So check R if there’s a wire of ANY color in your thermostat’s R connector. Nest Learning Thermostat, 2nd gen Some systems can’t deliver enough power (at least 20 volts) over the existing system wires, so a Nest thermostat’s battery may slowly drain and eventually cause the thermostat to turn off. If you’re not sure what type of system you have, or if your system is compatible, you can always ask a Nest Pro. Some system hardware such as gas valves and zone or relay panels require a C wire to work with Nest thermostats. These protocols are specific to the manufacturer of the system – they aren’t standardized across the industry, and only thermostats made by the same manufacturer are compatible with these systems. Nest thermostats also have a star connector *  that offers you some flexibility for installing specialized systems. This can usually be fixed by connecting a C wire. If you have an older thermostat there may be a mid-plate that also needs to be removed to expose the wires. Easy to install, learns your schedule, programs itself, and uses Wi-Fi to connect to your phone. Instead, C wires help deliver power from the system to the thermostat in case the other wires can’t provide enough power. If you think your system uses a proprietary communications protocol, contact a local Nest Pro installer in your area for help. You have a dual fuel system if you have a furnace inside of your home, and a heat pump on the outside of your home. 3rd gen If you have a gas or electric meter in your apartment, the heating valve is probably located nearby. Some international systems, such as Buderus boilers, have dry contacts or other incompatible wiring. The Nest thermostat and Nest app will show you system status information without connecting L wires. – Technology makes a better life and it’s true. The Nest thermostat is compatible with these systems and supports up to 2 alternate heat sources. If your heating valve is located in the basement or outside of your apartment, a Nest thermostat installation may not be possible. Contact a local pro. North America; Canada (English) Canada (Français) México (Español) United States (English) Europe and Middle East; ​See the sections below for more details about specific systems and compatibility with Nest thermostats. If there is more than one large strand, the wiring isn’t Nest compatible. If you need to know more about what the labels on your thermostat wires mean, read the following article for more information. Hello. To learn more about specific system type compatibility, see the sections below in this article. The method may depend on your local electrical code requirements. L wires are typically used to show system status, like emergency heat being on. But if you find that you need a C wire with a Nest thermostat, you can  contact a local pro to run one for you. District or collective heating systems that are controlled by an accessible individual electric valve are compatible with Nest thermostats. If you have one of the system types below, it won’t work with a Nest thermostat. original permalink. Here’s a list of some known panels that require a C wire. High voltage thermostats should only be installed or uninstalled by a professional due to the high voltage that they carry. A Nest thermostat can also function as a humidistat to control your home’s relative humidity. If you would like to find out more information about installing a C  wire,  contact a local pro. I am thinking about buying a Nest Thermostat, and would like to put it in my hall, where the old honeywell Stat is, but I am not sure if the wiring is compatible. A Nest Learning Thermostat: The Nest Learning Thermostat is usually compatible with only the 24V low voltage systems. During setup, the Google Home or Nest app will guide you through steps to tell you if your system is compatible with your Nest thermostat before you install it. This list is not meant to be comprehensive, so your system may be incompatible even if it isn’t listed here. Page 20: Installing The Nest Thermostat In A New Spot Installing the Nest Thermostat in a new spot If you’re installing the Nest Thermostat and aren’t connecting it to any cables within the wall, then you’ll need to: 1 Install the Heat Link first 2 Remove or configure the programmer 3 Attach the Nest Thermostat … However, converters are available from some manufacturers that may let a proprietary boiler work with a Nest thermostat. High voltage thermostats are often built into the wall and typically have two to four thick wires coming out of the thermostat. Check thermostat compatibility for Sensi Smart and Sensi Touch Smart. I recommend that you go to the official Nest thermostat website, as they have a great compatibility test tool on there that let's you enter the quantity of wires that you have and it will tell you if the Nest stat is compatible … There are two main reasons that a heating system may not be compatible with Nest thermostat: it’s high current or a proprietary system. I just want to make