LG Multi V water mini Series Installation Operation & Maintenance
  1. Manuals
  2. Brands
  3. LG Manuals
  4. Heat Pump
  5. Multi V water mini Series
  6. Installation operation & maintenance
LG Multi V water mini Series Installation Operation & Maintenance

LG Multi V water mini Series Installation Operation & Maintenance

Hide thumbs
Table of Contents

Advertisement

Quick Links

Installation, Operation & Maintenance Manual
Variable Refrigerant Flow Water Source Units
3.0, 4.0, and 4.4 Tons
Heat Pump 208-230V, 60Hz, 1 Phase
ARWN038GA2
ARWN048GA2
ARWN053GA2

Advertisement

Table of Contents
loading

Related Manuals for LG Multi V water mini Series

Summary of Contents for LG Multi V water mini Series

  • Page 1 Installation, Operation & Maintenance Manual Variable Refrigerant Flow Water Source Units 3.0, 4.0, and 4.4 Tons Heat Pump 208-230V, 60Hz, 1 Phase ARWN038GA2 ARWN048GA2 ARWN053GA2...
  • 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: Table Of Contents

    Pre-commissioning Checklist ....................................86-89 Refrigerant Charge Worksheet ....................................90 Due to our policy of continuous product innovation, some specifications may 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

    There is risk of product failure, 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 5 Improper piping may cause refrigerant leaks and system 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: 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 7: 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 8: Nomenclature

    Basic Function = A Generation 2 = Second Due to our policy of continuous product innovation, some specifications may 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: Water Source Unit Specifications

    Maximum allowable voltage imbalance is 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 10: Dimensions

    Water Inlet L1 L Side View Front View Due to our policy of continuous product innovation, some specifications may 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: Refrigerant Circuits

    Strainer Thermistor Valve Sensor Valve Valve Plug 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 12 Strainer Thermistor Valve Sensor Valve Valve Plug 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 13 Strainer Thermistor Valve Sensor Valve Valve Plug 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 14: Wiring Diagram

    ARWN038GA2, ARWN048GA2, ARWN053GA2 Figure 5: ARWN038GA2, ARWN048GA2, ARWN053GA2 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 15: Accessories

    O.D. 1 I.D. 1 13-1/16 3-3/16 4-3/8 2-3/4 Due to our policy of continuous product innovation, some specifications may 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 I.D. 1-1/4 I.D. 1-1/8 I.D. 5/8 I.D. 1-3/8 Due to our policy of continuous product innovation, some specifications may 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: Installation

    Route power wiring and communications cables in sepa- rate conduits. Due to our policy of continuous product innovation, some specifications may 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: Transporting / Lifting The Water Source 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 19: Minimum Space Requirements

    Plan View Front View Field-Provided H-Beam Support or 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 20: General Mounting / Anchoring The Water Source Unit

    All referenced materials are to be field-supplied. Images are not to scale, are for reference only, and are not intended to be used for design purposes. Due to our policy of continuous product innovation, some specifications may 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 Installation

    The piping system can be entered manually into LATS from a one-line pipe diagram. To ensure that the refrigerant piping design meets LG’s quality standards, a LATS refrigerant piping design must be provided with every Multi V Water Mini order.

  • Page 22: System Engineering

    Kit contains two Y-branches: one for liquid and one for vapor. Due to our policy of continuous product innovation, some specifications may 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 Tube wall thickness should meet local code requirements and be approved for an operating pressure of 551 psi. If local code does not spec- ify wall thickness, LG suggests using tube thickness per table below. When bending tubing, try to keep the number of bends to a minimum, and use the largest radii possible to reduce the equivalent length of installed pipe;...
  • Page 24 No Substitutions Only LG supplied Y-branch and Header fittings (as referenced below; sold separately) can be used to join one pipe segment to two or more segments. Third-party or field-fabricated Tee’s, Y-fittings, Headers, or other branch fittings are not qualified for use with LG Multi V Water Mini systems.
  • Page 25 Field supplied copper pipe LG supplied header LG supplied insulation jacket Due to our policy of continuous product innovation, some specifications may 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 ASTM B-88 Standards. Inches to feet conversion (12 in./ft.) Due to our policy of continuous product innovation, some specifications may 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 Pipe length baseline temperature = 0°F. "Expansion of Carbon, Copper and Stainless Steel Pipe," The Engineers' Toolbox, www.engineeringtoolbox. 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 28 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 29 Field-provided Isolation Ball Valves LG allows the installation of field-supplied ball valves with Schrader ports at each indoor unit. Full-port isolation ball valves with Schrader ports (positioned between valve and indoor unit) rated for use with R410A refrigerant should be used on both the liquid and vapor lines.
  • Page 30 Underground refrigerant pipe shall be routed inside a protective sleeve to prevent insulation deterioration. Wall Sleeve Due to our policy of continuous product innovation, some specifications may 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: Pipe Sizing

