Eubank 7AA1024A Installation & Operation Manual
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Eubank 7AA1024A Installation & Operation Manual

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Installation & Operation Manual
11 EER Vertical Wall-Mount Air Conditioners
7AA1024A-7AA1060A (Single Stage)
7AA2036A7AA2060A (2-Stage)
This manual may include information for options and features which may not be
included on the unit being installed. Refer to the unit data label or Model Identification
to determine which features and options this unit is equipped with.
INSTALLER: Affix the instructions on the inside of the building adjacent to the thermostat.
END USER: Retain this manual for future reference.
P.O. Box 400 • Cordele, Georgia 31010 • 156 Seedling Drive • Cordele, Georgia 31015
E-mail: eubanksales@airxcs.com • Internet: www.EubankWallMount.com
The most current version of this manual can be found at www.EubankWallMount.com.
MODELS:
IMPORTANT
Manufactured By:
Eubank, An AirX Climate Solutions Brand
(229) 273-3636 • Fax (229) 273-5154
Air Conditioner Product Manual
Vertical Wall-Mount Air Conditioners
with Front Control Box Panel
Eubank 7AA1024A-1060A & 8AA2036A-2060A I&O Manual 05/2023 Rev.5

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  • Page 1 P.O. Box 400 • Cordele, Georgia 31010 • 156 Seedling Drive • Cordele, Georgia 31015 (229) 273-3636 • Fax (229) 273-5154 E-mail: eubanksales@airxcs.com • Internet: www.EubankWallMount.com The most current version of this manual can be found at www.EubankWallMount.com. Eubank 7AA1024A-1060A & 8AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 2 How To Use This Manual This manual is intended to be a guide to the Eubank Wall Mount family of vertical air conditioners. It contains installation, troubleshooting, maintenance, warranty, and application information. The information contained in this manual is to be used by the installer as a guide only.

  • Page 3: Table Of Contents

    INSTALLER: Affix the instructions on the inside of the building adjacent to the thermostat. END USER: Retain these instructions for future reference. Table of Contents Chapter 1 Eubank Wall Mount Air Conditioner Description & Specifications General Description ..........................5 Serial Number Date Code ........................5 Air Flow, Weights and Filter Sizes ......................5 Model Identification ..........................7...
  • Page 4 CFM @ External Static Pressure ....................6 Table 4 Shipping Weights .........................6 Table 5 Ambient Temperature Operating Range ..................8 Table 6 Minimum Clearances .........................34 Table 7 Voltage Limitations ........................34 Table 8 Maximum Static Pressure ......................37 Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 5: General Description

    All units have internal disconnects (optional on 380V and 575V). Follow local codes for external disconnect requirements. Eubank wall mount air conditioners have a 0-15% manual outside air damper as standard equipment. All models are available with an optional factory installed economizer for 100% free cooling with outside air.

  • Page 6: Table 3 Cfm @ External Static Pressure

    Table 3. CFM @ External Static Pressure (Wet Coil) (IWG) MODEL Non-Economizer 7AA1024A 7AA1030A/1036A & 7AA2036A/2042A 7AA1048A/1060A & 7AA2048A/2060A With Economizer 7AA1024A 7AA1030A/1036A & 7AA2036A/2042A 7AA1048A/1060A & 7AA2048A/2060A Table 4. Shipping Weights for Eubank Wall Mount AC Units Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 7: Model Identification

    $ = Special Configuration Not Covered by + = None Model Nomenclature $ = Special Note: Not all options are available with all configurations. Contact your Eubank sales representative for configuration details and feature compatibility. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 8: General Operation

    Table 5. Ambient Temperature Operating Range Refrigerant Cycle (Cooling Mode) Eubank air conditioners use R-410A refrigerant in a conventional vapor-compression refrigeration cycle to transfer heat from air in an enclosed space to the outside. A double blower assembly blows indoor air across the evaporator.
  • Page 9 20°F (-7°C) or minus 20°F (-29°C). Please refer to Hot Gas Bypass Application Bulletin for details. Electric Reheat Dehumidification A humidity controller allows electric heat and cooling to operate simultaneously. Eubank air conditioners ® equipped with the dehumidification option allow the indoor humidity of the controlled environment to be maintained at or below a certain humidity set point.

