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Kirpal,<br>
<br>
None of the SQFlex equipment is UL listed. You may find that your AHJ
won't approve any of the SQFlex controls and possibly not even the pump.<br>
<br>
Kent Osterberg<br>
Blue Mountain Solar<br>
<br>
<br>
Kirpal Khalsa wrote:
<blockquote
cite="mid:AANLkTilBSkqdWtzz6Eq-sxr9c1cmJHSls10qMLR4Sxyy@mail.gmail.com"
type="cite">Hi Folks.....I am working on putting together a domestic
water pumping system using a grundfos 11 - SQF - 2. This system will
be connected to a standard pressure tank and cistern and have a solar
array providing primary power. However at night and on cloudy days we
would like the system to switch back over to AC power from the grid. I
know that the grundfos IO 101 switch box allows the pump to use an AC
source and when the AC source is removed it<u> automatically</u>
switches back to DC. What I am looking for is when the DC source
(solar) is not available it <u>automatically</u> switches over to AC
power (grid) ( the reverse of what the IO 101 switch does) and when
the DC becomes available again it again <u>automatically</u> switches
back to the DC power (solar).
<div>Has anyone done this? Any recommendations for configuring this
set up. We are looking to provide solar water pumping during the day
both when grid is present and when their is a power outage and AC
pumping at night or cloudy weather all without battery back up.</div>
<div>Thanks in advance for any advice.!</div>
<div>-- <br>
Sunny Regards,<br>
Kirpal Khalsa<br>
NABCEP Certified Solar PV Installer<br>
Renewable Energy Systems<br>
<a moz-do-not-send="true" href="http://www.oregonsolarworks.com">www.oregonsolarworks.com</a><br>
541-218-0201 m<br>
541-592-3958 o<br>
</div>
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