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Wiring inside this appliance may potentially be at 120 volts.  \nDisconnect power supply to unit when carrying out the following service repairs.  \nRead Fault Diagnosis and Wiring Diagram carefully to avoid incorrect wiring.  \nDo not disassemble. Parts within can not be exchanged or diagnosed faulty.  \nPlease follow instructions in chapters to ensure safe and appropriate service.  \nAfter completing the service and confirming that there are no water or gas leaks or incorrect wiring, test operation of the appliance. After confirming normal operation, explain what was serviced to the customer and the operating principles, if necessary.  \nThe information in this manual was compiled by Rinnai Technical Services. While many individuals have contributed to this publication, it will be successful only if you – the reader and customer –find it useful. We would like to extend an invitation to users of this manual to make contact with us, as your feedback and suggestions are valuable resources for us to include as improvements. Rinnai is constantly working toward supplying improved appliances as well as information, and specifications may be subject to alteration at any time.  \nREU-2532FFU Series 2 Rinnai  \nGlossary of Terms and Symbols .............................................................................................................. 4  \n1. Introduction .................................................................................................................................. 5  \n2. Features ......................................................................................................................................... 6  \n3. Dimensions .................................................................................................................................... 8  \n4. Installation .................................................................................................................................... 9  \n5. Remote Controls ......................................................................................................................... 10  \n6. Safety Devices ............................................................................................................................. 12  \n7. Specification ................................................................................................................................ 14  \n8. Cut-away Diagram .................................................................................................................... 16  \n9. Schematic Diagram .................................................................................................................... 17  \n10. Combustion Specifications ........................................................................................................ 18  \n11. Dip Switch Positions ................................................................................................................... 19  \n12. Water Flows ................................................................................................................................ 22  \n13. Main Components ...................................................................................................................... 24  \n14. Time Charts ................................................................................................................................ 26  \n15. Operation Flow Principle .......................................................","cbCaieQYaGRmD0bi","https://ap.wps.com/l/cbCaieQYaGRmD0bi","pdf",2043896,72,"English","# Glossary of Terms and Symbols\n# 1. Introduction\n# 2. Features\n# 3. Dimensions\n# 4. Installation\n# 5. Remote Controls\n# 6. Safety Devices\n# 7. Specification\n# 8. Cut-away Diagram\n# 9. Schematic Diagram\n# 10. Combustion Specifications\n# 11. Dip Switch Positions\n# 12. Water Flows\n# 13. Main Components\n# 14. Time Charts\n# 15. Operation Flow Principle\n# 16. Operation Principles\n# 17. Error Messages\n# 18. Diagnostic Points\n# 19. Wiring Diagram\n# 20. Fault Diagnosis\n# 21. Electrical Component Analysis\n# 22. Gas Conversion\n# 23. Gas Pressure Setting Procedure\n# 24. Dismantling for Service\n# 25. Exploded Diagram\n# 26. Parts List","[{\"question\":\"What safety precautions does the manual require before performing service repairs?\",\"answer\":\"Disconnect the power supply to the unit when carrying out the specified service repairs, and follow chapter instructions to ensure safe and appropriate service. Read fault diagnosis and wiring diagram sections carefully to avoid incorrect wiring and watch for possible electric shock.\"},{\"question\":\"What should be done after completing a service repair?\",\"answer\":\"After finishing service and confirming there are no water or gas leaks and no incorrect wiring, test the appliance operation. If needed, explain to the customer what was serviced and the operating principles.\"},{\"question\":\"How does the manual support diagnosing errors and troubleshooting faults?\",\"answer\":\"It includes chapters for error messages, diagnostic points, wiring diagrams, and a dedicated fault diagnosis section. It also provides electrical component analysis to help identify causes and guide the repair process.\"}]","Continuum and Integrity - REU2532-FFU and REU2532-FFU-C Series Water Heaters Service Manual | PDF",181]