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Pressure switch settings

drhvac Member Posts: 190
Where could I find charts on pressure switches? When you have a pressure switch fault, how are you suppose to determine if the problem is with the furnace or pressure switch if the pressure switch manufacturer doesn't put the design cut out pressure on the switch? Burns me up when this happens. I see this with Honeywell, Tridelta, and some other manufacturers. What does it take for these f...... manufacturers to stamp the pressure on it??