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Idea for time clock w/ temp feed back

tim smith
Member Posts: 2,841
I have been thinking about a time clock w/ temp feedback/correction. We work on alot of old single zone small to med apt. bldgs. I have looked around for a time clock w/ temp compensating input. None made that I can find. I know Tekmar etc can do temp adjustment but I am looking into the possibility of making a time clock w/ maybe 4 or 6 on off settings, w/ an outside air input to timer that could be adjusted for if the temp dropped 1 or 2 degrees outside, this would lengthen the on cylcle by an adjustable range of time per increment. So if we had a 2hr on cycle in morning at say 50 degrees outside, then at 40 we may have a 2hr:15min cycle. These old 20-30 unit building w/ single zone are hard to control. I know we could go trvs w/ maybe injection and reset but this timer system would be simple in between way to get better control/efficiency and alot less $$. Just a thought, LOOKING for input, thanks, Tim
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Comments
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Sounds like a steam boiler timer to me.....
Never put one in but they adjust on cycle length according to outdoor temp.
Boilerpro
To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"0 -
steam heat timer
look at heatimer.com............0 -
Heattimer
I already talked to Heat timer, my concern over that one is the fixed max length of cycle and also not very good adjustment of incremental cycle length per degree. Just a thought. Also this type of control w/ plenty of settings could double for steam or for water?? Thanks for the replies0
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