Viessmann VITOCAL 300-G Installation And Service Instructions Manual page 80

Installation sequence
Electrical connections
1. Route LV cables through opening "<
42 V" to the heat pump control unit
connection area.
2. Route 230 V cables through opening
"230 V" to the heat pump control unit
terminal area.
Note
Route LV cables and 230 V cables as
far apart as possible.
3. Route power cable for compressor
through opening "400 V" to terminal
area. For power supply, see from
page 103.
80
(cont.)
4.
<42 V
230 V
400 V
Danger
Incorrectly routed wiring can
lead to serious injury from
electrical current and result in
equipment damage.
Route 230 V cables and LV
leads separately, bundle
tightly near the terminals and
secure using the cable ties
provided. This ensures that, in
case of failure, for example
when detaching a wire, the
wires cannot drift into the
adjacent voltage area.