I M 18. Check Neutralization Unit (If Applicable); Clean Combustion Chamber/Heat Exchanger Surfaces - Viessmann Vitodens 100-W WB1B Series Installation And Service Instructions Manual

Start-up, Inspection and Maintenance
Steps
(continued)
Maintenance
Maintenance
70
18. Check neutralization unit (if applicable)
1. Check the pH value of the condensate with a pH
measuring strip. If the pH value is less than 6.5,
replace granulate.
2. If contaminated: Rinse neutralization unit with tap water.
3. Add granulate as marked on the cartridge.
IMPORTANT
pH measuring strip is field supplied.
IMPORTANT
The granulate is consumed as it neutralizes the condensate.
The red marking indicates the min. filling level.

19. Clean combustion chamber/heat exchanger surfaces

1. Remove burner cover panel as per the removal
instructions on page 67 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 deposits with
- Remove coatings and (yellowish brown) surface
- Rinse thoroughly with water.
Note: Be careful not to scratch parts which are in
3. Connect electrical cables to corresponding parts.
Follow cleaning agent manufacturer's safety
instructions and wear appropriate protective equipment.
IMPORTANT
Perform leak test.
Vitodens 100-W, WB1B Installation & Service
Installation Instructions Neutralization Unit
alkaline agents containing tenside.
discoloration with phosphoric acid-based
"Antox 75 E Plus", or citric acid-based CitriSurft
3050 by Stellar Solutions Inc.
contact with flue gas. Use plastic brushes, not
wire brushes! The cleaning agents must not
contain hydrocarbon-based solvents or potassium.
WARNING
Accessory