Cleaning The Combustion Chamber; Cleaning The Flue Gas Box; Chemical Sweeping - DeDietrich GT 430 Service Manual

10.1.3 Cleaning the combustion chamber

- Unscrew the 4 closing nuts and open the furnace door
- Brush out the inside of the furnace
- Use a vacuum cleaner to remove any soot which has accumulated in the combustion chamber
- Close the door and replace the front panel.

10.1.4 Cleaning the flue gas box

To do so:
- Open the left and right cleaning hatches on the flue gas box (2 nuts H 12 + flat washers with a 19 mm spanner) and remove any soot which
has accumulated using a vacuum cleaner.
- Replace the cleaning hatches.

10.2 Chemical sweeping

General principle
Boilers are traidtionally swept mechanically. There are now chemical
sweeping methods which facilitate this maintenance work.
A chemical reagent is applied to the boiler's heating surfaces.
After application, the reaction is completed by igniting the burner. The
initial deposits are neutralised and pyrolised. The remaining
pulverent residues are easy to remove by sweeping or vacuum
cleaning.
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03/12/07 - 300011893-001-B GT 430