SATPC0039910 Tab 04 4 Specs.pdf

Single Stage Models:

EAH1020H • EAH1024H • EAH1030H

EAH1036H • EAH1042H • EAH1048H

EAH1060H

2-Stage Models:

EAH2024H • EAH2030H • EAH2036H

EAH2042 •EAH2048H • EAH2060H

Installation & Operation Manual Vertical Wall-Mount Heat Pumps

IMPORTANT

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.

Heat Pump Product Manual Vertical Wall-Mount Heat Pumps

Eubank EAH Wall Mount HP Installation & Operation Manual 02/2025 Rev.2

Manufactured By:

Eubank, An AirX Climate Solutions Brand

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.

2Eubank EAH Wall Mount HP Installation & Operation Manual 02/2025 Rev.2

How To Use This Manual This manual is intended to be a guide to the Eubank Wall Mount family of vertical 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.

If you are installing the Eubank unit, first read Chapter 1 and scan the entire manual before beginning the installation as described in Chapter 2. Chapter 1 contains general, descriptive information and provides an overview which can speed up the installation process and simplify troubleshooting.

If a malfunction occurs, follow this troubleshooting sequence:

If you are still unable to correct the problem, contact the Factory at 1-800-841-7854 for additional assistance.

Please read the following “Important Safety Precautions” before beginning any work.

Important Safety Precautions

1. This unit uses an A2L, or mildly flammable, refrigerant. Extra precautions should be taken when handling or servicing the unit so as not to puncture the refrigerant tubing.

or damage to other components.

6. TURN ELECTRICAL POWER OFF AT THE breaker or fuse box BEFORE installing or working on the equipment.

LINE VOLTAGES ARE HAZARDOUS or LETHAL.

recommended by the manufacturer.

9. The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance or an operating electric heater).

This is the safety alert symbol . When you see this symbol on the Eubank unit and in the instruction manuals be alert to the potential for personal injury. Understand the signal word DANGER, WARNING, CAUTION and IMPORTANT. These words are used to identify levels of the seriousness of the hazard.

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.

© 10/2024 Eubank, An AirX Climate Solutions Brand

3 Eubank EAH Wall Mount HP Installation & Operation Manual

DANGER Failure to comply will result in death or severe personal injury and/or property damage.

WARNING Failure to comply could result in death or severe personal injury and/or property dam-age.

CAUTION Failure to comply could result in minor personal injury and/or property damage.

IMPORTANT Used to point out helpful suggestions that will result in improved installation, reliability or operation.

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.

• Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life.

• Installation and service must be performed by a qualified installer or service agency in accordance with these instructions and in compliance with all codes and requirements of authorities having jurisdiction.

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 - Description & Specifications

Chapter 2 - Electronic Control Board

Chapter 3 - Installation

4Eubank EAH Wall Mount HP Installation & Operation Manual

Chapter 4 - Start-Up

Chapter 5 - Troubleshooting

Chapter 6 - Electrical Schematics

6.1 Electrical Schematics

Chapter 7 - Maintenance

7.1 Scheduled Maintenance

Chapter 8 Service & Charging/Recovery

Chapter 9 Decommissioning

9.1 Decommissioning

Chapter 10 - Warranty Information

10.1 Standard Product Warranty

Appendix A Electronic Control Board Modbus Map

Appendix B Installation Instructions for Field Installed Electric Heaters

Appendix C Heat Pump Start-Up - Commissioning Checklist

Figures

5 Eubank EAH Wall Mount HP Installation & Operation Manual

Tables

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 BTUH. 2-Stage units have nominal cooling capacities from 24,000 to 60,000

BTUH.

All models have EER's of 11.00 and feature quiet operation. Resistance heating is available in all models.

Please see appendix A for the installation instructions on field installing electric heaters.

Eubank heat pumps are designed for easy installation and service. All units have built-in side mounting flanges and are shipped with a bottom support bracket. The unit has been factory charged. Service ports have been provided for field service, if required. All internal wiring is complete.

Eubank EAH heat pump models are available in a wide variety of styles and configurations to meet the various ventilation and cooling requirements. For school classrooms, models are available to comply with the ASHRAE 62-1999 standard, “Ventilation for Acceptable Indoor Air Quality.” Where cooling is required during cool or cold weather, e.g., telecommunication shelters, a factory-installed economizer can be used. To insure proper operation and optimum performance, all outside air ventilation packages and the economizer are non-removable, factory installed and tested. Instructions for the EAH models with the GreenWheel® ERV are included in this manual.

All Eubank heat pumps are tested and certified for efficiency and capacity in accordance with the ANSI/ AHRI (Air-Conditioning, Heating and Refrigeration Institute) Standard 390-2017 (Single Package Vertical Units). All EAH models meet or exceed the efficiency requirements of ANSI/ASHRAE/IESNA

90.1.2019. All heat pump models are listed by ETL and tested to UL standard 1995, 4th Edition. Eubank heat pumps are commercial units and are not intended for use in residential applications.

