On Sunday, February 4, 2018 at 6:00:49 PM UTC-5, dpb wrote:
On 2/4/2018 3:29 PM, Cindy Hamilton wrote:
...

I've never understood the "precision" argument. Does it matter whether
it's 70, 71, or 72 F ? I suppose 31, 32, and 33 F are more significant.
...

Well, there's the same question around 212, too, from that standpoint...

I ran into a minor instance here just recently -- fixed up a monitoring
system in the well house to alert me if the temperature drops that
indicates I need to go relight the gas heater (occasionally the high KS
wind will manage to blow out the pilot). I used a cute little $6
digital thermostat module in "heat" mode to turn on an LED in the window
I can see if temp drops below setpoint.


So when it calls for heat it closes a contact?

Ingenious.

Um, what's the dead band set to?