I'm looking at further expanding my home automation.
I want to install TRVs on radiators and a thermostat to switch on / off the heater and pump when the TRV on a radiator is open. Ideally, i would also want additional temperature sensors since, the sensors built in the TRVs are not reflective of the actual room temperature.
And it's not very promising.
It would seem it might just be easier to buy a netatmo system off the shelf.
Is there anything that works with hubitat without wasting a massive amount of time?
Thank you very much
so I am still struggling to figure out how to use hubitat.
I would be grateful for some help here, it is really not easy.
First on the device selection:
I ordered the Moes Tuya ZigBee 3.0 Smart Radiator Actuator and I have yet to be able to get hubitat to recognize it.
Is it possible that despite being Zigbee 3.0 hubitat won't read it? or maybe I have not been able to put it correctly in pairing mode?
Then I am still looking at other devices and i wonder if there is decent support for the Eurotronic Spirit Zigbee version. @simon I saw you did an excellent job on the z-wave version but I am developing my mesh to be zigbee and unless strictly necessary I am thinking of sticking to zigbee.
Then another major question that I have yet to understand:
does the Thermostat Scheduler app work without a wall thermostat like the following: Zen zigbee thermostat
In my understanding the hubitat Thermostat Scheduler is the equivalent of a wall thermostat. However i would still need somethng like a zigbee switch to enable the heater pump. Just having the TRV open is not enough unless the heater starts and pumps hot water through the system.
Am I understanding this correctly?
I use Z-Wave room thermostats (I currently have 8 of them) - they are Secure SRT321's - they simply allow to to set the desired temperature and they measure current room temperature. If the set point becomes higher than the room temperature it calls for heat. I use Thermostat Scheduler to automatically set these set points depending on the time of day.
I wrote an app for Hubitat that activates when a thermostat calls for heat and turns on my boiler - that's another Z-Wave switch. The boiler has two heating zones and a hot water zone. So I have two copies of my app running for the heating zones and I have another similar app that I wrote that controls the hot water.
I can't comment on the Tuya TRV as I have never tried one,
Thank you very much Simon.
so if I don't get a wall thermostat I would at least need a temperature sensor which is what I bought.
I have another question regarding best practices to set this system up:
How do you deal with the switching on/off the boiler when called by multiple sensors?
I see an edge case when:
Sensor A is above the setpoint and the boiler is activated
Sensor B is above the setpoint and the boiler is activated
Sensor A is below setpoint BUT Sensor B is still above the setpoint. There is a conflict here, sensor A will want to turn off the boiler because it's done, but Sensor B will want it to keep running.
Obviously what we want is to close the TRVs connected to sensor A and allow the boiler to run.
My app allows for multiple thermostats.
If any one calls for heat the boiler goes on.
If none are calling for heat anymore then the boiler goes off.
I have additional logic (currently a bit of a mess) that sets eTRV's based on the setpoint of the corresponding thermostat.