I had a bew Bryant system installed to replace my dying original house heater and AC systems. The old system had a z-wave thermostat that I installed and was nicely integrated with my Vera. The new system came with a very nice touch screen WiFi thermostat and it can be remotely controlled via Bryant app (Android and iPhone) as well as desktop and via website. However, there is no API documentation and it seems that access is controlled via Bryant server that thermostat connects to and apps connect to as well. This is the same system as Carrier uses and it is called Carrier Infinity touch control thermostat.
Anyone has experience with those and is there a way to integrate them with Vera?
Jist wanted to bump this up in case if anyone has any info. Really disappointed that there is no API for this thermostat or way to communicate with it outside of Bryant server. I even looked at replacing it with a simple Trane z-wave thermostat that I had before but it seems it is wired a bit differently and I don’t want to mess up the system.
There has been only one previous discussion here on the topic of interfacing with an Infinity Touch Wifi thermostat - which also went nowhere since (as you have noted) there is no API documentation for it.
Carrier Infinity thermostats communicate with Carrier’s heating and cooling equipment using a 4 conductor cable - 2 conductors carry 24VAC, and 2 conductors are used for serial communication that apparently follows the RS-485 standard. Carrier has not made available any information about it. If you search on that topic on the internet you can find some work that has been done by people trying to figure out the data communication protocol used by Carrier’s equipment. It seems (to me) that no one has ever really figured it out. Network communication with the newer Infinity WiFi thermostats adds a whole other level of complexity - and since it is proprietary to Carrier it will likely never be figured out.
Carrier’s (and Bryant’s) heating and cooling equipment certainly can be controlled with a relatively conventional thermostat like those sold by Trane and Nest - all the standard connections are present on the equipment’s control circuit boards. As you mentioned in your first posted message, connecting a conventional thermostat would require you mess with (ie rewire) the system. Furthermore, by controlling this equipment with a conventional thermostat you lose out on all the features provided by Bryant’s thermostat - such as integrated control of all components of the system, and monitoring of all the operational characteristics and system errors/faults of the equipment.
[quote=“hmb, post:3, topic:185269”]There has been only one previous discussion here on the topic of interfacing with an Infinity Touch Wifi thermostat - which also went nowhere since (as you have noted) there is no API documentation for it.
Carrier Infinity thermostats communicate with Carrier’s heating and cooling equipment using a 4 conductor cable - 2 conductors carry 24VAC, and 2 conductors are used for serial communication that apparently follows the RS-485 standard. Carrier has not made available any information about it. If you search on that topic on the internet you can find some work that has been done by people trying to figure out the data communication protocol used by Carrier’s equipment. It seems (to me) that no one has ever really figured it out. Network communication with the newer Infinity WiFi thermostats adds a whole other level of complexity - and since it is proprietary to Carrier it will likely never be figured out.
Carrier’s (and Bryant’s) heating and cooling equipment certainly can be controlled with a relatively conventional thermostat like those sold by Trane and Nest - all the standard connections are present on the equipment’s control circuit boards. As you mentioned in your first posted message, connecting a conventional thermostat would require you mess with (ie rewire) the system. Furthermore, by controlling this equipment with a conventional thermostat you lose out on all the features provided by Bryant’s thermostat - such as integrated control of all components of the system, and monitoring of all the operational characteristics and system errors/faults of the equipment.[/quote]I appreciate your time to respond. For now, I put a link to their app as one of the buttons on ImperiHome page and it looks more or less integrated in the UI. Can’t program any scenes of course, but until API is documented or reversed engineered, it won’t be possible it seems. I don’t have the knowledge to do it… so hopefully someone, someday.
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