[RE-wrenches] battery venting

[Roy Butler]

I agree with Michael. I would try to avoid pressurized battery boxes.

I also want to add that I have always followed the 360 degree limit for 
vent pipe bends.

I have also learned that even though the Zephyr vents can be replaced, 
most of them run so
quietly that most end users don't notice when they fail. Yes, that's 
another great argument
for regular inspections.

I have been using 3" vent pipe with a minimum 60 cfm, brushless, sealed 
motor vent fan,
mounted so that it pulls the gases from the box and up the pipe.


Roy Butler
NABCEP Certified Small Wind Installer®
NABCEP Certified Solar PV Installer®
NYSERDA eligible PV&  wind installer
Four Winds Renewable Energy, LLC
8902 Route 46
Arkport, NY 14807
607-324-9747

www.four-winds-energy.com

Although no trees were killed in the sending of this message,
a large number of electrons were terribly inconvenienced.




On 12/31/2011 6:20 PM, Michael Welch wrote:
> Exeltech wrote at 02:16 PM 12/31/2011:
>
>> 4) Install the vent fan on the fresh-air inlet side of the box.
> Not a recommended practice. This pressurizes the box, so that the gas can exit through any leaks into the room just as easily as up the vent. So instead, the fan should be an exhaust fan, pulling from the box, creating a slight vacuum. That way any leaks are into the box, not out of it.
>
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