Ideal Boilers Classic RS 300 Installation & Servicing Manual

Ideal Boilers Classic RS 300 Installation & Servicing Manual Manual pdf 26 page image

26Classic RS - Installation & ServicingSERVICINGNote.Refer also to Frame 53 of 'Exploded Views' forillustration of the procedure detailed below.cla 6034Gas cock unionGas cock644 GAS CONTROL VALVE REPLACEMENT1. Refer to Frame 36.2. Remove the burner and air box assembly. Refer to Frame 43.3. Remove the control box securing screws. Pull the box forwardand downward to disengage.4. Remove the gas control valve electrical connection.5. Disconnect and remove the gas union from the gas controlvalve.6. Whilst supporting the gas control valve, remove the 2screws retaining the manifold to the back panel.7. Remove the gas control / manifold assembly.8. Remove the 4 screws retaining the manifold to the gas controlvalve and fit the new manifold to the gas control valve, ensuringthat it is fitted the correct way round (an arrow engraved on theback indicates the direction of flow).Note.Remove the gas cock stub and refit into the new gascontrol valve. Use an approved jointing compound on the pipestub.9. Reassemble in reverse order.10. Replace the boiler casing.11. Check the gas valve operation.46 COMBUSTION CHAMBER INSULATION REPLACEMENT1. Refer to Frame 36.2. Remove the burner and air boxassembly. Refer to Frame 43.3. Remove the 4 tie rods.4. Remove the combustion chamber.5. Remove the 2 side panel retainingbrackets.6. Remove the side insulation panels.7. Remove the front and rearinsulation panels.8. Fit the new front and rearinsulation panels.9. Fit the new side panels andretain with the brackets andscrews previously removed.10. Reassemble in reverse order.4. Transfer,one by one (to avoid confusion), all push-inconnectors to the new PCB.5. Compress the barbs on the PCB stand-offs to release thePCB from the box.6. Fit the new PCB and reassemble in reverse order.7. Refit the boiler casing.8. Check the operation of the boiler.45 PRINTED CIRCUIT BOARD (PCB) REPLACEMENTNote.Refer to Frame 52 of 'Exploded Views' forillustration of the procedure detailed below.1. Refer to Frame 36.2. Remove the control box fixing screws. Pull the boxforward and downward to disengage.3. Remove the HT lead from the PCB.SERVICING