LG DOAS Installation And Operation Manual
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LG DOAS Installation And Operation Manual

Dedicated outdoor air system
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DEDICATED OUTDOOR AIR SYSTEM (DOAS)
INSTALLATION AND OPERATION MANUAL
Variable Refrigerant Flow DOAS Units
ARND20BDAT2
ARND20BDAR2 (no preheat)

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Summary of Contents for LG DOAS

  • Page 1 DEDICATED OUTDOOR AIR SYSTEM (DOAS) INSTALLATION AND OPERATION MANUAL Variable Refrigerant Flow DOAS Units ARND20BDAT2 ARND20BDAR2 (no preheat)

  • Page 2: Table Of Symbols

    A list of safety precautions begins on page 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 3: Table Of Contents

    Table Of Symbols .................. 2 Wiring Diagrams .................. 18 Safety Precautions ................4 Start-Up ....................22 Location Selection ................. 8 DOAS Start-Up Checklist ..............50 General Installation Instructions ............11 Operation ....................51 Piping ....................12 Maintenance ..................52 Electrical ....................15 Maintenance Log .................

  • Page 4: Safety Precautions

    Replace all control box and panel covers after completing work. Due to our 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 5 Inadequate connections may generate heat, cause a fire and physical injury and/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 6: General Data

    Actual discharge air temperatures may vary from discharge air temperature set-point due to changes in outdoor air processing loads. Due to our 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 7 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 8: Location Selection

    Suspended Unit Mounting Details DOAS units are equipped for suspended installations. The unit should be lifted into position by supporting the unit with skid used for shipping. Carefully install the DOAS unit to prevent damage to the cabinet and ensure the unit is installed level. Additional installation provisions may be necessary depending on the job specifications.
  • Page 9 LOCATION SELECTION Mounting Details DOAS unit can be installed using either platform suspension (Figure 2) or parallel beam suspension (Figure 3) as shown below. Figure 2: Series Platform Suspension Installation Field-Provided Isolation as Required Flow Field-Provided Suspension Rods (as required).
  • Page 10 The front will always be the side opposite the filter and outdoor air opening. Due to our 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 11: General Installation Instructions

    GENERAL INSTALLATION INSTRUCTIONS Failure to observe the following instructions will result in premature failure of the DOAS and possibly void your warranty. Receiving the Unit • Check the unit for damage that may have occurred during transit. • If damage is found, note it on the carrier’s freight bill and request an inspection by the carrier’s agent immediately.

  • Page 12: Piping

    -3.50 4.50 2.25 -4.00 5.00 2.50 Due to our policy of continuous product innovation, some specifications may change without notification. LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
  • Page 13 This will allow condenser shutoff valves to open and allow refrigerant to flow to the air handling unit. • The DOAS should be charged based on the manual calculation of refrigerant charge, based on coil refrigerant volumes. • The refrigerant reheat coil is to be connected to a separate outdoor unit than the main coil outdoor unit. Ensure not to cross circuits in the reheat systems.
  • Page 14 • Use field-provided half (1/2) of an inch thick (or better) closed cell insulation. The thickness may need to be increased based on ambient conditions and local codes. • All refrigerant and condensate piping including field-provided isolation ball valves and flexible pipe connection kits provided by LG should be wrapped.

  • Page 15: Electrical

    (MOP) shown on the nameplate. • Local codes may require a disconnect switch to be within sight of the unit. The disconnect switch should not be installed on the DOAS unit. • The electrical supply can enter the unit through the bottom or the side of the controls compartment.

  • Page 16: Low Voltage Communications

    DOAS (A) terminal on the outdoor unit is connected to the 10 terminals at each AHU control terminal. Likewise, the conduc- tor connected to the DOAS (B) terminal on the outdoor unit must be connected to the 11 terminals at each AHU control terminal. Cross con- necting between the “A”...

  • Page 17: Duct 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 Life’s Good” is a registered trademark of LG Corp.

  • Page 18: Wiring Diagrams

    WIRING DIAGRAM DOAS Model ARND20BDAT2 with Preheat Due to our 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 19 WIRING DIAGRAM Due to our policy of continuous product innovation, some specifications may change without notification. LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
  • Page 20 WIRING DIAGRAM DOAS Model ARND20BDAR2 without Preheat Due to our 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 21 WIRING DIAGRAM Due to our policy of continuous product innovation, some specifications may change without notification. LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.

