Computherm Q72RF to Danfoss WB12

[andyste]

I need to replace a basic room thermostat with a Computherm Q72RF. The central heating system is wired up via a Danfoss WB12 (3 port mid position valve).
I've attached both the relevant page from the Q72RF manual and the WB12 wiring diagram, and would be grateful if someone could tell which terminals on the Q72RF receiver need to go where in the WB12 please?
I'm assuming N & L on the stat go to 2 & 1 on the WB12, but not sure about NO & COM. 4 & 1 perhaps?

 

[ericmark]

Oh dear, that backplate is a standard used by many manufactures, but it is not following the standard wiring diagram so if replaced with any other make it will not work, a three port valve needs a N/C contact for the DHW, and although there is really nothing to stop powering the thermostat from an independent supply, in the main we aim to supply all central heating devices from one supply, many reasons, in my case as boiler is on an uninterruptible supply. A bit pointless if the thermostat stops working.

But it uses 1 and 2 instead of standard 1 and 3.