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Installation & Operation Manual
Vertical Wall-Mount Heat Pumps
Single Stage Models:
EAA1020H • EAA1024H • EAA1030H
EAA1036H • EAA1042H • EAA1048H
EAA1060H • EGA1072H
2-Stage Models:
EAA2024H • EAA2030H • EAA2036H
EAA2042 •EAA2048H • EAA2060H
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.
IMPORTANT
Manufactured By:
Eubank, An AirX Climate Solutions Brand
(229) 273-3636 • Fax (229) 273-5154
Heat Pump Product Manual
Vertical Wall-Mount Heat Pumps
Eubank Wall Mount Heat Pump I&O Manual
05/2023 Rev.2
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Table of Contents
Troubleshooting
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Summary of Contents for ACS Eubank EAA1060H
- Page 1 Heat Pump Product Manual Vertical Wall-Mount Heat Pumps Installation & Operation Manual Vertical Wall-Mount Heat Pumps Single Stage Models: EAA1020H • EAA1024H • EAA1030H EAA1036H • EAA1042H • EAA1048H EAA1060H • EGA1072H 2-Stage Models: EAA2024H • EAA2030H • EAA2036H EAA2042 •EAA2048H • EAA2060H IMPORTANT This manual may include information for options and features which may not be included on the unit being installed.
- Page 2 How To Use This Manual This manual is intended to be a comprehensive guide to the installation of the Eubank EAA family of vertical packaged ® heat pumps. 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. This manual does not supersede or circumvent any applicable national or local codes.
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Page 3: Table Of Contents
WARNING • If the information in these instructions are not followed exactly, a fire may result causing property damage, personal injury or loss of life. • Read all instructions carefully prior to beginning the installation. Do not begin installation if you do not understand any of the instructions. •... - Page 4 Chapter 6 - Periodic Maintenance Requirements 6.1 Scheduled Maintenance ......................... 38 Chapter 7 - Warranty Information 7.1 Standard Product Warranty ........................39 Appendix A - Installation Instructions of Field Installed Electric Heat ............40 Appendix B - Heat Pump Start-Up - Commissioning Checklist ..............43 igures Figure 1 PC Control Board ........................
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Page 5: Chapter 1 - Description & Specifications
Chapter 1 Description and Specifications 1.1 General Description Eubank Wall Mount Heat Pumps are high efficiency, vertical wall mounted heat pumps that provide ® heating, cooling and ventilation for a wide range of applications. Single stage nominal cooling capacities range from 20,000 to 60,000 & 72,000 BTUH. 2-Stage units have nominal cooling capacities from 24,000 to 60,000 BTUH. -
Page 6: Model Identification
1.3 Model Identification Example E Position 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 E = Eubank Wall Mount 1 = Top Supply/Bottom Return Unit Designation/Family 18 Air Flow S = Stock Unit $ = Special Energy Efficiency Ratio... -
Page 7: General Operation
Model Weight Base w/Economizer w/3 Phase w/Economizer & 3 Phase EAA1020H/EAA1024H/EAA2024H Lbs (Kg) 337 (153) 357 (162) 356 (161) 376 (171) EAA1030H/EAA1036H/EAA2030H/EAA2036H Lbs (Kg) 397 (180) 419 (190) 416 (189) 438 (199) EAA1042H/EAA1048H/EAA2042H/EAA2048H Lbs (Kg) 453 (205) 476 (216) 491 (223) 514 (233) EAA1060H/EAA2060H Lbs (Kg) - Page 8 Ventilation Options Optional - Ventilation Configuration C: The economizer is a regulated damper system with controls. The damper regulates the circulation of outside air into the enclosure (when the outdoor air conditions are suitable) to reduce the need for mechanical cooling, save energy, and extend compressor life. Depending upon the options selected, the damper responds to the enthalpy of the outdoor air.
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Page 9: Options
Quality Components The GreenWheel module consists of a desiccant wheel, two blowers and the drive motor and belt. The ® two blowers simultaneously pull fresh air from outside and exhaust air from the classroom through the rotating wheel. Two variable speed blowers ensure that up to 450 CFM of outside air can be brought into the room and the indoor air is properly exhausted. - Page 10 Chapter 2 Electronic Control Board Introduction WARNING Failure to observe the instructions contained in this document may result in personal injury and/or property damage and may void the warranty. Read this manual before installing, replacing or using this product. Eubank’s proprietary Printed Circuit Board (PCB) sets the standard for the industry in flexibility, reliability and performance.