All models in this manual are equipped with a leak detection system. Once the unit is installed it must be powered, at all times, except for service. During normal operation the leak detection system has no impact on the operation of the unit, however upon detection of R-454B refrigerant all operations are stopped except for the indoor blower. The unit will then re-circulate air in the room for a minimum of 5 minutes. Once the 5 minutes have expired and the concentration of the refrigerant is below 8 percent of the Lower Flammability Limit (LFL) the unit will be allowed to operate as normal. If the concentration of the refrigerant remains above 8 percent of the LFL the unit will remain in re-circulation mode. To verify actuation of mitigation simply remove the sensor from the mitigation control board and the system should stop all operation except for the indoor blower. There is no need to calibrate or service the sensor. The sensor will provide an alarm upon failure or end of life. The sensor must be replaced with an identical sensor, or a manufacturer approved alternative.

6Eubank EAH Wall Mount HP Installation & Operation Manual

1.2 Serial Number Date Code

20 = 2020 01 = January 05 = May 09 = September 21 = 2021 02 = February 06 = June 10= October 22 = 2022 03= March 07 = July 11 = November 23 = 2023 04 = April 08 = August 12 = December

1.3 Model Identification

Example E A H 1 0 3 6 H A 0 5 0 C + + R + 1 E A + A 3 1 + + + + + + Position 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

1 Unit Designation/Family E = Eubank Wall Mount S = Stock Unit

2 Energy Efficiency Ratio

(EER) A = 11

3 Refrigerant Type H = R-454B

4 Compressor Type/Quantity 1 = Single Stage Compressor 2 = 2-Stage Compressor

Unit Capacity/Nominal Cooling (BTUH)

020 = 20,000 042 = 42,000 024 = 24,000 048 = 48,000 030 = 30,000 060 = 60,000 036 = 36,000

8 System Type H = Heat Pump

9 Power Supply (Volts-Hz-Phase)

A = 208/230-60-1 D = 460-60-3 C = 208/230-60-3

Heat Designation @ Rated Voltage

000 = No Heat 090= 9KW

040 = 4KW 100= 10KW

050 = 5KW 120= 12KW

060 = 6KW 150= 15KW

080 = 8KW

13 Ventilation Configuration

C = Economizer D = Motorized Damper w/Pressure Relief E = Motorized Damper w/Pressure Relief & Independent Motorized Damper Control H = GreenWheel® ERV N = Barometric Damper w/15% OSA T = Title 24 Compliant Economizer & Controls + = None $ = Special

14 Dehumidification

G = Hot Gas Reheat R = Electric Reheat T = Electric Reheat w/Humidity Control + = None $ = Special

15 Controls A = Power Fail Alarm w/Additional Lockouts C = 24V EMS Relay Kit + = None $ = Special

16 Operating Condition

A = Evaporator Freeze Sensor (EFS) C = EFS w/Hot Gas Bypass D = Desert Duty E = Extreme Duty F = Desert Duty w/Hard Start G = Desert Duty w/EFS H = Desert Duty w/Hard Start & EFS J = Extreme Duty w/Hard Start K = Extreme Duty w/EFS M = Extreme Duty w/Hard Start & EFS N = Hard Start P = Hard Start w/Low Ambient & CCH Q = Hard Start w/Low Ambient & Fan Cycle Control (FCC) R = Crank Case Heater (CCH) T = Hard Start w/EFS U = Hard Start w/Hot Gas Bypass V = Hard Start w/Low Ambient & CCH & EFS W = Low Ambient w/CCH X = Hot Gas Bypass Y = Low Ambient w/CCH & FCC Z = Low Ambient w/CCH & EFS 1 = Low Ambient w/FCC 2 = Low Ambient w/FCC & EFS 3 = CCH w/Hot Gas Bypass + = None $ = Special

17 Indoor Air Quality Features

A = UV Light D = Dry Bulb Sensor E = Dry Bulb Sensor w/Dirty Filter G = Dirty Filter Sensor K = Bi-Polar Ionization + = None $ = Special

18 Air Flow 1 = Top Supply/Center Return (STD) $ = Special

19 Compressor Location D = Left Hand - All 31/2 to 5 ton units E = Right Hand - All 11/2 to 3 ton units

20 Filter Option

A = 2” Pleated (MERV 8, AC/HP-C) C = 2” Charcoal D = MERV 11 High Filtration Package E = MERV 13 High Filtration Package F = Filter Access Through Return Air Grille W = Aluminum Washable + = None $ = Special

