Changing an old thermostat to a new digital programmable one.?
Wednesday, March 31st, 2010 at
7:49 pm
I currently own either a 1F56W-444 or 1F56-444 thermostat from White Rodgers and I want to get a digital programmable thermostat. Which replacement should I look at getting for a 24v system?
More information about it is here:
http://www.emersonclimate.com/en-US/products/thermostats/dont_know_your_model_number/1e56-1f56/Pages/1e56-1f56.aspx
I just found out that it is a 1F56-444.
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Oh, it really doesn’t matter like that nice lady above me said. Get the right t-stat for your system. They come in a couple different flavors depending on what you are controlling but they are all 24 VAC. There’s "heat only," there’s "heat/cool," and then there’s any number of heat pump "cool/heat/backup/emergency/automatic switchover" thermostats (these can get complex). Buy the right one for your system. As far as how to hook up the wires and what they do, here’s a good primer:
http://toad.net/~jsmeenen/wiring.html
It ain’t definitive, but it’s a good starting point.
ANY digital thermostat that works on 24 volts could be installed on your system — it doesn’t matter at all what model you had before. As far as I know, all the t’stats at the building supply centers are 24 volt. It’s the US standard.
That link only shows you instructions and maintenance of your existing thermostat — you don’t need that for anything if you are replacing it.
You are making this more complicated than it needs to be. Just buy a new 24 volt thermostat, take off the old one, reconnect the two wires to the new one, install the batteries and program it per the instructions that came with it. Simple.