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MODELS:

7AA1024A-7AA1060A  (Single Stage)

7AA2036A7AA2060A (2-Stage)

Installation & Operation Manual 

11 EER Vertical Wall-Mount Air Conditioners

Eubank 7AA1024A-1060A & 8AA2036A-2060A I&O Manual 03/2021 Rev.2

Air Conditioner Product Manual

Vertical Wall-Mount Air Conditioners

with Front Control Box Panel

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. 

INSTALLER:  

Affix the instructions on the inside of the building adjacent to the thermostat.

END USER:  

Retain this manual for future reference.

Manufactured By:

A Division of the AIRXCEL

®

 Commercial Group

P.O. Box 400 • Cordele, Georgia 31010 • 156 Seedling Drive • Cordele, Georgia 31015

(229) 273-3636 • Fax (229) 273-5154

E-mail: [email protected] • Internet: www.EubankWallmount.com

The most current version of this manual can be found at www.EubankWallmount.com.

Содержание 7AA1024A

Страница 1: ...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 Manufactured By A Division of the AIRXCEL Commercial Group P O Box 400 Cordele Georgia 31010 156 Seedling Drive C...

Страница 2: ...aying it down on its side may cause oil to leave the compressor and breakage or damage to other components 3 TURN ELECTRICAL POWER OFF AT THE breaker or fuse box BEFORE installing or working on the equipment LINE VOLTAGES ARE HAZARDOUS or LETHAL 4 OBSERVEandCOMPLYwithALLapplicablePLUMBING ELECTRICAL andBUILDINGCODESandordinances 5 SERVICE may be performed ONLY by QUALIFIED and EXPERIENCED PERSONS ...

Страница 3: ... 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 1 1 General Description 5 1 2 Serial Number Date Code 5 1 3 Air Flow Weights and Filter Sizes 5 1 4 Model Identification 6 1 5 General Operation 7 1 6 Optional Controls and Packages 8 1 7 Electrical O...

Страница 4: ...7 Figure 3 Enthalpy Sensor Temperature Control Points 18 Figure 4 Electrical Controls Alternate Construction 18 Figure 5 Economizer Control Board 19 Figure 6a Setting the Speed for the Y1 and Y2 Operation for Indoor Motor 22 Figure 6b Second Stage Cooling Speed 22 Figure 7 Output Termination for Indoor Motor Control Signal 23 Figure 8 Outdoor Motor Speed Setting 23 Figure 9 Output Termination for ...

Страница 5: ...lockout relay the compressor time delay and the timed low pressure bypass In addition the control board has LED s to indicate operating status and fault conditions to assist the service technician A complete description of functions of the control board is in Section 1 6 All models are designed for easy installation and service Major components are accessible for service beneath external panels Al...

Страница 6: ...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 D Dry Bulb Sensor E Dry Bulb Sensor w Dirty Filter G Dirty Filter Sensor None Special 18 Air Flow ...

Страница 7: ...LBS KG Non Economizer 7AA1024A 395 179 7AA1030A 1036A 7AA2036A 2042A 451 205 7AA1048A 1060A 7AA2048A 2060A 599 272 With Economizer 7AA1024A 415 188 7AA1030A 1036A 7AA2036A 2042A 471 214 7AA1048A 1060A 7AA2048A 2060A 619 281 Table 3 Shipping Weights for Eubank Wall Mount AC Units 1 5 General Operation Model Ventilation Configuration Temperature Range Non Economizer Standard N 20ºF 120ºF 7ºC 48 9ºC ...

Страница 8: ...rstartingtorqueunderlowvoltageconditions Generally not recommended on units with scroll compressors Extreme Duty Package The Extreme Duty Package allows selected Eubank air conditioners to operate in extremely cold and hot ambient conditions The Extreme Duty Kit is always factory installed Non economizer air conditioners will operate from 0 F to 131 F 18 to 55 C Economizer equipped air conditioner...

Страница 9: ...mately 20 000 BTU Because the strip heat is sized to the approximate sensible cooling capacity only selected models are available Operation When the humidity rises above the set point on the humidity controller both mechanical cooling and electric reheat operate to temper the air and lower the humidity If the temperature in the controlled environment rises above the set point of the thermostat and...