  • Page 10: Electrical Operation

    (TXV), crankcase heater, hard start kit, and an outdoor thermostat and fan cycle switch. The fan cycle control is standard on all Eubank air conditioners and operates based upon the liquid line pressure. The outside thermostat opens whenever the outside temperature is below 50°F (10°C) and closes when the outside temperature is 50°F (10°C)

  • Page 11: Figure 1A. Typical Electrical Schematic - Non-Economizer

    TEST IBMSEL OFMSEL 0-10V 0-10V IBMSEL OFMSEL Figure 1a. Typical Electrical Schematic - Non-Economizer) Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 12: Figure 1B. Typical Electrical Schematic - W/Economizer

    TEST IBMSEL OFMSEL 0-10V 0-10V IBMSEL OFMSEL Figure 1b. Typical Electrical Schematic - w/Economizer Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 13: Figure 1C. Typical Electrical Schematic - W/Economizer (Alternate Construction)

    Figure 1c. Typical Electrical Schematic - w/Economizer (Alternate Construction) Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 14: Figure 1D. Typical Electrical Schematic - W/Economizer (Alternate Construction)

    Figure 1d. Typical Electrical Schematic - w/Economizer (Alternate Construction) Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 15: Figure 1E. Typical Electrical Schematic - W/Economizer (Alternate Construction)

    Figure 1e. Typical Electrical Schematic - w/Economizer (Alternate Construction) Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 16: Chapter 2 Electronic Control Board

    Lockout contacts are also provided along with the alarms being transferred via Modbus. This chapter provides the necessary information for installing and operating the Eubank PCB. The diagram below identifies the inputs, outputs and connections for the Eubank PCB. See I/O table. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual...

  • Page 17: Installation And Replacement

    Low Pressure Lockout Compressor Circuit 1 LP-2 Low Pressure Lockout Compressor Circuit 2 HP-1 High Pressure Lockout Compressor Circuit 1 HP-2 High Pressure Lockout Compressor Circuit 2 Low Voltage "Brownout" 16VAC or Less for 10 Minutes Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 18 Available Baud Rates 9.6 = 9600, 19 = 19200 Modbus timeout 21916 Communications Timeout in minutes Test Y, n When set to “Y” all timers are reduced for testing SW version number Displays the current version software Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 19 The selections for the SCKT Set are Y (yes) or N (no). When set to N (no, Default) the electric heat will be allowed to operate with the compressor in heat-pump mode upon a call Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 20 17. Dehum Speed: This is an independent setting for the speed at which the Indoor blower will operate upon a request for HUM (Dehumidification) via Digital Input or Modbus. The default setting for Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 21: Operation

    Operation Power The Eubank PCB requires 24 VAC to operate. When the board is sufficiently powered, the “PWR” status light on the PCB illuminates “Green.” When the power supply voltage is 16vac or less for 10 seconds the control board will de-energize all outputs. This is considered a voltage brownout (low voltage) condition and the display of the control board will show “03”...
  • Page 22 2. Normal Operating Mode describes a mode in which there are no active faults which would interrupt the operation of the system. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 23 Stage 1 Cooling (1 Staged Compressor) CC1 (Partial Capacity) Stage 2 Cooling (2 Fixed Compres-sors) Y1 + Y2 CC1 + CC2 (Full Capacity) Stage 2 Cooling (2 Staged Compres-sors) Y1 + Y2 CC1 + CC2 (Full Capacity) Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 24 Valve Output (RV) and Compressor 1 Relay Output (CC1) on the PCB. The controller provides a continuous control signal associated to the Indoor Fan Motor, that is proportional to the “Y1” speed setting on the board or via Modbus. It also outputs a request dependent Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 25 Note: Selecting N=No in configuration setting 12 will disable economizer operation. DANGER Sever hazard. The economizer contains moving parts capable of causing serious injury or death. Disconnect power before removing the covering panel. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 26: Figure 2. Enthalpy Sensor Temperature Control Points

