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LG AR-DR11-08A Installation And Operation Manual

Rooftop dedicated outdoor air systems doas 650 to 12,000 cfm
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ROOFTOP DEDICATED
OUTDOOR AIR SYSTEMS (DOAS)
INSTALLATION AND OPERATION MANUAL
Base Rooftop DOAS
650 to 12,000 CFM
Energy Recovery Wheel Rooftop DOAS
650 to 18,000 CFM

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Summary of Contents for LG AR-DR11-08A

  • Page 1 ROOFTOP DEDICATED OUTDOOR AIR SYSTEMS (DOAS) INSTALLATION AND OPERATION MANUAL Base Rooftop DOAS 650 to 12,000 CFM Energy Recovery Wheel Rooftop DOAS 650 to 18,000 CFM...
  • Page 2 4. For more technical materials such as submittals, catalogs, engineering manuals, and forms, 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

    Troubleshooting ......................................... 106-110 Maintenance .........................................111-114 Startup Documentation .......................................114-118 Due to our 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

    Due to our 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 DOAS fan assembly. Doing so may cause product 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 Failure to carefully read and follow all instructions in this manual can result in equipment malfunction or property 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” is a registered trademark of LG Corp.
  • Page 7 Do not allow water, dirt, or animals to enter the unit. There is risk of unit failure. Due to our 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: Unit Nomenclature

    20 = 20 Tons Series A = First Series Due to our 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: Product Overview

    Supply Fan Return Air Electrical Panel Supply Air Area Due to our 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 Other components may be present depending on the chosen 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” is a registered trademark of LG Corp.

  • Page 11: General Data

    (40 CFR Part 82, Subpart F) under section 608 of CAA. Due to our 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 (40 CFR Part 82, Subpart F) under section 608 of CAA. Due to our 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 (40 CFR Part 82, Subpart F) under section 608 of CAA. Due to our 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 (40 CFR Part 82, Subpart F) under section 608 of CAA. Due to our 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: Refrigerant Safety

    Verify the maximum refrigerant concentration level for spaces served by DOAS meets the concentration limit for the application. Due to our 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: Installation

    (6) lugs. eight (8) lugs. Due to our 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: Clearances

    Figure 5: AR-DE Models (11-XX, 21-XX, 31-XX Chassis) Clearance. Figure 6: AR-DE Models (35-XX Chassis) Clearance. Due to our 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: Installation Location

    Visually inspect the unit before unloading and note any damage in writing on the delivery receipt. If the unit is damaged during shipping, the customer shall immediately file a claim with the shipping company and notify LG. Photograph the damage if possible. Verify that all pieces listed on the bill of lading have been received.
  • Page 19 26 in. 50.5 in. 26 in. 124.75 in. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 20 43.75 in. 54 in. 24.5 in. 175.75 in. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 21 39 in. 36 in. 172.75 in. 199.75 in. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 22 67 in. 110 in. 254.75 in. 297.75 in. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 23: Outdoor Air Hood Assembly

    The sheet metal screws are included with the hood parts. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 24 Due to our 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 25 13. Install Hood End. Due to our 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 Figure 24: Install Screen Support Flashing (Step 13). Centers (Step 15). 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 27: Intake Hood W/Aluminum Filter Assembly

    8425 (4) 2310 (4) 2310 (2) and 4864 (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 28 (Step 4B). the Unit (Step 5). Airflow Direction Due to our 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: Duct And Condensate Drain Connections

    NFPA Standard 90A. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 30: Access Holes

    Figure 38: AR-DR / AR-DE 35-XX Chassis Access Holes. 35-XX Cabinet 31-XX Cabinet Due to our 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: Electrical Connections

    Due to our 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 Table 15: Space CO Sensor Terminations. Sensor Terminal Strip TB3 OUT1 Due to our 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 Heater Connection And Startup

    Combustion air inlet cover must be extended and opened prior to starting the gas heat. Inadequate ventilation is a health hazard that may result in 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 34 Figure 42: AR-DR / AR-DE 1 35-XX Chassis Exterior Gas Connections. Due to our 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 Due to our 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 13. At the end of the pre-purge the direct spark will be energized and gas valve will open. 14. Burners will ignite. Due to our 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 Figure 46: V8944 Gas 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” is a registered trademark of LG Corp.
  • Page 38 2. Turn OFF electrical supply at unit disconnect. 3. Turn off gas supply 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” is a registered trademark of LG Corp.

