I’m building my own home in SC and I have radiant hydronic heat. I’m out of market so trying to get this done has been a challenge. I think a simple question, but how do I wire a 2-wire T’stat for the radiant floors. Unfortunately the T-stats don’t have a “red and white” connection. They have a NC-NO-C. I don’t know which wire goes where.
I have already blown one transformer on the Taco ZVC unit. I’ve traced every wire from the manifold actuators and the T-stats and no wire was crossed or mixed up.
Here is a link to the manual for the Tstats: https://www.infloor.com/wp-content/uploads/2013/10/29019-installation-guide.pdf
Here is a link to the Taco: https://inspectapedia.com/heat/Taco-ZVC403-Wiring-Manual-2013.pdf
It’s obvious what goes where on the Taco….
Thanks for the help