Heating system servicing
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6 720 648 162 (2011/08)
9
Heating system servicing
9.1
Why is regular maintenance
important?
Heating systems should be regularly maintained for the
following reasons:
•
to achieve a high level of efficiency and to operate the
system economically (low fuel consumption),
•
to achieve a high level of operational reliability,
•
to maintain the cleanest possible combustion,
•
to ensure reliable operation and long service life.
Servicing work may only be carried out by a qualified
service technician. If parts are replaced, only Bosch
approved components may be used. A service must be
carried out once a year. The results of the services must
be recorded in the servicing and maintenance log.
9.2
Preparing the boiler for servicing
B
Shut down the heating system. (
Æ
Chapter 8.1,
page 40)
B
Remove the burner door panel or the burner hood
from the boiler.
B
Disconnect electrical supply to burner.
9.3
Cleaning the boiler
The boiler can be cleaned with brushes and/or by a wet
method. Cleaning equipment is available as accessory.
B
Open burner door by removing the two hexagon bolts
on the sides.
9.3.1
Cleaning the boiler with brushes
B
Note the position of the flue gas baffle plates to
enable their correct re-installation later.
B
Remove the flue gas baffle plates from the flue gas
flues.
B
Clean the flue gas baffle plates with one of the two
cleaning brushes.
Fig. 61 Open the burner door
1
Combustion chamber
2
2. flue gas pass
3
1. flue gas pass
Spare parts can be ordered from Bosch
using the parts list.
DANGER:
Risk of death from electric shock.
B
Before working on the boiler and prior to
opening control panel:
shut down the power supply by turning
off the emergency shut-off switch or
disengaging the heating system circuit
breaker, and prevent from accidental
reactivation.
CAUTION:
Danger of Life Risk from
explosion of volatile gases.
B
Work on gas components must be carried
out by qualified and authorized
personnel only.
CAUTION:
Risk of burning by touching hot
boiler parts.
B
Wear appropriate protective personal
safety equipment.
1
3
2
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