LG ARND153DCR4 Manual
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LG ARND153DCR4 Manual

LG ARND153DCR4 Manual

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SE
UENCE MANUAL
Q
AIR
CONDITIONER
Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring standards
by authorized personnel only.
Please retain this installation manual for future reference after reading it thoroughly.
LG SPLIT COMPACT DEDICATED OUTDOOR AIR SYSTEM(DOAS)
CO
NTROLLER
MFL71810502
Rev.00
Copyright © 2021 LG Electronics Inc. All Rights Reserved.
www.lghvac.com
www.lg.com

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Summary of Contents for LG ARND153DCR4

  • Page 1 Installation work must be performed in accordance with the national wiring standards by authorized personnel only. Please retain this installation manual for future reference after reading it thoroughly. LG SPLIT COMPACT DEDICATED OUTDOOR AIR SYSTEM(DOAS) NTROLLER www.lghvac.com www.lg.com MFL71810502 Copyright © 2021 LG Electronics Inc. All Rights Reserved. Rev.00...
  • Page 2 Introduction NOTE: Occupancy Modes Please read and save this instructions for future reference. The microprocessor controller offers two modes of Read Carefully before attempting to assemble, install, operate determining occupancy: a digital input the BMS. If in the or maintain the product described. Protect yourself and others unoccupied mode, the unit will either be shut down, by observing all safety information.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS ................................3 NAVIGATION ................................... 4 PARAMETER ADJUSTMENT ..............................5 MAIN MENU ..................................... 6 SEQUENCE OF OPERATION ..............................7 CONTROLLER OVERVIEW ..............................10 UNIT STATUS..................................14 TEMPERATURE CONTROL ..............................16 DEHUMIDIFICATION ................................17 DAMPER CONTROL................................18 FAN CONTROL ..................................19 OCCUPANCY ..................................20 ECONOMIZER ..................................20 INTERLOCK...................................21 ADVANCED ...................................21...

  • Page 4: Navigation

    NAVIGATION The function buttons for the keypad / display and the virtual keypad/ display & Web configuration described in below Figure1. Carel® Controller Keypad Figure4. Main Status Screen The Main Status screen displays current operating information. This screen includes: • Header Line: The header line alternates between the job name and unit tag.

  • Page 5: Parameter Adjustment

    Table2. Keypad Description Keypad Description Button Description Functions Press to go directly to the Main Menu from any screen. From the Main Menu, navigate to the following screens:  Unit Enable Main Menu  Unit Status  Crtl Variables  Alarm Menu The Alarm button flashes when there is an active alarm Alarm Press to view alarms...

  • Page 6: Main Menu

    Main Menu The Menu Map shows screen order when using either the Handheld Keypad or the Virtual Keypad / Display on the web interface. See the Navigation section for instructions about moving through menu screens. Table3. Main Menu...

  • Page 7: Sequence Of Operation

    SEQUENCE OF OPERATION The microprocessor controller can be configured for energy recovery, and dedicated outdoor air systems. All set points, lockouts and delays are user adjustable via the integral keypad display or web user interface GENERAL OPERATION UNIT START COMMAND UNIT/SYSTEM DISABLED COMMAND The microprocessor controller requires an input to The unit becomes disabled due to the following:...
  • Page 8 SET POINT CONTROL (Unoccupied) ECONOMIZER (if equipped) If the application requires cooling, and the outdoor air With an unoccupied recirculation damper and optional conditions are suitable for free cooling, the controller space temperature and/or humidity sensors, the unit will may enter the economizer state. This optional sequence cycle on to maintain the unoccupied space set points.
  • Page 9 SUPPLY FAN SEQUENCE ENERGY RECOVERY WHEEL SEQEUNCE equipped) The factory installed BLDC Inverter PCB is wired to the  Economizer: controller. The economizer will stop the energy Supply fan speed needs to be set during test and wheel to achieve free cooling. balance of the unit.

