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Eubank 7AA1024A-1060A & 7AA2036A-2060A I&O Manual

07/2021 Rev.3

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Содержание Eubank 7AA1024A

Страница 1: ...n 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...

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 eq...

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...

Страница 4: ...lpy Sensor Temperature Control Points 19 Figure 4 Electrical Controls Alternate Construction 19 Figure 5 Economizer Control Board 20 Figure 6a Setting the Speed for the Y1 and Y2 Operation for Indoor...

Страница 5: ...ontrol board is in Section 1 6 All models are designed for easy installation and service Major components are accessible for service beneath external panels Allunitshaveinternaldisconnects optionalon3...

Страница 6: ...2048A 1900 1850 1800 1700 1600 1500 1350 7AA2060A 1900 1850 1800 1700 1600 1500 1350 Values in bold are the minimum air flow Air flow ratings of 208 230 volt units are at 230v Air flow ratings of 460...

Страница 7: ...ntrol 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 E...

Страница 8: ...or instructions on field installing electric heaters Economizer Operation Theeconomizerisaregulateddampersystemwithcontrols Thedamperregulatesthecirculationofoutside air into the enclosure when the ou...

Страница 9: ...tective coating on exterior and interior components and sheet metal Note the internal sheet metal which is insulated bottom outside panel and the internal control box are not coated Hot Gas Bypass Non...

Страница 10: ...is not common For harsh conditions e g power plants paper mills or sites were the unit will be exposed to salt water the condenser coil should be coated Note Cooling capacity may be reduced by up to 5...

Страница 11: ...tal or only the exterior sheet metal 1 7 Electrical Operation The compressor and condenser fan are energized with a contactor controlled by a 24 VAC pilot signal Some compressors incorporate an intern...

Страница 12: ...MRPESSOR 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 REH...

Страница 13: ...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...

Страница 14: ...14 Eubank 7AA1024A 1060A 7AA2036A 2060A I O Manual 07 2021 Rev 3 Figure 1c Typical Electrical Schematic w Economizer Alternate Construction...

Страница 15: ...Eubank 7AA1024A 1060A 7AA2036A 2060A I O Manual 07 2021 Rev 3 15 Figure 1d Typical Electrical Schematic w Economizer Alternate Construction...

Страница 16: ...16 Eubank 7AA1024A 1060A 7AA2036A 2060A I O Manual 07 2021 Rev 3 Figure 1e Typical Electrical Schematic w Economizer Alternate Construction...

Страница 17: ...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 select...

Страница 18: ...inimum 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...

Страница 19: ...currentlytheonlybrandofsensorsusedintheairconditioners 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...

Страница 20: ...n 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 setti...

Страница 21: ...e 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...

Страница 22: ...essure 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 Reh...

Страница 23: ...ate 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...

Страница 24: ...tentiometer 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 Corre...

Страница 25: ...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...

Страница 26: ...mmissioning 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 syst...

Страница 27: ...ollows 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 a...

Страница 28: ...y 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 Capac...

Страница 29: ...ng 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...

Страница 30: ...sor 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...

Страница 31: ...ng 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...

Страница 32: ...r 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 hardwar...

Страница 33: ...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 inch...

Страница 34: ...hange 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 1042...

Страница 35: ...t 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 instructions wi...

Страница 36: ...uld 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 M...

Страница 37: ...e 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 wal...

Страница 38: ...stem 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...

Страница 39: ...wer 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 Lo...

Страница 40: ...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 s...

Страница 41: ...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 TRANSF...

Страница 42: ...izer 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...

Страница 43: ...ase 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 c...

Страница 44: ...improper connection in field wiring 3 Internal short circuit Loose or improper connection s in unit 4 Excessively high or low supply volt age or phase loss 3 only 1 Note electrical requirements in Ch...

Страница 45: ...leakage with a megoh meter Attach one lead to the compressor case on a bare metal tube and to each compressor terminal to test the motor windings A short circuit at high voltages indicates a motor def...

Страница 46: ...ed before restarting Condenser Periodicallyinspecttheoutdoorcondensercoilandthecabinetairreliefsfordirtorobstructions Remove foreign objects such as leaves paper etc If the condenser coil is dirty it...

Страница 47: ...y 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...

Страница 48: ...______________________ Compressor Model No ______________________________________________ Serial No ______________________________________________ B Pre Start Up Is there any shipping damage Yes No If...

Страница 49: ...ion 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...

Страница 50: ...emp ________ ________ Evap Leaving Air WB Temp ________ ________ Heater Contactor Amps L1 ________ ________ Heater Contactor Amps L2 ________ ________ Heater Contactor Amps L3 ________ ________ E Cool...

Страница 51: ...ressor Amps L3 ________ ________ Notes _________________________________________________________________________ _________________________________________________________________________ _____________...

Страница 52: ...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...

Страница 53: ...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 heat...

Страница 54: ...54 Eubank 7AA1024A 1060A 7AA2036A 2060A I O Manual 07 2021 Rev 3...

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