LG MULTI V ARNH423K3A4 Installation Manual
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LG MULTI V ARNH423K3A4 Installation Manual

Hydro kit high temperature (k3)
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HYDRO KIT HIGH TEMPERATURE (K3)
INSTALLATION MANUAL
42,000 Btu/h
76,000 Btu/h
Variable Refrigerant Flow Indoor Units

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Summary of Contents for LG MULTI V ARNH423K3A4

  • Page 1 HYDRO KIT HIGH TEMPERATURE (K3) INSTALLATION MANUAL 42,000 Btu/h 76,000 Btu/h Variable Refrigerant Flow Indoor Units...
  • Page 2 4. For more technical materials such as submittals, catalogs, engineering, owner’s, best practices, and service manuals, visit www.lghvac.com. For continual product development, LG Electronics U.S.A., Inc. reserves the right to change specifications without notice. © LG Electronics U.S.A., Inc.

  • Page 3: Table Of Contents

    Connecting the Wiring and Cables ..........51-52 ..................13 Connecting Included Hydro Kit Accessories......... 53-57 Electrical Data ................... 14 Connecting Optional LG Hydro Kit Accessories ......58-63 Dimensions .................. 15-16 Connecting Third-Party Accessories..........64-69 Wiring Diagram — ARNH423K3A4, ARNH763K3A4 ......17 Resistance Test .................

  • Page 4: Safety Precautions

    Do not install or remove the unit by yourself (end user). aged. Ask the dealer or an LG trained technician to install the unit. shock, physical injury or death. If the air conditioner is installed in a small space, take...
  • Page 5 The Hydro Kit water circuit could require antifreeze. Always ask the dealer or an LG trained technician to install the water circuit. Only use the parts included or approved for the product.
  • Page 6 SAFETY PRECAUTIONS When installing refrigerant piping, consider pipe expansion. Do not make refrigerant substitutions. Use R410A only. Improper pipe installation will lead to pipe fatigue / failure and a rapid release of refrigerant, which results in product malfunction. unit will malfunction and damage will occur. Follow manufacturer’s instructions when performing leak and Take appropriate actions at the end of HVAC equipment life evacuation tests.
  • Page 7 OPERATION AND MAINTENANCE DANGER Do not operate unit or disconnect switch with wet hands. or submerged. Contact the supplier or an LG trained techni- cian. Verify the piping system has been properly evacuated, and the system’s refrigerant charge is correct before commis- sioning and after any repair is made.
  • Page 8 SAFETY PRECAUTIONS Do not allow water, dirt, or animals to enter the (Hydro Kit) Do not place anything on the power cable. unit. Do not disconnect the power supply during operation. Do not operate the unit with the panel(s) or protective Do not disconnect the power supply of the Hydro Kit if op- ing parts.

  • Page 9: General Data

    GENERAL DATA Unit Nomenclature Family ARN = Multi V Indoor Unit (Refrigerant R410A) Type H = Hydro Kit Nominal Cooling Capacity in Btu/h 42 = 42,000 76 = 76,000 96 = 96,000 Electrical Ratings 3 = 208–230V/60Hz/1Ph Model K2 = Hydro Kit Water Heater / Cooler K3 = Hydro Kit High Temp Water Heater Feature A = Basic...

  • Page 10: Introduction

    Hydro Kits Figure 1: 76K High Temperature Hydro Kit. This manual describes how to install the LG Hydro Kit, High Temperature units for Multi V Vari- able Refrigerant Flow (VRF) heat pump and heat recovery systems. The table below lists the available models.

  • Page 11: Parts

    Indirect Hot Water Storage Tank Sensor Strainer Conduit Mounting Plate Screws for Remote Controller Installation Screws for the Conduit Mounting Plate CN_EXT Cable See Accessories on pages 19-21 for a list of compatible Hydro Kit optional LG and third-party accessories (sold separately).

  • Page 12: Features

    The ARNH-K3A4 Hydro Kits can be used with outdoor units manufactured after April 2019 communicating at a baud rate of 9,600 bps (Gen4 fea- unit Engineering and Installation Manuals, or contact your LG Sales Representative. ARNH-K3A4 Hydro Kit models ARE NOT compatible with Multi V Mini, Multi V Plus II, Multi V Sync II, Multi V Space, Multi V Water II, Multi V Water Mini, single-zone, or multi-zone products.
  • Page 13 GENERAL DATA Table 4: Hydro Kit ARNH423K3A4 ARNH763K3A4 Capacity Index Heating Mode Performance Rated Capacity (Btu/h) 47,000 86,000 Entering Water Temp Range (°F) 50 - 158 50 - 158 Leaving Water Temp Range (°F) 86 - 176 86 - 176 Indoor Air Temp Setpoint Range (°F) 60 - 86 60 - 86...

