Grundfos IO 50 SQFlex Installation And Operating Instructions Manual page 5

Appendix
Fig. 1 Wiring diagram, one DC conductor earthed
Fig. 2 Wiring diagram, floating DC supply or AC connection
5
IO 50
PE
Solar Module
IO 50
PE
~ ~
- +
Solar Module
PE
SQ Flex
~ ~ PE
+ -
SQ Flex
1