Posted by: Rolly
What Pressure are you running? You should always shoot for 200 degrees over the saturated temperature of the pressure your running. No one can tell you temperature you are running; it all depends on your burn rate. Ten feet is a good length in a 18-inch boiler. Iím assuming your talking 18 inches in diameter. 445 PSI is 455 F +200 is 655F 550PSI is 477 F + 200 is 677F More then this is unlikely but I have run 800 F at times. If your burner just comes on and you come up to a light. Your cooking your supper heat. I have installed super heaters 14 feet in the combustion chamber under a 23Ē boiler and have not gone over 700 F when running down the road.
You should pick yourself up a pyrometer, not necessarily this one but something to do the job.