Potterton SIRIUS FS Installation & Servicing Instructions Manual page 53

7.2 SERVICE ACCESS TO COMPONENTS - SIDE & REAR
When performing a service or part replacement, in order to gain better access to the components at the
rear and side of the boiler, the following panels can be removed:
6 Remove six screws to reveal access to: Flow sensor, water pressure transmitter & flow over
heat cutoff device
7 Remove six screws to reveal access to: Return sensor, Cascade sensor, condense / blocked
flue pressure switch, condense pipe work, upstanding pipe work couplers
8 Remove four screws to reveal access to: Flue sample point & rear overheat protection fuse
9 Remove four screws to reveal access to: Rear overheat protection fuse
10 Remove two screws to reveal access to: Adjustable levelling feet
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