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LG MULTI V HYDRO KIT ARNH963K2A4 Installation Manual
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LG MULTI V HYDRO KIT ARNH963K2A4 Installation Manual

Medium temperature
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HYDRO KIT MEDIUM TEMPERATURE (K2)
INSTALLATION MANUAL
42,000 to 96,000 Btu/h

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Table of Contents
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Summary of Contents for LG MULTI V HYDRO KIT ARNH963K2A4

  • Page 1 HYDRO KIT MEDIUM TEMPERATURE (K2) INSTALLATION MANUAL 42,000 to 96,000 Btu/h...
  • 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 ..........52-53 R410A Refrigerant ................12 Connecting Included Hydro Kit Accessories ......... 54-59 ..................14 Connecting Optional LG Hydro Kit Accessories ......60-64 Dimensions ..................15 Connecting Third-Party Accessories ..........65-70 Wiring Diagram .................. 16 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

    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- eration needs to be stopped.

  • 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 96 = 96,000 Electrical Ratings 3 = 208–230V/60Hz/1Ph Model K2 = Hydro Kit Water Heater Cooler Feature A = Basic Generation...

  • Page 10: Introduction

    Hydro Kits Figure 1: Hydro Kit Medium Temperature. This manual describes how to install the LG Hydro Kit, Medium Temperature units for Multi V Variable Refrigerant Flow (VRF) heat pump and heat recovery systems. The table below lists the available models. Refer to LG’s Hydro Kit Engineering Manual for complete detailed engineering data and selection procedures.

  • Page 11: Parts

    Indirect Hot Water Storage Tank Sensor Strainer Independent Power Module Conduit Mounting Plate Screws for Remote Controller Installation Screws for the Conduit Mounting Plate See Accessories on pages 18-20 for a list of compatible Hydro Kit optional LG and third-party accessories (sold separately).

  • Page 12: R410A Refrigerant

    GENERAL DATA R410A Refrigerant R410A Refrigerant R410A refrigerant has a higher operating pressure in comparison to R22 refrigerant. All piping system materials installed must have a higher resisting pressure than the materials traditionally used in R22 systems. R410A refrigerant is an azeotrope of R32 and R125, mixed at 50:50, so the ozone depletion potential (ODP) is 0. WARNING •...
  • Page 13 ARNH-K2A4 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. See pages 18 to 20 for a list of LG included, optional, and third-party accessories and controllers that can be used with the Hydro Kits. Table 3: Hydro Kit Functions.
  • Page 14 GENERAL DATA eci cations Table 4: Hydro Kit ARNH423K2A4 ARNH963K2A4 Capacity Index Cooling Mode Performance Rated Capacity (Btu/h) 42,100 95,900 Entering Water Temp Range (°F) 50 - 95 50 - 95 Leaving Water Temp Range (°F) 41 - 77 41 - 77 Indoor Air Temp Setpoint Range (°F) 64 - 86 64 - 86...

  • Page 15: Dimensions

    GENERAL DATA Dimensions — ARNH423K2A4, ARNH963K2A4 Unit: Inches (mm) 3D View 15-7/16 (392) 6-9/16 (167) 1-9/16 (40) Water 5-7/16 (138) Outlet Vapor Pipe 2-1/2 (63) Liquid Pipe Communication Cable Access Hole Ø1-3/16 (Ø30) 2-1/2 Power Supply (63) Cable Access Water Hole Ø1-3/16 Inlet 1-9/16...

  • Page 16: Wiring Diagram

    GENERAL DATA Wiring Diagram — ARNH423K2A4, ARNH963K2A4 11-19...

  • Page 17: Refrigerant Piping Diagram

    GENERAL DATA Refrigerant Piping Diagram Vapor Line Water Outlet Temp. Sensor Temp. Sensor Vapor Water Line Outlet Strainer Check Valve Bypass Flow Valve Switch Liquid Line Water Inlet Temp. Sensor Temp. Sensor Water Liquid Inlet Line Electronic Strainer Expansion Valve Plate Heat Exchanger : Cooling operation...

  • Page 18: Accessories

    Must use LG provided communications cable. *CN-TH4 connection can be used with either the Hot Water Storage Tank Sensor (LG Included Accessory; see table above) OR the Solar Heating System Interface Kit with its Must have contacts rated for 208-230/60/1.
  • Page 19 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-11,12 208-230/60/1 pump interlock (use a field-provided Interlock based on Hydro Kit control logic pilot relay) Solar heating circuit circulating pump Provides pump On / Off control...
  • Page 20 ACCESSORIES Table 10: LG Optional Controllers (Sold Separately). Controller Model No. LG MultiSITE™ Communications Manager PBACNBTR0A AC Smart™ 5 PACS5A000 ACP 5 PACP5A000 ACP LonWorks® PLNWKB100...

