"Mark Lloyd" wrote in message
...
On 12/26/2015 02:37 PM, Kirk Landaur wrote:

[snip]

I get all that - but what I don't understand is *where* the
hysteresis is built in? Is it in the computer? Is there a dial
that sets the temperature range of the hysteresis? Is there
a potentiometer?

The mercury switch provides some hysteresis.

How do we *change* or *set* how much hysteresis there is?
Specifically, how do I get *more* hysteresis in my furnace?



--

That's the main reason it is so important to level the t-stat.