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Universal Electronic Aquastat L7224U1002 Training Module

What you will learn. L7224U Product OverviewKey FeaturesInstallationSet UpTroubleshootingProduct Cross ReferenceL7224U Advantages. L7224U Universal Electronic Aquastat?. What is the L7224U1002?Universal electronic Aquastat that provides circulator, burner and boiler temperature control with electronic temperature sensing in an oil fired hydronic heating appliance. Provides status and diagnostic information through an LED display to enhance the diagnostic process..

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Universal Electronic Aquastat L7224U1002 Training Module

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    1. Universal Electronic Aquastat® L7224U1002 Training Module

    2. What you will learn L7224U Product Overview Key Features Installation Set Up Troubleshooting Product Cross Reference L7224U Advantages

    3. L7224U Universal Electronic Aquastat® What is the L7224U1002? Universal electronic Aquastat that provides circulator, burner and boiler temperature control with electronic temperature sensing in an oil fired hydronic heating appliance. Provides status and diagnostic information through an LED display to enhance the diagnostic process.

    4. Aquastat® Key Features

    5. L7224U Universal Electronic Aquastat Why choose the Honeywell L7224U1002? Universal Compatibility Replaces over 40 existing Honeywell controls Easy Installation Redesigned to simplify wiring Direct or remote mount Superior Performance and Accuracy +/- 2 degree accuracy Multi-Function LED Display Speeds installation and troubleshooting Push button product set up & configuration Get set point, temperature and diagnostic info EnviraCOMTM communications enabled Easily add outdoor reset with 3 wires Remote diagnostics OnWatch Diagnotic compatible

    6. Additional L7224U features Remote 48” sensors available One Amp slow-blow fuse Improved terminal layout and multiple knockouts Vertical, Horizontal, and Flush-Mounting - configurable for single-function use Low Limit can be disabled (cold start boiler applications) Outdoor reset functionality enabled when combined with W8735S1000 AquaReset® kit

    7. L7224U Features

    8. Ranges and Ratings

    9. Installation

    10. Wiring of the L7224U

    11. Wiring of the L7224U -- Thermostat

    12. Wiring of the L7224U – Line Voltage

    13. Connecting AquaReset®

    14. Connecting AquaReset®

    15. Set Up

    16. Set Up of the L7224U To adjust the settings Press the UP, DOWN, and I buttons simultaneously for three seconds Press the I button until the desired feature is displayed Then press UP and/or DOWN to move the set points to desired values After 60 seconds without any buttons pressed, the control automatically goes back to READ mode Display In RUN mode the Aquastat will flash boiler temp (bt) followed by the temperature To read settings press the I key to scroll thought the functions

    17. Set Point Adjustments

    18. L7224U Electronic Aquastats® (LED LIGHTS)

    19. Digital Readout of System Conditions

    20. Digital Readout of System Outdoor Reset Functions

    21. L7224U Electronic Aquastats® (Digital Readout of System Conditions)

    22. Troubleshooting

    23. Is there an error code on the display? Error Code Cause/Action Err 1 Sensor fault; check sensor Err 2 ECOM fault; check EnviraCOM™ wiring Err 3 Hardware fault; replace control Err 4 B1 fault; check B1 wiring/voltage Err 5 Low line voltage; check L1-L2 110 Vac Err 6 Fuse; check ECOM wires, replace fuse Err 7 EEPROM, HL, LL, Hdf, Ldf; Reset to default values. Restore desired settings. Err 8 Repeated B1 fault (voltage present at B1 when output is turned off); check B1 wiring/voltage Troubleshooting: L7224U Electronic Aquastats® (Error Codes)

    24. Is there an error code on the display? Error Code Cause/Action Err 9 Outdoor reset system failure, check wiring Err 10 Boost Failure, check outdoor reset curve settings Err 11 Domestic Hot Water module failure, check wiring Error codes 9, 10 and 11 only apply when AquaReset and/or Domestic Hot Water priority modules connected to Aquastat Troubleshooting: L7224U Electronic Aquastats® (AquaReset Error codes)

    25. Troubleshooting: L7224U Electronic Aquastats®

    26. Product Cross Reference

    27. Product Cross Reference Where do I find Honeywell universal electronic aquastat cross reference information? www.customer.honeywell.com Honeywell Application Selection and Cross Reference Guide – Form 63-9575 Honeywell Laminated Truck Visor – Form 63-9581O Honeywell Residential Technical Support: 1-800-468-1502

    28. Aquastat® Cross Reference Table

    29. www.customer.honeywell.com See Cross Reference Search box in right column.

    30. L7224U Advantages When promoting the Honeywell L7224U1002 keep these advantages in mind: This Universal control replaces over 40 existing Honeywell controls. Save time searching for the exact replacement parts Stock less parts on the shelf and in the truck Installation is easy with this redesigned control. Wiring has been simplified Mounting choices - control can be direct or remote mount Performance and accuracy are superior to past controls. +/- 2 degree accuracy The multi-function LED display means less time spent on installation and troubleshooting. Push button product set up & configuration EnviraCOMTM communications enabled is an added advantage providing remote diagnostic capabilities.

    31. L7224U Universal Electronic Aquastat Knowledge Test Now that you completed this training module, take the short quiz to test your knowledge.

    32. Test The L7224U provides temperature control of circulators, burners and boilers with electronic temperature sensing? T of F The L7224U is considered a single function aquastat which provides high limit and low limit control? T or F The L7224U is accurate within +/- 2 degrees? T or F A 48” sensor is available to accommodate application requirements? T or F Setpoints are easily adjusted with the up and down push buttons? T or F

    33. Test The “I” button cycles through settings and conditions? T or F Error codes can be read only through the LED display? T or F The low limit can be disabled for a cold start boiler application? T or F Honeywell provides cross reference information for replacing over 40 existing controls? T or F The L7224U has a LED light that shows whether the burner is energized? T or F

    34. Answer Key T F T T T T F T T T

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