Cleaning The Heat Exchanger - Buderus Logano plus GB402 Installation And Maintenance Instructions Manual

9 Inspection and maintenance
▶ Undo all 4 screws [1] between the mixture manifold and the carriage.
Fig. 48 Undoing the mixture manifold from the carriage
[1] Screws and locknuts
▶ Pull out the burner together with the mixture manifold.
Fig. 49 Removing the burner
▶ Blow off the burner rods and mixture manifold from the inside and
outside using a reasonable amount of compressed air (max. 3 bar).
If there is heavy contamination, the burner rod can be separated from
the mixture manifold and a blow gun with a long, angled blow pipe can be
used to blow them off from the inside and outside using a reasonable
amount of compressed air (max. 3 bar).
▶ Re-install the burner rod with a new gasket.
34

9.6.2 Cleaning the heat exchanger

Dry cleaning the heat exchanger
▶ Remove the thermal insulation from the heat exchanger.
Fig. 50 Heat exchanger thermal insulation
[1] Clamp
[2] Thermal insulation
▶ Undo fixing nuts from cleaning covers [1] at the top and bottom of the
heat exchanger.
▶ Remove the cleaning covers.
Fig. 51 Opening the cleaning covers
[1] Cleaning cover
▶ Undo the fixing nuts from the top and bottom of the condensate pan
cover.
▶ Removing the cover.
CAUTION: Risk of injury from sharp edges on the
cleaning blades.
▶ To avoid injury, wear gloves when cleaning the boiler
using cleaning blades (accessories).
Logano plus GB402 – 6 720 804 428 (2012/09)