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Replacing a Pressuretrol with Vaporstat
I have spend the last 2 or 3 hours reading prior posting on this topic. Wow, a lot has been said. And now I know a whole lot more than I did. So I will not repeat info from all of them.
What I really want to know is if some kind soul can point me to directly which exact model I should get for my system. I have a one-pipe system. And I want to set it at about 1 pound. I have at least already figured out that I need one that goes from 0 to 4 psi. And as for how the vaporstat "breaks," I am at a loss to understand what this means. And do I need to know the voltage before I order a particular model? I have added pics of my current pressuretrol. And there are Honeywell vaporstats (currently) at $169 at pex supply, which seems to be about only $50 more than a pressuretrol. I see the Honeywell L408J1017 and the Honeywell L408J1033 at pex at <a href="http://www.pexsupply.com/pex/control/search/~SEARCH_STRING=vaporstat">http://www.pexsupply.com/pex/control/search/~SEARCH_STRING=vaporstat</a> but honestly I cannot figure out which is correct for me. So that's the enirety of my question.
(This is an aside, and not the point of my posting, but In case people are wondering, and to cut short long discussion on why I would even want a vaporstat for a simple one-pipe systems, in my case, this is why it makes sense -- I often leave the house for several days and turn down the heat to 50 -- and when I come home and turn it up to 70, the pressure builds up -- and I do not have luck with my current pressuretrol which I think I broke when I accidentally filled my system with water until the water shot out the main vents (a long story that).. And I have several weak spots -- an old joint in the return that is prone to spitting, a union in the main that drips, and an old valve on a rad that leaks -- and all those drips/leaks/spitting starts to happen at about 2 pounds. And my rads fill up nicely at about 1/2 pound. So I need more control.)