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Aha moment with pressure but still???
I have a 100 year old single pipe system in a large Victorian home (9
radiators) that I have been tweaking with many of the recommendations in
3 of Dan's books. Re-insulated lines, new relief valves, balancing etc and have
saved some money and I am now looking at pressure, differential
pressuretrol etc. The pressuretrol sits on a 1/4" x 8" riser and is set
to cut in at .5lb and out with a 1lb differential, basically it's lowest settings. Great right, wrong I
guess, cuz when I put my shiny new pressure gauge on the same riser and
boiled er up, guess what no pressure. I ordered a 15LB gauge because
that is what was on there and not moving. I can blow about 2lbs pressure
into the gauge manually so pretty sure it's fine and there is visible
steam pressure coming out of the riser but I get no reading.
And so the pressure in ounces ??? Is my system operating on ozs of
pressure? Is it possible that the differential pressuretrol calibrated
in lbs (not ounces) and the 15lb pressure gauge were installed by a
numbskull who should have had a pressuretrol calibrated in ounces?
And??? Do I need a pressuretrol calibrated in ounces or do they even exist?