Thermostat wiring advice, please

[N007]

Hi! Have a EBP wireless room thermostat to add to fully pumped open vent CH system via Dayton motorised valve. Confusion is, at the receiver "Thermostat wiring has no polarity requirement", and the illustrated wiring diagram has two terminals - one marked, " TH" and the other "GND". Further confusion is that the terminals in the device receiver are marked "TH" and "Com" respectively.
I know this is not a £180 Honeywell or similar, but any qualified advice would be welcome.
Thanks.

 

[petit_pablo]

Picture of the wiring diagram? Whats currently fitted

 

[N007]

Hi Pablo,
Apologies, been away two days.
Wiring diagrams attached. Hope you can point me in the right direction.

 

[bernardgreen]

This should work, though the label "ground" on the terminal may mean the contact in the new thermostat is not a voltage free floating contact