Страница 10: ...tdoor thermostat is used with a TXV to prevent excessive cycling or hunting of the TXV Desert Duty Controls and components which allow the units to operate in very hot ambients 131 F 55 C Includes a thermal expansion valve a sealed condenser fan motor and a sealed control box Aclosed loop design on non economizer units insures that no outside air is introduced into the shelter Cabinet Color and Ma...

Страница 11: ...OMRPESSOR CONTACTOR CAPACITOR C COMP CCH DFS CC OUTDOOR AIR MOTOR OUTDOOR FAN MOTOR OUTDOOR FAN RELAY REVERSING VALVE SOLENOID OFM PLC RVS OFR OAM FAN CYCLE CONTROL RELAY FAN CYCLE CONTROL FCCR FCC REHEAT SOLENOID RHS GREEN WHEEL GW SINGLE POINT POWER ENTRY SPPE INDOOR BLOWER RELAY IBR FRESH AIR MOTOR FAM TRANSFORMER XFMR VENTILATION MOTOR VM VENTILATION MOTOR RELAY VMR ONE TIME LIMIT OTL ELECTRIC...

Страница 12: ... CRANKCASE HEATER COMRPESSOR CONTACTOR CAPACITOR C COMP CCH DFS CC OUTDOOR AIR MOTOR OUTDOOR FAN MOTOR OUTDOOR FAN RELAY REVERSING VALVE SOLENOID OFM PLC RVS OFR OAM FAN CYCLE CONTROL RELAY FAN CYCLE CONTROL FCCR FCC REHEAT SOLENOID RHS GREEN WHEEL GW SINGLE POINT POWER ENTRY SPPE INDOOR BLOWER RELAY IBR FRESH AIR MOTOR FAM TRANSFORMER XFMR VENTILATION MOTOR VM VENTILATION MOTOR RELAY VMR ONE TIME...

Страница 13: ...Eubank 7AA1024A 1060A 8AA2036A 2060A I O Manual 03 2021 Rev 2 13 Figure 1c Typical Electrical Schematic w Economizer Alternate Construction ...

Страница 14: ...14 Eubank 7AA1024A 1060A 8AA2036A 2060A I O Manual 03 2021 Rev 2 Figure 1d Typical Electrical Schematic w Economizer Alternate Construction ...

Страница 15: ...Eubank 7AA1024A 1060A 8AA2036A 2060A I O Manual 03 2021 Rev 2 15 Figure 1e Typical Electrical Schematic w Economizer Alternate Construction ...

Страница 16: ... changeover to outside air for free cooling The control board must be configured for proper operation of the economizer by selecting the desired changeover temperature The desired temperature is selected by four dip switches on the board See item 9 in Figure 4 for the location of the dip switches 1 Selecting the set point for the enthalpy sensor On the board there are four dip switches 1 2 3 4 tha...

Страница 17: ...Minimum Position Potentiometer W2 jumper The potentiometer controls the amount of outside air introduced in the building when the economizer damper closes or the air conditioner is Off or in Mechanical Cooling The factory setting is for the damper to close completely when the unit is off or in Mechanical Cooling Pins 1 2 are jumpered If outside air is desired during mechanical cooling or whenever ...

Страница 18: ...ecurrentlytheonlybrandofsensorsusedintheairconditioners Jumper W3 allows us to use alternative brands at a future date On all current air conditioners pins 1 2 are jumpered on W3 See item 4 in Figure 4 Figure 3 Enthalpy Sensor Temperature Control Points Marvair Economizer Controller Figure 4 Electrical Controls 7AA Alternate Construction ...

Страница 19: ...on Potentiometer 0 to 100 Factory setting is 50 2 Field connection from CommStat 4 2 terminal 5 For Honeywell sensors 8 W2 Minimum Position Potentiometer Jumper Jumper Pins 1 2 to Disable Factory setting Jumper pins 2 3 to Enable 3 Field connection from CommStat 4 MAR terminal 6 For Prism sensors 9 Enthalpy Dip Switches Set points are same as previous Honeywell controller Factory setting is 4 63 F...

Страница 20: ...aluable 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 the ability to function autonomously without the need for an off the shelf thermostat The MarvairPCBcomesequippedwithLEDstomonitorlockoutsforindepende...