  • Page 14: Electrical Data

    GENERAL DATA Electrical Data Table 5: Hydro Kit Unit Electrical Data. Power Supply Power Input (kW) Model Voltage Range Rated Amps (A) Volts Phase Heating ARNH423K3A4 18.2 187-253 208-230 ARNH763K3A4 26.2 MCA = Minimum Circuit Ampacity MOP = Maximum Overcurrent Protection Power wiring cable is field provided and must comply with the applicable local and national codes.

  • Page 15: Dimensions

    GENERAL DATA Dimensions — ARNH423K3A4 3D VIEW (Unit: Inch) Power Supply Wiring Routing Hole (Ø1-3/16) Communications Cable Routing Hole (Ø1-3/16) Vapor Piping Liquid Piping Water Outlet Water Inlet Notes: 1. Unit must be installed in compliance with the installation manual. 2.
  • Page 16 GENERAL DATA Dimensions — ARNH763K3A4 3D VIEW (Unit: Inch) Water Outlet Communications Cable Routing Hole (Ø1-3/16) Power Supply Wiring Routing Hole (Ø1-3/16) Vapor Piping Liquid Piping Water Inlet Notes: 1. Unit must be installed in compliance with the installation manual. 2.

  • Page 17: Wiring Diagram - Arnh423K3A4, Arnh763K3A4

    GENERAL DATA Wiring Diagram — ARNH423K3A4, ARNH763K3A4...

  • Page 18: Refrigerant Piping Diagram

    GENERAL DATA Refrigerant Piping Diagram Vapor Side Table 6: High Temperature Hydro Kit Piping Schematic Legend. Description Schematic Label PCB Connector Remarks Vapor Line Temperature Sensor CN_PIPE/OUT Multi V Refrigerant Cycle Liquid Line Temperature Sensor CN_PIPE/IN CN_TH3 Water Inlet Temperature Sensor (WATER IN) Water Inlet S9 and Water Outlet S10 sensors are (PHEX OUT)

  • Page 19: Accessories

    MJC57132402 Inlet Pipe exchanger entering the heat exchanger Must use LG provided communications cable. Must have contacts rated for 208-230/60/1. Table 8: LG Optional Accessories (sold separately). Accessory Model No. Connection Description Allows for group control of Hydro Group Control Cable Kit 0.82 foot cable...
  • Page 20 ACCESSORIES Table 9: Third-Party Accessories (Sold Separately). Voltage Accessory Connections Description Options Hydro Kit water circuit circulating Provides pump On / Off control Hydro Kit Circuit Water Pump TB-1,2 208-230/60/1 pump interlock (use a field-provided Interlock based on Hydro Kit control logic pilot relay) TB-7,8,10 and Harness...
  • Page 21 ACCESSORIES Table 11: LG Optional Controllers (Sold Separately). Controller / Controller Accessory Model No. LG MultiSITE™ Communications Manager PBACNBTR0A AC Smart™ 5 PACS5A000 ACP 5 PACP5A000 ACP BACnet Gateway PQNFB17C0 ® ACP LonWorks PLNWKB100 ® Simple Dry Contact Dry Contact For Third-Party Thermostat...

  • Page 22: Installing The Hydro Kit

    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 Life’s Good” is a registered trademark of LG Corp.

  • Page 23: Unpack / Inspect, Transporting / Lifting

    ARNH423K3A4 189.6 207.2 ARNH763K3A4 198.4 216.1 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 24: Transporting / Lifting, Clearance

    H-Beam Support 7-7/8 (200) Concrete Support 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 25: Foundation And Mounting Requirements, Anchoring

    • 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 26: Placing The Hydro Kit Controller

    • Keep the communications cable away from high voltage wires and electromagnetic field (EMF) producing equipment. It will result in com- munication errors and unit 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 27: Installing The Refrigerant Piping

    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 Life’s Good” is a registered trademark of LG Corp.

