I am adding underfloor heating to my conservatory and i have a few questions about how to wire up the pump, moterized valve and room stat.

My current setup is the Sundial "Y" Plan, and i need to know where to connect so that when the thermostat calls for heat the moterized valve opens and the pump and boiler come on, there is also a second pump in the house but i would need that to stay off, only to come on when the other room stat calls for heat.