I was reading online that i could use a additional transformer since all 5 wires are in use. If you have a 2-wire, heat-only system, you could also install a 24VAC power transformer to supply constant power to your Sensi thermostat. This Honeywell NEMA Standard Transformer is a multi-mounting.
24-Volt control circuit step-down transformer designed to power any 24-Volt control system, including thermostats, gas valves and relays. This may have some of you running for the hills!
Please note the wires from the wall plug-in transformer will be visible unless installed behind the wall.If you purchase a transformer that is used to charge or power electronic devices, you will need to cut off the accessory plug (located at the end of the cord, opposite of the outlet plug) and split the two wires apart. I have seen guides that you can get a transformer and connect to C and Rh or Rc. However, just because you don’t have the blue wire mentioned above, that doesn’t mean you can’t use various models.My research has taken me on quite a journey in this respect, and so far I have come across three options that will help you overcome the common wire issue so many people suffer.So you’ve decided to install your new thermostat and discover that you have an unused wire but you do need a C wire connection. dom89 October 22, 2016, 5:54pm #1. Given that you thermostat needs one. First, you connect wires to the thermostat. This may have some of you running for the hills! C-Wire is an power cable that provides current to smart thermostat devices. These are just a few of many wiring types that we carry. I have a 2 stage cool, 1 stage heat system.
Before you take a look at the next video which explains how you can easily substitute the G wire for the C wire, please be aware this works best if you have a gas, propane or forced air conventional heating and cooling system.Using this method will also remove the ability to control you fan, however it will still run when your system does.Yet another way to solve the whole C wire issue is to install an external transformer. My recommendations for adding a c-wire: Best option: Add-a-wire kit Easiest option: 24V transformer. Thermostat Wire: Used in heating and A/C systems. For a more in-depth look, check out or Electrical Wire and Cable Buying Guide. Devices & Integrations. In this really short video you will learn how to connect an unused wire so it can be used as your C wire, which in a lot of cases has solved the problem of a thermostat not working.As you will notice from the information above, your ‘G’ wire connects to the fan (as industry standard) and is green in color.
C wire from transformer when I have both Rh and Rc. 1 year limited warranty. The third solution was to run the transformer wires to C and R, then connect one side of a relay to C and the other side to W. Any comments or questions? Adding a Transformer. If you have C-Wire install it simplifies the smart thermostat installation process. However, by watching the following 5 minute video, you will learn how simple it is to wire an external device into your system which will allow you to use a thermostat that needs a C Wire. When I powered the Nest-E back up everything seemed correct, it detected the equipment change, and the R, W and C terminals are lit up in the wiring diagram. The neutral wire from the transformer goes to the C terminal, and the white wire from my boiler is connected to the W terminal. A c-wire is the best option and makes sure that your smart thermostat will have power as long as your house does. Transformers with 150-400mA output are the most widely available online and easily provide sufficient power for the thermostat. Then you go through the step-by-step setup process and your thermostat is ready to use. Available in 20 or 18 gauge with up to 10 conductors.
With R connected to R/Rh (Jumper) If i get a 24V Transformer and hook 1 wire to C where does the other one go. My house has separate heating and cooling so I have 5 wires in total.