Kirpal,
Neither the SQFlex pump nor its accessories are UL listed. That can
lead to some serious difficulties with the AHJ. Fortunately the pump
can operate without any of the accessories -- neither the IO101 nor the
CU200 is required. Murray, Siemens, Square D, and others make 250-Vdc
30-amp
C though but I think it was
> one of the engineers there who I discussed it with.
> Nathan Jones
> Power Source Solar
>
>
> --
> *From:* Allan Sindelar
> *To:* Kirpal Khalsa
> *Cc:* RE-wrenches
> *Sent:* Wed, April 6, 2011 6:28:35 PM
> *
; Sent: Wed, April 6, 2011 6:28:35 PM
> Subject: Re: [RE-wrenches] Grundfos SQ Flex
>
> Kirpal,
> I have never tried to feed 240V to an IO101, so I don't know the answer. But
> as the pump takes a maximum of only 950-1100 watts (approximate here, from
> memory). The usual rea
Subject:
Re: [RE-wrenches] Grundfos SQ Flex
Kirpal,
I have never tried to feed 240V to an IO101, so I don't know
the answer. But as the pump takes a maximum of only 950-1100
watts (approximate here, from memory). The u
delar
To: Kirpal Khalsa
Cc: RE-wrenches
Sent: Wed, April 6, 2011 6:28:35 PM
Subject: Re: [RE-wrenches] Grundfos SQ Flex
Kirpal,
I have never tried to feed 240V to an IO101, so I don't know the answer. But as
the pump takes a maximum of only 950-1100 watts (approximate here, from
memory).
Of Kirpal Khalsa
Sent: Wednesday, April 06, 2011 2:55 PM
To: RE-wrenches
Subject: [RE-wrenches] Grundfos SQ Flex
Hi
allso
Kirpal,
I have never tried to feed 240V to an IO101, so I don't know the
answer. But as the pump takes a maximum of only 950-1100 watts
(approximate here, from memory). The usual reason for adding an
IO101 is to allow a portable generator to back up a PV array during
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 <
al...@positiveenergysolar.com> wrote:
> Kirpal,
> I belie
ot ever believe anything, but seriously trust through action.
>
>
>
> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Kirpal Khalsa
> *Sent:* Wednesday, April 06, 2011 2:55 PM
> *To:* RE-wrenches
> *Subject:*
e-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of Kirpal Khalsa
Sent: Wednesday, April 06, 2011 2:55 PM
To: RE-wrenches
Subject: [RE-wrenches] Grundfos SQ Flex
Hi allso I have a pumping project using a grundfos SQ
Flex pumpIt will operate on the grid when grid is
present and then swit
mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of Roy Butler
Sent: Wednesday, April 06, 2011 3:07 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Grundfos SQ Flex
Kirpal,
Although I can't answer your IO101 question, I can tell you
that the SQ Flex operates nicely for us
when us
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 f
Kirpal,
I have several of these units operating with pressure tanks with no problems
there. Glad to see the pressure swich being used as disconnect. We have had
multiple installs where the CU200 command to stop pumping was ignored by the
pump and pressure relief protection saved the day. The DC
Kirpal,
Although I can't answer your IO101 question, I can tell you that the
SQ Flex operates nicely for us
when used with a pressure tank/ pressure switch. As long as the pump
and PV power source are
sized to accommodate the additional vertical lift caused by
Hi allso I have a pumping project using a grundfos SQ Flex pumpIt
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
hultze
> *Sent:* Monday, August 23, 2010 6:45 PM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] Grundfos SQ Flex Float Switch
>
>
>
> Hiya Kirpal,
>
> They are just signal wires from the CU200.
>
> Cheers, Bob-O
>
>
>
> On Aug 23, 2010, at 1:54 PM, Kir
g] On Behalf Of Bob-O
Schultze
Sent: Monday, August 23, 2010 6:45 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Grundfos SQ Flex Float Switch
Hiya Kirpal,
They are just signal wires from the CU200.
Cheers, Bob-O
On Aug 23, 2010, at 1:54 PM, Kirpal Khalsa wrote:
Hi All.I can't find it
Hiya Kirpal,
They are just signal wires from the CU200.
