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13
System inspection and maintenance
Fig. 73 Cleaning brushes
▶ Clean the flue gas passages, starting at the front and working toward
the back with cleaning brushes 1 and 2 ( Fig. 74, [1 and 3]).
▶ Clean the rear wall of the combustion chamber with cleaning brush 3.
▶ Clean the rest of the combustion chamber ( Fig. 74, [2]) with
cleaning brush 2.
3
2
1
Fig. 74 Heat exchanger flue gas passages, cleaning
▶ Undo both self-tapping screws on the connecting plate and remove
connecting plate.
▶ Remove the two self-tapping screws on the left and right-hand side of
the lower rear boiler panel section.
▶ Lift up the bottom rear boiler panel sections slightly and take out
toward the rear.
▶ Undo the spring hooks below the flue outlet, fold up the thermal
insulation and attach via the spring hooks ( Fig. 75, [1]).
▶ Remove the cleanout covers from the rear section ( Fig. 75, [2])
and on the draft diverter ( Fig. 75, [3]).
▶ Remove all loose combustion residues from the combustion
chamber, the flue gas passages and the draft diverter.
▶ Check sealant ropes on the cleanout openings and burner door.
Replace damaged or hardened sealant ropes.
40
1
2
3
3
720 42 23- 9.1o
Fig. 75 Removing the cleanout cover.
▶ Clean flue gas baffles with the cleaning brushes.
▶ Insert the flue gas baffle plates in the flue gas passages
( Chapter 7.8.5, page 22).
▶ Fasten cleanout cover and tighten the screws evenly.
▶ Close the burner door and tighten the screws evenly.
▶ Fold the rear section thermal insulation down and pull together under
the flue outlet using the spring hook ( Fig. 76, [1]).
720 42 23-70.1o
Fig. 76 Pull rear section thermal insulation together
▶ Hang the bottom rear boiler panel sections on the left and right into
the slots in the folded edge of the upper rear boiler panel and the side
panel and screw the connecting plate below the flue outlet onto the
bottom rear boiler sections.
You can obtain sealant ropes from your local Buderus
wholesaler.
Logano G515 – 6 720 647 208 (2014/09)
1
2
720 42 23-71.1o
1
720 42 23-72.1o
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