Re: [RE-wrenches] grundfos SQFlex question

[Jay]

It’s too bad that Lorentz has come and gone a few times. 

I do like the architecture with the electronics all at the surface. And that 
the old ones had a easy manual speed control. 

The property has a sqflex in another well so I’ll just work on some options to 
get the flow as close as I can for
The customer. 

Thanks everyone for all the advice and info

Jay

> On Jun 16, 2021, at 4:51 AM, John Blittersdorf  
> wrote:
> 
> 
> Jay,
>Lorentz still has two people in texas. I can’t find an active dealer but 
> they do provide excellent tech support 24/7.  I have to buy from a dealer but 
> the ones that I have called only get one if specified on a new well they are 
> drilling. They didn’t know much about them.
> 
> John B
> 
>> On Tue, Jun 15, 2021 at 5:34 PM jay  wrote:
>> Does anyone have or know where I can get the pump curves with voltages?
>> 
>> I’m trying to limit flow by lowering the voltage, which I know works, but I 
>> can’t find the output vs voltage charts.
>> 
>> And does anyone know if Lorentz is still active in the USA?  
>> The last time i checked their controller had the ability for flow/speed 
>> adjustment.
>> 
>> Thanks
>> 
>> jay
>> 
>> peltz power
>> 
>> 
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Re: [RE-wrenches] grundfos SQFlex question

[John Blittersdorf]

Jay,
   Lorentz still has two people in texas. I can’t find an active dealer but
they do provide excellent tech support 24/7.  I have to buy from a dealer
but the ones that I have called only get one if specified on a new well
they are drilling. They didn’t know much about them.

John B

On Tue, Jun 15, 2021 at 5:34 PM jay  wrote:

> Does anyone have or know where I can get the pump curves with voltages?
>
> I’m trying to limit flow by lowering the voltage, which I know works, but
> I can’t find the output vs voltage charts.
>
> And does anyone know if Lorentz is still active in the USA?
> The last time i checked their controller had the ability for flow/speed
> adjustment.
>
> Thanks
>
> jay
>
> peltz power
>
>
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Re: [RE-wrenches] grundfos SQFlex question

[Nick A Lucchese]

This one?



> On Jun 15, 2021, at 2:15 PM, jay  wrote:
> 
> Does anyone have or know where I can get the pump curves with voltages?
> 
> I’m trying to limit flow by lowering the voltage, which I know works, but I 
> can’t find the output vs voltage charts.
> 
> And does anyone know if Lorentz is still active in the USA?  
> The last time i checked their controller had the ability for flow/speed 
> adjustment.
> 
> Thanks
> 
> jay
> 
> peltz power
> 
> 
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Re: [RE-wrenches] grundfos SQFlex question

[Kent]

Jay,

Running a Grundfos pump on low voltage also means running it on limited 
input power (the current can't/won't exceed a certain amount). It is 
easy to end up with a pump that won't operate all of the time, or only 
for a limited amount of hours every day. A pump that has a speed control 
is a better choice; it will operate more reliably and for more hours 
every day.


Lorentz pumps are still available in the U.S.  The new controller 
doesn't have the speed adjustment built in, but there is an option to 
order a speed adjustment for the controller. The speed can also be 
adjusted with a smart phone app.


I believe that your distributor for Lorentz Pumps is GenPro Energy 
Solutions.


Kent Osterberg

Blue Mountain Solar


On 6/15/2021 2:15 PM, jay wrote:

Does anyone have or know where I can get the pump curves with voltages?

I’m trying to limit flow by lowering the voltage, which I know works, but I 
can’t find the output vs voltage charts.

And does anyone know if Lorentz is still active in the USA?
The last time i checked their controller had the ability for flow/speed 
adjustment.

