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11 MAINTENANCE
11.1 Annual service procedure
11.2 Annual service continued (syphon maintenance).
The boiler and the system must be inspected annually by an qualified competent gas safe registered engineer.
The boilers heat exchanger should be cleaned and inspected as stated below at each service interval.
► Detach the syphon cup (1) by rotating it a quarter turn to the
le and then pulling it out downwards.
► Remove the flexible hose (2) from the siphon base and the
sewage connection.
► Empty the syphon cup (3).
► Detach the syphon base (3) by pressing the three securing
clips in, while simultaneously pushing the siphon base
downwards (4).
► Remove the circlip and the plastic ball from the syphon base
(5).
► Clean the following components with water:
◉ the inside of syphon base
◉ plastic ball
◉ circlip
◉ syphon cup
◉ opening of the exhaust manifold
2
1
1
1
1
2
3
4
5
CAREFUL
► Aer completion of the Annual service
procedure all 26 (9) safety checks must be
performed and the results recorded within
the service & interim boiler work pages, at
the back of this manual.
► Some components can be very hot during and
just aer operating the appliance.
► For Health & Safety reasons the use of PPE is
recommended during the below procedure.
► Switch o the appliance and isolate the power supply at the fuse
spur, make safe the appliance before continuing (Ref TB118).
► Close the boiler gas isolation valve (test for let-by).
► Remove the room sealed cover of the boiler by loosening the two
Allen screws (A) and then liing the panel up and forward (B)
► Wait until the boiler has cooled down. This can be done by
opening a domestic hot water tap (with the power switched o).
A
B
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