I'm replacing an old honeywell thermostat with a new digital. The old one has the standard two wires - R and Wh, but then it has two C wires. I think they just provide power for the clock, and I'm wondering if I can just close off that circuit. The clock has two metal brush connections that close the circuit.
Can I just close that connetion ? Or should I wire them to two other labeled options?
Thanks.