Electrical Connections In The Control Unit - Viessmann VITOCAL 300-A Installation And Service Instructions Manual

Installation sequence

Electrical connections in the control unit

Note
& The total output of all components
connected directly to the control unit
(e.g. pumps, valves, message facil-
ities, contactors) must not exceed
1000 W.
If the total output ≤ 1000 W, the indi-
vidual rating of a component (e.g.
pump, valve, message facility, con-
tactor) can be greater than speci-
fied.
& Route 230 V cables and LV cables
separately and bundle tightly near
the terminals. This ensures that, in
case of failure, for example when
detaching a wire, the wires cannot
drift into the adjacent voltage area.
& Strip the insulation as close to the
terminals as possible.
& If two components are connected to
the same terminal, press both cores
together into a single wire ferrule.
70
Make all external electrical connec-
tions as per the instructions from
page 82 onwards.