Thanks

jay

peltz power


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Re: [RE-wrenches] grundfos SQFlex question

[Jerry Shafer]

Grundfus used to have flow vs voltage charts per pump

On Tue, Jun 15, 2021, 3:34 PM jay  wrote:

> Does anyone have or know where I can get the pump curves with voltages?
>
> I’m trying to limit flow by lowering the voltage, which I know works, but
> I can’t find the output vs voltage charts.
>
> And does anyone know if Lorentz is still active in the USA?
> The last time i checked their controller had the ability for flow/speed
> adjustment.
>
> Thanks
>
> jay
>
> peltz power
>
>
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Re: [RE-wrenches] grundfos SQFlex question

[Dave Angelini Offgrid Solar]

I have been using this one for too many years. You need more than this
Jay?
https://www.pumpsok.com/sites/pumpsok/uploads/documents/water_systems/flexnew.pdf

My dealer stopped selling Lornetz and not sure why?

Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail offgridso...@sti.net
text 209 813 0060

On Tue, 15 Jun 2021 15:15:54 -0600, jay  wrote:
> Does anyone have or know where I can get the pump curves with voltages?
> 
> I’m trying to limit flow by lowering the voltage, which I know works,
but
> I can’t find the output vs voltage charts.
> 
> And does anyone know if Lorentz is still active in the USA?  
> The last time i checked their controller had the ability for flow/speed
> adjustment.
> 
> Thanks
> 
> jay
> 
> peltz power
> 
> 
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[RE-wrenches] grundfos SQFlex question

[jay]

Does anyone have or know where I can get the pump curves with voltages?

I’m trying to limit flow by lowering the voltage, which I know works, but I 
can’t find the output vs voltage charts.

And does anyone know if Lorentz is still active in the USA?  
The last time i checked their controller had the ability for flow/speed 
adjustment.

Thanks

jay

peltz power


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Re: [RE-wrenches] grundfos SQFlex

[Kevin Pegg]

We usually use timer relays so that the pump will only run x minutes out of the 
hr, timed so that the well has sufficient time to recharge between pump runs. 

Wouldn't artificially increasing the pressure by a restriction valve cause the 
pump to use more energy? I have never tried that that was suggested in other 
comments. 

Kevin

-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of jay
Sent: June-30-16 5:43 PM
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Subject: [RE-wrenches] grundfos SQFlex

Hi All,

Any trick methods to keep a SQflex running on AC power at a given flow rate 
that is less than full power?

I’ve got a well that is just on 1 gpm, around 150’ lift.

the sqflex 3-2 will do it, but at 3gpm with full watts, an amazing 265 watts.


thx

jay

peltz power
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Re: [RE-wrenches] Grundfos SQflex

[Jason Andrade]

I have this same situation with my off grid well, I have a grundfos sqf5-2
and the yield wound up being .25 gpm.  Originally I ran it on 2- Astronergy
235 and made a timing system using a sprinkler timer and a midnite kid
controller it was tough to control the production as the power varied and
was limited to daylight hours.  I ran ac power to the control box and now
use a simple AC wall (pump draw is 400 watts) timer that up to seven daily
cycles and control the pump times calculated on the recapture rate of the
well which varies with the water table.  I also use inline water gauges to
help determine the amount of water I can pump per cycle because the amount
drops so much in the summer.  I went with the controlled time method over
restriction as it was going to have to be extreme in my situation, there is
a product out there I read about the dole valve that can regulate the
production to 1GPM http://www.pumpsandwells.com/mm5/PDFs/Dole%20Valves.pdf
without messing with the power directly.

   

  Jason Andrade
C-46# 974647
   (530) 410-4745 Cell
 Please follow the links
below for great content!


> On Jun 30, 2016, at 7:43 PM, jay  wrote:
> 
> Hi All,
> 
> Any trick methods to keep a SQflex running on AC power at a given flow
rate that is less than full power?
> 
> I?ve got a well that is just on 1 gpm, around 150? lift.
> 
> the sqflex 3-2 will do it, but at 3gpm with full watts, an amazing 265
watts.
> 
> 
> thx
> 
> jay
> 
> peltz power



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Re: [RE-wrenches] grundfos SQFlex

[Mac Lewis]

Could you use real slow pulse width modulation to do what you want?  Are
you trying to limit energy, power or volume delivered?  If you've got the
Cu 200, you could put a timer on the float switch contacts that cycle it on
and off.

