";s:4:"text";s:21178:"The cover is either held onto the back plate by snap clips … See the Stelpro KI STZW402WB+ on Amazon.com. STEP 1 – SOME PREPARATION. I could have continued to use the 2 thermostat wires that were in my wall plus add … In today's video we are taking a look at how easy and simple it is to install a WiFi Thermostat with or with out a C Wire. Our hope for 2018 and beyond (since we own a line-voltage house ourselves!) Then, come back here and follow along! Put the access panel back on the furnace. Each of these wires has a name featuring a single letter (listed below). Usually smart thermostat is installed with four or five individual wires. Press J to jump to the feed. Press question mark to learn the rest of the keyboard shortcuts. A smart thermostat offers both…, WiFi-enabled thermostat reviews and comparisons. Am I correct in thinking that I can just connect that unused black wire to the C terminal on my furnace, and let it serve as my C-wire? Connect the G wire to the C terminal on the thermostat. A C-wire is required for many smart thermostats because they need a constant flow of electricity from the furnace in order to keep the smart components running. Line voltage thermsotat scenario: you have just two wires (white and red, probably), and they’re thick. Here's a picture of the thermostat board: I see there is already something else connected to my C terminal, which I am guessing is my AC compressor. Reattach the thermostat to the wall, connect the hidden wire to the C-terminal, and replace the front plate. Thermostat wire connects the thermostat to the air handler or furnace allowing for communications between the two. Hi everyone! Oh, and you will have to open up your furnace and probably spend 20-40 mins opening things up, applying Venstar’s instructions to your unique situation, and hooking it up. This simple step is often overlooked. First and foremost, check to be sure it is set to “heat”. I noticed an unused blue wire and when I opened the furnace control panel I noticed that the blue wire was not connected to anything on that end either. It worked great….except that after a little while I noticed the house was not … You … Think of the colors as a suggestion: the C-wire is usually the blue wire, but that’s not a standard. C = This is the common wire … However, this thermostat also does not work with line-voltage heaters that use a fan. The addition of a fourth wire, either with an adapter or new wires, could act as the C-wire if properly wired to the furnace. I recently did the same exact thing for 3 thermostats. The ecobee requires a C wire to power on. You most likely have a line voltage system and none of the popular smart thermostats on the market are available to you as-is. The Nest 3rd Gen thermostat has 10 terminals, say Rh, Rc, W1,W2(aux) Y1, Y2, O/B, G, C, etc. In our example, we used an Ecobee thermostat during this install. The c wire, or … thermostat has no C-wire connected into it, but the wire bundle leading to the thermostat does have an unused black wire. Lucky you! To make it continuous requires a common wire … Turn the power for the furnace and thermostat back on at the circuit breaker. C wire adapter kits can allow an existing 4-wire system to work with a thermostat … Here are those options, starting from “most involved” and going all the way to “I hate this stuff, give me something easy”. If your furnace does not have a C … Our ecobee Smart Si thermostat rating: Smart Si at a Glance PROS Easy to create…, You've probably heard the term "low voltage" or "24v" while researching smart thermostats - but…, Heating and cooling account for nearly half of your home's energy costs! Most, if not all, smart thermostat manufacturers have a help line you can call for personalized support, too, so give ’em a call if you’re truly stumped. Let's take a look at the G wire. If you don’t have a C-wire and your heart is set on having a smart thermostat in your home, your have a bunch of options (which can be mostly be boiled down to “get a C-wire” or “get a smart thermostat that doesn’t require a C-wire”). The thermostat should automatically complete these connections when a set temperature is reached. Connect the other wires as instructed in the thermostat connection manual. Best case scenario: you find five wires (white, red, yellow, green, blue) and possibly a sixth black wire. This is, in our opinion, the best option if you can swing it. A subreddit for ecobee and all their smart home products. 2. Now you can control your Ecobee3 with your Amazon Echo! If you do not have a C wire, check your thermostat bundle for spare wires you can use as a C. Make sure this wire is connected to the C terminal on your HVAC control board first before using it as your C. If you plan on adding air conditioning in the future you would need a minimum of 4 wires and if the new wifi thermostat requires a common (C) wire then you would need 5 wire … Everything you need is here! Break an additional conductor loose from its terminals at each end (say R for our example). On the bright side, this option future-proofs your HVAC wiring and will let you choose basically any smart thermostat you want in the foreseeable future! C-Wires are required on all Honeywell Home / Resideo Wi-Fi thermostats. Wait for any cooling or heating to stop, then turn off your furnace/AC breaker. So I connected it to the C in the furnace panel and then to the C in the thermostat. Red/Rc – if you don’… Regarding thermostats, one thing you do have direct control over relates to a single wire called the C, or "common" wire. Have checked and replace fuse on circuit board (old one did