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Posted by Speedy Jim on May 20, 2006, 10:44 pm
ameijers wrote:
> Just had a new high-efficency furnace installed in this pit. Looking around
> after work yesterday, noticed that the 2 vent pipes that come through the
> outside wall behind the A/C compressor are just naked PVC pipes, one
> sticking out about a foot, and the other about 18 inches, mebbe a foot
> apart. 2 questions:
> 1. Are they supposed to be this close together? Seems like the intake would
> suck up some of the outflow. I know this is just combustion air, but
> still...
> 2. If I was a bird or rodent, on a cold wet day, those pipes would look
> pretty cozy. Aren't these supposed to have screens/rain caps on them?
>
> I'm supposed to drop off the final check and pick up my key after work
> Monday. When I call up and holler at them first thing in the morning, what
> should I be saying is the proper technique? (I think the install crew had
> dates Friday night, and in the rush to pack up, just forgot to install the
> things.)
>
> aem sends...
>
You'd have to see the mfr specs. Maybe they left the install booklet.
One brand specs a min distance of 3" between pipe ends and a max
of 24".
Some mfr provide an inlet screen but, in general, the exh is left
completely open to avoid condensate freezing on any screen.
Jim
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