Shutting Down The System; Opening The Boiler Door; Cleaning The Combustion Chamber And Heating Surfaces; Checking The Gaskets And Thermal Insulation Sections - Viessmann Vitocrossal 200 Service Instructions For Contractors

Commissioning, inspection, maintenance

Shutting down the system

1. Switch OFF the mains isolator or the power supply,
and safeguard against unauthorised reconnection.
Danger
Mains voltage can be life threatening.
For maintenance work, isolate the system
from the power supply.

Opening the boiler door

1. Remove the gas supply pipe.
2. Undo 4 screws on the boiler door and open it.
Note
Prevent the boiler door from slamming shut.

Cleaning the combustion chamber and heating surfaces

Thoroughly clean the combustion chamber and heat-
ing surfaces with a water jet.
!
Please note
Scratches on parts that come into contact with
flue gas can corrode.
Only use plastic brushes, no wire brushes or
sharp objects.
For cleaning, flush the heating surfaces thoroughly
with a jet of water. For stubborn residues, surface
stains or soot deposits, cleaning agents can be used.
For this, observe the following:
Only use solvent-free cleaning agents. Ensure that
■
no cleaning agent gets between the boiler body and
the thermal insulation.
■ Remove soot deposits with an alkaline cleaning
agent with surfactant additive (e.g. Fauch 600).

Checking the gaskets and thermal insulation sections

1. Check the gaskets and packing cords in the boiler
door for damage.
2. Check the thermal insulation components on the
boiler door for damage.
20
2. Remove the burner hood.
3. Disconnect burner cables with plugs
from the burner control unit. Route the burner
cable out of the burner casing.
4. Close the gas shut-off valve.
!
Please note
Scratches inside the combustion chamber can
lead to corrosion.
Never place tools or other objects inside the
combustion chamber.
Remove coatings and surface discolouration (yellow-
■
brown) with slightly acidic, chloride-free cleaning
agents based on phosphoric acid (e.g. Antox 75 E).
■ Remove loose deposits from the boiler; thoroughly
flush the heating surfaces and the flue gas collector
with a water jet.
Cleaning agent manufacturer's instructions
Note
"Fauch 600" and "Antox 75 E"
Manufacturer:
Hebro Chemie GmbH
Rostocker Strasse 40
D-41199 Mönchengladbach
3. Replace any damaged components.
and
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