  • Page 39: Refrigeration System Startup

    When adding refrigerant charge, only use R410A, otherwise the product will be damaged and 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” is a registered trademark of LG Corp.
  • Page 40 Digital Scroll Compressor Controllers Figure 49: Digital Scroll Controllers. Due to our 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 Flash Code 7 - Reserved for future use. Due to our 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 Figure 50: Refrigerant Circuit Component Locations in DOAS Chassis. Due to our 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: Energy Recovery Wheel (Ar-De Models)

    Rinse the dirty solution from the wheel, and remove excess water before reinstalling. Due to our 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 Figure 53: Unlocking and Opening the Segment Retaining Bracket (Step 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” is a registered trademark of LG Corp.
  • Page 45 Figure 56: Close and Latch Segment Retaining Brackets (Step 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 46 No measurable change of perfor- mance will occur. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
  • Page 47 6. Install the pulley and secure the set screw to the flat surface of the drive shaft. Due to our 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: Controller

    Expansion Board (Carel c.pCO Board) (Carel c.pCOe Board) Due to our 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 19.2 K MODBUS On Exp 6 19.2 K MODBUS On Due to our 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 • See the wiring schematics shipped with the unit for factory-configured terminal connection points for all units. Figure 71: Main Control Board Layout. Due to our 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 Radiometric transducers. Chilled water or hot water units 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” is a registered trademark of LG Corp.
  • Page 52 Units with inverter scroll compressor. Heat pump 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” is a registered trademark of LG Corp.
  • Page 53 3 enable Preheat enable Closed = start heater Unassigned Due to our 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 Position Indicates Unassigned Unassigned Unassigned Unassigned Unassigned Unassigned Unassigned Due to our 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 CAREL ExV (brown) CAREL ExV (yellow) CAREL ExV (white) Due to our 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 2. Sequentially click two keypad buttons (Main, Alarm, Escape, Up, Enter, Down). Due to our 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 Air Currents Economizing Rain Dehumidifying Vapor Spray Humidifying Due to our 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 Service Info Alarm Management Shutdown Alarms General Alarms Due to our 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 8. Cycle power to the controller. Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 60: Ac Smart Setup

    • For AR-DR DOAS models: CAREL Device I.D. = 18 (Decimal) and AC Smart Address = 12 (Hex) Figure 81: Device I.D. 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” is a registered trademark of LG Corp.
  • Page 61 Figure 87: Clicking “Send All” to Finish Adding Devices (Step 6). Due to our 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 Figure 90: Selecting “View Details” (Step 9). Figure 91: Selecting “Info” (Step 10). Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 63: Sequences Of Operation

    This requires the unit to be re-enabled manually after the shutdown alarm condition is cleared. Due to our 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 • Heat pump defrost • Winter ramp Due to our 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 If the unit is a heat pump, the supply fan is always used. Due to our 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 • If both space and return temperature sensors are present, the remaining sensor is used during a failure. Due to our 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 • The humidification/dehumidification mode switch delay has expired; • There is a call for dehumidification. Due to our 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 2. Fixed Capacity: The preheat call occurs when it is available. Due to our 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 69 Due to our 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 This alarm remains active after the alarm condition clears for the duration of the envelope alarm lockout delay or until the alarm is manually reset. Due to our 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 • BMS-communicated point by disabling a pump request. Due to our 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 Supply Fan Modulation: In heating mode, if the supply air temperature is less than 60°F, the supply fan speed decreases to maintain 60°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 73 • The outside air temperature increases; or • The outside humidity decreases. Due to our 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 • From the Alarms menu go to Reset Alarms; or • Reset all alarms via the BMS. Due to our 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: Set-Points Data Tables

    100.0°F Set-point availability varies based on unit configuration. Due to our 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 Set-point availability varies based on unit configuration. Due to our 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 5,000 ppm Set-point availability varies based on unit configuration. Due to our 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 999999 cfmCFM Set-point availability varies based on unit configuration. Due to our 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 Enabled (X) Set-point availability varies based on unit configuration. Due to our 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 Current State Set-point availability varies based on unit configuration. Due to our 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 81 120 sec. Set-point availability varies based on unit configuration. Due to our 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: Network Settings Data Tables

    Save (X) Set-point availability varies based on unit configuration. Due to our 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 83 Enabled (X) Set-point availability varies based on unit configuration. Due to our 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 None, ASHP, WSHP Set-point availability varies based on unit configuration. Due to our 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 85 Hidden (Factory Password) Set-point availability varies based on unit configuration. Due to our 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 86 Enabled (X) Set-point availability varies based on unit configuration. Due to our 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 87: Alarm Data

    Mixed Air RH Sensor Value Not Valid Auto Informational Due to our 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 88 Sensor Value Not Valid Auto Disable Hot Deck 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” is a registered trademark of LG Corp.
  • Page 89 Auto until Lockout 3x in 1 hr Disable Inverter Circuit Only with Inverter Scroll Due to our 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 90 Disable HP Heating Reset EVD Error Unexpected Position Auto Due to our 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 91: Bacnet And Modbus Points

