Filling The Dhw Cylinder; Shutting Down The System; Checking The Safety Valve Function - Viessmann VITOCELL 100-U Service Instructions Manual

Filling the DHW cylinder

1. Fill the DHW cylinder on the DHW side.
Note
When the DHW cylinder is pressurised, retighten
the flange cover with a torque of 25 Nm.

Shutting down the system

Checking the safety valve function

Testing the anode earth current with an anode tester
C D E
Fig. 3
1. Remove cover and flange insulation
A
2. Remove upper thermometer sensor
3. Remove earth cable
E
.
B
.
C
from connecting tab .
D
Commissioning, inspection, maintenance
2. Check the fittings on the heating water and DHW
sides for leaks and retighten if required.
3. Check the function of the safety valves according
to the manufacturer's instructions.
A
B
4. Connect tester in series across earth cable
tab .
D
Current 0.3 mA: Protective magnesium anode
■
>
is OK
■ Current < 0.3 mA or no current at all: Inspect the
protective magnesium anode visually (see
page 10).
and
E
9