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Steam Boiler to tstat wiring
I have a weil mclain steam boiler. PEG-30A-S-PI, nat gas, single pipe/zone. Trying to wire up a wifi tstat with a C wire.
Old tstat had w from transformer wired to w and y from transformer wired to R/Rc per this schematic. https://goo.gl/photos/VLr1UA58Escsjgcy7
Just ran 18/5 wire and trying to figure out how to wire up new t stat to the transformer properly with a C wire. Should I also connect up R from the transformer? Any help is much appreciated!