Like many smart thermostats on the market, our BCC family of connected thermostats require a 24vac power supply to operate. This requires that the wiring that connects the BCC thermostat to your heating/cooling equipment has a C-wire (or "common" wire).
While the name "common" implies that you will see a C-wire frequently, you may find that your wiring may not have the required conductor, and this can be especially true in older homes or older HVAC installations.
If you are unsure if you have a C-wire, we recommend that you contact a qualified HVAC professional to inspect your installation.
In the event that your existing wiring does not have a C-wire, and if you are unable to have updated wiring run in place of the existing wiring, we have provided an alternative method to provide power to the thermostat.
If the look at the rear of the thermostat you will see a microUSB socket. Your contractor may use a microUSB power adaptor to provide power to the thermostat and then use your existing thermostat wiring to connect the property's HVAC equipment to the relevant controls terminals on the thermostat.