Type B vent question - http://www.hvacmechanic.com/ Forums
Original message
| brent_h
 |  "Type B vent question"
, posted Fri 11 Jul 02:49  
I've noticed that most gas furnaces have the vent connection located within 2 inches of the front of the plenum. Does this require that type B vent be used if the plenum is insulated? The single wall vent requires 6" clearance from combustible materials which I assume includes bubble wrap foil insulation on the plenum.
My old furnace had single wall vent from the type B penetrating the ceiling, but I don't see how this complies with the 6" rule. Thanks.
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Replies:
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| Houston204
| "Re(1):Type B vent question" , posted Fri 11 Jul 08:40
Type B vent should always be used unless it is a condensate furnace, which uses pvc venting.
Single wall metal vent is dangerous.
"Tip of the Day" Remember to remove power first.
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