Sealed boiler

John Mills_3

a sealed combustion boiler with standard B-vent venting? Standard efficiency is all we need but want capability of intake air. W-M CGs would do but requires stainless venting. This is for a home greenhouse. Will have more questions about the project later <g>

Paul Pollets

Sealed combustion venting

Sealed combustion boilers can't use B-vent. Vent pipe is usually 3" or 4" stainless steel. I like the Viessmann Vitodens or the Buderus GA124 series. The Vitodens uses 1 6" "co-pipe" pipe with both flue gas and combustion fresh air within; the GA124 uses a separate 3" stainless pipe and a 3" CFA pipe (usually 26 or 28g galvanized). A floor drain is required for condensate.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Paul B._2

Cat. I vent

Give me a call at work on thursday the 2nd if you like. 603-335-6300x562. I'm out of the office on wed. doing some Heatmaker Service training, but we do have some boilers that are Catagory one verticle and vent with B vent, or they can be Catagory III sidewall and vent with stainless.

They start at abot 320 MBH input.

Paul.

John Mills_3

Thanks Pauls

Guess we better make a standard boiler work. Sealed boilers are pricey enough but adding in stainless will really hurt. Don't need above 200M.