I have a nhb 150 with radiant heat and dhw
Radiant heat has taco rely with taco zone pumps
My problem is that when dhw is calling for heat then boiler swiching to dhw temperature 175 but my taco rely not turning off zome pump so that temperature runs tru my radiant heat wich is bad because i running my radiant heat at 100 only and i dont want to go more then that because of my wood floors
Any idea how to fix that ?
I got no mixing valve and i dont want to do that