JJLJr
New Member
I recently purchased a house and want to replace the Honeywell T87A 1000 thermostat with a programmable one. I purchased a Honeywell RTH6300B "5-2 Day" thermostat. When I removed the old t'stat, I noticed that there were only two wires, a black and a white. I traced the wiring back to the boiler and found a splice with the black connected to a red and white to white.
Can I merely connect the existing black (red) wire to R and the white to W?
Thanks for the help.
Can I merely connect the existing black (red) wire to R and the white to W?
Thanks for the help.