Viessmann Vitocal 300-G Installation And Service Instructions Manual page 70

Installation sequence
Electrical connections
1. Route LV leads through the aperture
"< 42 V" to the heat pump control unit
connection area and apply strain
relief using the cable ties provided.
70
(cont.)
< 42 V
2. Route 230 V~ leads and power
cables for the compressor through
the aperture "230 V~" to the heat
pump control unit connection area
and apply strain relief using the cable
ties provided.
For power supply, see from
page 94.
Note
Route LV leads and 230 V~ cables as
far apart as possible.
230 V