not look blown) I am getting 24 volts power on the R terminal measure at the furnace and the thermostat. Remember, this is a site run by tech enthusiasts, not an HVAC expert familiar with your system, so be careful when you mess around with wires! At the furnace, the unused wires are not connected to anything--shown here at the bottom. If you have a baseboard heating system, you’re in luck: Caleo by CaSA is a WiFi enabled thermostat [Amazon.com] designed for use with electric baseboard heaters. Here’s our latest shopper’s guide! If you have a Trane model thermostat, and have a wire labeled X or B refer to your thermostat manual. Almost there scenario: you find three or four thinner multicolored wires. Contrary to its name, the C wire isn't actually all that common. If you want to install a new thermostat that has a C terminal, but you don't have a blue wire because your old thermostat didn't need one, you'll have to install a blue wire. The C wire is more like a neutral wire (in electrical terms) and it completes the electrical circuit between the furnace (or any heating system) and the thermostat, thus ensuring a flawless power supply to thermostat even when the furnace … Also, you’ll need one for every line voltage heater you have, and chances are (if you have line voltage), you have a few heaters. My (horrible old!) You can either run that … The LuxGeo has the option to run on AA lithium batteries and is suitable for 2-wire systems. Plan Your Wiring. This switch may power the low-voltage thermostat as well as the furnace. Thermostat Terminals. Virtually all central heating and air conditioning systems are controlled by a low-voltage thermostat that tells the system when to turn on and shuts it off when the house temperature has reached the desired level. Comparison: Emerson Sensi ST55 vs. Honeywell Wi-Fi 7-Day Programmable Thermostat (RTH6580WF), No C-wire? Detach your current thermostat … If you have 9V, you can pretty well assume that that C conductor is unused. This means it is not programmable by itself. The C (common) wire is supposed to be blue and normally attached to chassis ground at the furnace. Some systems don’t provide this, and it’s not necessarily required by every thermostat, since some can be … Red/Rh – if you don’t have an Rc wire (described below), the Rh wire is the power wire for both – heating and cooling systems. You can also use this wiring … If you already have four wires and just need a fifth to be the C-wire, you’re a good candidate for a Venstar Add-a-Wire adapter. Technically speaking, power flows from the R (red) wire, but not continuously (not on its own, anyway). New comments cannot be posted and votes cannot be cast. Also, the Stelpro is a Z-Wave or ZigBee thermostat. If you just have heating, you might find you use fewer wires than they assume you need to. It should be straightforward, though. Take your pick of the best smart thermostats on the market today. Do you have a C wire? Checked the bundles where they connected to the boiler and found the opposite end of each wire not connected to anything. Well, the R wire is a power source but it does not ensure a continuous supply when the furnace is OFF. Red/R* – power wire for your heating and cooling system. You just need to connect ‘red’ wire from furnace to Rh and ‘white’ wire to W1. Typically, the wires that provide the power (often called the “hot” wires) are labeled R c … Although I’ve seen it stated in several places, it’s not entirely correct to say that the c-wire is what powers the thermostat. (There is some hope with an adapter, but don’t get too excited yet.). If you have a C wire, place it into the C terminal on your wall plate. The red/white wire cable are on C… As of this writing in early 2018 there are not many WiFi-enabled options for line voltage thermostats. The C-Wire, or “common wire” enables the continuous flow of 24 VAC power to the thermostat. Highly-rated alternatives to our best selling smart thermostats. 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. In some cases, one of those wires may be your common. The Rh wire connects to the RH terminal on your thermostat. Behind each thermostat, I had an unused wire. Our guide to low voltage, line voltage, and more, Ecobee SmartThermostat review: premium thermostat delivers comfort and convenience, Server outage? If your current thermostat didn’t need a C-wire, it (or a wire that can be used as a C-wire) might be rolled up inside the wall. Connect the white wire to the "W" terminal on the furnace and thermostat. Make sure you have a wire connected to the thermostat C terminal. The furnace switch is usually mounted on a wall near the furnace, or sometimes even on the furnace itself. If you have a line voltage system you may still be able to get a mainstream smart thermostat if you use an adapter to step the voltage down, such as the Aube RC840T-240. This *should* work. Now, if you have a heat pump or a boiler or other accessories you should check for compatibility on those, too, but chances are if you made it this far, there’s something on the market compatible with your system. The black wire from the thermostat bundle is unconnected on the furnace side, and just wrapped back around the bundle. However, it’s bulky and you’ll probably want to figure out a way to bury it in the wall. With this adapter in place, you can shop for the low voltage thermostat of your choice and use it with your electric wall heater, electric baseboard heater, radiant heat, etc. C: This stands for the “common” wire in an HVAC system, and it provides power to the thermostat. 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