Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual page 27

Electrical connections
Power supply fÖ
Danger
Incorrect core allocation can
result in serious injury and dam-
age to the appliance.
Take care not to interchange
wires "L1" and "N".
(cont.)
■ Remove existing wires from plug fÖ.
■ Install an isolator in the power cable
which simultaneously separates all
non-earthed conductors from the
mains with contact separation of at
least 3 mm.
In addition, we recommend the instal-
lation of an AC/DC-sensitive RCD
(RCD class B
currents that can be created by energy
efficient equipment.
■ Max. fuse rating 16 A.
Installing the boiler
) for DC (fault)
27