Wiring Question for New Lux Thermostat?
My landlord recently purchased me a Lux TX500 programmable thermostat (I told him I would install it if he purchased it). I disassembled the old/original Honeywell T87F unit and discovered six wires: G, Y, W, R, O (brown wire), and B (blue wire). Since
The B wire must be connected to the C (Common) wire.
Make sure you make a bridge between RH and RC in the thermostat.