Страница 21: ...ressure Switch LP Low Pressure Switch Switch to Be Closed for Cooling Operation Switch to Be Connected to R Node 16 24 VAC Power Input to PCB 17 Digital Outputs 24 VAC The PCB Makes and Breaks R RH Reheat EH Electric Heat CC 1 2 Compressor Respectively 18 Alarm Contacts 2 2 Installation and Replacement The PCB is factory installed To install a replacement PCB use the six mounting holes along with ...

Страница 22: ...iate signal terminations must be used This jumper will be factory installed In replacing the PCB verify the necessary signal and configure the board accordingly Only 2 of the 3 pins should be used for the necessary configurations DO NOT CONNECT ALL 3 PINS 4 1 2 3 1 Set for 0 10V Signal Jumper To Remain On The Appropriate Terminal For Correct Operation 2 Set For PWM Signal Jumper To Remain On The A...

Страница 23: ...otentiometer See figure below 3 1 2 1 Set for 0 10V Signal Jumper To Remain On The Appropriate Terminal For Correct Operation 2 Set For PWM Signal Jumper To Remain On The Appropriate Terminal For Correct Operation 3 Outdoor Motor Speed Potentiometer Figure 8 Outdoor Motor Speed Setting Output Termination for Outdoor Motor Control Signal Note Follow data wiring and signal control signal type of the...

Страница 24: ...r second The board also allows 15 different MODBUS addresses based on the position of the NET ADDRESS DIP switches The Net Addresses are written in Binary see table below with switch 4 being the least significant bit THE NUMBERS ONTHE DIPSWITCHES DO NOT CORRELATE TO MODBUS ADDRESSES The figure below shows the positions of the various components necessary to set up communication on the on the PCB 1...

Страница 25: ...ommissioning startupsequence to ensure safety and system reliability This document is only valid if the system is used as intended This section defines the manner and method of control of the HVAC system It will cover the following operations and protections 1 0 Blower Operation 2 0 Cooling Operation 2 1 Mechanical Cooling 2 1 1 Partial Capacity 50 60 2 1 2 Partial Capacity 50 2 1 3 Full Capacity ...

Страница 26: ...follows 1 Stage 2 Cooling Request Y2 Input 2 Stage 1 Cooling Request Y1 Input 3 Electric Heat Request W2 Input 4 Dehumidification Request Hum Input 5 Indoor Fan Request G Input Note The priority list above also describes the operation that takes precedence in the event that there is a request for all operations or a combination of operations The controller will NOT energize the compressor outputs ...

Страница 27: ...ty Only CC1 output can achieve partial capacity Both CC1 and CC2 outputs are required to achieve full capacity Request Active Input Active Output Stage 1 Cooling 1 Fixed Compressor Y1 CC1 Partial Capacity Stage 1 Cooling 2 Fixed Compressors Y1 or Y2 CC1 or CC2 Respectively Partial Capacity Stage 1 Cooling 1 Staged Compressor Y1 CC1 Partial Capacity Stage 2 Cooling 2 Fixed Compressors Y1 Y2 CC1 CC2...

Страница 28: ...ing operation In the event that the fault occurs a second time on the same call for cooling the system locks out To clear the fault the Cooling request must be cycled or the system must be power cycled Status LEDs with associated flash codes or designated MODBUS values can be monitored to verify this fault The system will continue to lockout unit the problem is rectified 5 3 Low Voltage In the eve...

Страница 29: ...nsor has to be configured via MODBUS Once configuration is complete the unit has the capability to function autonomously to maintain the space temperature Discrete Registers Read with Function Code 02 Write to RW or WO registers with Function Code 05 ID Description Size Data Format R W 1 Current Status of the Y1 Compressor Call 1 Bit 0 no call 1 call RW 2 Current Status of the Y2 Compressor Call 1...

Страница 30: ...g 16 Bit 1 60 default 25 represents minutes of allowed MODBUS inactivity before switching to onboard T Stat mode RW 10 Current OFM Speed 16 Bit 0 1023 RO 11 Current IFM Speed 16 Bit 0 1023 RO 12 Anti Short Cycle Compressor 1 16 Bit 0 360 0 5 sec per step RO 13 Anti Short Cycle Compressor 2 16 Bit 0 360 0 5 sec per step RO 14 Voltage Reading 16 Bit 0 1023 1023 Greater than 20V 965 18V cutoff RO 15 ...

