Separating The Neutralising System From The Heat Exchanger Module And Connecting The Drain Hose; Cleaning The Combustion Chamber And Heating Surfaces; Checking Gaskets And Thermal Insulation Components - Viessmann Vitocrossal 300 Service Instructions For Contractors

Commissioning, inspection, maintenance
Separating the neutralising system from the heat exchanger module and
connecting the drain hose
C
B
A
D
Fig. 2

Cleaning the combustion chamber and heating surfaces

!
Please note
Contact with unalloyed iron and scratches on
parts in contact with flue gases can lead to cor-
rosion.
Only use plastic brushes, not wire brushes or
sharp objects.
1. Clean the combustion chamber and heating surfa-
ces.
For normal cleaning, flush the heating surfaces
■
thoroughly with a jet of water.
■ You may use cleaning agents if you notice stub-
born residues, surface discolouration or soot
deposits.
For this, observe the following:
Only use solvent-free cleaning agents. Ensure
–
that no cleaning agent gets between the boiler
shell and the thermal insulation.
– Remove soot deposits with alkaline cleaning
agents with surfactant additive (e.g. Fauch
600).
– Remove coatings and surface discolouration
(yellow-brown) with slightly acidic, chloride-free
cleaning agents based on phosphoric acid (e.g.
Antox 75 E).

Checking gaskets and thermal insulation components

1. Check gaskets and packing cord in the boiler door
for damage.
2. Check thermal insulation components on the boiler
door for damage.
10
1. Separate hose or pipework
system from siphon
B
2. Undo siphon from condensate drain
B
3. Clean condensate drain
plastic brush.
4. Connect drain hose
D
route it to a drainage system.
2. Remove loosened deposits from the boiler. Thor-
oughly flush heating surfaces and the flue gas col-
lector with a jet of water.
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
3. Replace any damaged parts.
A to the neutralising
.
.
C
C on the inside using a
to condensate drain and
C