Baxi 47 075 35 Installation & Servicing Instructions Manual page 56

Fig. 69 and Fig. 70
page 40
14.3 Fan (Fig. 71)
1. Undo the nut on the gas inlet pipe to the venturi (Fig. 49) and pull the sensing pipe off the fan.
2. Disconnect the electrode leads, noting their position and disconnect the fan electrical plugs.
3. Undo the screws securing the collector to the extension piece.
4. Remove the collector and fan assembly, being careful to retain the injector in the venturi.
5. Undo the screws securing the fan to the venturi and fit the new fan, replacing the seal if necessary.