I plan to switch my heating from an “automatic” system to a smarter one.
Boiler automatic running all the time ( inside thermostat of the water boiler )
-floor heating controlled by wire thermostats and multiple zones controlled by automation
-several radiators with water controlled by “hand” thermostatic heads.
1.boiler on only when needed
2.keep existing floor actuators and wire thermostats in parallel to some smart device
3.replace radiators heads with smart ones
we need riability and encryption
And minimum interference to the existing system
for point 1 I see a parallel connection of a wired thermostat in the boiler room ( just to be safe smart system goes off) with a smart commanded relay or some sort of boiler control
for point 2 - I saw that a thermostat controls the zone by impedance change …
My Idea was for each wired thermostat which controls a zone of the floor heating to put in parallel some sort of smart device which can tell to the existing floor heating control to open actuators…now is there any such device available on the market ?
( I do require to keep a working existing system)
for point 3 - There are many available options… zigbee or zwave which device would you recommend?
I looked at Fibaro, nice ones but one question : what happens if battery brakes down ?
I mean I want a working system for many years .
Anybody with similar projects around ?