And also the EWCM900 of Eliwell (Invensys, which will be sold any time, probably to Danfoss I heard) at least even powerfull (i think even more) as the AKC and cheaper.
On the net you can find the comlpet manual http://www.climate-eu.invensys.com/U...EWCM_900_S.pdf
Perhaps I'm missing something.
Peter