In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Proper Wiring Help Needed
I purchased a Honeywell RTH8580WF Wi-Fi Thermostat and now I am not sure if I can use it on my system. The current thermostat has only two (2) wires on it connected to the RH + W terminals. I spoke with Honeywell and they tell me I need a third wire (24V) to power the display. I checked the boiler and the thermostat is connected to a TACO SR503 Zone Control. I only see two terminals where the current thermostat is connected and I am trying to figure out where the third would connect?
Can anyone help me out here please or would I be better off just returning the new thermostat?
Thanks in advance!