On Wed, 17 Jan 2007 17:28:33 -0500, Bubba
wrote:

On Tue, 16 Jan 2007 22:15:18 -0600, "Steve Barker"
wrote:

I wonder if he's ever heard of an ELBOW.? Aim it down or sideways and it
should avoid both problems. DUH

Down or sideways? Duhhhh yourself. Obviously you've never looked at
the installation manual on venting a 90% eff furnace.
You would have many many callbacks with that "fix".

My inclination, (without benefit of instructions)
would be to 'T' it into a larger pipe, pointed up and down,
and open at both ends. But not until a problem
became apparent.