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Zanussi ULTRA+ COMBI 30 Installation And Servicing Manual pdf 43 page image

Zanussi ULTRA+ COMBI 30 Installation And Servicing

Also see for ULTRA COMBI 30: User guideInstallation and servicing

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Contents
  1. Table Of Contents
  2. General
  3. safe handling
  4. gas supply
  5. air supply
  6. domestic hot water
  7. mounting the boiler
  8. flue terminal position
  9. condensate drain
  10. electrical connections
  11. external wiring
  12. commissioning and testing
  13. initial lighting
  14. Handing Over
  15. SERVICING
  16. Boiler Front Panel Removal / Replacement
  17. Burner Removal & Cleaning
  18. Cleaning the Heat Exchanger
  19. Replacement Of Components
  20. Burner Injector Replacement
  21. Ignition Electrode Replacement
  22. Flame Detection Electrode Replacement
  23. Diverter Valve Actuator Replacement
  24. PCB Replacement
  25. Draining The Boiler
  26. Pump Automatic Air Vent Replacement
  27. Diverter Valve Body Assembly Replacement
  28. CH Water Pressure Switch Replacement
  29. Expansion Vessel Recharging & Replacement
  30. FAULT FINDING
  31. L2' - Ignition Lockout
  32. L6' - False Flame Lockout
  33. F3' - Fan Fault
  34. F6' - Outside Sensor Fault
  35. No Display
  36. SPARE PARTS
  37. BENCHMARK & COMMISSIONING
  38. gas boiler system commissioning checklist
  39. service record
Zanussi ULTRA+ COMBI 30 Installation And Servicing Manual pdf 43 page image
43Installation and ServicingSECTION 3 - SERVICING3.8 REPLACEMENT OF COMPONENTSGENERALWhen replacing ANY component1. Isolate the electricity supply.2. Turn off the gas supply.3. Remove the boiler front panel. Refer to Section 3.2.4. Swing the control box down into its servicing position.After replacing ANY component check operation of the boiler,including gas soundness, gas rate and combustion test.IMPORTANT.When work is complete, the front panel must be correctlyrefitted - ensuring that a good seal is made.Notes.1. In order to assist fault finding, the control panel hasan LCD diagnostic display. The key to boiler faultconditions is shown in Section 4.2. In order to replace components in Sections 3.22-3.32 itis necessary to drain the boiler. Refer to Section 3.21.THE BOILER MUST NOT BE OPERATED WITHOUT THE FRONT PANEL FITTED3.9 FAN REPLACEMENT1. Refer to Section 3.8.2. Disconnect the electrical leads fromthe fan.3. Remove the clip from the gas controlvalve outlet.4. Remove the extended nut retainingthe fan mounting bracket.5. Lift and remove the fan and venturiassembly.6. Remove the screw and twist venturianti-clockwise to remove venturiassembly, noting the orientation ofthe venturi in relation to the fan body.7. Transfer the venturi assembly tothe new fan, replacing the ‘o’ ring ifevidence of damage or deteriorationis visible.8. Fit the new fan / venturi assemblyensuring the retaining tabs arecorrectly positioned and the fanoutlet sealing gasket is correctlypositioned and free from damage.Refit the extended nut.9. Reassemble the boiler in reverseorder, taking care not to overtightenthe screw on the fan mountingbracket and ensure all gas ‘o’ ringsare in place10. Check that the boiler operates inboth DHW and CH Modes.2468 Retaining Tabs3SERVICING
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ULTRA COMBI 30ULTRA COMBI 35
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