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I, 2nd Allan's recommendation, or better, use sealed batteries,
since its battery backup, and so small. People are bad about
battery maintenance on anything but off grid. You definitely can't
afford to have hydrogen sulfide going up through the building.<br>
<br>
Ray Walters<br>
<br>
On 12/31/2011 8:12 AM, Allan Sindelar wrote:
<blockquote cite="mid:4EFF2664.6010103@positiveenergysolar.com"
type="cite">
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Jeff,<br>
I would use a Power Vent by Zephyr Industries. In addition to a
12V or 48V fan, his units have a built-in backdraft damper.
Negative building pressure under certain conditions would be a
concern of mine, so I wouldn't rely on angle to ensure exhaust
always travels up and out.<br>
Allan<br>
<br>
<div class="moz-signature">
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charset=ISO-8859-1">
<title></title>
<font face="Times New Roman, Times, serif"><b>Allan Sindelar</b></font><br>
<small><a moz-do-not-send="true"
href="mailto:Allan@positiveenergysolar.com"><font
color="#000099" face="Times New Roman, Times, serif"><u>Allan@positiveenergysolar.com</u></font></a></small><font
face="Times New Roman, Times, serif"><br>
<span style="font-size: 10pt;">NABCEP Certified Photovoltaic
Installer<br>
NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
<b>Positive Energy, Inc.</b><br>
3201 Calle Marie<br>
Santa Fe, New Mexico 87507<br>
<b>505 424-1112</b><br>
<a moz-do-not-send="true"
href="http://www.positiveenergysolar.com/" target="_blank"><u>www.positiveenergysolar.com</u></a><o:p></o:p></span></font>
<p class="MsoNormal" style="margin-right: 722.25pt;"><span
style="font-size: 10pt;"><font face="Times New Roman, Times,
serif"><st1:place w:st="on"><st1:city w:st="on"></st1:city><st1:state
w:st="on"></st1:state><st1:postalcode w:st="on"></st1:postalcode></st1:place></font><b
style=""><br>
</b></span></p>
<span style="font-size: 10pt;"><br>
</span> </div>
<br>
On 12/31/2011 7:59 AM, JRQ wrote:
<blockquote
cite="mid:1325343579.70837.YahooMailNeo@web39304.mail.mud.yahoo.com"
type="cite">
<div style="color: rgb(0, 0, 0); background-color: rgb(255, 255,
255); font-family: times new roman,new york,times,serif;
font-size: 12pt;">
<div><span><span class="Apple-style-span" style="color:
rgb(69, 69, 69); font-family:
Arial,Helvetica,sans-serif; font-size: 12px;">Wrenches,</span></span></div>
<div><span><span class="Apple-style-span" style="color:
rgb(69, 69, 69); font-family:
Arial,Helvetica,sans-serif; font-size: 12px;"><br>
</span></span></div>
<div><span><span class="Apple-style-span" style="color:
rgb(69, 69, 69); font-family:
Arial,Helvetica,sans-serif; font-size: 12px;">I'm
looking at a potential battery backup system wtih a 200
AH @48V flooded battery bank in the basement electrical
room of a 3 story building. There is a window in the
electrical room. The batteries will be located about 10'
from an outdoor wall. The building is all reinforced
concrete, so I can not run a vent pipe vertically from
the batteries. Does anyone have a rule of thumb for how
much the vent pipes can be angled from the batteries?
Would it be more lenient for short sections of pipe (say
<2') versus one long angled piece from the batteries?
My instinct would be to keep the pipe no more than 45˚
from plumb.</span></span></div>
<div><span><span class="Apple-style-span" style="color:
rgb(69, 69, 69); font-family:
Arial,Helvetica,sans-serif; font-size: 12px;"><br>
</span></span></div>
<div><span><span class="Apple-style-span" style="color:
rgb(69, 69, 69); font-family:
Arial,Helvetica,sans-serif; font-size: 12px;">Or with
bending the vent pipe: does anyone have a best-practice
rule for the sum of the angles of bends?</span></span></div>
<div><span><span class="Apple-style-span" style="color:
rgb(69, 69, 69); font-family:
Arial,Helvetica,sans-serif; font-size: 12px;"><br>
</span></span></div>
<div><span><span class="Apple-style-span" style="color:
rgb(69, 69, 69); font-family:
Arial,Helvetica,sans-serif; font-size: 12px;">Thanks,</span></span></div>
<div><span><span class="Apple-style-span" style="color:
rgb(69, 69, 69); font-family:
Arial,Helvetica,sans-serif; font-size: 12px;">Jeffrey
Quackenbush</span></span></div>
<div><span><span class="Apple-style-span" style="color:
rgb(69, 69, 69); font-family:
Arial,Helvetica,sans-serif; font-size: 12px;">NABCEP
Certified PV Installer</span></span></div>
<div><span><span class="Apple-style-span" style="color:
rgb(69, 69, 69); font-family:
Arial,Helvetica,sans-serif; font-size: 12px;">Peripatetic
Solar Technician</span></span></div>
<div><br>
</div>
<div style="font-size: 12pt; font-family: 'times new
roman','new york',times,serif;">
<div style="font-size: 12pt; font-family: 'times new
roman','new york',times,serif;"> <font face="Arial"
size="2">
<hr size="1"> <b><span style="font-weight: bold;">From:</span></b>
Drake <a moz-do-not-send="true"
class="moz-txt-link-rfc2396E"
href="mailto:drake.chamberlin@redwoodalliance.org"><drake.chamberlin@redwoodalliance.org></a><br>
<b><span style="font-weight: bold;">To:</span></b> <a
moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>
<br>
<b><span style="font-weight: bold;">Sent:</span></b>
Saturday, December 31, 2011 8:08 PM<br>
<b><span style="font-weight: bold;">Subject:</span></b>
[RE-wrenches] Pole Mount PVC<br>
</font> <br>
<div id="yiv727220883">
<div> Hello Wrenches,<br>
<br>
With pole mount systems, It looks cleaner and is safer
to run the PVC conduit down the pole into the
concrete, and use a 90 degree elbow to come out
through the side of the anchor underground. This way,
the pipe is protected from mechanical damage, and
there is nothing to trip over when adjusting the array
for seasonal tilt. <br>
<br>
I was told that some building departments will not
allow this. Has anyone had a problem with using this
method, either technical or legal? How do you like
to route your conduits?<br>
<br>
Thank you,<br>
<br>
Drake <br>
<div> <font size="2">Drake Chamberlin <br>
ATHENS ELECTRIC LLC<br>
OH License 44810 <br>
CO license 3773<br>
NABCEP Certified PV<br>
</font></div>
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