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Posted

Can one connect B-vent directly to the draft hood of a gas fired hot water heater?

My understanding is that your not suppose to. B-vent is designed and listed for connecting to other B-vent and that listed transition pieces have to be used to interface to different vent types.

Chris, Oregon

Posted

Hi,

I think it depends both on the type of application and on the manufacturer. The B-vent instructions on the Simpson Dura-Vent site say that it's okay to connect B-vent material directly to an appliance, but when it refers to the flexible B-vent material it says that a draft hood adaptor is required.

ONE TEAM - ONE FIGHT!!!

Mike

Posted
Originally posted by Jerry Simon

On a related note, and perhaps *might* explain why B-vent shouldn't be connected to a draft hood, an HVAC guy once told me screws are not allowed in B-vent. Don't know if either is true, though.

FWIW, it is OK to drill a 1/4 in B-Vent for inserting a CO meter probe - Bachrach tells it's CO class attendees it has letters from the manufacturers.

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