21 Corrosion Protection

A = Condenser Coil Only C = Evaporator Coil Only D = Both Coils Condenser & Evaporator E = All Coils Cond/Evap/Reheat F = Coat All G = Coastal Package & Evaporator Coil K = Coastal Package + = None $ = Special

Engineering Revision Level A3

D323

24 Cabinet Color

1 = Marvair Beige (STD) 2 = Gray (STD) 3 = Carlsbad Canyon (STD) 4 = White (STD) 5 = Stainless Steel Exterior 9 = Pebble Gray A = Stainless Steel - Unit $ = Custom Color (Powder Coat)

25 Sound Attenuation 2 = Compressor Blanket + = None

26 Security Option

A = Lockable Access Plate/Tamper Proof C = Tamper Proof Screws D = Lockable Access Plate w/Tamper Proof + = None $ = Special

27 Fastener/Drain Pan Option

A = Stainless Steel Fasteners C = Stainless Steel Drain Pan D = Stainless Steel Fasteners & Drain Pan + = None $ = Special

28 Miscellaneous C = Copeland Compressor + = None $ = Special

29 Unused + = None $ = Special

30 Special Variation + = None $ = Special Configuration Not Covered by Model Nomenclature

Note: Not all options are available with all configurations. Contact your Eubank sales representative for configuration details and feature compatibility.

7 Eubank EAH Wall Mount HP Installation & Operation Manual

1.4 Air Flow, Weights, Filter Sizes, Refrigerant Charges and Ambient Operating Ranges

Model Number External Static Pressure (WET COIL)

0.10 0.20 0.25 0.30 0.40 0.50

EAH1020H/1024H/2024H 889 831 820 801

EAH1030H/2030H 1152 1122 1100 1075 1028

EAH1036H/2036H 1265 1222 1200 1175 1133

EAH1042H/2042H 1650 1585 1520 1450 1360

EAH1048H/2048H 1693 1650 1619 1591 1529

EAH1060H/2060H 1693 1650 1619 1591 1529

Air flow ratings of 208-230v. Units are at 230v. Air flow ratings of 480 v. units are at 460 volts. Operation of units at a different voltage from the rating point will affect air flow. Eubank does not recommend operating at airflows lower than what is stated in this table.

Table 1. Air Flow (Cubic Feet per Minute) Model Weight Base w/Economizer w/3 Phase w/Economizer & 3 Phase

EAH1020H/EAH1024H/EAH2024H Lbs (Kg) 337 (153) 357 (162) 356 (161) 376 (171)

EAH1030H/EAH1036H/EAH2030H/EAH2036H Lbs (Kg) 397 (180) 419 (190) 416 (189) 438 (199)

EAH1042H/EAH1048H/EAH2042H/EAH2048H Lbs (Kg) 453 (205) 476 (216) 491 (223) 514 (233)

EAH1060H/EAH2060H Lbs (Kg) 469 (213) 492 (223) 522 (237) 545 (247)

Table 2. Installed Weight (lbs (Kg)

Model FILTER TYPE INCHES MILLIMETERS

PART

NUMBER

FILTERS

PER UNIT

MERV

RATING

EAH1020H/EAH1024H/EAH2024H Return Air Filter 30 x 16 x 2 762 x 406 x 51 80138 1 8 (STD)

EAH1030H/EAH1036H/EAH2030H/EAH2036H Return Air Filter 36½ x 22 x 2 927 x 559 x 51 80162 1 8 (STD)

EAH1042H/EAH1048H/EAH2042H/EAH2048H Return Air Filter 36½ x 22 x 2 927 x 559 x 51 80162 1 8 (STD)

EAH1060H/EAH2060H Return Air Filter 18 x 24 x 1 457 x 610 x 25 81199 2 8 (STD)

Table 3. Filter Size (inches)

Basic Model Special Option TEMPERATURE RANGES

Non-Economizer

Base Unit *20ºF - 131ºF (-7ºC - 55ºC)

Desert Duty *20ºF - 131ºF (-7ºC - 55ºC)

Extreme Duty *0ºF - 131ºF (-18ºC - 55ºC)

Economizer-Equipped

Base Unit -40ºF - 131ºF (-29ºC - 55ºC)

Desert Duty -40ºF - 131ºF (-29ºC - 55ºC)

Extreme Duty -40ºF - 131ºF (-29ºC - 55ºC)

**An Optional FCC switch is required for the cooling Mode. Heating mode ratings are @47°F Outdoor Temperature. Performance loss realized below this rating point.