  • Page 28: Cutting The Refrigerant Piping / Brazing Procedure

    • 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 29: Pipe Supports

    (12) to nineteen (19) inches of the bend on the other side. ~ 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 30: Heat Recovery Unit Refrigerant Piping Connections

    • For detailed information on Pre-Commissioning, Addressing, Valve Port Detection procedures, review the installation manual for the specific outdoor unit / 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 31: Insulation

    Mark all pipes at the point where the insulation jacket ends. Remove the jacket. Install field provided insulation on the run-out and main trunk pipes first. Install the LG-provided insulation plugs on the ends of all unused header ports. Peel the adhesive glue protector slip from the insulation jacket and install the clam-shell jacket over the fitting.
  • Page 32 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 33: Installing The Condensate Piping

    • Follow all applicable local, state, and federal codes if / when insu- lating Hydro Kit condensate 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 34: Installing The Water Circuit

    • Perform chemical treatment to prevent rust. Any chemical treatment to prevent rust must be performed by a trained technician. 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 35: Antifreeze Additives

    • Periodically check antifreeze concentration to maintain the correct percentage levels. 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 36: Water Circuit Components

    13. Install a circulation pump that meets system water flow specifications detailed in the Hydro Kit Engineering Manual. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 37 Drain Separator Hydro Kit Expansion Tank 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 39 5. Slide the keeping nut down the sensor cable and thread it on the sensor well. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 40 • The indirect hot water storage tank / sensor is not necessary if the application is for only floor heating. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 41 Follow the hot water tank manufacturer's instructions on maintenance, including when to replac the anode. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 42 Hydro Kit again. (Causes of partial freezing: Insufficient heat water flow rate, water 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 43: Application Options

    Priority - Floor Heating Floor Heating 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 44 • See the Indirect Water Storage Tank Sensor Well and Sensor Installation 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 45 Two-Way Valve Operation Heating None No Control 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 46 / or death. system malfunction and damage. 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 47: Wiring

    Do not run the power wiring and the communication cable in the same conduit. It will result in 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 48: Power Wiring / Communication Cable / Terminal Connections

    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 Life’s Good” is a registered trademark of LG Corp.
  • Page 49 Failure to properly provide a National Electrical Code-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 Life’s Good” is a registered trademark of LG Corp.
  • Page 50 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 51: Connecting The Wiring And Cables

    SODU.B SODU.A IDU.B IDU.A CEN.B CEN.A DRY1 DRY2 GND 12 V Power Wiring Ground 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 52 • Never connect the Hydro Kit controller or other central controllers such as AC Smart, PDI, or the LG building management system gateway products to the communications cable between the Hydro Kit and outdoor unit. Improper communications cable connections will result in property damage and equipment malfunction.

  • Page 53: Connecting Included Hydro Kit Accessories

    • See the guidelines for installing an LG supplied dry contact in the manual that shipped with the dry contact. • When connecting a pump to the Hydro Kit system, select a suitable relay for pump capacity. Use a 208-230V pump with a maximum opera- tion current of 4A or less.
  • Page 54 3. Attach the controller installation plate to the wall or handy box using the factory-provided screws. Ensure the plate is level and securely attached to 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 55 • If Group Control is not installed properly, and the Hydro Kit DIP Switches are not set correctly for Main and Sub units, the system will 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 56 Kit and not the Sub Hydro Kit(s). Comm. 12 V Main 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 57 • The indirect hot water storage tank / sensor is not necessary if the application is for only floor heating and a tank is not included. 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 58: Connecting Optional Lg Hydro Kit Accessories

    Coil any spare cable, tie-wrap it, and leave it near the Hydro Kit. • If the distance between the Remote Temperature Sensor and the Hydro Kit is more than 50 feet (15 m), use one or more 33 foot (10 m) LG •...
  • Page 59 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 60 (LG Manufactured; Model No. PWFMDD200; Optional; Sold Separately) LG Wi-Fi Modules enable remote Hydro Kit (K3A4 models) operation for functions such as ON / OFF, operation mode, domestic hot water heating, temperature setup, weekly scheduling, etc. The Wi-Fi Module must be connected to CN-WF on the Hydro Kit PCB, and the user must download, install, register, and use the free app.
  • Page 61 To install a Dry Contact, see the Dry Contact submittals and / or installation manuals on www.lghvac.com, or contact your LG representative. • Connect the Dry Contact to Terminal CN-CC on the Hydro Kit PCB.
  • Page 62 (10 m) (see local, state, and federal requirements for AWG size). Supply Field Installation Supplied 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 63 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 64: Connecting Third-Party Accessories