- Page 11 Item Description Economizer Actuator Output 2-10 VDC Outdoor Motor Control Output 0-10 VDC or PWM Indoor Motor Control Output 0-10 VDC or PWM Enthalpy Sensor Signal Input 4-20mA Outdoor Sensor Signal 10K NTC (Heat Pumps) / Dry Bulb Sensor Signal Input 10K NTC (Systems Equipped with Dry Bulb Economizer) Supply Air Sensor Signal Input 10K NTC (Systems Equipped with Economizer) Defrost Sensor Signal Input 10k NTC (Heat Pumps Only)
- Page 12 2.3.1 – Programming Menu Configuration 1. To Enter Programming Mode: • Press and hold the Menu button for 5 seconds until P-01 is displayed. 2. While in Programming Mode main menu: • Press the Menu button to enter the displayed parameter menu. •...
- Page 13 Configuration Menu Details 1. AC/HP Select: This setting allows the PCB to be configured for AC (air-conditioner) or HP (heat- pump). The system type is configured at the factory during production testing for the appropriate system type. The default system type is AC. 2.
- Page 14 for W2 (auxiliary / emergency heat). When the SCKT Set is set to Y (yes) the electric heat will not be allowed to operate with the compressor in the heat-pump mode. When set to Y (yes) and upon a request for W2 (auxiliary / emergency heat) the compressor will shut off and the electric heat will operate.
- Page 15 the Dehum speed is 80% of maximum speed. The speed may be adjusted from 60-100% in 1% increments to meet desired airflow requirements. 18. DS Calibration: This setting is used to calibrate the defrost sensor from 0 to -18F. 19. SAS Calibration: This setting is used to calibrate the supply air sensor from 0 to -18F. 20.
- Page 16 Indoor Blower Operation 1.1 G - Indoor Blower Only 1.2 Y1 - Indoor Blower Operation 1.3 Y2 - Indoor Blower Operation 1.4 W2 – Indoor Blower Operation 1.5 HUM – Indoor Blower Operation Cooling Operation AC / HP 2.1 Mechanical Cooling (AC systems) 2.1.1 Partial Capacity 2.1.2 Full Capacity 2.2 Mechanical Cooling (HP systems)
- Page 17 1.0 Indoor Blower Operation The speed at which the indoor blower will operate is based on the discrete operational inputs that have 24vac applied. These inputs are listed below. 1.1 G Input – A request for Fan Only (independent G-signal via Digital input or Modbus), results in the indoor motor turning “ON”...
- Page 18 2.1 Mechanical Cooling (AC systems) – This section will describe the sequence of operation which takes place during Direct Expansion (DX) cooling from a control standpoint. Note: The system type must be configured for “AC” operation in setting 1 of the configuration menu of the control board for proper AC system operation.
- Page 19 to the “Y1” speed setting on the board or via Modbus. It also outputs a request dependent (based on FCC IN) control signal for the Outdoor Fan Motor (Only applicable to ECM motors). In Stage 1 Cooling operation, the compressor operates at partial capacity and the indoor fan remains on continuously but the outdoor fan modulates based on liquid line temperature.
- Page 20 Enthalpy Setpoint is Setting 14 in control board configuration menu. Options A= 73ºF B= 70ºF C= 67ºF D= 63ºF E= 55ºF All settings are @ 50%Rh Figure 2. Enthalpy Sensor & Temperature Control Points Enthalpy Operation On a call for cooling from the wall-mounted thermostat, if outdoor conditions are suitable, the sensor will open the damper and admit outside air (i.e., economizer free cooling).
- Page 21 Figure 3. Dry Bulb Sensor On a call for cooling from the wall-mounted thermostat, if outdoor conditions are suitable, the sensor will open the damper and admit outside air (i.e., economizer free cooling). If the outdoor ambient is too hot (dry bulb sensor only), the sensor will place the actuator in the closed or minimum open position and activate mechanical cooling.
- Page 22 on the fan purge timer setpoint (default 90 seconds) selected in setting 3 of the configuration menu of the control board. Note: A request for Cooling and Heating at the same time is not allowed and control board will not allow the electric heat to operate. 4.2 Heat Pump Heating Operation –...