Cheers, Bob-O
On Aug 23, 2010, at 1:54 PM, Kirpal Khalsa wrote:
Hi All.I can't find it in any of the manuals for grundfos.does anyone
know if the wiring to the float switch carries current or not. The float
switch has 3 #14AWG wir
y way to definitively make
them
shut off is to use a standard pressure switch and break the circuit between
power source and the pump.
From: Kirpal Khalsa
To: RE-wrenches
Sent: Mon, August 23, 2010 3:54:15 PM
Subject: [RE-wrenches] Grundfos SQ Flex Float Switc
Kirpal,
If you use 18/2 shielded tray cable (with all the proper insulation
ratings of course) you can
run that for thousands of feet. 700' is about our average run on the
majority of our pump
systems and it works well for us.
My wire is by Omni, part
Hi All.I can't find it in any of the manuals for grundfos.does
anyone know if the wiring to the float switch carries current or not. The
float switch has 3 #14AWG wires...I need to add about 700 feet of wire
from the CU 200 controller to the storage tank.I want to use
#18AWG..i
Kirpal,
For the occasional odd high-current DC contactor, I like MDI. They made
the mercury displacement contactors used years ago in the Ananda/APT
Powercenters. Check out http://www.mdius.com/relays.php#High_Voltage to
see if they have anything you can use.
Allan
t: Re: [RE-wrenches] Grundfos SQ FLEX AC/DC auto switching
Hi Allthanks for the good feedback on this water pumping system. Many good
ideasIt looks like this is a system which can be done. I will be looking
for a relay that will have the necessary voltage characteristics which will
>
> Mark Dickson,
>
> NABCEP Certified Solar PV Installer ™
>
> Oasis Montana Inc.
>
>
> --
>
> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Allan Sindelar
>
: Monday, May 24, 2010 2:39 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Grundfos SQ FLEX AC/DC auto switching
Mark,
Your message gave me pause, as I just last week specified this setup, so I
checked into it with our Grundfos rep. He said he had never heard anything
recommending against the flex
Mark,
Your message gave me pause, as I just last week specified this setup,
so I checked into it with our Grundfos rep. He said he had never heard
anything recommending against the flex in a pressure system. He said
the SQF doesn't know the difference between 40 psi and 100' of head. At
the end
d Solar PV Installer T
Oasis Montana Inc.
_
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kent
Osterberg
Sent: Thursday, May 20, 2010 5:18 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Grundfos SQ FLEX AC/DC auto
Kirpal,
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.
Kent Osterberg
Blue Mountain Solar
Kirpal Khalsa wrote:
Hi Folks.I am working on putting together a domestic
water pumping system using
...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kirpal Khalsa
Sent: Thursday, May 20, 2010 12:28 PM
To: RE-wrenches
Subject: [RE-wrenches] Grundfos SQ FLEX AC/DC auto switching
Hi Folks.I am working on putting together a domestic water pumping system
usin
Could be as simple as installing a DC relay of appropriate coil voltage and
>>> contact configuration & ratings. Then, use the PV to power the relay and
>>> the contacts to select your preferred power source. The necessary
>>> hysteresis inherent in relays would be
resent. Select a relay for the
>> environment (enclosed is usually best), and wire it safely. This is just
>> one option - but it uses off-the-shelf parts and ought to be easy to
>> configure.
>>
>>
>> Dan
>>
>>
>>
>> --- On T
wer source. The necessary
> hysteresis inherent in relays would be present. Select a relay for the
> environment (enclosed is usually best), and wire it safely. This is just
> one option - but it uses off-the-shelf parts and ought to be easy to
> configure.
>
>
> Dan
>
>
Kirpal,
I did this about 5 years ago, on an array-direct irrigation pump with
the ability for the client to run a generator when needed. Yes, it's
all automatic, and no additional relay is needed. When the IO101 senses
AC it automatically closes a contactor - AC coil, NO is the AC, NC is
the PV
the environment
(enclosed is usually best), and wire it safely. This is just one option - but
it uses off-the-shelf parts and ought to be easy to configure.
Dan
--- On Thu, 5/20/10, Kirpal Khalsa wrote:
From: Kirpal Khalsa
Subject: [RE-wrenches] Grundfos SQ FLEX AC/DC auto switching
To:
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
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