    See pages 32-33 for refrigerant pipe diameter and pipe length tables. Due to our policy of continuous product innovation, some specifications may 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 • Y-branches and other header branches cannot be installed downstream of the initial header branch. Due to our policy of continuous product innovation, some specifications may 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 Gas Pipe (Inches O.D.) 19,100 Ø1/4 Ø1/2 54,600 Ø3/8 Ø5/8 Due to our policy of continuous product innovation, some specifications may 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 A second branch cannot be installed after a header. Due to our policy of continuous product innovation, some specifications may 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: Refrigerant Pipe Connections

    • Do not attempt to remove the service valve stem and packing or Schrader valve core. Physical injury or death may occur from the uncontrolled rapid release of refrigerant. Due to our policy of continuous product innovation, some specifications may 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 5/8 ~ 11/16 ≤76,400 3/4 ~ 13/16 5/8 ~ 11/16 Due to our policy of continuous product innovation, some specifications may 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 Indoor Unit Casing Pipe Insulation Insulation Communication Cables Due to our policy of continuous product innovation, some specifications may 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: Insulating The Refrigerant Piping System

    3/8 inch thick ethylene propylene diene methylene (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 39 Applying Insulation to Y-Branch and Header Fittings Check the fit of the insulation jacket provided with the LG Y-branch and Header kits after all pipes are brazed to fittings. Mark all pipes at the point where the insulation jacket ends. Remove the jacket. Install field-supplied insulation on the pipe segments first, and then install the LG provided insulation plugs on the ends of all unused Header ports.

  • Page 40: Pressure Testing

    • 550 psi for a period of 24 hours Due to our policy of continuous product innovation, some specifications may 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: Water Circuit Installation

    Figure 41: Cooling Cycle Diagram. Figure 42: Heating Cycle 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 42 Antifreeze can be used for all geothermal applications. Refer to antifreeze information on page 44 for recommended levels of antifreeze and 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 43: Piping System Specifications

    Due to our policy of continuous product innovation, some specifications may 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 Antifreeze % by wt Antifreeze % by wt Due to our policy of continuous product innovation, some specifications may 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 • On condensate drain lines. • Where required by local code. Due to our policy of continuous product innovation, some specifications may 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 Due to our policy of continuous product innovation, some specifications may 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 49: Set the DIP switches as below and turn on the power (For water solenoid valve controlled by water source 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 48: Flow Switches And Solenoid Valves

    Field-supplied solenoid valve must be a normally closed type. Picture 3 Picture 3 Picture 4 Due to our policy of continuous product innovation, some specifications may 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: Variable Water Flow Control Kit

    6. SWDIP: Switch to select main function 7. SW1: Reset 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 50 • Do not damage the case of the Variable Water Flow Control Kit as it may cause the PCB to 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 Figure 54: Variable Water Flow Control Kit Wiring Diagram. Water Mini Unit Main PCB Due to our policy of continuous product innovation, some specifications may 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 • The use of an external power source is recommended. Due to our policy of continuous product innovation, some specifications may 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 • AWG 23 wiring is recommended for the power (DC 12V) line. Due to our policy of continuous product innovation, some specifications may 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 • AWG 23 wiring is recommended for the power (AC 12V) line and signal (DC 0~10V) line. Due to our policy of continuous product innovation, some specifications may 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 • Minimum flow rate recommended 40% of rated flow rate; if the flow rate is lower, it will damage the water source 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 56 • Minimum flow rate recommended 40% of rated flow rate; if the flow rate is lower, it will damage the water source 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 57: Electrical System Installation

    • Do not run the power wiring and the communication cable 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 58: Power Wiring

    If power wires are not properly terminated and firmly attached, there is risk of fire, electric shock, 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 59: Wiring And Cable Terminations

    • Always include some allowance in the wiring length when terminating. Provide some slack to facilitate removing the electrical panels while servicing. Due to our policy of continuous product innovation, some specifications may 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: Communications Cables

    Due to our policy of continuous product innovation, some specifications may 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 Connect the shield to ground ONLY at the water source unit. Tie shields together at each termination point. Due to our policy of continuous product innovation, some specifications may 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 • NEVER splice, cut, or extend cable length with field provided cable. If the length needs to be extended, the LG Extension Kit (sold separately) must be used. A maximum of four (4) kits (up to 165 feet) can be used.

