I am running 110v not 220.
I am assuming you are using a part with "-240" in the part number.
It looks to me that L1, L2 is where you connect power to power the brains. 220 in your case. So Line red and Line white.
L= low probe, H = high probes, C = tank ground or very low probe.
There is a pump up and a pump down version.
NO = normal open, NC = normal closed, COM = common. So the relay is a switch that connects COM and NC, and when energized it connects COM and NO. There will never be a connection from NC to NO.
They show the power connected to NO and NC. The pump on COM and NO.
I would connect Line 1 and Line 2 to L1 and L2.
Then connect L1 to NO and L2 to NC. (or the reverse of that) Assuming the 220V is the same for the pump and the brains.
Now connect the pump (load) to COM and NO.
Is that what you see?
------------------edited------
COM for the probes and COM for the relay are not the same thing!!!! Do not connect them together.