Ideal Boilers isar m30100 Installation And Servicing

36SERVICINGisar - Installation and Servicing54 BURNER REPLACEMENT1. Refer to Frame 50.2. Remove the boiler front and sealing panels. Refer to Frames42 & 43.3. Remove the fan assembly. Refer to Frame 52.4. Remove the 6 screws securing the burner (the 3 screws at therear are extended to ease access).5. Lift off the burner from the combustion chamber.6. Fit the new burner, replacing any damaged or deterioratingsealing gasket.7. Reassemble in reverse order.8. Check the operation of the boiler. Refer to Frame 50.Note.Take care not to disturb the detection earth probe at therear of the combustion chamber.53 BURNER INJECTOR REPLACEMENT1. Refer to Frame 50.2. Remove the boiler front and sealing panels. Refer toFrames 42 & 43.3. Disconnect the electrical leads from the fan.4. Undo the gas pipe union connection to the injector housing.5. Remove the screw retaining the fan mounting bracket.6. Remove the fan and venturi assembly7. Remove the 2 injector housing screws.8. Withdraw the injector housing.9. Fit the new injector housing complete with injector.10. Reassemble in reverse order, ensuring that the new gasseal supplied is located correctly in the injector housing.11. Check operation of the boiler. Refer to Frame 50. Mounting bracket7Ecl 24005InjectorFanGas pipe unionOverheat thermostatControl thermistorFlowpipeReturn thermistorReturn pipe203755 CONTROL THERMISTOR, RETURN THERMISTOR & OVERHEAT ‘STAT REPLACEMENT1. Refer to Frame 50.2. Remove the boiler front and sealing panels.Refer to Frames 42 & 43.3. Unclip the thermistor / thermostat from the flow / return pipe andwithdraw it from the controls compartment.4. Disconnect the electrical leads from thethermistor / thermostat.5. Reconnect the electrical leads andreassemble in reverse order, ensuring that thespring clip is securely on the pipe.6. Check the operation of the boiler. Refer toFrame 50.SERVICING