Ideal Boilers isar m30100 Installation And Servicing

44SERVICINGisar - Installation and Servicing69 DRAINING THE BOILER1. Refer to frame 50.2. Remove the boiler bottom panel. Refer to Frame 43.3. Close all the water isolating valves on the pipingframe.4. Attach a length of hose to the drain point and openthe drain valve.5. After replacing any component on the boiler,close the drain valve, remove the hose and openall system isolating valves before proceeding tocheck operation of the boiler.6. Check operation of the boiler. Refer to Frame 5070 DIVERTER VALVE MECHANISM REPLACEMENT1. Refer to Frame 50.2. Remove the casing front & bottom panel.Refer to Frames 42 & 43.3. Drain the boiler. Refer to Frame 69.4. Remove the 4 screws retaining the rearsupport plate and withdraw the plate. Refer toFrame 67.Note.The M4 screws fit the casing and the self-tapping screws fit the plastic pump andvalve housings.5. Remove the valve actuator head. Refer toFrame 60.6. Remove the 4 Allen screws and remove thevalve mechanism.7. Fit the new valve mechanism and gasket,ensuring correct fit over the location pin.8. Reassemble in reverse order, ensuring correctlocation of screws in the support plate and thattabs on the pump and valve housings engage inslots.9. Refill the boiler. Refer to Frame 29.10. Check operation of the boiler. Refer toFrame 50.isolating valve(shown closed)Isolating valvesDrain pointDrain valve2099TO OPENecl 6081Valve mechanismLocatingpin holeGasket6SERVICING