Table 4. Ambient Temperature Operating Ranges

EAH1020H EAH1024H EAH1030H EAH1036H EAH1042H EAH1048H EAH1060H

Minimum Room Size (ft²) 108.0 108.0 109.8 117.8 137.5 157.1 180.6

Minimum Supply Height (ft) 6.9 6.9 6.9 6.9 6.9 6.9 6.9

EAH2024H EAH2030H EAH2036H EAH2042H EAH2048H EAH2060H

Minimum Room Size (ft²) 117.8 117.8 147.5 137.5 157.1 180.6

Minimum Supply Height (ft) 6.9 6.9 6.9 6.9 6.9 6.9

Table 5. Room Size Limitations

8Eubank EAH Wall Mount HP Installation & Operation Manual

Altitude (Meters) Altitude (Feet) Correction Factor 0 0 1.0

200 660 1.0

400 1310 1.0

600 1970 1.0

800 2620 1.0

1000 3280 1.1

1200 3940 1.1

1400 4590 1.1

1600 5250 1.1

1800 5910 1.2

2000 6560 1.2

2200 7220 1.2

2400 7870 1.3

2600 8530 1.3

2800 9190 1.3

3000 9840 1.4

3200 10500 1.4

3400 11150 1.5

3600 11810 1.5

3800 12470 1.6

4000 13120 1.6

4200 13780 1.7

4400 14440 1.7

4600 15090 1.8

4800 15750 1.9

5000 16400 1.9 In accordance with UL 60335-2-40, for units above 600m, multiply the minimum room area stated in the table above by the correction factor that corresponds with the altitude the unit is located at. This will give you a new minimum room area that is adjusted for your altitude. The units listed in this manual are not intended for use above 5000 meters.

Table 6. Altitude Correction Factor

1.5 General Operation

Refrigerant Cycle Eubank heat pumps use R-454B refrigerant in a conventional vapor-compression refrigeration cycle to transfer heat. In the cooling mode, a double blower assembly blows indoor air across the evaporator (indoor coil). Liquid refrigerant passing through the evaporator is boiled into gas by heat removed from the air.

The warmed refrigerant gas enters the compressor where its temperature and pressure are increased. The hot refrigerant gas condenses to liquid as heat is transferred to outdoor air blown across the condenser (outdoor coil) by the condenser fan. Liquid refrigerant is metered into the evaporator through a metering device to repeat the cycle. In the heating mode, the process is reversed.

Heating Mode During heating mode a special reversing valve reverses the flow of refrigerant through the system exchanging the roles of the condenser and evaporator. Now the outdoor coil becomes the evaporator and the indoor coil becomes the condenser. The refrigerant then flows through the outdoor coil, picks up heat and becomes vaporized. The vapor then enters the compressor where it is compressed to a higher pressure and temperature. Next it is pumped to the indoor coil where the heat will be released into the room. The compressed refrigerant vapor will condense to its liquid state as it gives up heat. Finally, liquid flows through a metering device into the evaporator where the cycle will be repeated.

Optional electric strip heat is available for all models. Please see Appendix A for instructions on field installation of electric heat.

New Highlight

9 Eubank EAH Wall Mount HP Installation & Operation Manual

Ventilation Options ASHRAE standard 62 requires 15 cfm of outside air per occupant of a classroom. To meet this requirement, Eubank offers seven ventilation packages for every budget and requirement.

Configuration “C”: Up to 100% Modulating Economizer The economizer reduces the cost of air conditioning by using outside air when acceptable to cool the room (Free Cooling). The factory installed Eubank® economizer has integral pressure relief.

Control Board Logic: Upon a “Call for Cooling”, the economizer control board calculates whether the HVAC operates in economizer mode or mechanical cooling mode based on outdoor temperature (dry bulb) or temperature/humidity (enthalpy). When outdoor conditions are favorable for economizer cooling, the damper drives open and modulates to maintain a 55ºF mixed air temperature through the supply grille.

When outdoor conditions are not favorable for economizer cooling, the economizer damper remains closed, and the HVAC unit will operate in mechanical cooling mode.

Features Designed for Telecommunication applications:

Hydrogen Fault Input: When 24VAC is applied to the Emergency Ventilation (EV) input, the economizer board forces the damper to open 100% for emergency ventilation. The compressor does not operate during Hydrogen Fault/Emergency Ventilation.

Forced Mechanical Cooling: When 24VAC is applied to the FC input of the economizer board, the economizer damper is forced closed, and the HVAC will operate in mechanical cooling mode. This is considered as economizer override in the event economizer cooling is not sufficient for the heat load.

Thermostat must provide the fan “G” signal to HVAC to activate the indoor blower.

Economizer Status: The economizer board has contacts that when used with the Marvair CommStat 4 Telecom HVAC Controller, change state to provide feedback to the CommStat 4 to indicate when the HVAC is in economizer mode verses mechanical cooling mode. This feedback allows the CommStat 4 to initiate the forced cooling feature to override economizer cooling and force mechanical cooling.

When used with minimum position potentiometer (optional), the Eubank® economizer can meet requirements of ASHRAE Std. 62.

