Cleaning The Combustion Chamber/Heating Surfaces And Fitting The Burner - Viessmann VITODENS 343-F WS4A Installation And Service Instructions Manual

Further details regarding the individual steps
Cleaning the combustion chamber/heating surfaces and fit-
ting the burner
Commissioning, inspection, maintenance
(cont.)
1. If required, clean heating
surfaces A with a brush or flush
with water.
!
Please note
Scratches on parts that are
in contact with flue gases
can lead to corrosion.
Only use plastic brushes and
NOT wire brushes.
Apply a solvent/potassium-free
cleaning agent if residues remain:
Remove soot deposits with alka-
line cleaning agents with addi-
tional surfactants (e.g.
Fauch 600).
Remove coatings and surface
discolouration (yellow-brown)
with slightly acidic, chloride-free
cleaning agents based on phos-
phoric acid (e.g. Antox 75 E).
Thoroughly flush with water.
Note
Fauch 600 and Antox 75 E are sup-
plied by
Hebro Chemie GmbH
Rostocker Straße 40
D 41199 Mönchengladbach
2. Install the burner and torque nuts
diagonally with 4 Nm.
3. Fit the gas supply pipe with a new
gasket.
39