Detail thermostat wiring diagram honeywell - A: in case you plan to upgrade to a brand new thermostat ensure you've got the right number of wires available, otherwise your new thermostat won’t work (most superior honeywell thermostats require a commonplace (c) cord to strength on). If you do need extra wires, you may need to bear in mind how tough installing new wires might be in your software, and in case you need to finances for an electrician or hvac tech to put in the right wiring. When you have easy get entry to to the prevailing thermostat wires, simply eliminate and follow the equal path with the brand new set of wires. You can use cable ties, electrical tape, or staples (securing wires and cables article). Make certain to take a very conservative size on how long your new set of wires need to be. You don’t need to start over, in case you arise brief.
In a situation wherein the unique thermostat wires may additionally have been stapled to an interior wall stud, and no longer run through conduit, you'll be better off leaving the existing set of wires, and reducing them off on the entry and go out points of the wall. Then feed new wires with a fish tape (klein tools). Check your neighborhood home development shops, or local device condominium, for condo availability. A few programmable thermostats (e.G. Honeywell prestige wiring necessities) want a minimum of five wires, and maybe greater relying on what features you need to function (humidifier, and so forth). The additional fifth wire might be for not unusual; presenting stepped down energy from a transformer.
Going into your furnace might also sound intimidating, but if you have the basic know-how of wiring, and recognize a way to put off the proper furnace panels to get right of entry to the electronics, then you definately ought to be pleasant. The com 24v terminal might be related to the c (24 vac commonplace) of the thermostat. Notice: a previous installer may additionally have used a special set of color wires. This will be a non difficulty to maintain music of if a whole new set of thermostat wires is pulled. In any other case tag the wires earlier than disposing of from the existing thermostat, or take note of the terminals each cord is connected to.