Viessmann Vitocal 300-G Installation And Service Instructions For Contractors page 65

Electrical connections in the heat pump control...
Route electrical cables from heat pump stage 2 (type BWS) to the
heat pump control unit
aVG
aJ B
A Heat pump stage 2 (type BWS) ter-
minal area for cables connecting to
the heat pump stage 1 (type BW)
B < 42 V low voltage connecting leads
with plugs aJ and aVG
A B C
< 42 V
230 V
1.
Installation sequence
< 42 V
C 230 V~ connecting cables
D Primary pump power cable, if instal-
led
(cont.)
2.
BC
230 V
65