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Why does this set up "work"?
Did a service call for a steam boiler this week... It is a 4 sec. Weil SGO w/ a Carlin EZ gas burner. Added a Field MG1 and a spill switch that was missing. Nat gas. About 1 and 1/2 yrs old. It was piped in 1/2 CSST about 35 feet from the meter. Looking at the gas charts the pipe capacity is about 50K BTU. Burner is about 150k input. I clocked the meter and I get 148k. How can that be?