I have an Apollo fanfare 30/50b which was running a simple Hot or Not system. I have installed a new 3 port valve and programmer but am having trouble re-wiring it all. I do not have a room stat just TRV's. The boiler has an "ON" terminal which I know has to have a Live feed to it for the boiler to operate. Obviously this has to be linked to the 3way valve / programmer so it gets it's live feed when heating is selected and also when hot water only is selected. I am going nuts trying to figure it out. Can someone help by mailing me a drawing or explaining what wire goes where? Thank You