- Page 23 the heating setpoint is satisfied, the Indoor motor continues to run based on the fan purge timer setpoint (default 90 seconds) selected in setting 3 of the configuration menu of the control board. When the system is operating in Heap Pump mode the electric heat is considered as supplemental heat and will only be allowed under certain conditions due to additional features that may be used.
- Page 24 set on the control board for setting 7 in the configuration menu. The outdoor fan will speed up and slow down between liquid line temperature of 80F and 115F. Systems with (PSC Outdoor Motors) utilizes a Fan Cycle Switch which closes at 400 PSIG to energize the OFR (outdoor fan relay) to start the outdoor fan which runs until the switch reopens (at 290 PSIG).
- Page 25 The sensor is secured to the common suction line of the system to monitor the suction line temperature. This condition describes the abnormal fall in Suction Line Temperature below 9ºF. This fault will only be active when the Low-Pressure Sensor detects suction line temperatures below 9ºF during a request for Cooling / Heat pump heating.
- Page 26 10vdc signal from the ECO output of the control board to drive the motorized damper fully open. Note: The compressor and electric heat WILL NOT operate while in the emergency ventilation mode. 7.3 Forced Cooling (economizer equipped systems) – During economizer cooling, if a request for “Forced Cooling”...
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Page 27: Chapter 2 - Installation
Chapter 3 Installation WARNING Failure to observe and follow Warnings and Cautions and these Instructions could result in death, bodily injury or property damage. Read this manual and follow its instructions and adhere to all Cautions and Warnings in the manual and on the Eubank unit. -
Page 28: Installation Materials
5. Airflow Requirements: Note the minimum CFM requirements (section 2.4). Keep duct lengths as short as possible. Do not obstruct airflow through the unit. Applications using duct work should be designed and installed in accordance with all applicable safety codes and standards. Eubank strongly recommends referring to the current edition of the National Fire ®... - Page 29 Standard Kit Components 1. One 12 Ga. “L”-shaped bottom bracket Accessories: The package may include other factory-supplied items (optional ) listed on this and the following page: PART # DESCRIPTION 50107 Digital thermostat. 2 stage heat, 2 stage cool. 7 day programmable. Fan switch: Auto & On. Auto-change over.
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Page 30: Porting And Duct Work
(10) 3/8" mounting bolts or lag screws for side brackets and anchors, if required for side brackets. (20) 3/8" washers (10) 3/8" hex nuts 3/8" x 2-1/2" lag screws for bottom bracket • Silicone Sealer to seal around cracks and openings •... -
Page 31: Fresh Air Hood Adjustment
Ducting Extensions should be cut flush with the inside wall for applications without duct work. Applications using duct work should be designed and installed in accordance with all applicable safety codes and standards. Eubank strongly recommends referring to the current edition of the National Fire ®... -
Page 32: Bracket Installation
3.6 Bottom Bracket Installation 1. Remove and discard the 4 x 4 shipping boards attached to the base of the unit. 2. All heat pump models have built-in mounting flanges. See Figure 6. 3. Refer to Figure 6. Attach the bottom support bracket to the wall using appropriate 3/8" diameter hardware. -
Page 33: Electrical Connections
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. 9. Check the fit of each sleeve to its mating flange for possible air leaks. Apply silicone sealer to close any gaps. - Page 34 3. Scroll compressors, like several other types of compressors, will only compress in one rotational direction. The direction of rotation is not an issue with single-phase compressors since they will always start and run in the proper direction. However, three phase compressors will rotate in either direction depending upon phasing of power.
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Page 35: Figure 5A Humidity Control Wiring Detail
Figure 5a - Humidity Control Wiring Detail - Heat Pumps Figure 5b - Thermostat Connection Diagram Eubank Wall Mount Heat Pump I&O Manual 05/2023 Rev.2... -
Page 36: Chapter 3 - Start-Up
Chapter 4 Startup IMPORTANT If the heat pump unit has a crankcase heater be sure that the crankcase heater has been energized for at least 24 hours prior to start-up of the unit. Double check all electrical connections before applying power. Various thermostats can be used to control the heat pump. -
Page 37: Check-Out Of Heating Cycle
Note: To check the system operation under different ambient conditions, the air temperature and enthalpy sensors must be "tricked". When outdoor ambient conditions are higher than the control setting, a component aerosol cooler may be sprayed directly into the enthalpy sensor to simulate low enthalpy conditions, causing the economizer damper to open. - Page 38 Wires from temperature sensor mounted in supply air. Figure 6 - Temperature Sensor Wires 2. Turn the unit on and the Hot Gas Reheat is operating. 3. Set the digital VOM for DC milliamp voltage. The milliamp voltage shown on the meter’s display corresponds to the desired air temperature (ºF).
