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<div class="moz-cite-prefix">I installed a Sunpower Power Guard
system (10 Kw) that was frameless and glued to a concrete coated
foam board mount. I believe they discontinued this, but the foam
board was UV rated due to the concrete, and interlocked at the
edges. The concrete acted as ballast, and then the edges were
secured with paving stone ballast too. The foam board only
attached to the module with something like 6"x 6" foam blocks that
held the modules about 2" above the rest of the concrete foam
board. Those blocks were every foot to 16" as I recall. I don't
know what adhesive was used, but I've used silicone before on
Tedlar backing with good long term results. <br>
<img style="margin-top: 170px;" id="irc_mi"
src="cid:part1.00060005.09050306@solarray.com" height="285"
width="410"><br>
My advice would be to let your customer play with the mounting
solution, etc. I wouldn't take responsibility beyond the wiring,
and I'm fairly liberal when it comes to interesting mounting
systems. Have you looked at some of the other frameless module
mounting systems like the Lumos?
<a class="moz-txt-link-freetext" href="http://www.lumossolar.com/solar-products/solar-racking/lsx-rail/">http://www.lumossolar.com/solar-products/solar-racking/lsx-rail/</a><br>
<pre class="moz-signature" cols="72">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760</pre>
On 5/30/2013 5:06 PM, <a class="moz-txt-link-abbreviated" href="mailto:toddcory@finestplanet.com">toddcory@finestplanet.com</a> wrote:<br>
</div>
<blockquote cite="mid:1369955205.777114452@webmail.finestplanet.com"
type="cite"><font face="arial" size="3">
<p style="margin:0;padding:0;">good point dan... i wonder how
frameless modules are intended to be mounted?</p>
<p style="margin:0;padding:0;"> </p>
<p style="margin:0;padding:0;">todd</p>
<p style="margin:0;padding:0;"> </p>
<p style="margin:0;padding:0;"> </p>
<p style="margin:0;padding:0;"> </p>
<p style="margin:0;padding:0;"> </p>
<p style="margin:0;padding:0;">On Thursday, May 30, 2013 4:00pm,
"Exeltech" <a class="moz-txt-link-rfc2396E" href="mailto:exeltech@yahoo.com"><exeltech@yahoo.com></a> said:<br>
<br>
</p>
<div id="SafeStyles1369955180">
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<td style="font: inherit;" valign="top">I agree with
Allen, and would like to add a related comment. Foam
boards are<br>
thermally insulative in nature. If affixed to the PV
with adhesive, they would<br>
cause the PV module to run hotter than if the
backsheet was fully exposed<br>
to the air.<br>
<br>
This results in reduced energy output under all
conditions, and increased<br>
thermal stresses on the PV cells, internal buss,
bonds, and other aspects<br>
of the PV.<br>
<br>
<br>
Dan<br>
<br>
<br>
--- On <strong>Thu, 5/30/13, Allan Sindelar <em><a class="moz-txt-link-rfc2396E" href="mailto:allan@positiveenergysolar.com"><allan@positiveenergysolar.com></a></em></strong>
wrote:<br>
<blockquote style="border-left: 2px solid #1010ff;
margin-left: 5px; padding-left: 5px;"><br>
From: Allan Sindelar
<a class="moz-txt-link-rfc2396E" href="mailto:allan@positiveenergysolar.com"><allan@positiveenergysolar.com></a><br>
Subject: Re: [RE-wrenches] used panel mount
questions<br>
To: "RE-wrenches"
<a class="moz-txt-link-rfc2396E" href="mailto:re-wrenches@lists.re-wrenches.org"><re-wrenches@lists.re-wrenches.org></a><br>
Date: Thursday, May 30, 2013, 5:46 PM<br>
<br>
<br>
<div id="yiv519615236">
<div>
<div class="yiv519615236moz-cite-prefix">Todd,<br>
I don't have your answers, only the caution
that "blue foam" to many of us with a
construction background means extruded
polystyrene or "blueboard", commonly used
around foundations. It deteriorates with
exposure to sunlight, so could only be used in
an application such as this if protected from
UV.<br>
Allan<br>
<br>
<div class="yiv519615236moz-signature"><span
style="font-family: 'Times New Roman',
Times, serif;"><strong>Allan Sindelar</strong></span><br>
<small><a moz-do-not-send="true"
rel="nofollow"
href="/mc/compose?to=Allan@positiveenergysolar.com"
target="_blank"><span style="color:
#000099; font-family: 'Times New
Roman', Times, serif;"><span
style="text-decoration: underline;">Allan@positiveenergysolar.com</span></span></a></small><span
style="font-family: '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>
Founder and Chief Technology Officer<br>
<strong>Positive Energy, Inc.</strong><br>
3209 Richards Lane (note new address)<br>
Santa Fe, New Mexico 87507<br>
<strong>505 424-1112</strong><br>
<a moz-do-not-send="true" rel="nofollow"
href="http://www.positiveenergysolar.com/" target="_blank"><span
style="text-decoration: underline;">www.positiveenergysolar.com</span></a></span></span>
<p class="yiv519615236MsoNormal"
style="margin:0;padding:0;margin-right:
722.25pt;"><span style="font-size: 10pt;"><span
style="font-family: 'Times New Roman',
Times, serif;"> </span><strong><br>
</strong></span></p>
<span style="font-size: 10pt;"><br>
</span></div>
On 5/30/2013 4:14 PM, Todd Cory wrote:</div>
<blockquote><span style="font-size: 8pt;"><span
style="font-family: Arial;">wrenches,<br>
<br>
i have a customer who purchased 20 used
astropower ap75 modules. they are
frameless and appear to have been
previously mounted using four, 2" wide X
10" long strips of blue rigid foam, glued
to the back of each module with some kind
of adhesive.<br>
<br>
two questions:<br>
<br>
this seems to be a reasonable mounting
system id like to repeat. would anyone
familiar with this kind of mounting
technique be willing to comment/speculate
on an adhesive that would not degrade the
tedlar backsheet? whatever was previously
used worked great.<br>
<br>
what kind of flat/smooth mounting surface
would folks suggest the other side of the
blue foam be attached to? the only thing i
can think of is plywood, but that would
rot over time.<br>
<br>
thanks,<br>
<br>
todd<br>
<br>
<br>
</span></span> <br>
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