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Old 09-24-2013, 10:44 AM   #1
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PVC Exhaust pipe


Hi,

I have a condensing furnace unit with 2 3" pvc pipes on the exterior. My
exhaust pipe has a street 90 pointing up but no grille to prevent snow, rain or insects from getting in. Any suggestion on what I can use?

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Old 09-24-2013, 12:30 PM   #2
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U cannot put a grill on it or it will freezeup from the water vapor in the exhaust hitting it. Usually they use an open tee or elbow downwards so rain does not pour in. Post a pic of it/them.

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Old 09-24-2013, 12:57 PM   #3
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Quote:
Originally Posted by yuri View Post
U cannot put a grill on it or it will freezeup from the water vapor in the exhaust hitting it. Usually they use an open tee or elbow downwards so rain does not pour in. Post a pic of it/them.
So just a 3" tee fitting?
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Old 09-24-2013, 02:01 PM   #4
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post some pics. you need to follow the manufacturers specs/info but I have never seen it done that way.
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Old 09-24-2013, 09:40 PM   #5
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Quote:
Originally Posted by detroittigerfan View Post
Hi,

I have a condensing furnace unit with 2 3" pvc pipes on the exterior. My
exhaust pipe has a street 90 pointing up but no grille to prevent snow, rain or insects from getting in. Any suggestion on what I can use?
post a picture..should not be facing up...ben sr
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Old 09-24-2013, 09:44 PM   #6
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Just cut the end off, and put a street El (ie 45) facing somewhat down. My guess is that there is a window or vent within the three feet of that exhaust. It should have a slight slope all along the length, that at the end, the outlet is allowing any moisture to go back out of the end, not towards the furnace.

A nice picture far enough back, giving location of how this exits the building, which would also show any windows or vents at the foundation. We can Zoom in if needed for more detail, so no need to take a Macro shot four feet from the vent, or upload a picture that is 1500x1500.

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