Replacing room stat with wireless room stat help please

[jasonmayes2]

Hi everyone iam looking at replacing danfoss RMT230 (i think) with a siemens RDH10RF.
I have run the power supply for the new unit but iam a bit confused on how the unit itself is wired into the boiler wiring.
On the old unit the diagram says that terminal 1 is L and terminal 3 is N its only a 2 wire unit.
The siemens has 3 terminal L1, LX and L2.
I think that the L from the old unit should go to either L1 or L2 on the new unit and the N from the old unit should go to the LX terminal.
Could anyone please confirm the correct way to wire It up.
Thanks for looking
Jason

 

[denso13]

L to Lx and N to L1

 

[jasonmayes2]

Thanks very much.
Gonna go try it out just now.
Thanks again.