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

Electrical connections
■ Not immediately below balconies
or gutters
■ Never render over
■ Connection:
2-core lead, length max. 35 m with
a cross-section of 1.5 mm
2. Plug the power cable supplied with
the outside temperature sensor into
slot "X21".

Power supply

Regulations and Directives
Danger
Incorrectly executed electrical
installations may result in injuries
through electric shock and to
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
■ VDE regulations
■ Connection requirements
specified by your local power
supply utility
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.
(cont.)
3. Connect the outside temperature
sensor to terminals 3 and 4 (see
page 16).
2
We additionally recommend installing an
AC/DC-sensitive RCD (RCD class B
occur with energy efficient equipment.
Protect the power cable with max. 16 A.
Danger
Incorrect core allocation 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 in the system can lead to
serious injury from electrical cur-
rent if an electrical fault occurs.
Connect the appliance and pipe-
work to the equipotential bonding
of the building in question.
Installation sequence
) for DC (fault) currents that can
17