Simple honeywell t5 thermostat wiring diagram - Going into your furnace may sound intimidating, however if you have the basic information of wiring, and realize a way to do away with the proper furnace panels to get entry to the electronics, then you definately should be nice. The com 24v terminal will be connected to the c (24 vac commonplace) of the thermostat. In a state of affairs wherein the original thermostat wires may have been stapled to an interior wall stud, and not run via conduit, you will be better off leaving the existing set of wires, and reducing them off on the access and exit factors of the wall. Then feed new wires with a fish tape (klein tools). Take a look at your local home development stores, or local device apartment, for rental availability. If you have easy get admission to to the prevailing thermostat wires, just eliminate and follow the identical path with the new set of wires. You may use cable ties, electric tape, or staples (securing wires and cables article). Make certain to take a very conservative dimension on how long your new set of wires should be. You don’t want to begin over, in case you arise short. A: in case you plan to upgrade to a brand new thermostat make certain you have the proper quantity of wires available, otherwise your new thermostat received’t paintings (most superior honeywell thermostats require a commonplace (c) twine to power on). In case you do want additional wires, you'll want to take into account how tough putting in new wires may be in your software, and in case you need to price range for an electrician or hvac tech to install the right wiring.
Note: a preceding installer can also have used a unique set of coloration wires. This could be a non trouble to maintain tune of if an entire new set of thermostat wires is pulled. Otherwise tag the wires before eliminating from the prevailing thermostat, or take note of the terminals each twine is hooked up to. A few programmable thermostats (e.G. Honeywell status wiring necessities) want a minimum of five wires, and perhaps extra depending on what capabilities you need to perform (humidifier, etc). The additional 5th cord could be for not unusual; supplying stepped down energy from a transformer.