Clean Combustion Chamber/Heat Exchanger Surfaces - Viessmann VITODENS 100-W WB1B Series Installation And Service Instructions Manual

Steps
(continued)
Maintenance
Fig. 62
Initial Start-up, Inspection and Maintenance

18. Clean combustion chamber/heat exchanger surfaces

1. Remove burner cover panel as per
the removal instructions on page
55 in this manual, and reinstall
panel upon completion of service
work.
2. If necessary, clean the combustion
chamber A and heat exchanger
surfaces B with a brush and/or
rinse with water.
Use solvent-free cleaning agents
to remove residues:
Remove combustion by-product
g
deposits with alkaline agents
containing tenside.
Remove coatings and (yellowish
g
brown) surface discoloration
with phosphoric acid-based
"Antox 75 E Plus", or citric
acid-based CitriSurft 3050 by
Stellar Solutions Inc.
Rinse thoroughly with water.
g
3. Connect electrical cables to
corresponding parts.
Note:
Be careful not to scratch parts
which are in contact with flue gas.
Use plastic brushes, not wire
brushes!
The cleaning agents must not
contain hydrocarbon-based
solvents or potassium.
WARNING
Follow cleaning agent
manufacturer's safety instructions
and wear appropriate protective
equipment.
IMPORTANT
Perform leak test.
59