Cleaning The Inside Of The Dhw Cylinder - Viessmann VITOCELL 100-U Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
1. Remove lid A and flange insula-
tion B.
2. Remove upper thermometer
sensor C.
3. Pull earth cable E off tab D.

Cleaning the inside of the DHW cylinder

1. Drain the DHW cylinder from the
DHW side.
8
(cont.)
4. Connect the tester in series
between earth cable E and con-
nection tap D.
& The anode is OK if the indicated
current is > 0.3 mA.
& Visually inspect the anode, if the
current measures < 0.3 mA or if
there is no current at all (see
page 9).
2. Remove flange lid A.
Note
The system can only be cleaned
via the upper flange aperture.
3. Disconnect the DHW cylinder from
the pipe system to prevent cleaning
agent and contamination from
entering the pipework.
4. Remove loose deposits with a high
pressure cleaner.
!
Please note
Pointed objects or those
with sharp edges will
damage the internal cylinder
wall.
Only use plastic tools to
clean the inside.