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Been quite some time since I've had to participate. A few years back, with LOTS of help from this site, I updated my near boiler piping, replaced my pressuretrol with a vaporstat and installed the Honeywell Visonpro t-stat. I must say the system is operating near perfection!
My question is about the installed main vents. I currently have 2 Hoffman 4A vents attached to one 15 ft 2" main and one 14 ft 2" main. Is the venting capacity adequate or should I look into installing Gordon #2 vents.
Thanks for taking the time to answer this question.