So I am replacing an Aprilaire 8600 thermostat with a Honeywell RTH9580WF. I have extra wires, and neither the manual nor the Honeywell site (or even Google) have any answers.The old wiring to the old thermostat mounting platethe new wiring to the Honeywell plate showing extra wiresthe sticker for the heat pump model numberand the page explaining what to do with the O and B wires if I already have a wire attached to C.Note: I didn't connect the Y2 wire to the Y2 terminal once I realized I had 2 extra wires.What do I do? via /r/DIY http://ift.tt/2iB1Rh9