  • Page 10: Controller Overview

    Controller Overview Identifying Input and Output Terminals Control Board Terminal Connections • The following terminal markings are on the control See image below for general board layout. • boards and indicate: See the tables on the following pages for standard •...
  • Page 11 LG Controller (Main Module) Drawing Terminal Unit Connection Type Position Indicates Range Reference CAREL J4 Field Bus Connector RS485 (For Communication with CAREL) RS 485 communication with other Module’s CH1 RS485 BMS_Bus A&B (To Outdoor Unit) RS485 CEN_Bus A&B (To Outdoor Unit) RS485 0 –...
  • Page 12 LG Controller (UI Module) Drawing Label Unit Connection Type Position Indicates Range Reference CH1 port of Other module for communication RS485 Occupancy (Closed = Occupied) Supply Air(RTD) / Outside Air(CTD) filter Switch NO ( Closed = Dirty) Unassigned 0 – 10Vdc...
  • Page 13 LG Controller (EEV Module) #1 (Main Coil) Drawing Label Unit Connection Type Position Indicates Range Reference RS485 CH1 port of Other module for communication IDU_Bus_A&B (To Outdoor Unit) RS485 Main Coil Refrigerant temperature (Pipe In) -146-210F NTC 5k Main Coil Refrigerant temperature (Pipe out)

  • Page 14: Unit Status

    UNIT STATUS The microprocessor controller will revert to a default main menu loop. This loop includes several screens to view the operating conditions of the unit. Scroll through the menu screens by using the buttons. THE INITIAL MENU SCREEN DISPLAYS THE JOB NAME, UNIT TAG, UNIT STATUS, OUTSIDE AIR CONDITIONS, SPACE CONDITIONS AND SET POINTS Possible modes include: ...
  • Page 15 ENERGY RECOVERY WHEEL STATUS (RTD only) This screen provides overall status of the energy recovery wheel. REFRIGERANT STATUS 1 The screen displays the refrigerant In / Out Temperature of Main Coil #1 and #2 * CTD model Only display Main Coil #1 Status REFRIGERANT STATUS 2 The screen displays the refrigerant In / Out Temperature of Reheat Coil and Recovery Coil...

  • Page 16: Temperature Control

    TEMPERATURE CONTROL The controller is equipped with several menus to help guide users with altering program parameters. The following menus can be accessed by pressing the button. To enter the desired menu, press the button. The Unit Enable menu allows the user to enable and disable the unit through the Unit Enable controller.

  • Page 17: Dehumidification

    HEATING LOCKOUT This screen displays the heating lockout temperature. Heating will be disabled when outside air is above the lockout temperature (80°F). HOT START This screen displays the Hot start entering condition temperature. Fan will run at Heating mode when pipe temperature is over 86°F(adj.) if the OA temperature is below 59°F(adj.) SPACE SET POINTS DURING UNOCCUPIED MODE The controller will have separate screens for unoccupied cooling and heating set...

  • Page 18: Damper Control

    DEHUMIDIFICATION TIMERS This screen allows adjustment for delay and min on time for dehumidification mode. Times are in place to prevent short cycling between dehumidification and other control modes. COLD COIL SET POINT This screen displays the temperature set points for the cooling coil. When in dehumidification mode, the cooling ramp maintains the cold coil set point by increasing or decreasing the target pressure by refer the hysteresis value.

  • Page 19: Fan Control

    FAN CONTROL The Supply Fan Control menu allows the user to adjust exhaust control set points SUPPLY FAN SPEED The speed set point is the proportional percentage of the RPM or Direct CFM Value Min speed = 50% Speed Max speed = 100% Speed Set Point Selections: Constant Volume-The fan speed will be constant;...

  • Page 20: Occupancy

    OCCUPANCY The Occupancy menu allows the user to adjust occupancy control parameters which includes occupancy control mode and schedule. OCCUPANCY CONTROL This screen displays the current mode of operation for occupancy control. Status of the other mode option can also be found on this screen. This screen allows the user to select the source of determining occupancy.