Страница 31: ...or will not start makes excessive noise or will not pump return the unit to the freight carrier 3 2 Installation Requirements General 1 Inspect unit for completeness Check for missing parts e g hardware Refer to the installation kit information in section 2 3 2 Remove access panels and check for loose wires Tighten screw connections 3 Complete and mail the warranty registration card You must consi...

Страница 32: ...s 76 cm 18 inches 46 cm 24 inches 61 cm 6 inches 15 cm 1030A 1036A 2030A 2036A 30 inches 76 cm 18 inches 46 cm 24 inches 61 cm 6 inches 15 cm 1042A 1048A 1060A 2042A 2048A 2060A 30 inches 76 cm 30 inches 76 cm 24 inches 61 cm 6 inches 15 cm Table 7 Minimum Clearances 6 Codes Make sure your installation conforms to all applicable electrical plumbing building and municipal codes Some codes may limit...

Страница 33: ...On Auto change over Keypad lockout Non volatile program memory P N 50123 Digital thermostat 2 stage heat 2 stage cool 7 day programmable Fan switch Auto On Auto change over Status LED s Backlit display Programmable fan Non volatile program memory P N 50107 Grilles Wall Sleeves Supply Grilles For 7AA1024A P N 80675 28 x 8 711 mm x 203 mm For 7AA1030A 1036A 1042A 1048A 1060A P N 80676 30 x 10 762 mm...

Страница 34: ...ual is intended for use by a qualified service agency that is experienced in such work is familiar with all precautions and safety procedures required in such work and is equipped with the proper tools and test instruments 3 4 Porting and Duct Work General Information Note The following instructions are for general guidance only Due to the wide variety of installation possibilities specific instru...

Страница 35: ...eet 122cm of the unit Galvanized metal duct extensions should be used to simplify connections to duct work and grilles Use fabric boots to prevent the transmission of vibration through the duct system The fabric must be U L rated to a minimum of 197 F 92 C Minimum Airflow Requirements The duct system must be engineered to assure sufficient air flow through the unit even under adverse conditions su...

Страница 36: ...he wall You must stabilize the unit on the bracket with the lifting device or by some other means the bracket alone is not sufficient 3 Make sure that the duct flanges are properly aligned with the wall opening Adjust as necessary 4 Note the holes in each side flange Using the holes for guides drill holes through the wall with a 3 8 drill bit Insert the 3 8 x 5 bolts through the flanges Install nu...

Страница 37: ...ystem with small critical refrigerant charges where the installation of gauges may be objectionable can be made by monitoring the temperature of the refrigerant lines at the compressor The temperature should rise on the discharge line while the suction line temperature decreases Reverse rotation also results in a substantially reduced current draw when compared to tabulated values There is no nega...

Страница 38: ...ower leads connected to the internal circuit breaker on one of the units only D Restore power and retest the phase step B When the voltage reads 0 the units are in phase E Turn off power and proceed Low Voltage Wiring IMPORTANT The following instructions are generic wiring instructions and may not be applicable for air conditioners with various options Always refer to the wiring diagram in the air...

Страница 39: ... air conditioning system for a telecommunication cabinet or shelter The CommStat 3 Controller is factory programmed with standard industry set points to facilitate installation If desired each of the set points can be quickly and easily changed in the field by the installer It can be used with Eubank s unique vertical packaged wall mount air conditioners or other environmental control units See Co...

Страница 40: ... Contacts NC C NO High Building Temp Alarm Dry Contacts NC C NO 5 Connect to Normally Closed NC dry contacts from smoke alarm SMOKE ALARM JUMPER NOTE IF LINE VOLTAGE IS BELOW 220 VAC USE THE 208 TRANSFORMER TAP 1 24 VAC connections only 2 For immediate shutdown of air conditioner upon a signal from the smoke alarm the jumper between terminals 8 and 10 in the ComPac I and ComPac II units must be re...

