Baxi Eco 3 Service Manual download pdf (Page 26)

11.0 Servicing the Boiler

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. 52).

11. Undo the screws securing the fan hood

assembly to the appliance back panel, and draw

the fan and hood assembly forwards (Fig. 51).

12. Draw the burner out of the combustion box,

pulling the electrode grommets from the slots in

the combustion box lower panel (Fig. 53).

13. Disconnect the electrode leads and grommets

from the electrodes. Completely remove the

burner (Fig. 53).

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.

D.H.W. Filters

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. 53a).

20. Extract the filter and rinse thoroughly in clean

water. Reassemble and check the flow. If

required clean the manifold filter as described

below.

21. Undo the filter cartridge from the inlet/return

manifold (Fig. 56).

22. Dismantle the cartridge and carefully remove

the flow regulator and filter gauze. Rinse them

thoroughly in clean water and reassemble in

reverse order (Fig. 55).

23. Check that the pressure vessel charge is

0.5bar, reassemble in reverse order of

dismantling and recommission.

24. Complete the relevant section of the

“Benchmark” Installation, Commissioning and

Service Record Log Book and hand it back to the

user.

Spring Clip

Fan and Hood

Assembly

Baffle

Tab

Burner

Electrode

Grommets

Electrode

Leads

Inlet / Return Manifold

Cartridge

Body

Filter Gauze

Flow

Regulator

Venturi

Gas Supply Pipe

Blanking

Cap

Cold Water

Inlet Tap

Threaded

Bush

Fig. 51

Fig. 52

Fig. 53

Fig. 55

Fig. 56

Fig. 53a

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Baxi Eco 3 Service Manual Page 26

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