thanks @SorinB for your reply Regarding opto vs OT2 and 100-w, that's my understanding as well. Also I think that any module implementing OpenThem can control the 100-w boiler. I never tried it myself and I might be wrong. In addition, I'm not confident that any other module can get from 100-w the gas consumption, since the official/ recommended Viessmann OT2 module does not... Probably the limitation is with 100-w and not with the control module. I am not aware of a gas smart meter and I doubt you can find in Ro, where it's not possible as of now to get API access even for energy smart meters 😞 There are some DYI options thou: 1) Optically read the counter via some ESP and a camera, then do OCR to get a number. 2) Pulse reading sensor - depending if your meter gives such pulse signal YMMV, depending on location/ease of access to the meter. Unfortunately since these are not build it, will be hard to have 100% reliability. So be ready to tinker or adjust manually the consumption now and then...
... Mehr anzeigen