Configuration “D”: Two-Position Motorized Fresh Air Damper w/Pressure Relief Ventilation Control Board Logic: The 92589 control board allows the position of the “D” damper to be set for desired outside air intake from fully closed to fully open. Setting 15 of the control board configuration menu allows the user to set the position from 20 (2VDC / Closed) to 100 (10VDC 100% open). The damper position can be adjusted in 1VDC increments to any position from closed to 100% open as required.

Operation: Anytime the indoor blower operates, the damper drives open to the position selected in the control board configuration menu setting 15. When the indoor blower stops operation the motorized damper spring returns to the fully closed position.

Note: This circuit does not interrupt the compressor or heater operation.

Configuration “E”: Two-Position Motorized Fresh Air Damper w/Pressure Relief Ventilation & Independent Control Control Board/Factory Installed Relay Logic: The 92589 control board allows the position of the “E” damper to be set for desired outside air intake from fully closed to fully open. Setting 15 of the control board configuration menu allows the user to set the position from 20 (2VDC / Closed) to 100 (10VDC 100% open). The damper position can be adjusted in 1VDC increments to any position from closed to 100% open as required.

Operation: Upon a “Call for Motorized damper” via a 24V signal from an external user-installed device, the motorized damper opens to the position selected in the control board configuration menu setting 15

10Eubank EAH Wall Mount HP Installation & Operation Manual and the indoor blower operates. A 24VAC signal {sourced from LVTB 24VAC “R” and supplied through a user-provided Normally Open (NO) contact} activates (opens) the Motorized Damper and connected Relief Damper. When the 24VAC signal is removed, the motorized damper spring returns to the fully closed position and the indoor blower stops operation. The motorized damper Does NOT open when there is a call for the indoor fan (G).

Note: This circuit does not interrupt the compressor or heater operation.

Configuration “H”: GreenWheel® ERV Energy Recovery Ventilator (Optional) Allows independent control of the exhaust and intake blowers. When used, the standard speed controller operates the intake blower and the optional second controller, the exhaust blower. Individual blower control allows positive pressurization of the classroom. Field or factory installed.

The Eubank GreenWheel® ERV is a total energy (both sensible and latent) wheel that reduces both construction and operating cost while ventilating the classroom to ASHRAE 62-1999 requirements. The use of the GreenWheel ERV reduces the energy load of the outside air. Exhausting stale, inside air keeps indoor pollutants and harmful gases to a minimum. The Eubank GreenWheel ERV has been tested and certified according to ARI Standard 1060.

How It Works: During the summer, cool dry air from the classroom is exhausted through the GreenWheel ERV to the outside. As the air passes through the rotating wheel, the desiccant becomes cooler and drier. Simultaneously, hot humid air is being pulled across the rotating wheel. The cool, dry desiccant absorbs moisture and heat from the incoming air. The cooler, drier air is mixed with the return air from the classroom and distributed throughout the room.

In the winter, warm moist air is exhausted through the GreenWheel ERV to the outside. As the air passes through the rotating wheel, the desiccant becomes warmer and absorbs moisture. Simultaneously, cold dry air is being pulled across the rotating wheel. The cold, dry air absorbs heat and moisture from the desiccant. The warmed air is mixed with the return air from the classroom and distributed throughout the room.

Quality Components: The GreenWheel ERV Ventilation package consists of the GreenWheel cassette, an incoming air blower, an exhaust air blower, an air filter for the incoming air and one fan speed controller that controls the speed of both blower motors simultaneously. As an option, a second fan speed controller can be factory installed for independent control of the exhaust air motor and positive pressurization of the classroom. Also, an optional filter on the exhaust air is available on selected models. Please consult your Eubank representative for details. The two blowers simultaneously pull fresh air from outside and exhaust air from the classroom through the rotating wheel. The air streams are separated by an insulated partition so that the incoming fresh air is not mixed with the exhaust air. 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. Variable speed blowers permit that the desired quantity of outside air is delivered into the room. Optional independent exhaust air blower control allows positive pressurization of the classroom, i.e., more outside air can be introduced through the GreenWheel ERV than is exhausted.

Configuration “N”: Barometric Fresh Air Damper (Standard) Barometric damper capable of up to 15% of rated airflow of outside air; field adjustable, no pressure relief.

Configuration “T”: Title 24 Compliant Economizer & Controls California Title 24 compliant economizer and associated controls.

Hot Gas Reheat (HGR) Dehumidification Mode (Special Option “G”) When the HGR is in the dehumidification mode, the hot gas reheat (HGR) coil is energized. The cooled, dehumidified air exits the evaporator coil and is blown through the HGR coil. This coil is sized to the sensible capacity of the unit. The heat in the HGR coil is transferred to the air stream. The use of the HGR

11 Eubank EAH Wall Mount HP Installation & Operation Manual coil allows the indoor humidity of the classroom to be maintained at or below a certain set humidity set point without over cooling the classroom. These units can not add humidity to the classroom.