  • Page 21: Installing The Hydro Kit

    The unit will be damaged, will malfunction, and / or will not operate as designed if installed in any of the conditions listed. • • Due to our 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 22: Unpack / Inspect, Transporting / Lifting

    Net Weight (lbs.) Shipping Weight (lbs.) ARNH423K2A4 ARNH963K2A4 Due to our 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: Transporting / Lifting, Clearance

    (Front) 3-15/16 (100) H-Beam 7-7/8 (200) Due to our 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: Foundation And Mounting Requirements, Anchoring

    Figure 4: Foundation Requirements and Anchoring. • • Due to our 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: Placing The Hydro Kit Controller

    Hydro Kit location. • • • • • Due to our 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: 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 27: 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 28: 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 29: 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 30: 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 31 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 32: Installing The 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 33: 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 34: Antifreeze Additives

    Short Key. See the Hydro Kit DIP Switch setting pages in the Pre-Commissioning section for 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 35: 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 36 Magnetic Dirt Drain Separator 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 37 Due to our 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 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 39 • 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 40 Water In Indirect Water Storage 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 41 Refer to valve manufacturer’s installation 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 42: Water Circuit Components

    Refer to valve manufacturer’s installation 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 43: Application Options

    Priority - Floor Heating Floor Heating 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 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 Fan Coil Unit - Use Close 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 • For three-way valve and / or two-way valve control, see the Wiring section. Due to our 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: Installing The Water Circuit

    Hydro Kit and always must operate simultaneously to protect the mixing tank. If not, the mixing tank will freeze and burst, resulting in 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 48: 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 49: Power Wiring / Communication Cable / Terminal Connections 49

    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 50 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 51 Due to our 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: Connecting The Wiring And Cables

    Communication Cable 1 Phase, 208-230V, 60Hz Due to our 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 53 • 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 54: Connecting Included Hydro Kit Accessories

    Two-Way Valve (A) 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 55: Remote Controller

    • If using the back, route the communications cable through the handy box or wall, and through the large hole in the installation plate. • Use the LG-provided communications cable and the LG Hydro Kit Controller (controller and cable included with the Hydro Kit). •...
  • Page 56 Use one (1) Group Control Cable Kit for each Hydro Kit in the group (a pigtail cable is not required at the last Hydro Kit Slave unit in the group). Group control is used for operation, stop, mode, and set temperature functions; other functions are not possible. Contact an LG representative for more details.
  • Page 57 Kit and not the Slave Hydro Kit(s). Comm. 12 V 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 58 8. Replace the Hydro Kit control box cover and front panel. To Hydro Kit EEV Due to our 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 59 • 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 60: Connecting Optional Lg Hydro Kit Accessories

    4. Remove the cover of the mounting tape on the back of the sensor adheres firmly 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 61 Due to our 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 62 (LG Manufactured; Model No. PWFMDD200; Optional; Sold Separately) LG Wi-Fi Modules enable remote Hydro Kit (K2A4 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 63 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 64 Due to our 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: Connecting Third-Party Accessories

    Two-Way Valve (A) 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 66 (N): Neutral signal from PCB to three-way valve. Due to our 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 Figure 68: Connections. Pump (Main) 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 (N): Neutral signal from PCB to two-way valve. Due to our 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 2. Remove front cover of the unit and open the control box. Due to our 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 (H): Heating signal from Thermostat to 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 71: 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 72: 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 73 Due to our 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: Controller Operation

    Figure 82: Select the Temperature. -5.4 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 75 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 76 Figure 87: Turning Off Low Noise Mode. • is required. • Due to our 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 90: 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 78 Figure 92: 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 79 Figure 93: Main Menu Screen to the Lock Setting Screen. Figure 94: 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 80 Due to our 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 • 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 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 83 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 84: Controller Operation

    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 85: Pre-Commissioning

    Thermostat NOT Installed Thermostat Connection Thermostat 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 86: 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 87: 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 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 Display the operating time and to measure the life of the product. Due to our 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 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 91 Use to set the operation mode lock when the indoor unit is used only in cooling in summer, and Hydro Kit is used only in heating for winter. Due to our 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 • Hydro Kit only performs the heating priority 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 93 -5.4°F (-3°C) 5.4°F (3°C) -5.4°F (-3°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 94 22.72~23.78 (86~90) 10.57 (40) 24.04~24.30 (91~92) Due to our 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: Functions

    • 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 96: 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 97 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 98 10. After all Slave Hydro Kit have addresses assigned, go back to the Master 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 99: 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 100: Pre-Commissioning

    • 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 101: 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 102: Maintenance

    If power is disconnected when the Hydro Kit is still operating, the plate-type heat exchanger will freeze and burst, resulting 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 103: Troubleshooting

    Has the circuit breaker been tripped? display at all. Due to our 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: 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 105 Hydro kit HEX burst error. during defrost operation. 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 106: 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 107 Temperature Temperature High Temperature Low Temperature Due to our 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: Installation Checklist

    Communications cable shield is tied back, continuous between the Hydro Kits and the other indoor units Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
  • Page 109 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 110: De Ice Con Guration Worksheet

    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 111 20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics, U.S.A., Inc. Air Conditioning Technologies IM_HydroKit_K2A4_11_19 4300 North Point Parkway Alpharetta, Georgia 30022 VRF-IM-BT-001-US_013M20 www.lghvac.com...

This manual is also suitable for:

Multi v hydro kit k2 seriesMulti v hydro kit arnh423k2a4

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