From: "Tomes" 
Newsgroups: alt.home.repair misc.consumers.house
Subject: Re: Smarter Programmable Thermostat?
Date: Fri, 24 Feb 2006 15:46:34 GMT

"LDC"  wrote in message 
news:ck7tv1l2c05qu87cv4p03qfal2hftn902s@4ax.com...
> On Fri, 24 Feb 2006 03:52:23 GMT, "Tomes"  wrote:
>
>>
>>"John"  wrote in message news:43FD43C4.C41018AB@no.spam...
>>> Are there any thermostats (any type) that are smart enough not to
>>> turn on the heat at 10:55 when they are programmed to set back at
>>> 11:00?  It seems wasteful and hard on the equipment to do so.
>>>
>>
>>In this case I would just set it for 10:55.  The time set is when the
>>instruction changes.
>>Tomes
>
> I think you missing the problem as that doesn't solve anything.
> Regardless of what the time the change is set he is trying to find a stat
> that is smart enough to avoid a 2 or 3 minute truncated "on" cycle at the
> end of a program period by anticipating the pending change.
>
> Using made up numbers, the stat would only come on if it could get a full
> 10 minute or longer "on" cycle,  So while the program setting changes at
> 11:00, the latest the unit would come on would be 10: 50.  If the unit was
> already running at 10:50 it would continue to run as long a necesary up to
> 11:00.   If the unit was off at 10:50 it would anticipate the 11:00 change
> and  would not start an "on" cycle..
>
>

.... and this is exactly the same as setting it to 10:50.  Really, it is. 
The same things are happening at the same times.
Tomes