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Page 39: Ventilation System Set Up
4.4 Ventilation System Set-Up: Manual Fresh Air System (Configuration N). This is the standard ventilation system in Eubank heat pumps. Fresh air ventilation by means of a damper can provide up to 15% of rated air flow of outside air. The damper has four positions corresponding to 0, 5, 10 and 15% of rated air flow of outside air. The damper only opens when the indoor fan is operating. -
Page 40: Figure 9 Damper Air Path
Figure 9 - Damper Air Path b. "A" is the quantity of outside air expressed as a percentage of "C". For example, if the supply air is 1,220 CFM and 300 CFM of outside air is required, "A" is 25% (300 CFM/1,220 CFM). Measure the temperature of the outside air. - Page 41 a. Using best industry standards and practices, measure the fresh air that is being brought into the classroom. For units with one speed controller (std.), adjust the speed of the intake and exhaust blowers by inserting a slotted screw driver into the opening on the controller. The speed controller is located on the lower right side of the GreenWheel ERV assembly.
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Page 42: Chapter 4 - Troubleshooting
Chapter 5 Troubleshooting 5.1 Overview A comprehensive understanding of the operation of the Eubank Heat Pump is a prerequisite to ® troubleshooting. Please read the Chapter 1 for basic information about the unit. Eubank Heat Pumps are thoroughly tested before they are shipped from the factory. However, it is possible that a defect may escape undetected, or damage may have occurred during transportation. -
Page 43: Failure Symptoms Guide
5.2 Failure Symptoms Guide PROBLEM/SYMPTOM LIKELY CAUSE(S) CORRECTION A. Unit does not run. 1. Power supply problem. 1. Check power supply for adequate phase and voltage. Check wiring to unit and external breakers or fuses. NOTE: An internal anti-short-cycle timer will prevent the unit 2. -
Page 44: Compressor Troubleshooting
PROBLEM/SYMPTOM LIKELY CAUSE(S) CORRECTION E. Water on floor near unit. 1. Obstruction in condensate line. 1. Check for clog or restriction. 2. Obstruction or leak in condensate 2. Check pan for leak or blockage. pan. 3. Unit is not level. 3. -
Page 45: Electric Heat Control
5.4 Electric Heat Controls Figure 10 - Typical Configuration for Single Element Heater The electric heater assembly can have up to three individual heating elements. Each individual heating element is protected against overheating by its own dual function thermal cut-out switch. Additionally, a separate single function thermal cut-out switch protects the entire heater assembly. -
Page 46: Chapter 5 - Electrical Schematics
Chapter 6 Electrical Schematics 6.1 Electrical Schematics The compressor and condenser fan are energized with a contactor controlled by a 24 VAC pilot signal. The condenser (outside fan) motor is energized by the same contactor. However, the motor is cycled on and off by the low ambient control (see low ambient control 1.5). - Page 47 Figure 11a - Typical 1ø Electrical Schematic Diagram Heat Pump (Models EAA) with Manual Outside Air Damper Eubank Wall Mount Heat Pump I&O Manual 05/2023 Rev.2...
- Page 48 Figure 11b - Typical 208/230v. 3ø Electrical Schematic Diagram Heat Pump (Models EAA) Eubank Wall Mount Heat Pump I&O Manual 05/2023 Rev.2...
- Page 49 Figure 11c, Typical 460v. 3ø Electrical Schematic Diagram Heat Pumps, Models EAA, with the PC Control Board Eubank Wall Mount Heat Pump I&O Manual 05/2023 Rev.2...
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Page 50: Scheduled Maintenance
Chapter 7 Maintenance 7.1 Scheduled Maintenance Eubank, Inc. strongly recommends that the heat pump 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 51 Chapter 8 Warranty Marvair, Inc. Limited Product Warranty Marvair Inc., warrants its products to be free from defects in materials and workmanship under normal use to the original purchaser for the period of time in the table below. If any part of your product fails within 12 months from start-up, or 18 months from shipment from the factory, whichever comes first, Marvair, Inc.
