I have an AA 130 and I am hooking it up to a forced air furnace with a heat exchanger but am also planning on setting up zones for future radiant floor heat and some baseboard hydronic heat. I have been reading Holohan's 1998 book, Hydronic Radiant Heating and I am learning. I have never installed a system like this before.
Here are a couple of questions:
1) Are flow control valves necessary after each circulator? I was under the impression that newer circulators would suffice to prevent gravity circulation in the zone when the circulator is shut off. Is this the case?
2) Is primary/secondary looping always the way to go?
I have some other questions about some of the controls, but I thought that I should post them in the "controls" section. I will probably have a lot more questions about everything actually! Bear with me...I'm new at this!
Thanks for the input!