I've been diagramming my boiler wiring so that I can understand it before installing a Tekmar 256 external reset. What's been throwing me for a loop is that it looks as if the 24v common is being fed to the thermostat instead of the load. This is reversed right? Should I reverse the blue and green wires going into the transformer?
Note that there are 2 other zones not shown here, but they tie in similarly (thermostat gets the green and the taco 2 is attached to the blue).
Edit -- It turns out that the transformer was mislabeled. What's labeled as R/LOAD on the transformer is actually the common.