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SHUTDOWN
5.3 Cleaning the boiler
Clean the boiler and remove any carbon deposits from the sur-
faces of the heat exchanger at least once a year. This not only ex-
tends the boiler’s working life, but also keeps it efcient in terms
of heat output and fuel consumption.
Proceed as follows to clean the boiler:
− Open the front door (1) and remove turbolators (2)
− Use a ue brush (3) or other suitable tool to clean inside the
combustion chamber and the ue gas pipes
9
The rst time opening the door, remove the spare hinge as-
sembly (B) (bushing, bolt, and washer) opposite the pivot side
of the door.
Remove the deposits accumulated in the ue box through the
opening of the inspection door (4).
If more thorough cleaning is required, remove the outer panels,
unscrew the eight xing bolts (5) and pull rmly on the ue gas
box (6) to remove it from the boiler.
Check at regular intervals that the condensate drain (7) is not
blocked.
6
5
4
7
If necessary, replace the seal (8).
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On completion of cleaning, follow the above steps in the reverse
order to ret all removed parts.
Use a tightening force of 8 Nm/6 ft-lbs on the retaining nuts.
8 Nm/6 ft-lbs
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