On Fri, Jul 1, 2016 at 6:14 PM, Maverick Brown 
wrote:

> Jay,
>
> Will a Variac work in this situation?
>
>
> Thank you,
>
> Maverick
>
>
> > On Jun 30, 2016, at 7:43 PM, jay  wrote:
> >
> > Hi All,
> >
> > Any trick methods to keep a SQflex running on AC power at a given flow
> rate that is less than full power?
> >
> > I’ve got a well that is just on 1 gpm, around 150’ lift.
> >
> > the sqflex 3-2 will do it, but at 3gpm with full watts, an amazing 265
> watts.
> >
> >
> > thx
> >
> > jay
> >
> > peltz power
> > ___
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-- 



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*"Yo solo sé que no sé nada." -Sócrates*
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Re: [RE-wrenches] grundfos SQFlex

[Maverick Brown]

Jay,

Will a Variac work in this situation?


Thank you,

Maverick


> On Jun 30, 2016, at 7:43 PM, jay  wrote:
> 
> Hi All,
> 
> Any trick methods to keep a SQflex running on AC power at a given flow rate 
> that is less than full power?
> 
> I’ve got a well that is just on 1 gpm, around 150’ lift.
> 
> the sqflex 3-2 will do it, but at 3gpm with full watts, an amazing 265 watts.
> 
> 
> thx
> 
> jay
> 
> peltz power
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Re: [RE-wrenches] grundfos SQFlex

[Chris Schaefer]

I'd suggest a valve restrictor or perhaps a ball valve that you can adjust
over time till you achieve your correct flow rate while making sure your
well is able to recover.

Christopher

On Thu, Jun 30, 2016 at 8:43 PM, jay  wrote:

> Hi All,
>
> Any trick methods to keep a SQflex running on AC power at a given flow
> rate that is less than full power?
>
> I’ve got a well that is just on 1 gpm, around 150’ lift.
>
> the sqflex 3-2 will do it, but at 3gpm with full watts, an amazing 265
> watts.
>
>
> thx
>
> jay
>
> peltz power
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-- 

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*Tel/Fax 585-229-2083 or Cell 585-748-1870 *
*5115 South Hill Road ~ Canandaigua New York 14424**www.solarandwindfx.com
 ~ E-mail: ch...@solarandwindfx.com
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Re: [RE-wrenches] grundfos SQFlex

[jerrysgarage01]

Wrenches
Make an artificial head by a valve to reduce flow on the outlet side, it might 
increase watt demand. They will voltage compensate so reducing volts will not 
do it. I have to ask why thats a problem anyway, the pump will turn off if the 
level gets to low anyway.
Jerry


Sent via the Samsung Galaxy S™ III, an AT 4G LTE smartphone

 Original message From: jay 
<jay.pe...@gmail.com> Date:06/30/2016  2:43 PM  (GMT-10:00) 
To: RE-wrenches <re-wrenches@lists.re-wrenches.org> 
Subject: [RE-wrenches] grundfos SQFlex 
Hi All,

Any trick methods to keep a SQflex running on AC power at a given flow rate 
that is less than full power?

I’ve got a well that is just on 1 gpm, around 150’ lift.

the sqflex 3-2 will do it, but at 3gpm with full watts, an amazing 265 watts.


thx

jay

peltz power
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[RE-wrenches] grundfos SQFlex

[jay]

Hi All,

Any trick methods to keep a SQflex running on AC power at a given flow rate 
that is less than full power?

I’ve got a well that is just on 1 gpm, around 150’ lift.

the sqflex 3-2 will do it, but at 3gpm with full watts, an amazing 265 watts.


thx

jay

peltz power
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[RE-wrenches] Grundfos SQFlex

[Ron @ earthRight Solar]

Hello water pumping Wrenches, I have a customer who has a Grundfos SQFlex 11 
pump and he is getting connected to the grid. He will still have his battery 
back up charged by PV and wants to look at the most efficient way to operate 
the pump. It seems to me that neither the IO101 or the CU200 really is needed 
and he could just wire directly to the inverter output at 240v via a pressure 
switch on a standard pressure tank for most efficient operation. Although this 
doesn’t give any access to the Grundfos built in diagnostics that display on 
the CU200. 

Would you recommend keeping a CU200 in the system or is it overkill? With the 
CU200 the max voltage is 120 whereas without it I can go with 240v and a more 
efficient operation… unless I am missing something.

