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Can you vent mains too quickly?

I have a building with 240 feet of 5 inch mains, from the header it runs into a 15 foot section of 10 inch pipe, then it tee's off in each direction into the 5 inch mains and wraps back around to the boiler, 1 leg 140 feet and the other 100 feet, into 2 hartford loops then into the boiler. It had 1 Hoffman #75 on each leg, I have replaced them with 3 gorton # 2 on each leg. In reading "The Lost Art of Steam Heating" It says to get the air out fast, My question is, did I go too far, or not far enough?



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