[RE-wrenches] Grundfos SQ Flex

[Kirpal Khalsa]

Allan.....According to the IO101 literature it is rated at upto
265VAC......however in all its wiring "drawings" it only shows one hot, one
neutral and a ground!?? I am puzzled.....?
Kirpal

On Wed, Apr 6, 2011 at 2:23 PM, Allan Sindelar <
allan at positiveenergysolar.com> wrote:

>  Kirpal,
> I believe that the IO101 is only designed to accept 120VAC, not 240. The
> supplied AC pigtail is 15A 120V, and it uses a contactor, which would be a
> specific voltage only. Unless I'm mistaken, you don't want to supply 220
> (240) VAC.
>
> I don't have answers for your other questions.
> Allan
>
>  *Allan Sindelar*
> *Allan at positiveenergysolar.com* <Allan at positiveenergysolar.com>
> NABCEP Certified Photovoltaic Installer
> NABCEP Certified Technical Sales Professional
> New Mexico EE98J Journeyman Electrician
> *Positive Energy, Inc.*
> 3201 Calle Marie
> Santa Fe, New Mexico 87507
> *505 424-1112*
> *www.positiveenergysolar.com* <http://www.positiveenergysolar.com/>
>
> *
> *
>
>
> On 4/6/2011 2:55 PM, Kirpal Khalsa wrote:
>
> Hi all....so I have a pumping project using a grundfos SQ Flex pump....It
> will operate on the grid when grid is present and then switch back to solar
> ready if the grid power should fail.....here is the set up...
> 5-Sanyo HIT 220's Vmp non temp adjusted is 213VDC
> Pump is SQFlex 16 SQF-10 will have CU 200 controller and IO101 AC input
> box....
>
> System has a pressure tank and pressure switch which will be used instead
> of float switch as there is no storage tank at or above ground level....
> This system is a retrofit project to an existing well pumping system......
> Here is my questions:
> 1. Pump and CU 200 controller are rated for upto 300VDC but IO 101
> Controller is only rated for 225VDC.....is that open circuit or max power on
> the modules....
> 2. The Grundfos wiring diagrams only show 2 wires and a ground leaving the
> IO101 going to the CU200.....What is happening when there is 240VAC
> supplying the system and what happens when it switches back to DC how is the
> power transmitted on those wires?  What happens to the second leg of the
> 240VAC generator/grid input?
> 3. Has anyone done one of these Grundos SQFlex back up water pumping
> systems connected to a pressure tank and did it operate as expected?
> Grundfos does not offer tech support.......that is kind of a bummer....
> Thanks for any advice or help....
>
>
> --
> Sunny Regards,
> Kirpal Khalsa
> NABCEP Certified Solar PV Installer
> Renewable Energy Systems
> www.oregonsolarworks.com
> 541-218-0201 m
> 541-592-3958 o
>
>
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-- 
Sunny Regards,
Kirpal Khalsa
NABCEP Certified Solar PV Installer
Renewable Energy Systems
www.oregonsolarworks.com
541-218-0201 m
541-592-3958 o
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