The operation of the HGR coil is controlled by a humidity controller. If the humidity rises above the set point on the controller and the temperature in the classroom is satisfied, both mechanical cooling and the HGR coil operate to temper the air and lower the humidity. If the temperature in the classroom rises above or falls below the set point of thermostat and the unit is operating in the dehumidification mode, the need for cooling or heating will override the call for dehumidification and the HGR coil is disengaged until the thermostat is satisfied. This assures the classroom temperature is maintained as first priority and humidity control is second.

The humidity controller or BAS control is required for proper operation of the HGR coil.

1.6 Options

Low Ambient Control The low ambient control permits mechanical cooling when outdoor ambient temperatures are low. The control uses a reverse-acting high pressure switch to cycle the condenser fan motor according to liquid refrigerant pressure conditions. Switch closure and fan operation occurs when the pressure reaches 400 PSIG. The switch opens again when the refrigerant pressure falls to 245 PSIG. Therefore, the outdoor fan always starts after the compressor, and it will cycle frequently during normal operation at low outdoor conditions.

Hard Start Kit Used on single phase equipment to give the compressor higher starting torque under low voltage conditions.

Adjustable Outdoor Thermostat Will not allow electric resistance heat to be energized unless the outdoor temperature is below the desired set point. Field or factory installed. Available on all Eubank units. P/N 93934

Single Point Feed When multiple internal disconnects are used, single point feed permits only one field power supply to heat pump. Field installed only. Available on all Eubank H/P units.

Energy Management System (EMS) Relay to control the heat pump. Available in 24, 120 or 240 VAC. Field or factory installed.

Electric Reheat for Dehumidification Control provides simultaneous operation of compressor when in cooling mode and the electric elements to provide dehumidification without over cooling the room. The electric element (kW) must be properly sized for each model for proper operation. Factory installed. Available on all EAH units. Consult factory for details.

Hot Gas Reheat (HGR) Eubank® heat pumps equipped with the Hot Gas Reheat (HGR) allow the indoor humidity of the controlled environment to be maintained at or below a certain humidity set point. These units do not have the ability to add humidity to the classroom.

Dehumidification is achieved by operating mechanical cooling in conjunction with a hot gas reheat coil.

The coil is sized approximately to the sensible capacity of the total tonnage of the machine.

Speed Control for GreenWheel® ERV Exhaust Blower For separate control of the exhaust blower. When used, the standard speed controller operates the intake blower and the optional second controller the exhaust blower. Individual blower control allows positive pressurization of the classroom. Can be factory or field installed.

12Eubank EAH Wall Mount HP Installation & Operation Manual

Cabinet Color Eubank heat pumps are available in six different cabinet colors. The standard colors are Eubank® beige, white, gray and Carlsbad Canyon (brown). The standard cabinet’s sides, top and front panels are constructed of 20 gauge painted steel. Contact your Eubank representative for color chips. Custom colors are also available; contact Eubank for details.

Two stainless steel cabinet constructions are available:

Stainless Steel Exterior (Option “5”): This option replaces all standard exterior painted surfaces with stainless steel. This option also replaces the standard unpainted compressor base of the unit and exterior cabinet screws with stainless steel. No other standard construction surfaces are stainless steel in this option, unless listed in this description. Back panel is not stainless steel with this option. This option is designed to give a more economical alternative to full stainless steel, and still offer an enhanced level of protection.

For further corrosion protection, please see our “A” offering at full stainless on all metal components.

Stainless Steel Unit (Option “A”): This option replaces all interior and exterior steel sheet metal parts with stainless steel. All galvanized and painted steel surfaces found in the standard unit are stainless steel with this option. All cabinet screws are stainless steel. No other standard construction surfaces are stainless steel, unless listed in this description. This option is designed to give our most robust protection against steel corrosion.

13 Eubank EAH Wall Mount HP Installation & Operation Manual

Chapter 2 Electronic Control Board

2.1 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. This UL certified component is engineered to optimize Heating, Cooling and Dehumidification operation while communicating valuable information to the end user. Special features include 2-Stage operation with varying speed control to optimize latent and sensible capacity, built in remote communication (Modbus) for monitoring and/or control, optimized head pressure control and configurable menu options for various operations and control. The Eubank PCB comes equipped with seven segment display to annunciate faults, which drastically reduces troubleshooting time and system downtime. 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.

