Power Supply - Viessmann VITODENS 111-W Installation And Service Instructions Manual

Electrical connections

Power supply

Regulations and Directives
Danger
Incorrectly executed electrical
installations can result in injuries
from electrical current and in
appliance damage.
Connect the power supply and
implement all safety measures
(e.g. RCD circuit) in accordance
with the following regulations:
■ IEC 60364-4-41
■ IEEE Wiring Regulations
■ Connection requirements
specified by your local power
supply utility
Install an isolator in the power cable that
simultaneously isolates all non-earthed
conductors from the power supply with at
least 3 mm contact separation.
We also recommend installing an AC/
DC-sensitive RCD
(RCD class B
rents that can occur with energy efficient
equipment.
(cont.)
) for DC (fault) cur-
Installation sequence
Protect the power cable with an external
3 A fuse to BS 1362.
Danger
Incorrect core assignment can
result in serious injury and dam-
age to the appliance.
Take care not to interchange
wires "L1" and "N".
Danger
The absence of component
earthing can lead to serious injury
from electric current if an electri-
cal fault occurs.
The appliance and pipework
must be connected to the equi-
potential bonding of the building.
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