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Jeff Eastman
05-15-2007, 06:59 PM
................

Bob Harper
05-15-2007, 09:53 PM
Appears to be B-vent hacked open. Not approved by vent mfr. and thus codes. Should have spent the few extra bucks on a draft hood connector and not ruined a section of venting.

FYI, every single furnace I see has improper clearance to the PVC drain line.

Thom Walker
05-15-2007, 09:56 PM
Bob,

Am I having another false memory moment or aren't evaporator coils above the heat exchangers soon to be discontinued?

John Stephenson
05-16-2007, 05:56 AM
Isn't it 1" clearance from b-vent to combustible or is there an exception for PVC?

Bob Harper
05-16-2007, 06:48 AM
Where is there any B-vent within 1 inch of that PVC?

That's single walled pipe for about one foot so it's 6". The coil mfrs put the drain right in a place where it must pass within 6" of the appliance collar. I've seen them heat stressed and leaking.

Jeff Eastman
05-16-2007, 07:19 AM
Single wall pipe! Duuuuuuuuuuuuuuuuuuhhhhhhhhhhhhhhhh!!!


Is it allowed to mix single wall with double wall?

Michael Thomas
05-16-2007, 07:28 AM
"Single wall pipe"

Is it?

I appears to me that there is an interior pipe visible just above the furnace casing and also an exterior pipe which is fitting over (is the male end) of the connection with the B-Vent. What did the labeling on the left side of the pipe say? I'm not saying this is right, but it appears to be more complicated than just a single-wall segment between the and the start of the B-Vent.

Bob Harper
05-16-2007, 05:52 PM
When you hack one end of B-vent off, it become single walled vent connector.