Checking And Replacing The Protective Magnesium Anode (If Required) - Viessmann VITOCELL 100-U Service Instructions Manual

Commissioning, inspection, maintenance
Cleaning the inside of the DHW cylinder
A
1x
Fig. 4
1. Drain the DHW cylinder on the DHW side.
2. Remove flange cover
Note
The system can only be cleaned via the upper
flange aperture.
3. To prevent cleaning agents and contaminants
entering the pipework, separate the DHW cylinder
from the pipework.

Checking and replacing the protective magnesium anode (if required)

Check the protective magnesium anode.
We recommend replacing the protective magnesium
anode if it has been reduced down to
10
7x
.
A
10-15 mm.
7
4. Remove loose deposits with a pressure cleaner.
!
Please note
Pointed or sharp cleaning tools will damage
the cylinder interior.
Only use plastic tools to clean the inside.
5. Use a chemical cleaning agent to remove hard
deposits that cannot be removed with a pressure
cleaner.
!
Please note
Cleaning agents containing hydrochloric acid
will attack the DHW cylinder material.
Never use such cleaning agents.
Danger
Cleaning agent residues can cause poison-
ing.
Always observe the information provided by
the cleaning agent manufacturer.
6. Fully drain all cleaning agent.
7. Flush the DHW cylinder thoroughly after cleaning.
Danger
Contact with hot components causes damage to
cables.
After installation, cables must not come into con-
tact with hot components.
Note
For situations with limited space, a chain anode (on
request) or an impressed current anode (see pricelist)
are available.