How many wires do I need to install an ecobee thermostat?
| Type of system | Minimum wires needed | PEK compatible? |
|---|---|---|
| Cooling-only | 4 (R, C, G, Y) 3 if PEK is used | Yes |
| Forced-air furnace (1 stage heating, 1 stage cooling) | 4 (R, G, Y, W) | Yes |
| Heat pump with 1 stage of auxiliary heat | 5 (R, G, Y, O, W) | Yes |
What wire is ecobee thermostat?
ecobee thermostats require a C (common) wire to power on. If your current thermostat uses only two wires (R and W, or T and T), there are a few installation options available, depending on your application.
Does ecobee work with 4 wires?
Even though Ecobee does not require a c-wire, you still need to have a 4-wire thermostat cable because they require a power extender kit. You will connect the wires from your furnace to the power extender kit and then to the thermostat.
Does ecobee need C wire?
Your ecobee3 does not need them. Some thermostats do not have a C-wire. The C-wire is used to reliably provide power to the thermostat. In this case, the PEK can use the existing wires to power your thermostat.
What are the 7 thermostat wires?
Here is the industry standard thermostat wire color code used for most systems:
- White. The white wire connects to your heat.
- Yellow. The yellow wire connects to your compressor.
- Green. The green wire connects to the fan.
- Orange. This wire connects to your heat pump (if applicable).
- Red (C).
- Red (H).
- Blue.
Does ecobee work with stranded wires?
If you have a high-voltage setup, a smart thermostat isn’t going to work. For Ecobee thermostats, 120V and 240V systems (such as baseboard heating) will not work at all.Google Nest also points out that its thermostats won’t work with systems that use stranded wires or stranded wires that are connected by a wire nut.
What color is C wire?
Blue wires
Blue wires are also called C wires because they are the Common wire. C wires are necessary for any smart thermostat that needs to be connected to a power source 24/7, regardless of your heat pump type.
Where does Aux wire go on ecobee?
If you have a heat pump system with auxiliary heating, you will normally connect the wire labelled AUX/AUX1 or W2 to the ecobee’s W1 terminal. If you have two stages of AUX heat, connect the AUX2 wire to the ecobee’s W2 terminal.
What does ecobee Pek do?
But what exactly is the PEK, and how does it work? The Ecobee Power Extender Kit works by connecting to your home’s existing thermostat wires to create a complete circuit; this provides continuous 24-volt AC power to your thermostat for homes that don’t have a C wire.
How do you know if you have C wire?
It is easy to see if you already have a c-wire connected to your system. Simply remove your current thermostat face from its baseplate and look for the terminal labeled with the letter c. If this terminal has a wire attached to it, you have an active c-wire.
What is the Blue C wire on a thermostat?
The blue wire, or C-wire, is known as the common wire. It’s there to provide power to the thermostat. Older thermostats usually don’t have a C-wire because they either don’t need power or, if they do, they get it from a battery.
How do I know what wire to get for my thermostat?
Look for connectors that have labels that are the same as your thermostat. For instance, you might find labels like R, W, G, Y, C or O/B. You should find wires attached to these connectors that are the same color as the wires that connect to your thermostat.
What is a common wire?
The C-Wire, or common wire enables the continuous flow of 24 VAC power to the thermostat. It’s a wire that (if you have one) runs all the way from your furnace to your thermostat.This bundle green, blue, yellow, white, and red color wires is known as 5 conductor wire and it is a common type of thermostat wiring.
What color is E wire on thermostat?
Brown
Thermostat Wiring Color Code Chart
| Marking | Wire Color Code | Description |
|---|---|---|
| E | Brown | Emergency heat relay |
| Y | Yellow | Primary cool call relay |
| Y2 | Yellow | Secondary cool call relay |
| G | Green | Fan relay |
How is your O B reversing valve energized?
Heat pumps will have a reversing valve, which switches the heat pump from heating mode to cooling mode. The valve will operate in one of two ways: 1) O reversing valve (energized in cooling) or 2) a B reversing valve (energized in heating).
How do I add AC to ecobee?
To enable this system mode, go to Main Menu > Settings > Installation Settings > Thresholds > Auto Heat/Cool and select Enable.
How many wires does a smart thermostat need?
In order to use an adapter kit, there must be a minimum of four wires currently present on your thermostat and HVAC system.
Can ecobee control my HRV?
The Ecobee can control an HRV or humidifier but not both. The Ecobee will only control 1 of the HRV fan speeds and has a good humidifier frost protection option so I would use the Ecobee to control the humidifier. The Vanee Lite Touch Control #40270 is cheap to buy and would need 3 wires. B, G and Y.
What does the C wire connect to?
A common wire (C-Wire) provides Wi-Fi thermostats continuous power by connecting it to a heating and cooling system (e.g. furnace). C-Wires are required on most Honeywell Wi-Fi thermostats, with the exception of the Smart Round Thermostat (formerly known as the Lyric Round).
Is C wire the same as RC wire?
The C wire, or common wire enables the continuous flow of 24 VAC power to the thermostat. Technically speaking, power flows from the R (red) wire, but not continuously (not on its own, anyway).
Can ecobee be installed with 3 wires?
If you have a heat-only system, you may notice that your thermostat has three wiresR, G, and W. In this scenario, the Power Extender Kit (PEK) is not compatible. There are three options available to create a C wire and make the ecobee compatible.
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