Baxi Combi 105e Installation And Servicing Instructions page 27

Baffle
Tab
11.0 Servicing the Boiler
Spring Clip
11.1 Annual Servicing (Cont)
10. Remove the spring clips retaining the air box
side baffle plates. Disengage the tabs on the
baffles from the slots in the fan hood (Fig. 42).
11. Undo the screws securing the fan and hood to
the appliance back panel. Draw the assembly
Fig. 42
forwards (Fig. 42a).
Fan and Hood
Assembly
12. Undo the screws securing the burner to the
injector manifold (105e model only). Draw the
Fig. 42a
burner out of the combustion box, pulling the
electrode grommets from the slots in the
combustion box lower panel (Fig. 43).
13. Disconnect the electrode leads and grommets
from the electrodes. Completely remove the
burner (Fig. 43).
14. Brush any deposits from the injectors. Do not
use a pin or wire to clean them.
15. Brush the burner blades and venturis and
clean the combustion box.
16. Ensure that the heat exchanger fins are clear
of any obstruction.
Electrode
DHW Filters (Fig. 44)
Grommets
17. If the flow of domestic hot water is diminished,
it may be necessary to clean the filters.
18. Initially check the cold water inlet tap filter.
19. Turn the tap off. Undo the blanking cap and
remove the threaded bush (Fig. 43a).
20. Extract the filter and rinse thoroughly in clean
Fig. 43 water. Reassemble and check the flow. If
Fig. 43a
Threaded
required clean the manifold filter as described
Burner
Bush
below.
21. Undo the filter cartridge from the inlet/return
manifold.
22. Dismantle the cartridge and carefully remove
the flow regulator and filter gauze. Rinse them
thoroughly in clean water and reassemble in
reverse order.
23. Check that the pressure vessel charge is
Blanking Cold Water 0.5bar, reassemble in reverse order of
Inlet Tap
dismantling and recommission.
Cap
24. Turn the selector switch fully anticlockwise
against the spring pressure to the reset position
and hold for 2 seconds to reset the boiler.
Cartridge
Body
25. Complete the relevant section of the
Filter Gauze
"Benchmark" Installation, Commissioning and
Service Record Log Book and hand it back to the
user.
Flow
Regulator
Venturi
Fig. 44
Inlet/Return Manifold
27