    Three-Way Valve (A) (230V Output) Thermostat (Default: 208/230V AC) 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 65 • A valve that operates quickly yields noise and vibration. An appropriate valve operating time is between sixty (60) and ninety (90) seconds. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 66 Figure 62: Accessing External Pump Installer Window. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 67 5. Connect the relay to terminal block Pump (A) 1 and 2 on the High Temperature Hydro Kit. Relay 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 68 • See the Pre-Commissioning section for function codes and instructions on accessing the Installer mode that will be needed to set up Hydro Kit accessories. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 69 • Wires (L) and (H) must only be used for heating only mechanical thermostat because mechanical thermostats do not require electric power supply ( • PCB 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 70: Resistance Test

    Using a multimeter, measure the resistance across power terminals L and N • • 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 71: Controller Installation

    3. Attach the controller installation plate to the wall or handy box using the factory-provided screws. Ensure the plate is level and securely attached to 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 72 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 73: Controller Operation

    -9°F (-5°C), -7.2°F (-4°C), -5.4°F (-3°C), -3.6°F (-2°C), -1.8 (-1°C), 0 (0), 1.8°F (1°C), 3.6°F (2°C), 5.4°F (3°C), 7.2°F (4°C), 9°F (5°C) <Cold Hot > 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 74 View solar power temperature (only displayed when an installed DHW is in water heating 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 75 • Low Noise Mode may not function if the Hydro Kit is operating in defrost mode, anti-freeze mode, 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 76 Figure 82: Accessing the Wi-Fi Pairing Function. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 77 Figure 84: Accessing the Defrost Mode Screen. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 78 Figure 85: Main Menu Screen to the Lock Setting Screen. Figure 86: Lock Setting Options. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 79 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 80 • If the sleep timer operation is turned on before timer operation, the timer setting will be removed. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 81 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 82 When Stages 1 through 4 are complete, the message “Schedule is Added” and the controller returns to the view and edit schedule screen. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 83 Using a Third-Party Thermostat The term “thermostat” used in this manual refers to a third-party accessory. LG Electronics does not supply thermostats; obtain a thermostat from a third-party manufacturer. Room thermostats can be used for easy, efficient, correct and convenient control. See below and the Wiring section for information regarding third-party thermostat connections.

  • Page 84: Pre-Startup

    Air Sensor in Hydro Kit (RS3) Sensor Selection X = Off 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 85: Enter Installer Mode

    Menu name could also be different. 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 86: Functions

    * Deadband is the difference between the upper and lower limit setpoints. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 87 * Deadband is the difference between the upper and lower limit setpoints. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 88 * Deadband is the difference between the upper and lower limit setpoints. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 89 Pump Test Run function must be operated to verify water circulation is normal. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 91 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 92 • Function Setting: Low noise operation time menu is activated. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 93 Function that prioritizes the hot water supply operation (heating) for the heat pump outdoor units that cannot simultaneously supply heating and cooling. 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 94: Central Control

    I.D. settings from 0 to 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 95 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 address to each Hydro Kit(s) and indoor unit(s). Record this central control address for each component in the column provided on the Pre- commissioning Device Configuration Worksheet.
  • Page 96 10. After all Sub Hydro Kit have addresses assigned, go back to the Main Hydro Kit 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 97: Hydro Kits With Heat Recovery Units

    Group Control Branches / Ports 1,2 and 3,4 and 7,8 manual. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 98 3. If a Valve (Port) Detection procedure has not been performed, check if the Hydro Kit displays Error No. CH14, which indicates the flow switch failed to close. manual. 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 99: Finishing The Installation

    Hydro Kit, connect power, and restart for normal 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 100: Maintenance

    Do not disconnect power to the Hydro Kit during operation. First, stop Hydro Kit operation, stop outdoor unit operation, and then discon- in product malfunction and damage. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 101 • • • 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 102: Troubleshooting Error Codes

    Total = 115 for the error 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 103: Troubleshooting

    See the outdoor unit / water source unit installation / service manuals on www.lghvac.com for a complete list of error codes, the causes, and resolutions. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 104 See the outdoor unit / water source unit installation / service manuals on www.lghvac.com for a complete list of error codes, the causes, and resolutions. 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 105: Emergency 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 106 86°F (30°C) 66°F (19°C) 122°F (50°C) 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 107: Installation Checklist

    (water source) unit only. 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 108 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 109 DEVICE CONFIGURATION WORKSHEET 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 110 20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics, U.S.A., Inc. IM_HydroKit_K3A4_03_23 Air Solutions Supersedes: IM_HydroKit_K3A4_01_23 4300 North Point Parkway VRF-IM-BT-001-US_014A06 Alpharetta, Georgia 30022 VRF-IM-BT-001-US_013M20 www.lghvac.com...

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