You will need to create a service account or use an existing user account in the TCC portal for Events2HVAC to login to the remote API and send commands to thermostats.
Since the API talks to the TCC portal in the cloud, a reliable Internet connection is required between the local facility where Events2HVAC is running and the TCC portal. If the Internet connection goes down, the last commands and setpoints sent to the thermostats will remain in effect until the local thermostat is changed or the connection is restored.
Events2HVAC will send alerts to email addresses subscribed to receive them if commands are not getting to the thermostats. This will enable alert subscribers to take action can if needed.
Events2HVAC does not create schedules on the thermostat, but sends the scheduled commands to the thermostat at the appropriate time based on the event schedules. Events2HVAC will automatically override local thermostat schedules during the occupied mode by sending a HOLD command to the thermostat. Optionally for unoccupied mode, you can either HOLD unoccupied setpoints or return the thermostat back to the current scheduled period.
You can always override the current thermostat command at any time, but when the next event’s command is sent, Events2HVAC will take over again.