Question on exterior PVC vent termination.

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Old 10-12-19, 10:16 AM
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Question on exterior PVC vent termination.

I'm installing a Goodman 92% efficiency furnace. I plan to terminate the PVC intake and vent as in the photo below. My only concern is with rain water entering the combustion air vent. Any water that enters that pipe will just run to the furnace and drip inside the furnace housing. Is there any way to prevent that? Am I allowed to add another 90 or 45 fitting so the intake is pointed down, as long as I maintain a 12 inch distance from the exhaust pipe?
 
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Old 10-12-19, 10:38 AM
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I would set it up just as shown. I've never seen rain go into the exhaust port.
That 12" over highest expected snow amount is important for the intake.
 
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Old 10-12-19, 11:01 AM
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My apologies. I was thinking backwards. I was thinking the lower one pointing to the ground was the vent and the higher one was the intake.

Don't worry, I do have a HVAC guy who will be checking my work and doing the initial fire up. He'll be setting the gas pressure, checking temp rise, etc.
 
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