From a previous post last September, Patrick_Caezza answered :
White - W1 to W2 (set as AUX heat)
Red - R to Rc (jumper to RC not needed)
Orange - O to OB
Yellow - Y to Y1
Green - G to G
Blue - B to C
I read that my wires S1 and S2 are for inside and outside temperature. What should I do with those 2 wires in the new Nest Thermostat ?
Also, for the R red wire I’m not sure what means “jumper to RC not needed” . Should I connect or not to arc ?