  • Page 21: Co Interlock

    INTERLOCK The CO Interlock menu allows the user to enable the CO interlock mode and adjust control parameters which related with Fan operation INTERLOCK ENABLE This screen allows the user to Enable the CO Interlock function INTERLOCK SETTINGS This screen allows the user to adjust CO interlock mode control parameter - Setpoint: Target Space CO (ppm)

  • Page 22: Coil Control

    This screen allows to set the 3 party CO sensor installation status Note: The maximum values specified in the sensor manufacturer must be entered if equipped with 0~10Vdc Type Sensor. If LG guided sensor is installed (Honeywell, C7232A1008), do not need to set up Min/Max value.

  • Page 23: Network Settings

    NETWORK SETTINGS The Network Settings Menus allows the user to view and modify network settings. The service password (7600) is required to make changes. BACNET IP SETTING This screen will appear if the unit is set for BACnet IP and allows the user to set the device instance number and port settings.

  • Page 24: Advacned Control

    ADVACNED CONTROL The Advanced Control Menus allows the user to view and adjust Tempering, Fan, Damper, Economizer and CO2 control cycle and cycle unit. TEMPERATURE CONTROL This screen allow to change the Control cycle which is to determine the operation mode.

  • Page 25: Alarm

    ALARM The Alarms menu allows the user to view active alarms, reset active alarm (if possible), and alarm history. ACTIVE ALARMS If an alarm occurs, the button will glow red on the controller To view alarm, press the Alarm button once. This will display the most recent alarm. If the alarm cannot be cleared, the cause of the alarm has not been fixed.

  • Page 26: Settings

    SETTINGS The Settings menu allows the user to view and set Date/Time, Unit of Measure, e.PCo board address, Password, unit initialization, Application info and DOAS model settings. DATE/TIME CHANGE This screen allows the user to view and change the date/time and time zone. UNIT MEASUREMENT This screen allows the user to view and change the Unit of the measurement.

  • Page 27: Software Update

    SOFTWARE UPDATE Connecting to USB Driver The controller has built-in USB ports for connecting to USB drives. The USB drives can be used for backing up all settings and reported conditions such as alarm history and current values. Note: When uploading wrong type of file, Error could be occurred and software will stay at previous version.

