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

Steps
(continued)
S
Maintenance
ervice
B
A
Fig. 60
Initial Start-up, Inspection and Maintenance

18. Clean combustion chamber/heat exchanger surfaces

1. Remove burner cover panel as per
the removal and reinstallation
instructions on pages 56 and 61 in
this manual, and reinstall panel upon
completion of service work.
2. If necessary, clean the combustion
chamber and heat exchanger
surfaces with a brush and/or rinse
with water.
Use solvent-free cleaning agents to
remove residues:
H Remove combustion by-product
deposits with alkaline agents
containing tenside.
H Remove coatings and (yellowish
brown) surface discoloration with
phosphoric acid-based "Antox 75 E
Plus", or citric acid-based
CitriSurft 3050 by Stellar
Solutions Inc.
H Rinse thoroughly with water.
3. Connect electrical cables to
corresponding parts.
Please 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