Ideal Boilers HE15 Installation And Servicing

Also see for HE15: Installation and servicing instructions User guide Installation and servicing User guide

47SERVICINGicos system - Installation and Servicing24InterpanelFlow pipesecuring bracketnm80452815 11 8Return pipesecuring bracket1819202722OverheatthermostatControlthermistorFlow pipe26Spring clip121713 14Refer also to Frames 7 & 8 - 'Boiler exploded view'.IMPORTANTBefore starting the removal procedure, protect the gas andelectrical controls with a waterproof sheet or plastic bag.1. Refer to Frames 50.2. Remove the boiler front, sealing and bottom panels.Refer to Frames 42 & 43.3. Drain the boiler. Refer to Frame 68.4. Remove the control box and place on one side. Refer toFrame 62.5. Remove the fan / venturi assembly and place on oneside. Refer to Frame 45.6. Remove the burner and place on one side. Refer toFrame 46.7. Remove the ignition and detection electrodes. Refer toFrames 56 & 57.8. Remove the spark generator. Refer to Frame 58.9. Release the flue from the turret. Refer to Frame 26.10. Remove the turret from the boiler. Refer to Frame 26.11. Release the silicon tubing from the sampling point.12. Release the electrical connection to the dry firethermistor.13. Release the M5 nut retaining the flue casting spring clipand remove the spring clip.14. Undo the 2 M5 x 10 flue spring clip retaining bracketscrews and remove the bracket.15. Remove the M5 x 10 screw retaining the flue casting.16. Remove the flue casting.70 HEAT EXCHANGER REPLACEMENT 17. Remove the automatic air vent. Refer to Frame 67.18. Remove the edge clip securing the dry fire thermistorwiring.19. Remove the blind grommet to gain access to the returnpipe securing bracket.20. Remove the M5 screw and remove the return pipesecuring bracket by sliding forwards.21. Remove the overheat thermostat and the controlthermistor. Refer to Frame 55.22. Remove the securing pin to release the flow pipe.23. Remove the condensate 'S' trap. Refer to Frame 47.24. Remove the 2 M5 screws securing the interpanel to theback panel.25. Slide the heat exchanger and interpanel assembly upwardto disengage and remove from the casing, complete withthe return pipe.26. Remove the 2 M6 countersunk screws, remove theinterpanel and transfer to the new heat exchanger.27. Remove the M5 screw and remove the flow pipe securingbracket.28. Remove the flow pipe and transfer to the new heatexchanger.29. Reassemble in reverse order, replacing gaskets or sealsif any sign of damage or deterioration is evident.Note.The heat exchanger is supplied with new combustionchamber insulation boards. These should be fitted (referto Frame 61) before the burner and fan / venturi assemblyand before the ignition and flame detection electrodes arereplaced.30. Refill the boiler. Refer to Frame 30.31. Check operation of the boiler. Refer to Frame 50.SERVICING