[Monster]

Ken, I think we are almost saying the same thing however, by you own example the tstat is controlling the running temp. The 195 is trying to keep the system at 195 and the 160 is trying to keep the system at 160. The opening/closing of the 195 will keep the system at 195 and NOT allow it to run cooler however the 160 is trying to stay at 160 and not throttling, so the temp can stay at anywhere from 160 up. If the disapation of the system allows it to run at 170 it will/can stay there, the 195 system will always want to go to 195 and stay there. A cooler tstat can affect the running temp...................if this is correct. (we are talking about summer conditions 80+ degrees and not colder winter conditions)


Now for an added twist, Are there different size openings available for tstats ? To small of an opening would seem to cause excesive restriction and lead to a higher runninig temp.
(Ken I like your tstat abrv. easier to type)


Thanks,
Mike 'monster'