  • Page 22: Start-Up

    A specific air volume is delivered by the fans and electronically commutated motor (ECM). Field air flow adjustment may be required at start-up. Fan speed can be adjusted using the DOAS controls. Below is a screenshot of the DOAS Controls highlighting the fan speed adjustment from 0% to 100% Figure 11: Connecting a JENEsys AHU Controller Due to our policy of continuous product innovation, some specifications may change without notification.
  • Page 23 Linear feet of 1" liquid line 0.323 Total Trim (additional charge) Due to our 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 Main Coil I/O Board (lower) Reheat Coil I/O Board (lower) Due to our 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 Figure 14: Connecting PREMTB10U PREMTB10U PREMTB10U Due to our 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: Error Codes

    START-UP Error Codes Error Codes Below is a list of possible error codes that will appear on an LG Programmable Thermostat if the DOAS is not communicating with the outdoor unit. Table 6: Error Codes Error Code Error Error Cause...
  • Page 27 AHU controller for connection to computer. Due to our 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 3. To change the IP address for the JENEsys controller, select Internet Protocol Version 4 (TCP/IP) Figure 17: Network Connections Window Due to our policy of continuous product innovation, some specifications may change without notification. LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
  • Page 29 Figure 20: Internet Protocol Due to our 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: Accessing The Web User Interface

    Web User Interface home page. Figure 23: niagaraAX Platform Due to our policy of continuous product innovation, some specifications may change without notification. LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.

  • Page 31: Home Page

    Due to our policy of continuous product innovation, some specifications may change without notification. LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
  • Page 32 1. Click the gray Holiday bar on the calendar icon. The Holiday Special Events Editor opens. Due to our 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 5. Once the holiday or event is created, click the OK button. Due to our 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 The default duration is permanent, but any period of time can be entered for the override duration. Due to our 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 Changing the adapter settings will cause the JENEsys controller to reboot. Figure 40: IP Address Settings Due to our 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 Due to our 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 3. Click the Save button (top right corner of Setpoints page). Figure 44: Timing 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 38 Figure 47: Source and Msg Text Due to our 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 Figure 50: Acknowledging an 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 Life’s Good” is a registered trademark of LG Corp.
  • Page 40 Figure 52: Web Interface Page IO Fault Due to our 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 • In order for the networks to operate properly they need to be enabled through their property sheets at system start-up. Due to our 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 5. Select the appropriate Baud Rate from the drop-down menu. Due to our 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 Broadcast Distribution Table with entries from the known BBMD. Due to our 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 6. Click the Save button. Figure 58: Modbus Properties Due to our 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 • Select Service Pin from the Actions menu. Figure 60: Service Pin Due to our 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 17. Click the Save button. Figure 62:Lon Device Data Properties Due to our 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: Before You Begin

    24 VAC power constant for the first 5 minutes of start up. Due to our 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 8. Check temperature readings with a temperature sensor to ensure they are reading the actual 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 49 Enable setpoint to Disabled until the unit is ready to operate. The system enable works as a software shutdown to the unit. Due to our policy of continuous product innovation, some specifications may change without notification. LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.

  • Page 50: Doas Start-Up Checklist

    Ductwork All seams sealed - no air leaks. Ductwork is properly sized considering the available external static pressure rating of the DOAS unit fan. No kinks present in the flexible ductwork. Ductwork is properly supported. Ductwork balancing dampers have been installed and are correctly adjusted or open.

  • Page 51: 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 52: Maintenance

    The arrow on the replacement filters must point towards the blower. Due to our 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: Maintenance Log

    This log must be kept with the unit. It is the responsibility of the owner and/or maintenance/service contractor to document any service, repair or adjustments. LG Air Conditioning Support is available to advise and provide technical support for proper operation and replacement parts.

  • Page 55: Who To Call For Assistance

    WHO TO CALL FOR ASSISTANCE Freight Damage and Unit Replacements....................Your LG Manufacturer Representative Missing Parts............................Your LG Manufacturer Representative Received Wrong DOAS Unit Model......................Your LG Manufacturer Representative Installation, Startup, and Commissioning Technical Assistance....................1-888-865-3026...
  • Page 56 LG Electronics Commercial Products Support LG Electronics 1-888-865-3026 USA Commercial Air Conditioning Division 11405 Old Roswell Road Follow the prompts for commercial A/C products. Alpharetta, Georgia 30009 www.lghvac.com IM-DOAS-06-14A Supersedes: IM-DOAS-06-14...

This manual is also suitable for:

Arnd20bdat2Arnd20bdar2

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