Ecobee ecobee3 - Step 2: Remove Old Thermostat; Thermostat Cover Removal; High Voltage System Warning

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Step 2. Remove old thermostat
If you don’t have an existing thermostat, skip to step 3.
Remove the cover from your old thermostat. Most snap o
easily but some may be attached by screws.
Warning! If your old thermostat has 110/120V
wires connected to the thermostat, it is a high
voltage system and is not compatible with
your ecobee
3
.
Rc Rh G Y W C
110/120V
!