2 3 4 5 6 7

121315 14

9 10

Figure 1. PC Control Board

14Eubank EAH Wall Mount HP Installation & Operation Manual

I/O Table for Control Board Item Description

1 Economizer Actuator Output 2-10 VDC 2 Outdoor Motor Control Output 0-10 VDC or PWM 3 Indoor Motor Control Output 0-10 VDC or PWM 4 Enthalpy Sensor Signal Input 4-20mA

5 Outdoor Sensor Signal 10K NTC (Heat Pumps) / Dry Bulb Sensor Signal Input 10K NTC (Systems Equipped with Dry Bulb Economizer)

6 Supply Air Sensor Signal Input 10K NTC (Systems Equipped with Economizer) 7 Defrost Sensor Signal Input 10k NTC (Heat Pumps Only) 8 Head Pressure Control Sensor Signal 10k NTC (ECM Motors) 9 Control Board Menu/Fault Display

10 Menu/Up/Down Selection Buttons 11 Modbus RJ11 Communications Ports

12 LPS 1 = Freeze Sensor Input 10K NTC | LPS 2 = Not currently used (Software version 16 and later)

HPS 1 = High Pressure Switch Input (Normally Closed) HPS 2 = Low Pressure Switch Input (Normally Closed) (Software Version 16 and later)

14 Thermostat Inputs/Alarm And Status Terminals 15 24 VAC To Power Board (18 VAC To 30 VAC) 16 Indoor Blower Output 24 VAC (PSC Motors) 17 Reheat Output 24 VAC (Hot Gas Or Electric Reheat Dehumidification) 18 Reversing Valve Output 24 VAC (Heat Pumps Only) 19 Electric Heat Output 24 VAC 20 Outdoor Fan Output 24 VAC (PSC Motors) 21 Compressor 1/1st Stage Output 24 VAC (Single Stage Compressor)

22 Compressor 2/2nd Stage Output 24 VAC (Dual Compressor System 2nd Compressor) (Single Compressor 2nd Stage)

23 Control Board Power Indicator LED

2.2 Installation and Replacement

The PCB is factory installed. To install a replacement PCB, use the six mounting holes along with the appropriate screw size to firmly secure the board to the control box. After this is achieved, follow the wiring diagram and menu configuration for the respective system for appropriate operation. Ensure that the terminals used do not make any unwanted electrical connection (via strands etc.) with any other terminals.

Please allow a 1” creepage distance between the board and all other adjacent electrical components.

2.3 PCB Details and Information

The PCB is equipped with an on board seven-segment display (Item #9) for configuring various settings and displaying faults. During normal operation the display remains off unless the configuration menu is accessed or a fault has occurred.

Faults will be annunciated on the display as shown below:

Display Displayed Faults AS-F Supply Air Sensor Fault (sensor disconnected or faulty) if equipped DB-F Dry Bulb / Outdoor Sensor Fault (sensor disconnected or faulty) if equipped DS-F Defrost Sensor Fault (sensor disconnected or faulty) Heat Pumps Only ES-F Enthalpy Sensor Fault (sensor disconnected or faulty) if equipped EF Emergency Fan / Ventilation Active FS Freeze Sensor Fault

LP-1F Low Pressure Lockout HP-Lc High Pressure / Loss of Charge Lockout o3 Low Voltage "Brownout" 16vac or less for 10 minutes

15 Eubank EAH Wall Mount HP Installation & Operation Manual

2.3.1 – Programming Menu Configuration

1. To Enter Programming Mode:

and the number every 0.5s.

3. While in parameter menu:

main menu.

• Press the Up/Down buttons to adjust the current parameter selection.

4. To exit programming mode, press and hold the Mode and Up buttons while in the programming main menu.

activity.

Note: 100 will be displayed by alternating between "1" and "00" every 0.5s.

Configuration Menu Menu Set-ting

Name Default Selections General Description

1 System Type AC AC, HP HP = Heat Pump, AC = AC Unit (Factory Set) 2 IBM Select P P, DC P = PWM, DC = 0-10V (Factory Set) 3 Fan Purge 90 N, 10-90 IBM P = PWM, dC = 0-10V and IBR Off Delay in Seconds 4 IBM G Set 60 30-100 G Call for Indoor Blower Speed Setting 5 IBM Y1 Set 80 40-100 1st Stage Cooling Indoor Blower Speed Setting 6 IBM Y2 Set 100 40-100 2nd Stage Cooling Indoor Blower Speed Setting 7 OFM Select P P, DC P = PWM, DC = 0-10V (Factory Set) 8 OFM Set 80 65-100 Outdoor Fan Motor Max Speed Setting 9 Defrost Timer 30 30, 60, 90 Defrost cycle timer in minutes

10 EHDD Select Y Y, N CAN ONLY BE "Y" IF SCKT IS "N" (Electric Heat During Defrost) 11 SCKT Select N Y, N SCKT= Y OVERRIDES EHDD (Safety Circuit) 12 ODS Set 50 0-70 Outdoor Sensor for Electric Heat Enable Setpoint HP ONLY 13 ECONO Select N Y, N N = Disabled (No Econo.), Y = Enabled (W/Econo.)

