Im replacing my thermostat and the one im replacing the old one with has different colored wires and a little different and newer all together. Just wanted to make sure a had it hooked up correctly before plugging it in and i dont have any instructions to use. i think its a honeywell but not sure. All i have is this info. the product i selected below is not my thermostat but couldnt locate it in your list.
CLASS 2 153-4242
PART NUMBER 1147165
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Re: replacing a thermostat
Typically if you are replacing a heat only thermostat you will have two or three wires. On the old thermostat these wires will be attached to terminals marked "R", "W" and maybe "G". Document what color wires goes to which terminal and transpose these to the new thermostat. If you have a heat and cool thermostat, you will have two or three more wires and connected to terminals labeled "C", "B" and "Y". Again, transpose these wires to the new thermostat as best you can.
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You will need to go to the heating system and see what color wires are hooked to that. Typically the black and white wires will be used unless they used another color due to a bad wire. Hook the colored wires to the R or RH terminal on the thermostat and the other wire to the W terminal. You can also try taking the wires you have and one by one twisting them together and have a second person inform you when the heating system turns on. Take those two wires and hook them to the terminals I mentioned above.
How many wires do you have and what color are they? Red is power to the thermostat, White generally goes to W1, yellow to cooling Y terminal, Green to G terminal. If you have different colors the set-up may be a little different. You can check at the unit which should have a terminal board which would also indicate which wires go to which terminals.
You will have to trace the wires from the source, unfortunately, the colors may not be accurate. Do you have a 24v heat and cool system? I am going assume the answer of yes, as this is the most common. If you have something different, we will need to go over this again. According to the new thermostat, the red is the power, it will come from the low output side (24volt) of the transformer. Green is blower fan, it will go to a relay that turns the fan on when the thermostat is set from auto to on. The white is heat, this will go to the pilot/ gas valve etc. Last is yellow or blue, either color is for the cool. This goes to the control for the compressor, usually the contactor.