sure it’s compatible before I get someone to install it. Fil pilote thermostats can also have different modes such as: On, frost, night, and day. Even if your system has sensor wires, it may still be Nest compatible. Contact a local pro. Both Nest Thermostat E and 3rd gen Nest Learning Thermostat are compatible with fil pilote electric radiators, but installation will be a little different depending on if you have a fil pilote thermostat or not, and what thermostat you’re installing. Nest Thermostats can be retrofitted to work on single and 3 fan speed modes; Single fan speed mode requires the presence of 4 wires to thermostat location; Three fan speed mode requires the presence of 6 wires; Thermostat locations with 3 wires, requires the installation of an additional wire saver module to add the 4th wire for single fan speed. Proprietary systems use a serial communication protocol between the system and the thermostat. I have attached a photo. Simply enter which connectors have a wire and ignore the color of the wires. It is important to choose an air conditioner that matches the capabilities of a high-tech thermostat, such as a Nest product. This article includes drawings and electrical wiring diagrams explaining how to set up and wire a Nest thermostat, humidifier and furnace. While most heating systems are high voltage (usually 230V), usually they only use a little bit of current at a time (up to 3A). If you don’t have a thermostat to control your district heating, you may still be able to have a Nest thermostat installed if your heating valve is accessible to your installer. Tip: You can listen for your system to turn on, or put your hand near a vent to feel if there’s warm or cool air coming through. Get an answer from an expert on the Google Home Help Forum. Nest thermostats are compatible with a wide range of HVAC systems, especially the Nest 3rd Generation Learning Thermostat. If you have one of these systems,  contact a local pro. Nest thermostats work condensing boilers that have standard On/Off control. Welcome to the Wyze community @Senthil! Ive included a picture of the wiring for the old thermostat and the connections for the new nest thermostat. Systems that use micro-controllers instead of relays are sometimes more sensitive to power sharing. Change the temperature on your thermostat by at least 5 degrees. It’s important to check that the smart thermostat is compatible with your central heating system. The installer must have access to the heating valve so they can connect it to the Nest Heat Link, which is included with your thermostat. It can be hard to determine which set of labels to use in the compatibility checker. Click our page to learn more. We are experiencing longer than normal wait times for support. Multi-zone controls Look closely at the end of one of the thermostat wires. The following Nest thermostat installation manual will teach you how to hook up the thermostat to the wall, set it up, add it to your Nest account and start using it all on your own. We appreciate your patience and understanding during this time. Note: If your wires are stranded, you may be able to contact a local pro to cap, solder or replace stranded wires with a solid core wire, which will work with the Nest thermostat. Meanwhile, the Hive Active Heating is compatible with gas, oil, LPG and some electric boilers. This site uses cookies from Google to deliver its services and to analyse traffic. Here is a brief compatibility test guide Discover connected home devices from Nest – thermostats, indoor and outdoor security cameras, smoke and carbon monoxide alarm, security system, video doorbell and more. If it’s summer and you have system cooling, turn down the temperature. Use the Compatibility Checker to make sure your home’s system is compatible with a Nest thermostat. If you already have a thermostat in your apartment, then it’s likely that you can have a Nest thermostat installed. These include: 2 Nest thermostat can only support one of these systems at a time. Nest thermostat have been designed to work with many different types of heating systems, including boiler systems. The Nest Thermostat only supports low current systems since they are by far the most common. ... You may also want to check the information I have added on my , the videos all include wiring info so I’m sure this will help make you more confident. Problem Solution ; If the Nest thermostat isn't getting enough power from W or Y and there is no Common wire: While we find that in the vast majority of homes the Nest Thermostat can charge its built in battery by power sharing from the regular heating and cooling wires. By this step, you should have confirmed that your existing installation wiring is compatible with your new Nest thermostat. High voltage systems are usually electric baseboard heating systems or other radiant systems powered by electricity. Can you guys please give me a second opinion? Choose a product. 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