[RE-wrenches] RE-wrenches Digest, Vol 4, Issue 404

[Isaac Opalinsky]

Al,



I think the issue of putting panels over an array is not simply "inadequate
ventilation", but also creating a situation where frost might be more
likely to form on the inside of the pipe.  The way I had it explained to
me, the UPC requires vents to go 10" above the roof line, and the Standard
Plumbing code also requires that the penetration through the roof be
upsized to minimize the impact of frost.  I've always worked with plumbers
to relocate the vents, which turned out to be easier and less expensive
once we had done a few projects together.  We used the Studor vents as
well, which are a simple solution but require a little more planning



I'd love to see if the vents make a hot spot on the panels - maybe they'd
help shed snow more quickly.



Isaac Opalinsky





Message: 1

Date: Thu, 15 Dec 2011 14:31:10 -0500

From: Allen Frishman <amfrish at aeonsolar.com>

To: re-wrenches at lists.re-wrenches.org

Subject: [RE-wrenches] Vent Pipes under an array?

Message-ID: <608DA4F3-6859-4447-BFCD-DE69E6D61086 at aeonsolar.com>

Content-Type: text/plain; charset="us-ascii"



Wrenchers,



My local JHA has recently decided that vents for anything other than fresh
air are not allowed under the solar array.   The ones that are causing me
the biggest problem are the plumbing vent pipes as I have several projects
with 10 or more pipes to deal with.  Has anyone successfully proven that it
is not a health problem to vent under the array since there is plenty of
airflow between panels and on all 4 sides of the array?  Other than
extending the pipes through the array by leaving out panels, are there any
other suggestions?



 My application is flat roofs with raised multiple row arrays (100+ solar
panels)





 All feedback is appreciated.





Al Frishman

AeonSolar



(917) 699-6641 - cell

(888) 460-2867

www.aeonsolar.com
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