44
11.4 Cleaning the Burner
15/21, 15/26, 26/36, 36/46 models
The procedure is as follows:
1. Combustion head: Loosen the two
screws securing the combustion
head and withdraw the head.
2. Clean the combustion head.
3. Inspect the ignition electrodes:
Loosen the electrode clamp
screw and withdraw the electrode
assembly. Wipe clean and check for
any cracks in the ceramic insulation.
Replace if necessary.
Boiler Servicing
IMPORTANT:
The ends of the
turbulators must
be vertical
Position in vertical plane
Figure 11-1: 15/21 baffles Figure 11-2: 15/26 baffles
Figure 11-3: 46/58 and 58/70 baffles (58/70 shown) and turbulators (all models)
Figure 11-4: 26/36 and 36/46 baffles
CAUTION
!
4. Nozzle: The nozzle should be
replaced on an annual service.
Check that the nozzle size and type
are correct, refer to table in Section
2.3 and boiler data label.
5. With the combustion head removed,
loosen the electrode assembly clamp
screw and slide the electrodes away
from the nozzle.
6. Do not attempt to clean the nozzle.
7. Remove the nozzle using a good
fitting spanner (16 mm).
The use of an ill-fitting spanner will
damage the nozzle and could lead to
an incorrect flame pattern.
8. Always check the electrode settings
after replacing the nozzle, see Figure
11-5.
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