35
12.0 Servicing
© Baxi Heating UK Ltd 2016
12.2
Annual Servicing Inspection (Cont)
5. Remove the clip securing the gas feed pipe to the air/gas
venturi. Disconnect the pipe. Do not break the joint between
the pipe and gas valve unless necessary.
6. Disconnect the electrode leads, noting their position, and
the fan electrical plugs (Fig. 46).
7. Undo the four nuts retaining the combustion box cover to
the heat exchanger.
8. Carefully draw the fan, collector and cover assembly
forward (Figs. 46).
9. Clean any debris from the heat exchanger and check that
the gaps between the tubes are clear.
10. Inspect the burner, insulation and position & condition of
the electrodes, cleaning or replacing if necessary. Clean any
dirt or dust from the air box.
11. Carefully examine all seals & gaskets, replacing as
necessary. Look for any evidence of leaks or corrosion, and if
found determine & rectify the cause.
12. Reassemble in reverse order, ensuring the front case panel
is securely fitted.
DHW Filter & Turbine Assy.
(Fig. 48)
13. If the flow of domestic hot water is diminished, it may be
necessary to clean the filter. In areas of harder water it is
recommended that this is performed annually.
14. Turn the DHW isolation cock (Fig. 47) off and draw off
from a hot tap.
15. Remove the retaining clip and extract the filter cartridge
and rinse thoroughly in clean water. Reassemble and check
the flow. Ensure that the turbine spins freely.
16. Recommission the boiler as described in Section 10.0.
17. Complete the relevant Service Interval Record section of
the Benchmark Commissioning Checklist at the rear of this
publication and then hand it back to the user.
Fig. 46
DHW Isolation
Cock
Fig. 47
Fan, Collector and Cover
Assembly
Electrode
Leads
Electrode Position
Control Box removed
for clarity
Fig. 45
Gas Feed Pipe
Securing Clip
5
±
1
4
±
0.5
10 ±1
Spark Ignition
Electrode
Flame
Sensing
Electrode
View underneath
appliance
Hall Effect
Sensor
Hydraulic Inlet
Assembly
Fig. 48
Restrictor
(not on 40 models)
Filter
Содержание Promax 24 Combi ErP
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Страница 57: ...57 Baxi Heating UK Ltd 2016 19 0 Notes ...