Transition pc connection to class B vent piping

[e-man]

Natural gas garage heater Vertical vent class B pipe. What’s the connection pc to the transition pc on the heater

 

[fitter30]

85% efficiency or less heater? If yes 26 gauge pipe and fittings. Going to need crimpers and a 4" angle grinder with a thin cut off wheel is easier than snips.

 

[PoorUB]

As long as you have 6" clearance to combustibles you can use single was galvanized pipe, but get the heavier wall, 24 or 26 gauge. Do not use 28 or 30 gauge.

I would run it out to a "T" fitting with a cap so you have a drip leg to catch moisture and debris, then up into the B-vent. Evrything in red would be B-vent.

 

[Jackfre]

What NG “Garage Heater?” Follow the manuf instructions. If you are trying to minimize or eliminate condensation and depending upon how long the vent connector (that portion from the appliance to the rated B-vent exiting the building) is, you might consider using B-vent all the way. Code says you can go 1.5’/inch diameter of vent, but the system will be better with an insulated flue. Look at the web site for the manuf of your B-vent. They will show the appliance connector to get you off the appliance

 

[D45]

Are you talking about the draft hood connection?

M&G DuraVent 3" 3GVC Round Gas Vent Draft Hood Connector MG Type B 662492000175 | eBay

New, never installed.

www.ebay.com

 

[fitter30]

What's the brand and complete model of the heater. That stainless fitting concerns me.