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Upgrading 2 wire Tstat wiring question- Honeywell
Hello. I'm trying to upgrade my oldschool 2 wire thermostat to a Honeywell WiFi unit RTH6500. This C wire eludes me...
This is my heating system. It runs 2 zones but I'm just looking to just do the one. The other thermostat runs to the Taco relay switch that doesn't have cover removed.
The red and white wires coming from the old thermostat plug in to the Aquastat at T and T/3
Where might I add the C wire? I'm new to the home heating game but have a solid background in automotive diagnostics and electronics repair. Trying to research how everything works, I would much rather take apart a motor. Thanks in advance!