Tuesday, May 2, 2017

Help wiring fast-stat common maker

I have a two-wire setup. I purchased a fast-stat and have a question on installing it on the boiler/furnace side. Here is a general picture of what my boiler (3 zones) setup looks like: http://i.imgur.com/7PCQt2U.jpg Inside one of the relays: http://i.imgur.com/qVP9Q9F.jpg And I'm guessing the transformer: http://i.imgur.com/EAg57Tt.jpg Is my setup the same as on page 4? http://www.fast-stat.net/pdf/Common-Maker-Installation-Instructions-Set.pdf The two wires going to the T & T from Fast-Stat is easy enough to understand but I'm having trouble with the other two wires. The transformer doesn't have any labels for "R" and "C", so which one is which? Not sure where to connect.

submitted by /u/noodles1234
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