    63°F. This setpoint can be adjusted in 1F increments from 20F to 105F in the control board configuration menu setting 14. Example of the dry bulb sensor is shown below. Note: Selecting N=No in configuration setting 12 will disable economizer operation. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 27: Figure 3. Dry Bulb Sensor

    (no staging). The Heater will remain on until the Heating setpoint is satisfied and the request is dropped. Once the heating setpoint is satisfied, the Indoor motor continues to run based Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 28 Once the Heater output is energized, the Heater comes on at full capacity (no staging). The Heater will remain on until the Heating setpoint is satisfied and the request is dropped. Once Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 29 When the liquid line temperature is below 80F the outdoor fan will shut off. A liquid line temperature above 115F will force the outdoor fan to operate at the maximum speed Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 30 6.2 Low Pressure Lockout / Freeze Protection – A10K Nominal NTC Thermistor is connected to the “LPS 1” and “LPS2” inputs of the control board for circuit 1 and circuit 2 respectively. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 31 “Emergency Ventilation” (EV-signal via Digital input or Modbus), the system will run the Indoor Motor at the “Y2” speed setting on the board or via Modbus and provide a Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 32 8.0 Smoke / Fire Shutdown 8.1 System Shutdown Contact Wiring – Add Normally Closed Dry contacts as shown for immediate shutdown of HVAC upon contacts opening. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 33: Chapter 3 Installation

    National Fire ® Protection Association Standards 90A and 90B before designing and installing duct work. The duct system must be engineered to insure sufficient air flow through the unit to prevent over-heating of Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 34: Table 6 Minimum Clearances

    Electrical Rating Designations* Nominal Voltage 208/230 208/230 Phase Minimum Voltage Maximum Voltage * Letters refer to model number code designations. Refer to page 5. Table 7. Voltage Limitations Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 35: Installation Materials

    Installation Materials Installation Kits Eubank air conditioners are shipped with one 12 Ga. "L" shaped bottom bracket. If you have not yet unpacked the unit, follow the instructions in section 2.1. All units have built-in full length mounting flanges. Therefore, use of mounting brackets is not required.

  • Page 36: Porting And Duct Work

    Attach the perimeter flange of the wall sleeve to the framed opening with appropriately sized screws. Since electric heat can be added after the unit has been installed, Eubank recommends that all installations have the 1” (25.4 mm) clearance around the wall sleeve.

  • Page 37: Fresh Air Hood Installation

    (no fresh air). To provide fresh air, remove the two screws on either side of the hood and reposition as desired. Figure 4. Fresh Air Hood Damper, Models 1024A-1060A & 2036A-2060A Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 38: Bracket Installation

    For units with electric heat, a one inch clearance is required around the duct extensions. The duct extensions must be constructed of galvanized steel with a minimum thickness of .019” as per the NFPA standards 90A & 90B. Figure 5. Eubank A/C Wall Mount Detail Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 39: Electrical Connections

    Note: Power supply service must be within allowable range (+10% - 5%) of rated voltage stamped on the unit rating plate. To operate nominal 230/208V unit at 208V, change the transformer line tap from 240V to 208V following the instruction on wiring label in unit. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 40 Continuous fan operation: For continuous indoor fan operation on single units, install a jumper between terminals 8 and 3. For continuous indoor fan operation on dual units using the older LL357D4, install jumper between 8 and 3 and remove jumper between 1 and 3. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 41: Figure 6A. Humidistat Wiring Details

    Please refer to the Product Data sheet for the Commstat 4 controller for complete instructions on installing and programming this controller. Figure 6a. Humidistat Wiring to a Eubank Air Conditioner with Reheat. Figure 6b. Thermostat Connection Diagram Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual...

