Bosch Condens 7000 F Installation And Maintenance Instructions For The Contractor page 39

Cleaning the heat exchanger mechanically
A cleaning blade is available as an accessory for dry-cleaning the heat
exchanger. Cleaning equipment for wet cleaning is also available as an
accessory.
The cleaning covers are always on the flow and return connection side,
which depends on whether the boiler is a right or left-hand version.
▶ Remove the clips [1] on the thermal insulation.
▶ Remove the thermal insulation [2] from the heat exchanger.
1
2
Fig. 51 Thermal insulation on the heat exchanger
[1] Clip
[2] Thermal insulation
▶ Undo fixing nuts on the cleaning covers [1] of the heat exchanger.
▶ Remove the cleaning covers.
1
Fig. 52 Removing the cleaning covers
[1] Cleaning cover
Condens 7000 F – 6720871560 (2019/11)
CAUTION:
Risk of injury from sharp edges of cleaning blade!
▶ To avoid injury, wear protective gloves when cleaning the boiler using
cleaning blades (accessories).
▶ Clean the heat exchanger hot gas flues horizontally and diagonally
using the cleaning blade.
1
Fig. 53 Cleaning the heat exchanger horizontally
[1] Cleaning blade (available as accessory)
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1
Fig. 54 Cleaning the heat exchanger diagonally
[1] Cleaning blade (available as accessory)
▶ Remove dirt particles from the condensation catch pan
(e.g. using a vacuum cleaner).
▶ Reinsert the dirt trap.
▶ Screw the cleaning cover back on or wet clean the heat exchanger.
▶ Make sure the covers and gaskets are positioned correctly.
▶ Replace faulty gaskets, observe replacement intervals.
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Inspection and maintenance
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