Viessmann VITOCROSSAL 300, Service Instructions Manual

Page: 10 / 36

3. Clean the inside of the condensate
drain with a plastic brush. 4. Connect the drain hose to the con-
densate drain and run to a sewer.
Cleaning the combustion chamber and heating surfaces
!
Please note
Contact with unalloyed iron
and scratches on parts in con-
tact with flue gases can lead to
corrosion.
Only use plastic brushes, NOT
wire brushes or sharp objects.
1. Clean the combustion chamber
and the heating surfaces.
& For normal cleaning, flush the
heating surfaces with a water jet.
& However, you may use cleaning
agents if you notice stubborn
residues, surface discolouration
or soot deposits.
For this, observe the following:
–
Only use solvent-free cleaning
agents. Ensure that no cleaning
agent enters between the boiler
body and the thermal insula-
tion.
–
Remove soot deposits with
alkaline cleaning agents with
additional surfactants (e.g.
Fauch 600).
–
Remove coatings and surface
discolouration (yellow-brown)
with slightly acidic, chloride-
free cleaning agents based on
phosphoric acid (for example,
Antox 75 E).
2. Remove loose deposits from the
boiler; flush the heating surfaces
and the flue gas header thoroughly
with a water jet.
Danger
Loose residues and residual
cleaning agents can lead to
injury.
Wear goggles, protective
gloves and protective clothing.
Cleaning agent manufacturer's
details.
Note
"Fauch 600" and "Antox 75 E"
Manufacturer:
Hebro Chemie GmbH
Rostocker Straße 40
D -41199 Mönchengladbach
Further details regarding the individual steps
(cont.)
10
Commissioning, inspection, maintenance
56
92
405
GB