Servicing The Boiler - Baxi Maxflow Combi WM Installation And Servicing Instructions

Outercase
Front Panel
Fig. 43
Combustion Box
Front Panel
Combustion Box
Inner Panel
Sensing Electrode
Spark Electrode
Burner
Securing Screw
Injector
Fig. 46
26
Sampling Screw
Fig. 45
Securing Screw
Injector Manifold
Sealing Washer
Gas Supply

10.0 Servicing the Boiler

10.1 Annual Servicing
1. For reasons of safety and economy, it is
Fig. 44
recommended that the boiler is serviced annually.
Servicing must be performed by a competent
person.
2. After servicing, complete the relevant section of
the "Benchmark" Installation, Commissioning and
Service Record Log Book. This should be in the
possession of the user.
3. Ensure that the boiler is cool.
4. Ensure that both the gas and electrical
supplies to the boiler are isolated.
5. Undo the two screws on the top edge of the
outercase front panel. Lift the panel slightly and
remove it (Fig. 43). Undo the screws securing the
combustion box front panel. Remove the panel,
being careful not to damage the seal (Fig. 45).
6. Undo the screws securing the combustion box
inner panel. Remove the panel and examine the
insulation piece (Fig. 45).
7. Hinge the facia panel down and remove the
screws securing the control panel. Lower the
control panel (Fig. 45).
8. Disconnect the gas supply from the burner inlet
manifold and remove the electrode lead from the
Spark electrode (Fig. 46).
9. Draw the burner forwards out of the combustion
box and disconnect the flame sensing lead. Take
care not to damage or lose the sealing washer on
the gas inlet flange (Fig. 46).
10. Note the positions of the two sensing tubes
and three wires on the pressure switch and
remove them.
11. Undo the screws securing the pressure switch
to the combustion box bracket and remove the
switch.
12. Remove the screws from the flue adaptor
clamp. Prise the clamp apart and disengage it from
the fan outlet adaptor and boiler flue adaptor.
Remove the clamp.
13. Note the positions of the three wires on the fan
motor and remove them. Remove the two screws
securing the flue hood forward edge.
14. Draw the fan and hood assembly forwards out
of the combustion box.