    ReadCOV_NoWrite 0.1 30470 Input Analog_Input Temperature Circuit B Due to our 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 92 0.1 40046 Holding Commandable to BMS Due to our 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 93 ReadCOV_ Damper_Minimum_ 40092 Holding Minimum Set-point Commandable Setpoint Due to our 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 94 Condenser 2 Analog ReadCOV_NoWrite 0.1 30484 Input Output Output Due to our 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 95 ReadCOV_ Occupancy_Digital_Input Occupied Unoccupied 10102 Discrete Status NoWrite Due to our 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 96 Allows the BMS to control Read_ Local Coil OAD position Commandable Due to our 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 97 HGRH_Purging 10023 Discrete reheat value is purging NoWrite Due to our 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 98 Alarm Normal ReadCOV_NoWrite 10338 Discrete Sensor_Alarm. Active Alarm Due to our 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 99 Alarm Normal ReadCOV_NoWrite 10483 Discrete Alarm.Active Sensor Alarm Due to our 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 100 EVD Configuration Al_ConfigErr_EVD_1.Active Alarm Normal ReadCOV_NoWrite 10540 Discrete Alarm Due to our 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 101 Temperature Alarm Normal ReadCOV_NoWrite 10567 Discrete Sensor Alarm Due to our 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 102 Most recent alarm. See LatestAlm ReadCOV_NoWrite 30194 Input Alarm Table. Due to our 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 103: Unit Status Modes

    Shutdown Alarm Overrides Active Emergency Pressurization Expansion Offline Due to our 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 104: Lontalk Points

    Furnace 2 Stage 1 Digital Output 0=Off 1=On Due to our 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 105 Unoccupied Cooling Set-point UnocHeatSetpt temp_p (105) Unoccupied Heating Set-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 106: Troubleshooting

    Line voltage too low. step-up transformer may be 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” is a registered trademark of LG Corp.
  • Page 107 Check for leaks in duct work. obstructions. Check the fins on coils. Due to our 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 108 Low airflow, high static pressure. System Check for obstruction in 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 109 LCD if it has tripped three (3) times in one 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” is a registered trademark of LG Corp.
  • Page 110 Due to our 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 111: Maintenance

    Winterize the drain trap each year before the drain piping or drain pan is exposed to freezing air. Return the trap to operating position before the cooling season starts. Due to our 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 112 Keep grease clean. Mixing dissimilar greases is not recommended and may cause product 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 113 Aluminum filters can be removed and cleaned using high-pressure 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” is a registered trademark of LG Corp.

  • Page 114: Startup Documentation

    See the following pages for Job Information and Startup Forms, and Startup Checklists. Complete all forms for each DOAS unit and return to LG through “B2B GERP”. Due to our 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 115 Job Information Sheet Date: __________________ Jobsite Project Name: ___________________________________________________________ Jobsite Address: _________________________________________________________ City: ______________________ State: ______________ Zip: ____________________ Startup Contractor Company Name: _________________________________________________________ Address: ______________________________________________________________ City: ______________________ State: ______________ Zip: ____________________ Phone: _____________________ Startup Technician Name (Print): ___________________________________________________________ Phone: __________________________ E-Mail: _______________________________ Unit Information Sales Order: _______________________ Tag/ Mark: ____________________________ Model Number: __________________ Serial Number: ____________________________...
  • Page 116 Pre-Startup Checklist The following items should be checked on all units before startup. Exterior and Interior Inspection Fans and Motors Unit is inspected for rigging or shipping damage. Fan inlets and outlets are unobstructed. Report any damage to the installing contractor or shipping Fasteners, setscrews, and locking collars on the fan are company and to the manufacturer.
  • Page 117 Startup Form Before starting the unit, ensure that all applicable items in the Pre-Startup Checklist have been completed and verified. Compressor crankcase heaters must be energized for a minimum of twelve (12) hours before operating the unit. Electrical Unit Voltage: _____________________ Line Voltage: ____________________________ L1 - L2: _________________ L2 - L3:________________L3 - L1: __________________ Supply and Exhaust Fans Running Amps...
  • Page 118 Cooling Parameter Test C1 Test C2 Test C3 Test C4* Circuit A 100% 100% Circuit B 100% Hot Gas Reheat 100% Outdoor Air Temp. (°F) Evaporator Coil Leaving Air Temp. (°F) Discharge Air Temp. (°F) Subcooling (°F) Expected = 10 to 15°F Expected = 2 to 10°F Expected = 10 to 15°F Superheat (°F) Expected = 10-20°F Expected = 10-30°F...
  • Page 119 LG Electronics, U.S.A., Inc. Commercial Air Conditioning Division IM_LG_Rooftop_DOAS_02_19 4300 North Point Parkway Supersedes: IM_LG_Rooftop_DOAS_11_17 Alpharetta, Georgia 30022 IM_LG_Rooftop_DOAS_07_17 www.lghvac.com...

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