Страница 41: ...mizer Equipped models only To check the system operation under different ambient conditions the air temperature and enthalpy sensors must be tricked When outdoor ambient condi tions are higher than the control setting a component cooler aerosol may be sprayed directly into the enthalpy sensor to simulate low enthalpy conditions causing the economizer damper to open Alternately when outdoor conditi...

Страница 42: ...ease exercise caution and good judgement when servicing the unit Use only safe and proven service techniques Use refrigeration goggles when servicing the refrigeration circuit WARNING The refrigerant circuit has hot surfaces and the electrical voltages inside of the unit may be hazardous or lethal SERVICE MAY BE PERFORMED ONLY BY QUALIFIED AND EXPERIENCED PERSONS 5 2 Failure Symptoms Guide PROBLEM...

Страница 43: ...e compres sor troubleshooting section E Water on floor near unit 1 Obstruction in condensate line 2 Obstruction or leak in condensate pan 3 Unit is not level 1 Check for clog or restriction 2 Check pan for leak or blockage 3 Level unit F No space heating or reduced heating units equipped with resistance ele ments 1 Defective heating element s 2 Thermal limit open 3 Defective heater contactor 1 Che...

Страница 44: ...nostic LED which indicates the lockout fault The control board will enter into and indicate lockout if either of the fault conditions LPS or HPS occur twice The contactor must be closed before the first fault condition can be recognized by the control board The contactor will be closed 3 minutes after the unit is energized and only if cooling is required The first fault condition will open the con...

Страница 45: ...ied before restarting Condenser Periodicallyinspecttheoutdoorcondensercoilandthecabinetairreliefsfordirtorobstructions Remove foreign objects such as leaves paper etc If the condenser coil is dirty it may be washed off with a commercial solvent intended for this purpose TURN OFF POWER BEFORE CLEANING Be sure that all electrical components are thoroughly dry before restoring power Use a fin comb of...

Страница 46: ...ny other material charges 2 Damages caused by shipping accident abuse negligence misuse fire flood or Acts of God 3 Damages caused by operating or staging the unit in a corrosive environment 4 Damages caused by improper application of the product 5 Damages caused by failing to perform proper routine maintenance 6 Expenses incurred for erecting disconnecting or dismantling the product or installing...

Страница 47: ..._______________________ Compressor Model No ______________________________________________ Serial No ______________________________________________ B Pre Start Up Is there any shipping damage Yes No If so where ________________________________________________________________ Will this damage prevent starting the unit Yes No Check Power Supply does it agree with data sticker on air conditioner Yes ...

Страница 48: ...tion from avg voltage ______________volts Voltage imbalance 100 x Max Deviation avg Voltage ___________ A voltage deviation greater than 2 with the unit running should be addressed and corrected Excess voltage deviation can cause the compressor to overheat and to operate inefficiently Example Maximum Deviation from Average Voltage X 100 for Percent Average voltage Measured Voltages L1 L2 241 Volts...

Страница 49: ...Temp ________ ________ Evap Leaving Air WB Temp ________ ________ Heater Contactor Amps L1 ________ ________ Heater Contactor Amps L2 ________ ________ Heater Contactor Amps L3 ________ ________ E Cooling Mode Check Record Refrigerant Pressures Recheck voltage imbalance in cooling mode Measured Line to Line Volts L1 L2_______V L1 L3 ________V L2 L3______V L1 L2 L1 L3 L2 L3 3 Avg Voltage __________...

Страница 50: ...pressor Amps L3 ________ ________ Notes _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ ________________________________________________________________...

Страница 51: ...e on all four sides of the supply outlet duct flange on the unit The 1 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 Ducting Extensions should be cut flush with the inside wall for applicati...

Страница 52: ... other heaters 6 Install the two No 10 screws in the heater assembly plate 7 Install wire harness in hole provided in drain pan and then through filter bracket and then into control box 8 Wire the heater as shown in the wiring diagram provided with the heater kit the insulated terminal ends are to be connected at the heater 9 Install pop tie in appropriate hole in back panel to secure wire 10 Inst...

Страница 53: ...Eubank 7AA1024A 1060A 8AA2036A 2060A I O Manual 03 2021 Rev 2 53 ...

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