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Page 52: Appendix A - Installation Instructions Of Field Installed Electric Heat
APPENDIX A: Installation Instructions for Field Installed Electric Heat WARNING FIRE HAZARD Improper adjustment, alteration, service, maintenance or installation could cause serious injury, death and/or property damage. Installation or repairs made by unqualified persons could result in hazards to you and others. - Page 53 WARNING ELECTRICAL SHOCK HAZARD Failure to follow safety warnings exactly could result in serious injury, death, and/or property damage. Turn off electrical power at fuse box or service panel BEFORE making any electrical connections and ensure a proper ground connection is made before connecting line voltage.
- Page 54 Eubank Wall Mount Heat Pump I&O Manual 05/2023 Rev.2...
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Page 55: Appendix B: Heat Pump Start-Up - Commissioning Checklist
APPENDIX B: Heat Pump Start-Up - Commissioning Checklist Please complete the information on this form and email to EubankCustServ@airxcel.com. Date: _____/_____/_______ Owner & Location Equipment Owner: ___________________________________________________________________ Address: __________________________________________________________________ City: __________________________________________________________________ State:_______, Zip:____________ Installing Contractor Company: _______________________________Installer: ____________________________ Address: __________________________________________________________________ City: __________________________________________________________________ State:_______, Zip:____________ Equipment Information... - Page 56 Check Incoming Power at Terminal Block and verify Proper Voltage and Balance BEFORE STARTING UNIT. ❒ 208/230V 1 Phase 60 Hz. ❒ 208/230V 3 Phase 60 Hz. ❒ 460V 3 Phase 60 Hz. ❒ 380V 3 Phase 50Hz. ❒ 575 3 Phase 60 Hz. ❒...
- Page 57 Cooling Start If using a standard thermostat, Set the Control to ON, Mode to Cooling, Fan to Auto (other controls, set appropriately for cooling mode). Note: The reversing valve (Eubank Heat Pumps) is energized for “Cooling”. The “O” signal from the thermostat is Required. Adjust the cooling setpoint to approximately four degrees below the current indoor temperature.
- Page 58 Cooling (Check and Record Readings) After about 10 minutes of operating in the cooling mode, check and record the following data points. Inside Temperature (IAT) ºF Outside Temperature (OAT) ºF Entering Condenser Air Temperature (Should be same temp as OAT) ºF Leaving Condenser Air Temperature (Acceptable Range 15º...
- Page 59 Electric Reheat Re-Start While the system is still operating in “Cooling Mode” from the previous test. Re-Start Dehumidification. Do Not change the Humidity Setpoint on the Humidistat. Simply adjust the cooling setpoint to approximately four degrees above the current indoor temperature. After the short delay, the unit will sequence on, start dehumidification.
- Page 60 Economizer Cooling Stop Adjust the cooling setpoint to approximately two degrees above the current indoor temperature. The unit will sequence off. Is the Economizer Damper Closed? .................. ❒Yes ❒No Is the indoor blower motor (IBM) Off? ................❒Yes ❒No Heating Mode (Mechanical Heating Heat Pump) Close the Compressor (Cooling) circuit breaker.
- Page 61 Mechanical Heat Lockout ODT (Electric Heat ONLY While the system is operating in “Mechanical Heating Mode”. Activate Mechanical Heat Lockout (ODT). * Your unit may be configured with an outdoor thermostat configured as “Auxiliary Heat”, “Mechanical Heat Lockout”, or No outdoor thermostat. * Do Not change the temperature setpoint on the thermostat / control.
- Page 62 Calculate Heater kW Single Phase Units Heater kW = (HCAL1*L1&L2)/1000 = _______________kW. Example: HCAL1 * L1&L2 1000 Measured Voltage: L1&L2 = 241 Volts Measured Amperage: L1 = 20.7 Amps 4988.7 / 1000 = 4.99kW (5kW) Three Phase Units Heater kW = (HCAL1*L1&L2) + (HCAL2*L1&L3) + (HCAL3*L2&L3)/1000 = __________kW. Example: (HCAL1*L1&L2) + (HCAL2*L1&L3) + (HCAL3*L2&L3) 1000 Measured Voltage: L1&L2 = 241 Volts...
- Page 63 Please provide a description of the issue in the Notes section below and if you need help, call: Eubank Technical and Warranty Support: (888) 726-2734 This number is manned M-F, 8:00am to 5:00pm eastern. Technical support calls will be returned M-F, 5:00pm to 8:00pm eastern. Only Emergency Dispatch calls will be returned M-F, 8:00pm to 8:00am Eastern (and week- ends &...
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