Ron Young
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Re: [RE-wrenches] Grundfos SQFlex

[jay peltz]

Hi Ron

Where did you read that the CU 200 is only good for 120vac. The manual I see 
shows 240vac 50/60hz?

Jay 
Peltz power. 




 On Oct 20, 2014, at 6:21 PM, Ron @ earthRight Solar 
 solarea...@solareagle.com wrote:
 
 Hello water pumping Wrenches, I have a customer who has a Grundfos SQFlex 11 
 pump and he is getting connected to the grid. He will still have his battery 
 back up charged by PV and wants to look at the most efficient way to operate 
 the pump. It seems to me that neither the IO101 or the CU200 really is needed 
 and he could just wire directly to the inverter output at 240v via a pressure 
 switch on a standard pressure tank for most efficient operation. Although 
 this doesn’t give any access to the Grundfos built in diagnostics that 
 display on the CU200. 
 
 Would you recommend keeping a CU200 in the system or is it overkill? With the 
 CU200 the max voltage is 120 whereas without it I can go with 240v and a more 
 efficient operation… unless I am missing something.
 
 Ron Young
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Re: [RE-wrenches] Grundfos SQFlex

[Brian Teitelbaum]

Hi Ron,

What you describe with using a pressure switch and pressure tank, and just
running the pump with 240 VAC, is fine. You don't need the CU-200 to do
any of that, if all you are doing is switching AC. The diagnostics is
nice, but probably not worth the cost in this kind of simple setup.

One issue though. The SQFlex pumps are not exactly instant-on. There is a
slight delay between when power is applied and the pump starts. Just make
sure that you use a large enough pressure tank to keep the pressure from
dropping too far before the pump starts filling it. You may have to raise
the starting pressure on the switch a little above where you set the
minimum pressure, to let it fall some at startup.

When it becomes time to replace the pump (hopefully many years from now),
I would just go with a Grundfos SQ straight AC pump instead of the Flex
model. If you are not going to be using a PV-direct arrangement, there is
not much advantage in using the Flex pumps.

Brian Teitelbaum
AEE solar



-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of Ron @ earthRight Solar
Sent: Monday, October 20, 2014 6:21 PM
To: RE-wrenches
Subject: [RE-wrenches] Grundfos SQFlex

Hello water pumping Wrenches, I have a customer who has a Grundfos SQFlex
11 pump and he is getting connected to the grid. He will still have his
battery back up charged by PV and wants to look at the most efficient way
to operate the pump. It seems to me that neither the IO101 or the CU200
really is needed and he could just wire directly to the inverter output at
240v via a pressure switch on a standard pressure tank for most efficient
operation. Although this doesn't give any access to the Grundfos built in
diagnostics that display on the CU200.

Would you recommend keeping a CU200 in the system or is it overkill? With
the CU200 the max voltage is 120 whereas without it I can go with 240v and
a more efficient operation. unless I am missing something.

Ron Young
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Re: [RE-wrenches] Grundfos SQFlex

[William Miller]

Friends:

The IO101 will accept only 120 VAC into the auxiliary port.  This is the 
connector with the threads on the bottom of the unit.  It has a label 
indicating 120 VAC.  This will cause some confusion. The CU200 will accept 240 
VAC and it will allow you to use a float switch.  

The IO101 will not allow a float switch and there are some idiosyncrasies as to 
how it switches from solar to AC and back (or not).

William



Lic 773985
millersolar.com
805-438-5600


-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of jay peltz
Sent: Monday, October 20, 2014 6:37 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Grundfos SQFlex

Hi Ron

Where did you read that the CU 200 is only good for 120vac. The manual I see 
shows 240vac 50/60hz?

Jay 
Peltz power. 




 On Oct 20, 2014, at 6:21 PM, Ron @ earthRight Solar 
 solarea...@solareagle.com wrote:
 
 Hello water pumping Wrenches, I have a customer who has a Grundfos SQFlex 11 
 pump and he is getting connected to the grid. He will still have his battery 
 back up charged by PV and wants to look at the most efficient way to operate 
 the pump. It seems to me that neither the IO101 or the CU200 really is needed 
 and he could just wire directly to the inverter output at 240v via a pressure 
 switch on a standard pressure tank for most efficient operation. Although 
 this doesn’t give any access to the Grundfos built in diagnostics that 
 display on the CU200. 
 
