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Posted by Dave Mc on February 09, 2009 at 13:30:39:
I want to crank up the pressure a little on a single pipe system to help track down any steam pressure leaks (at the fixtures, valve packing, rad fins, etc.)
A Heat-Timer tech said that 5-6# probably won't hurt the vents. What about other components...Site gauge, packing, Pressuretrol...?
I'm pretty sure there are various leaks, the system will drop pressure from the moment the pressure cut off engages. This causes the boiler to continually cycle, every minute or so, until the thermostat is satisfied. (Obviously by my concern) This continues to happen after all the rads are up to temp and the vents have closed. So I need to find the leaks!
The system should hold normal operating pressure for a while shouldn't it? (I'm running it 0.5-1.5#)
How high of a pressure is safe, or advisable, to take the system up to for testing (8-10#?) and, is this even a good idea? Will the additional pressure just force more leaks?
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