Checking The Cylinder Burner Assembly - Viessmann Vitocrossal 200 CM2 400 Service Instructions Manual

Vitocrossal 200, CM2 400, 500, 620 and 620 TX Service
Steps – Commissioning, Inspection and Maintenance
Commissioning, Inspection, Maintenance
(continued)

Checking the cylinder burner assembly

WARNING
Escaping gas leads to a risk of explosion.
Close the gas shut-off valve.
1. Undo fitting on the gas supply pipe A.
2. Undo the six bolts on the boiler door and open the door.
3. Check the wire mesh of the cylinder burner assembly
B for damage.
4. Replace cylinder burner assembly B if required.
See Installation Instructions for burner.
CAUTION
The boiler door can cause damage and personal injury
if it swings shut. After opening the boiler door take
measures to prevent it from swinging shut.
CAUTION
Touching hot components can cause burns. Allow the
burner to cool down before beginning work.
Note: Scratches inside the combustion chamber can lead
to corrosion. Never put tools or other objects into
the combustion chamber.
CAUTION
Contamination on the burner gauze assembly can result
in the system not working properly. When replacing the
burner gauze assembly it is important that fibres from
the thermal insulation block do not become stuck to the
burner gauze assembly. Therefore fit a protective
covering when installing the burner gauze assembly.
CAUTION
The combustion chamber may become contaminated if
the burner gauze assembly is not replaced correctly.
Make sure that the combustion chamber is kept free of
thermal insulation block fibres at all times.
23