Viessmann VITOCAL 242-S Installation And Service Instructions Manual page 74

Commissioning, inspection, maintenance
Further details regarding the individual steps
1.
!
Please note
A short circuit between the mag-
nesium anode and internal indi-
rect coil increases the protective
effect of the magnesium anode
and leads to corrosion damage
on the DHW cylinder.
Before inserting the electrical
cables, measure the resistance
between terminals A and B. If
the resistance is significantly less
than infinity, check whether the
magnesium anode is touching
the internal indirect coil.
74
8x
A B
(cont.)
2.