Hello, I am replacing my old thermostat (two wires only Y and R) with a new Lux thermostat. I am wondering what I connect the wires to on the new Lux, G, Y, W, RH, B, O, RC? Also why are the RH terminal and the RC terminal connected with a single wire on the new unit? My heating system is for heat only. No air conditioning. Thanks for the help!
Matt Andersen