Monophase to triphase

i have switched my energy furniture and i’m trying to adapt my iotawatt; i use the guide provided and everything it’s ok, but i have one question: in the guide is mention that the Phase A is the main so B is 120 e C 240. i have attached my VT to the phase C (due to my old setup) so i configure that my phase C is 0 B is 120 and A is 240.
data displayed in this way seems correct, is it correct?

The phase of the VT is always phase A in the IoTaWatt. Please see the documentation.