Posted by Harold Kestenholz - Hydronic Network on July 12, 2001 at 09:29:28:
In Reply to: Water level definitions. posted by BoilingMan on July 12, 2001 at 08:26:14:
: 1. Lowest visible part of the water gage glass...
*** is just that. If the water is below the part of the glass that you can see, it is below the visible part. If the water is above the lowest part of the glass you can see, the water is above the lowest visible part of the glass.
: 2. Water at the lowest reading in the water
: gage glass...
*** when you take a look at the gauge glass, the water is a certain distance above the lowest visible part of the gauge glass - that is your reading. Water dances from a low point to a high point while the boiler operates. Yoo want to be aware of the lowest point because it is supposed to be an indicator of water covering the crown sheet or lowest part of the metal that would be exposed without water upon it. The lowest reading could reflect the lowest part of the wave inside the drum.