis

    Figure 16: Cased (CEA, CFA) and Uncased (CEU, CFU) Floor-Standing 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 32 **To enable Generation 4 features, outdoor unit DIP Switch No. 3 must be set to ON. Please refer to the Multi V IV, Multi V Wa- ter IV, Multi V S Engineering Manual for additional information.

  • Page 33: Wall-Mounted Sensor Installation

    (55) inches above the finished floor. • It may be necessary to use a handy box that is sized in metric units, depending on the controller model. Check with your LG representative to verify which size of handy box is needed for the zone controller in question.

  • Page 34: Controls Setup

    **To enable Generation 4 features, outdoor unit DIP Switch No. 3 must be set to ON. Please refer to the Multi V IV, Multi V Wa- ter IV, Multi V S Engineering Manual for additional information.

  • Page 35: Group Control

    Do not connect 12V line between slave indoor units Master Slave Signal Due to our policy of continuous product innovation, some specifications may 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 FAU: Outside Air Unit Standard: Standard Indoor Unit ZC: Zone 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 37: Remote Control

    Remote Master Sensor Display Error Message Signal Master Due to our policy of continuous product innovation, some specifications may 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: 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 39 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 40 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 41 20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics, U.S.A., Inc. LG Electronics Products Support Commercial Air Conditioning Division 1-888-865-3026 USA 4300 North Point Parkway Follow the prompts for HVAC products. Alpharetta, Georgia 30022 IM_MultiV_IV_Floor_Standing_8_17 Supersedes: IM_MultiV_IV_Floor_Standing_7_16 www.lg-vrf.com...

This manual is also suitable for:

Arnu073cea4Arnu093cea4Arnu123cea4Arnu153cea4Arnu243cfa4Arnu183cfa4

Table of Contents