Replacing mechanical timeswitch with Siemens REV24RF

[danuk04]

I'm replacing a traditional mechanical heating/hot water timeswitch with a Siemens REV24RF. The old timeswitch has traitional wiring NL1234 with NL and 34 wired. The Siemens has N L Lx L1 L2. How does the wiring map across ?

I've got a suspicion I may have got the wrong model because there doesn't seem to be independent hot water controls.

Thanks for your help

 

[seco services]

whats the old one ?

this is a programmable room stat not a hw/ch programmer.