How do I wire ecobee3?
- Step 1: Kill the Power to your HVAC.
- Step 2: Understand A Little About Thermostat Wiring.
- Step 3: Remove Your Old Thermostat.
- Step 4: Install the ecobee Power Extender Kit (PEK)
- Step 4-and-a-Half: Connect the Unused “C” Wire to your HVAC Control Board.
Then, how many wires does the ecobee need?
ecobee thermostats require a C (common) wire to power on. If you only have two wires at your current thermostat, there are a few installation options available, depending on your application. Note: You will not be able to install the Power Extender Kit (PEK) with heat-only 2-wire systems.
Also Know, does the Ecobee thermostat have a battery? The Ecobee comes with one wireless sensor, which is powered by a CR2032 coin-cell battery; the company says it should last about 4 years. When the battery runs low, you'll receive an alert.
Also Know, does the ecobee3 need AC 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.
How do I know what wire to get for my thermostat?
Here are common uses for wire colors:
- Blue or Black – C – Common wire, may be unused by your existing thermostat.
- Red – R – 24VAC power from the furnace's transformer.
- Red – Rc – 24VAC (dedicated to heat call)
- Red – Rc – 24VAC (dedicated to cooling call)
- Green – G – Fan.
- White – W – Heat.
- Yellow – Y – Air conditioner.