In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
If you have read any of my posts you can see I'm doing a lot to my system. Now I'm still ordering parts and supplies until i have everything to do the job all at once. So the question for today is I'm going to use a Tekmar 420 with the 335 to run my boiler and zone valves, do I need a aqua stat for my SS30 or just a sensor wired into the 420 controller