Ideal Boilers Classic FF 230 Installation And Servicing Manual

Also see for Classic Combi FF 280: Installation and servicing User guide

Ideal Boilers Classic FF 230 Installation And Servicing Manual Manual pdf 29 page image

Classic LXFF, FF - Installation 29SERVICINGSERVICINGRefer also to Frame 54.Remove the control box fixing screw (A). Pull thebox forward and downward to disengage.Thermostat control1. Pull the knob off the shaft.2. Remove the backnut securing the thermostatcontrol to the control box.3. Pull off the Molex connector from the printedcircuit board.4. Replace and re-assemble in reverse order.Thermistor sensor lead5. Pull the sensor lead connector off the printedcircuit board.6. Remove the sensor from the heat exchangerpocket and unclip from the back panel.7. Remove the strain relief bush from the backpanel base.8. Remove the sensor lead through the grommet inthe control box.9. Replace and re-assemble in reverse order.On/off switch10. Disconnect the electrical connectors from therear of the switch.11. Press in the 2 side retaining clips and removethe switch.12. Re-assemble in reverse order.57 THERMOSTAT CONTROL, THERMISTOR SENSOR LEAD and ON/OFF SWITCHREPLACEMENT58 PILOT BURNER REPLACEMENT1. Refer to Frame 54.2. Remove the burner and air box assembly.Refer to Frame 49.3. Remove the electrode retaining nut and remove the pilotshield and electrode.4. Unscrew the central pilot fixing screw and lift the pilot clearof the pilot injector. The pilot injector may now beunscrewed if required.5. Replace the pilot burner (injector if necessary) and retainwith the M4 screw previously removed. Ensure that thecopper sealing washer is replaced when refitting the pilotinjector.6. Replace the electrode and pilot shield, retaining both withthe electrode nut. Check the spark gap.7. Replace the box assembly.8. Replace the burner.9. Replace the boiler casing.10. The pilot is factory set to maximum and no furtheradjustment is possible. Ensure that there is an inletpressure of 20 mbar available. Also check burner ignitionand cross-lighting.