existing thermostat has a black and white wire connected to my
thermostat to furnace only as I do not have air conditioning .Furnace is
about 15 years old as is thermostat. Cannot see how I can configure the
new nest thermostat. Any suggestions ?
Thanks for your comments, I had to call my furnace technician to
connect, there were 2 other wires red and green wrapped around the outer
casing, that were not currently connected to the thermostat , but were
connected to the furnace. All is working ...
