11.0
Servicing the Boiler
28
11.1
Annual Servicing (Cont)
11. 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. 41).
12. Undo the screws securing the fan and hood to
the appliance back panel. Draw the assembly
forwards (Fig. 42).
13. Undo the screws securing the burner to the
injector manifold (28e model only). Draw the
burner out of the combustion box, pulling the
electrode grommets from the slots in the
combustion box lower panel (Fig. 43).
14. Disconnect the electrode leads and grommets
from the electrodes. Completely remove the
burner (Fig. 43).
15. Brush any deposits from the injectors. Do not
use a pin or wire to clean them.
16. Brush the burner blades and venturis and
clean the combustion box.
17. Ensure that the heat exchanger fins are clear
of any obstruction.
18. Check that the pressure vessel charge is
0.5bar and reassemble in reverse order of
dismantling.
19. Turn the selector switch fully anticlockwise
against the spring pressure to position R and hold
for 2 seconds to reset the boiler before
recommissioning.
20. 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
Fig. 41
Fig. 43
Fig. 42
Summary of Contents for Performa System 12e
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