I am attempting to install a programmable thermostat (Honeywell RTH7500d) to replace my old non-programmable Lennox 51M33), but have a question as to which wires go where on the new one.
The old unit uses wires O, R, G, Y1, W1, C, E, T2, and T1, with a jumper between W1 and E, as well.
The quick start guide of the new unit mentions O, G, Y, Y2, W, W2, R, Rc, and AUX, so am a little confused by some of the 'extra' wires that may or may not be needed.
Thanks in advance for any guidance!
Ryan
The old unit uses wires O, R, G, Y1, W1, C, E, T2, and T1, with a jumper between W1 and E, as well.
The quick start guide of the new unit mentions O, G, Y, Y2, W, W2, R, Rc, and AUX, so am a little confused by some of the 'extra' wires that may or may not be needed.
Thanks in advance for any guidance!
Ryan