Saunier-Duval-Thema-Classic-F24e-Installation-manual

18 Replacement of Parts18.21 (F24E Only) Filling system tap, refer todiagram 18.12.Before starting refer to the front of Section 18 Importantinformation.• Remove the front panel, refer to Section 15.3.• Lower the control panel, refer to Section 15.4.• Drain down the hotwater circuit, refer to relevant part ofdiagram 18.1.• Pull of the filling loop tap extension.• Pull out slotted metal clip securing tap into housing, removetap.• Pull out slotted metal clip and remove pipe from tap.18.22 (F24E Only) Reduced pressure zonevalve (RPZ), refer to diagram 18.12.Before starting refer to the front of Section 18 Importantinformation.• Remove the front panel, refer to Section 15.3.• Lower the control panel, refer to Section 15.4.• Drain down the boiler only, refer to relevant part of diagram18.1.• Pull out slotted metal clip securing pipe to RPZ.• Pull out slotted metal clip securing RPZ into housing, removeRPZ.➜F24E only➜➜SYSTEM WATER PRESSURESENSOR➜➜BYPASS VALVE97589765WATER FLOWSENSOR Diagram 18.1418.23 Boiler drain point, refer to diagram18.13.Before starting refer to the front of Section 18 Importantinformation.• Remove the front panel, refer to Section 15.3.• Lower the control panel, refer to Section 15.4.• Drain down the boiler only, refer to relevant part of diagram18.1.Pull out slotted metal clip securing boiler drain valve intohousing, remove boiler drain valve.➜➜18.24 (F24E Only) Water flow sensor, refer todiagram 18.14.Before starting refer to the front of Section 18 Importantinformation.• Remove the front panel, refer to Section 15.3.• Lower the control panel, refer to Section 15.4.Drain down the hotwater circuit, refer to relevant part ofSection 18.1.• Undo the union nut on the cold water inlet isolating valve.• Pull out slotted metal clip securing filling system tap intohousing, swing the tap forwards.• Pull out the two slotted metal clips retaining the domesticwater inlet filter housing.• Remove domestic water inlet filter housing.• Remove electrical connections from water flow sensor.• Pull off slotted metal clip and remove water flow sensor.F24E shownCAPF24E shownDiagram 18.159760AIRVENTDiagram 18.1647 4000124050-2