14 Sensor Type EN EN or DB Economizer sensor type selection EN= Enthalpy, DB = Dry Bulb

15 ECONO Set D 70 A-E 20F - 105F

Selections A=73F, B=70F, C= 67F, D =63F E= 55F all @ 50%RH (Only available if EN sensor type is selected) Dry Bulb 20F to 105F

16 MIN POS 20 20-100 Sets the damper position for Minimum Open 17 W2 Speed 100 70-100 Sets the Indoor Blower Speed for Electric Heat 18 Dehum Speed 80 60-100 Sets the Indoor Blower Speed for Dehumidification 19 Pulse Reheat Y n/Y Y = Pulsing reheat @ Dehum Supply Set N= On/Off reheat 20 Dehum Supply Set 72 70-75 Supply Air Setpoint for Dehumidification w/ 5F off differential 21 DS Calibration 0 -18 Defrost Sensor Calibration 22 MAS Calibration 0 -18 Supply Air Sensor Calibration 23 T'STAT Select H H, C H = hardwired 24V tstat, C = communicating tstat 24 MODBUS ID 1 1 to 99 Sets the Modbus ID for the unit 25 MODBUS BAUD rate 19 9.6, 19 Available Baud Rates 9.6 = 9600, 19 = 19200 26 MODBUS Timeout 10 1 to 60 Communications Timeout in minutes 27 Head Press. Cutout 85 75-95 Sets Head Press Min Cutout Temp adjustable in 1F increments 28 Test N Y, N Set to “Y” all timers are reduced for testing (Resets after 10 min.)

29 SW version number N/A N/A Displays the current version software

16Eubank EAH Wall Mount HP Installation & Operation Manual

Configuration Menu Details

1. System Type: 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. IBM Select: This setting allows the IBM (Indoor Blower) control signal to be configured for PWM or 0-10vdc control. The default control output signal is PWM.

3. Fan Purge: This setting allows the delay off time of the indoor blower once the call for the indoor blower has been removed. The selections are N (no delay) or 10-90 seconds. After the default time of 90 seconds the indoor blower will shut off. Selecting the N (no delay) will allow the Indoor blower to shut off immediately after any request has been removed.

4. IBM G Set: This is an independent setting for the speed at which the Indoor blower will operate upon a request for G (Fan Only) via Digital Input or MODBUS. The default setting for the IBM G Set is 60% of maximum speed. The speed may be adjusted from 30-100% in 1% increments to meet desired airflow requirements.

5. IBM Y1 Set: This is an independent setting for the speed at which the Indoor blower will operate upon a request for Y1 (1st stage cooling) via Digital Input or MODBUS. The default setting for the IBM Y1 Set is 80% of maximum speed. The speed may be adjusted from 40-100% in 1% increments to meet desired airflow requirements.

Note: Adjusting the speed too low will result in coil freezing.

6. IBM Y2 Set: This is an independent setting for the speed at which the Indoor blower will operate upon a request for Y2 (2nd stage cooling) via Digital Input or MODBUS. The default setting for the IBM Y1 Set is 100% of maximum speed. The speed may be adjusted from 40-100% in 1% increments to meet desired airflow requirements.

Note: Adjusting the speed too low will result in coil freezing, low-pressure or high-pressure lockout.

7. OFM Select: This setting allows the IBM (Indoor Blower) control signal to be configured for PWM or 0-10vdc control. The default control output signal is PWM.

8. OFM Set: This is an independent setting for the max speed at which the Outdoor fan will operate.

The default setting for the OFM Set is 80% of maximum speed. The speed may be adjusted from 65-100% in 1% increments to meet desired airflow requirements.

Note: Adjusting the speed too low will result in coil freezing, low-pressure or high-pressure lockout.

9. Defrost Timer: The defrost timer only applies to Heat-pump systems (when setting 1 is set to HP).

This is the accumulation timer used to monitor for heat-pump defrost control. The selections for defrost timing is 30, 60 and 90 minutes. The defrost timer accumulates the compressor runtime in the heat-pump mode and monitors the defrost sensor for freezing conditions to initiate a defrost cycle at the selected defrost timing interval. The default defrost time is 30 minutes.

10. EHDD Set: The Electric heat during defrost setting allows the electric heat to operate when a defrost cycle is being performed in heat-pump mode. The selections for the EHDD Set are Y (yes) or N (no). When set to N (no) the electric heat will not operate automatically during a defrost cycle in heat-pump mode. When the EHDD Set is set to Y (yes, Default) the electric heat will operate upon each defrost cycle in the heat-pump mode.

Note: EHDD and SCKT cannot both be set to the Y (yes) selection at the same time. SCKT takes priority over EHDD.

11. SCKT Set: The SCKT setting is used to prevent simultaneous operation of the electric heat and compressor. The selections for the SCKT Set are Y (yes) or N (no).