Honeywell furnace wiring diagram - Be aware: the solution here is the querent's -- i'm actually writing it up in a cw answer to get this off our plate because the querent has now not lower back emigrate it from his question-edits to an answer himself. A: in case you plan to improve to a new thermostat make certain you've got the right quantity of wires available, in any other case your new thermostat won’t paintings (maximum superior honeywell thermostats require a commonplace (c) twine to strength on). In case you do want extra wires, you'll want to bear in mind how hard installing new wires may be on your utility, and if you need to budget for an electrician or hvac tech to put in the right wiring. Solved (01/04/15): i decided that the t terminal changed into exactly what i needed so gave it a try to the whole thing is working perfectly. I also pulled in some 18-five thermostat wire. Right here is my setup, in case it might help someone else:.
Be aware: a preceding installer may also have used a exclusive set of colour wires. This can be a non issue to hold music of if a whole new set of thermostat wires is pulled. In any other case tag the wires earlier than putting off from the present thermostat, or be aware of the terminals each cord is connected to.