Viessmann VITOLIGNO 300-P Installation Instructions Manual page 18

Making the electrical connections
Pumps 400 V~
L1 L2 L3 N PE
N L
M
3~
A Contactor
B Pump
Solar circuit pump in conjunction with a solar thermal system
M
1~
B A
sF To the control unit
A High limit safety cut-out
B Solar circuit pump
18
(cont.)
For controlling the contactor
Rated current
Recommended
connecting cable H05VV-F3G
24
The power consumption of the pump
must not exceed 2 A.
4(2) A~
2
0.75 mm
or
H05RN-F3G
0.75 mm 2