 Would you recommend keeping a CU200 in the system or is it overkill? With the 
 CU200 the max voltage is 120 whereas without it I can go with 240v and a more 
 efficient operation… unless I am missing something.
 
 Ron Young
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Re: [RE-wrenches] Grundfos SQFlex

[Brian Teitelbaum]

Hi Jay,

You are correct about the CU-200. It has an operating voltage range of
30-300 VDC and 90-240 VAC.

However, the IO-101 transfer switch is another story, and I think that is
what Ron meant. Up until recently Grundfos was only importing the 120 VAC
version of the IO-101, but now you can get the 240 VAC version here also
(it's basically the European 230 VAC model).

One thing to note though with the IO-101 is that its max DC voltage is only
225 VDC (even though the pumps and CU-200 are good for 300 VDC), so make
sure the PV array it's connected to is below that.

Brian
AEE Solar

-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of jay peltz
Sent: Monday, October 20, 2014 6:37 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Grundfos SQFlex

Hi Ron

Where did you read that the CU 200 is only good for 120vac. The manual I see
shows 240vac 50/60hz?

Jay
Peltz power.




 On Oct 20, 2014, at 6:21 PM, Ron @ earthRight Solar
 solarea...@solareagle.com wrote:

 Hello water pumping Wrenches, I have a customer who has a Grundfos SQFlex
 11 pump and he is getting connected to the grid. He will still have his
 battery back up charged by PV and wants to look at the most efficient way
 to operate the pump. It seems to me that neither the IO101 or the CU200
 really is needed and he could just wire directly to the inverter output at
 240v via a pressure switch on a standard pressure tank for most efficient
 operation. Although this doesn’t give any access to the Grundfos built in
 diagnostics that display on the CU200.

 Would you recommend keeping a CU200 in the system or is it overkill? With
 the CU200 the max voltage is 120 whereas without it I can go with 240v and
 a more efficient operation… unless I am missing something.

 Ron Young
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Re: [RE-wrenches] Grundfos SQFlex

[Allan Sindelar]

Ron, 
Brian's advice is sound. 

240 vac is fine for the pump and the CU 200. The SQ series is rated 90-300 v AC 
and 30-300 v DC, although the pump is happiest at around 90 v and up.  If the 
CU200 is already in the system and paid for, keep it: the diagnostics are nice, 
and the signal circuit is nicer: without it you must independently control the 
AC input. 
Allan Sindelar
a...@sindelarsolar.com

 On Oct 20, 2014, at 8:34 PM, Brian Teitelbaum bteitelb...@aeesolar.com 
 wrote:
 
 Hi Jay,
 
 You are correct about the CU-200. It has an operating voltage range of
 30-300 VDC and 90-240 VAC.
 
 However, the IO-101 transfer switch is another story, and I think that is
 what Ron meant. Up until recently Grundfos was only importing the 120 VAC
 version of the IO-101, but now you can get the 240 VAC version here also
 (it's basically the European 230 VAC model).
 
 One thing to note though with the IO-101 is that its max DC voltage is only
 225 VDC (even though the pumps and CU-200 are good for 300 VDC), so make
 sure the PV array it's connected to is below that.
 
 Brian
 AEE Solar
 
 -Original Message-
 From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
 Behalf Of jay peltz
 Sent: Monday, October 20, 2014 6:37 PM
 To: RE-wrenches
 Subject: Re: [RE-wrenches] Grundfos SQFlex
 
 Hi Ron
 
 Where did you read that the CU 200 is only good for 120vac. The manual I see
 shows 240vac 50/60hz?
 
 Jay
 Peltz power.
 
 
 
 
 On Oct 20, 2014, at 6:21 PM, Ron @ earthRight Solar
 solarea...@solareagle.com wrote:
 
 Hello water pumping Wrenches, I have a customer who has a Grundfos SQFlex
 11 pump and he is getting connected to the grid. He will still have his
 battery back up charged by PV and wants to look at the most efficient way
 to operate the pump. It seems to me that neither the IO101 or the CU200
 really is needed and he could just wire directly to the inverter output at
 240v via a pressure switch on a standard pressure tank for most efficient
 operation. Although this doesn’t give any access to the Grundfos built in
 diagnostics that display on the CU200.
 