  • Page 63: Pre-Commissioning And Maintenance

    (3) to seven (7) minutes. Due to our policy of continuous product innovation, some specifications may 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 / 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 65 (8) indoor units have been successfully auto addressed. Due to our policy of continuous product innovation, some specifications may 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 IDU(A) and IDU(B) of the water source unit. 10. Replace the control panel cover. Due to our policy of continuous product innovation, some specifications may 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: Group Control

    (See Central Controller Communications Limitations on the next page). Due to our policy of continuous product innovation, some specifications may 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: Central Control

    Can be assigned at will or for example, can follow the room layout on each floor. For each LG Central Controller product provided on the project, devise a central control address schedule and assign a central control ad- dress to each indoor unit(s) Hydro Kit(s), and ERV(s) units. Record this central control address for each component in the column provided on the Pre-commissioning Device Configuration Worksheet.
  • Page 69 18. After all Slave indoor unit have addresses assigned, go back to the Master indoor unit and restore power. Due to our policy of continuous product innovation, some specifications may 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: Indoor Unit Temperature Sensing Strategy / Air Balance

    Balance contractor. If necessary, provide instruction to the air balance technician on how to adjust the indoor unit fan setting value. Due to our policy of continuous product innovation, some specifications may 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: Prepare The Refrigerant Piping System

    Due to our policy of continuous product innovation, some specifications may 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: Preparing / Balancing The Water Circuit

    Test and Balance technician. If necessary, provide instruction to the technician on how to adjust the setting(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 73: Prepare Pre-Commissioning Package Documents

    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 74: Maintaining The Heat Exchanger

    Before using a chemical solution to clean the heat exchanger, note its potential to corrode stainless steel or copper. Consult the chemical solution manufacturer for more information. Due to our policy of continuous product innovation, some specifications may 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: General Maintenance Schedule

    Due to our policy of continuous product innovation, some specifications may 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 • Always check if the water supply is flowing normally and in the correct direction before operating the 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 77: Error Codes

    Images on these pages are examples of LGMV screenshots. Actual images may differ depending on the version of the software and the units installed. Due to our policy of continuous product innovation, some specifications may 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 Images on these pages are examples of LGMV screenshots. Actual images may differ depending on the version of the software and the units installed. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 79: Error Code Tables

    For detailed information on how to troubleshoot each error, see the Water Mini Service Manual on www.lg-vrf.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 80 For detailed information on how to troubleshoot each error, see the Water Mini Service Manual on www.lg-vrf.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 81 For detailed information on how to troubleshoot each error, see the Water Mini Service Manual on www.lg-vrf.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 82 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 84: Installation Checklist

    Insulation was not compressed at clamps and hangers. LG Y-branch fittings or headers were used as per LATS Multi V report. (Optional) Full port ball valves for all indoor units. (Schrader between the valve body and the indoor units.)
  • Page 85 No “Star” or multiple parallel circuits. No cable splices or wire caps were used to connect communications cables. LG-supplied cable was used between each indoor unit and its zone controller. No cables were spliced and no wire caps are present.

  • Page 86: Pre-Commissioning Checklist

    PRE-COMMISSIONING CHECKLIST Page 1 Job Name / Location ________________________________________________________________________ Tag # _________________ Date: ____________________________________________________________________________________ Address: _________________________________________________________________________________ _________________________________________________________________________________ Refrigerant Circuit Preparation Description Check Using a copy of the LATS Multi V pipe design diagram, verify the sum of the indoor unit nominal capacity connected to the piping system is between 50% and 130% of the water source unit’s nominal capacity.
  • Page 87 Date: _______________________________________________ *This form must be completed and submitted to LG a minimum of three (3) weeks prior to final scheduling of any startup. Note: If any of the above items are not complete at time of start-up, back charges will be assessed for additional costs.
  • Page 88 PRE-COMMISSIONING CHECKLIST Page 3 Notes for the Commissioning Agent...
  • Page 89 PRE-COMMISSIONING CHECKLIST Page 4 Notes for the Commissioning Agent...

  • Page 90: Refrigerant Charge Worksheet

    REFRIGERANT CHARGE WORKSHEET Note: The system will stop operation due to excessive or insufficient refrigerant, therefore, always charge the unit properly. When servicing, always refer to any notes about system piping length and additional refrigerant amounts. System Refrigerant Charge Calculator (lbs.). Job Name_______________________________________ System Tag or ID___________________________________ Project Manager__________________________________...
  • Page 91 For further technical materials such as submittals, engineering manuals, service manuals, and catalogs, visit www.lg-vrf.com.
  • Page 92 20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics, U.S.A., Inc. LG Customer Information Center, Commercial Products Commercial Air Conditioning Division 1-888-865-3026 USA 4300 North Point Parkway Follow the prompts for commercial A/C products. IM_MultiVWaterMini_5_16 Alpharetta, Georgia 30022 Supersedes VRF-IM-BM-001-US 013L26 www.lg-vrf.com...

This manual is also suitable for:

Arwn048ga2Arwn038ga2Arwn053ga2

Table of Contents