  • Page 28: Web User Interface

    WEB USER INTERFACE The Web User Interface allows access to the unit controller through the building network. Reference Ctrl Variables>Advanced>Network Settings to set the IP network protocol. Once proper communication is established, the user can click on the follow tabs: Overview Unit –...
  • Page 29 This screen is displayed after signing in and consists of a menu bar, header and Main Frame main screen Menu Bar (①) This is the area that displays the menu of DOAS Web UI. The menu composition is as follows. Menu Category Menu Access rights...
  • Page 30 Displays the Unit’s overview. Overview > Unit User can adjust Unit Enable, Occupancy and Target Temperature Setpoint. Control Variables User can set the following 3 control points of DOAS Unit. ① Unit ON/OFF: User can adjust “Enabled/Disabled” of DOAS Unit. ②...
  • Page 31 Overview > Displays the control points and trend chart of outdoor unit and Live Trend Outdoor Unit ① Displays the outdoor unit information. ② Displays the brief information of Outdoor unit status as a chart. - High / Low pressure, Compressor Hz and Fan Speed (RPM) data is displayed.
  • Page 32 Trend > The user can monitor the values of specific control points during the selected period. Logged Trend The Logged Trend screen consists of the following three areas. Inquiry Control Panel (①) Trend Selection – Select Logged Trend to inquiry. Select Time Period –...
  • Page 33 Trend > User can see current values from the controller. The list of variables available is preselected based on the configuration of the unit. Live Trend The Logged Trend screen consists of the following three areas. Point Lists (①) A list of control points available for Live Trend is displayed, and user can select the control points to be displayed on the chart.
  • Page 34 Display current and cleared alarms. User can check the Alarm Code and Clear the Alarm alarms Alarms Categories are: - Device Error (Error in Main Module) - Fieldbus Communication Alarm (Communication Error with Main Module). - Al_retain (Error in the number of retain memory writings) - Al_Err_retain_write (Error in retain memory writings) Note: Alarm of “retain”...
  • Page 35 Unit Display Virtual Unit display. The user can adjust Title and date time, time zone, date format, unit of measure. Settings Software update is available via the Web UI (Service Manager, Manufacturer only). Cancel – Return the changed value to original value. Save –...
  • Page 36 Support > Display the Sequence Manual. Manual...
  • Page 37 Support > Dew A calculator with three sliders to determine the dew point, temperature, or humidity. Two of the three values are necessary to get the third. point Calculator Unit of Measure – Select temperature unit. Calculator – Select the calculation object. Temperature –...
  • Page 38 SVC > The service manager can view and adjust the control variables on Web UI Configuration Control Button (①) Factory Reset – All control variables reset to factory default. Import – Load the Saved control variables setting value Export –Save the current control variables setting value at a CSV file. Configuration (②) Unit Configuration Occupancy Control Method –...
  • Page 39 3. Function CO2 Interlocking Control – Enable/Disable the CO interlocking Function Setpoint – Target Space CO set point Fan Stop Setpoint – Space CO set point of Fan stop Hysteresis –CO Value hysteresis. Control Feedback Cycle (sec.) – Set CO2 interlocking control cycle. Fan Control Step –...
  • Page 40 6. Damper Control(if equipped) Damper Delay (sec.) – Set the delay time between damper opening and fan operation. Control Feedback Cycle (sec.) – Set the damper control cycle. Control Step – Set the damper control step. 7. Dehumidification Cold Coil Setpoint –...
  • Page 41 SVC > Manual The service manager can override the values of points associated with the unit’s actuators and sensors. Override Control Button (①) Factory Reset – Request Factory Reset to Main module. The main module initialize all set point values to factory default values.
  • Page 42 The service manager can test run the unit and check the key points associated with SVC > Test Run the unit controller. Test Run Control (①) Test Result (②) Test Run – Activates “Test Run” mode. When the test is in progress, the test result of each Remain Time –...

  • Page 43: Bacnet/Modbus Points List

    BACnet/Modbus Points List TABLE4. BACnet / Modbus Points List TABLE : BACNET / MODBUS POINTS LIST FOR DOAS UNITS BACNET MODBUS Variable Description Instance Register x 0.1 Object Type Access Index Size Number Increment Type Required InputRegister ○ I000_MainModule_SW_Version Main Module Software Version Analog Input Read_NoWrite 30001...
  • Page 44 BACNET MODBUS Variable Description Instance Register x 0.1 Object Type Access Index Size Number Increment Type Required InputRegister ODU Master Inverter#2 Heat-Sink Analog Input I9037_ODU1_Inv2IPMTemp 9037 Read_NoWrite 39038 InputRegister Temperature ○ Analog Input I9038_ODU1_Inv1InputCT ODU Master Inverter#1 Input Current (CT) 9038 Read_NoWrite 39039...

  • Page 45: Open Source Software Notice

    Open Source Software Notice OSSNotice-3095_DOAS_CarelController_1.0.0.0_200921.html This product from LG Electronics, Inc. contains the open source software detailed below. Please refer to the indicated open source licenses (as are included following this notice) for the terms and conditions of their use.
  • Page 46 additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted"...
  • Page 47 exercise of permissions under this License. 8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other...
  • Page 48 Compliance Information Supplier’s Declaration of conformity 47 CFR §2.0177 Compliance Information Trade Name: Responsible Party: LG Electronics USA, Inc. Address: 111 Sylvan Avenue, North Building Englewood Cliffs, NJ 07632 Email Lg.enveronmental@lge.com...
  • Page 49 DOAS_Sequence_01_21...
  • Page 50 Please call the installing contractor of your product, as warranty service will be provided by them.

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