I have a pretty standard residential boiler setup with a pressuretrol. Unfortunately, my pressuretrol doesn't seem to be very precise, and at the absolute lowest settings, on a longer run, my boiler still builds up to 4-5 psi of pressure.
A vaporstat is fairly expensive - a friend who does energy consulting thought I wouldn't get a reasonable payback on the expense from an energy savings perspective. Plus, I've read mixed things about the new design (non mercury) ones.
I was thinking of adding a Dwyer A6 in the same circuit as the pressuretrol. That way, if the Dwyer fails, the pressuretrol would still regulate pressure.
I might add a "delay on break" timer to reduce cycling.
I'm new to all this, though I've done a lot of reading. Is there anything I'm missing? Can anyone come up with why this is a bad idea? I haven't seen anyone else on the forum discuss Dwyer or alternatives to Honeywell pressure controls.
I'd buy the A6-15322, since I want to keep pressure below 1 psi.