  • Page 42: Figure 6C. Commstat™ 3 Hvac Controller Wiring Detail

    " l " R l i t . t l A " " 1 A " " 2 n i l n i l n i l Figure 6c. CommStat 4 Wiring Diagram Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 43: Chapter 4 Start-Up

    Important: Be sure that the crankcase heater (if used) has been energized for at least 24 hours before starting the unit(s). Double-check all electrical connections before applying power. Eubank air conditioners with scroll compressors running on 3Ø power must be checked for proper rotation during the initial start-up.

  • Page 44: Chapter 5 Troubleshooting

    Please read the Chapter 1 for basic information about the unit. Eubank air conditioners are thoroughly tested before they are shipped from the factory. Although unlikely, it is possible that a defect may escape undetected, or damage may have occurred during transportation.

  • Page 45: Compressor Troubleshooting

    NOTE: Feel the top of the compressor to see if it has overheated. If it is hot, the internal overload may be open. You may have to wait several hours for it to reset. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 46: Control Board Diagnosis

    The unit must be in the cooling mode (compressor contactor Closed) before a fault condition can occur. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 47: Chapter 6 Maintenance

    Chapter 6 Maintenance Scheduled Maintenance Eubank strongly recommends that the air conditioner be serviced a minimum of twice a year – once prior to the heating season and once prior to the cooling season. At this time the filters, evaporator coil, condenser coil, the cabinet, and condensate drains should be serviced as described below.

  • Page 48: Chapter 7 Warranty

    Marvair, ICE, Eubank Products 90 Days w/Flat Rate Labor (See Marvair, ICE, Eubank Flat Rate Labor Guidelines) 1 Year Parts 5 Years Compressor If any part of your Marvair, Inc. unit fails within 90 days of the commencement of the warranty, Marvair, Inc. will furnish without charge, EX Works, Cordele, Georgia, the required replacement part and pay for the labor to replace the part in accordance with the Marvair, Inc.

  • Page 49: Chapter 8 Start-Up Checklist

    Chapter 8 Start-Up Check List Start-Up & Commissioning Form Please complete the information on this form and return to Eubank by mail or fax. The mailing address and fax number can be found at the end of the form. A. Equipment Information...
  • Page 50 L1 & L3 = 243 Volts = 717 / 3 = 239 Average Voltage L2 & L3 = 233 Volts 239 - 233 = 6 100 x 6/239 =2.5% Voltage Unbalance Three phase units only check fan & compressor rotation. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 51 Measured Line to Line Volts L1&L2_______V. L1&L3 ________V. L2&L3______V. (L1&L2 + L1&L3 + L2&L3)/3 = Avg. Voltage = _______________ Max. Deviation from avg. voltage = ______________volts Voltage imbalance = (100 x Max. Deviation)/avg. Voltage = ___________% Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 52 Evap. Leaving Air WB Temp ________ ________ Compressor Amps (L1) ________ ________ Compressor Amps (L2) ________ ________ Compressor Amps (L3) ________ ________ Notes: _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

  • Page 53: Installation Instructions For Field Installed Electric Heaters

    (25.4 mm) clearance must extend on all sides of the supply duct for the first 3 feet (1 meter) from the unit. IMPORTANT: Eubank requires a minimum of 1" (25.4 mm) from the surface of any supply ducts to combustible material for the first 3 feet (1 meter) of the duct.
  • Page 54 15. Place the wiring diagram provided with the heater kit inside the zip lock bag which is affixed to the back side of the control box cover. 16. Replace the control box cover, the bottom front cover and the top front panel. Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...
  • Page 55 Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual 05/2023 Rev.5...

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