Thermal Preformance Properties of HestiaPi


#1

Does anyone have thermal performance specs for this thermostat?

Wall coupling (The ratio of the temperature effect of wall temperature to air temperature 1 inch from the wall) i.e. If wall temp is 75F and air temp is 77F and the sensor temps reads 76F then the wall coupling is 50%.

Time constant of the sensor to air temperature changes

Time constant of the sensor to wall temperature changes

Offset of the sensor due to internally generated heat from power supply, backlight, PiZero.

Dynamic offset effect on the sensor due to relays in on/off state versus load current running through the relays.

The above effect the cycle rate of the thermostat.

Any performance results for with respect to NEMA DC 3, Residential Controls—Electrical Wall-Mounted Room Thermostats?

https://www.nema.org/standards/pages/energy-efficiency-requirements-for-programmable-thermostats.aspx?key=67ri900e6rt5af#download

Thanks