 Would you recommend keeping a CU200 in the system or is it overkill? With
 the CU200 the max voltage is 120 whereas without it I can go with 240v and
 a more efficient operation… unless I am missing something.
 
 Ron Young
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Re: [RE-wrenches] Grundfos SQFlex

[toddcory]

If you are not going to be using a PV-direct arrangement, there is  not much 
advantage in using the Flex pumps.

 

except efficiency. i have two wells at home and the grundfos sqflex pumps 50' 
of additional head at the same flow rate, using 30% less energy as compared to 
the standard, 3/4 hp pump down the other hole..
 
and yes, the cu200's label says up to 240 vac is fine. 
as long as he has it, why not run the power through it?
 
todd
 
 



On Monday, October 20, 2014 7:24pm, Brian Teitelbaum 
bteitelb...@aeesolar.com said:



 Hi Ron,
 
 What you describe with using a pressure switch and pressure tank, and just
 running the pump with 240 VAC, is fine. You don't need the CU-200 to do
 any of that, if all you are doing is switching AC. The diagnostics is
 nice, but probably not worth the cost in this kind of simple setup.
 
 One issue though. The SQFlex pumps are not exactly instant-on. There is a
 slight delay between when power is applied and the pump starts. Just make
 sure that you use a large enough pressure tank to keep the pressure from
 dropping too far before the pump starts filling it. You may have to raise
 the starting pressure on the switch a little above where you set the
 minimum pressure, to let it fall some at startup.
 
 When it becomes time to replace the pump (hopefully many years from now),
 I would just go with a Grundfos SQ straight AC pump instead of the Flex
 model. If you are not going to be using a PV-direct arrangement, there is
 not much advantage in using the Flex pumps.
 
 Brian Teitelbaum
 AEE solar



Sent from Finest Planet WebMail.
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Re: [RE-wrenches] Grundfos SQFlex

[Ron Young]

Awesome responses thank you! And yes I did mix up the IO-101 operating voltage 
with the CU200. 

So because efficiency is important we’ll keep the CU200 in the system. 

Client wants a large pressure tank because of garden irrigation so we're 
looking at an 86 gallon model so pump will not cycle as frequently and pump 
efficiency will optimize with longer running times. Aside from bulk and weight 
problems of the tank I don’t foresee any other issues. Appreciate comments if 
otherwise.

Ron Young

On Oct 20, 2014, at 7:55 PM, toddc...@finestplanet.com wrote:

 If you are not going to be using a PV-direct arrangement, there is  not much 
 advantage in using the Flex pumps.
  
 
 except efficiency. i have two wells at home and the grundfos sqflex pumps 50' 
 of additional head at the same flow rate, using 30% less energy as compared 
 to the standard, 3/4 hp pump down the other hole..
  
 and yes, the cu200's label says up to 240 vac is fine.
 as long as he has it, why not run the power through it?
  
 todd
  
  
 
 
 On Monday, October 20, 2014 7:24pm, Brian Teitelbaum 
 bteitelb...@aeesolar.com said:
 
  Hi Ron,
  
  What you describe with using a pressure switch and pressure tank, and just
  running the pump with 240 VAC, is fine. You don't need the CU-200 to do
  any of that, if all you are doing is switching AC. The diagnostics is
  nice, but probably not worth the cost in this kind of simple setup.
  
  One issue though. The SQFlex pumps are not exactly instant-on. There is a
  slight delay between when power is applied and the pump starts. Just make
  sure that you use a large enough pressure tank to keep the pressure from
  dropping too far before the pump starts filling it. You may have to raise
  the starting pressure on the switch a little above where you set the
  minimum pressure, to let it fall some at startup.
  
  When it becomes time to replace the pump (hopefully many years from now),
  I would just go with a Grundfos SQ straight AC pump instead of the Flex
  model. If you are not going to be using a PV-direct arrangement, there is
  not much advantage in using the Flex pumps.
  
  Brian Teitelbaum
  AEE solar
 
 
 
 
 Sent from Finest Planet WebMail.
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