Viessmann VITOCELL 100-V - Filling the DHW Cylinder; Shutting Down the System; Checking Safety Valve Function; Checking Anode Earth Current

20
1. Fill the DHW cylinder on the DHW side.
Note
If the DHW cylinder is pressurised, retighten the
flange cover with a torque of 25 Nm.
2. Check the fittings for leaks on the heating water
and DHW sides, and at the immersion heater or
heating lance (if installed), and retighten if
required.
3. Check the function of the safety valves according
to the manufacturer's instructions.
Shutting down the system
Checking the safety valve function
Checking the anode earth current with an anode tester
Checking the anode earth current
EDC
300 l
A
B
Fig. 16
1.
Remove top cover
A
(300 l version with screw)
and thermal insulation (fleece or EPS flange insu-
lation)
B
. Remove the thermometer sensor (if fit-
ted).
2.
Disconnect earth cable
C
from tab
D
.
3.
Connect tester in series across tab
D
and earth
cable
C
:
■
Current > 0.3 mA:
Protective magnesium anode is in working order.
■
Current < 0.3 mA:
Visual inspection of the protective magnesium
anode
(see page 21).
Commissioning, inspection, maintenance
Filling the DHW cylinder
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