Re: [RE-wrenches] Murphy Gen Control Oopsies

[Chris Mason]

Silly question, but have you talked to the manufacturer?
http://www.fwmurphy.com/
I can't see how it would be an off-grid issue. The voltage on the solenoids
can only be 12V, so it's not an overvoltage issue.
If the controllers were faulty in the way you detail, that would be
happening with every genset, regardless of use.
Also, you should be able to track the operation to see if the pull-in coil
is remaining energized.
It could be that they are specifying lousy solenoids, can you spec a
different manufacturer?

On Sun, Aug 12, 2012 at 7:19 PM,  wrote:

>
>
> Anyone else having issues with Murphy Controls and Off Grid Systems? I
> have two installs w/ GPP Isuzu diesels on Mecca Alti Gen sets built by Mack
> Boring and Parts as primary power units. one is a 12K unit, the other a 20.
> both use Murphy controls, and both are toasting their fuel solenoid at
> random. the smaller one (Customer purchased/ we installed to back up an OB
> 7224 system). it's been in for a few years, but spits it's fuel solenoid
> twice a year like clock work (the first two times it took out the starter
> as well.. we think something caused the starter to suck in while running
> ). the second one (the 20K), has only been in since last fall and just spit
> the same solenoid for the first time. this one is backing up an OB14,400
> system. Both use make or break (dry) contact for gen run, and both use OB
> AGS from the Master. Since Sandy left Mack Boring I can't seem to get a
> straight answer from anyone.. (other than they're very sorry, the gensets
> are out of warranty). I can almost see messing up one somehow.. but both?
> apparently the solenoids use two coils -- one to suck in, the other to
> hold. Sandy was thinking something was causing the suck in coil to overwork
> which made the thing over heat and  fail.  I have dozens of other off grid
> systems with generator back up of one flavor or other and have never seen
> this kind of problem with any of them. I'm stumped. Suggestions? Thanks db
>
> Dan Brown
> Foxfire Energy Corp.
> Renewable Energy Systems
> (802)-483-2564
> www.Foxfire-Energy.com
> NABCEP #092907-44
>
>
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-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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Re: [RE-wrenches] Enphase M210-84-208-S12 Inverters Available?

[Dave Click]

Enphase already positive-grounds the module:

http://enphase.com/support/installation-wiring/
Q: The Enphase Microinverter manual states that the device is positively 
grounded. Don't most PV modules have negative grounds? Is this a problem 
for Enphase?
A: Enphase made the decision to positively ground its microinverters to 
minimize corrosion. Because Enphase Microinverters are positively 
grounded, they are compatible with both positively and negatively 
grounded modules.


On 2012/8/12 13:29, JRQ wrote:

Louis,

Can Enphase inverters be positively grounded? I wasn't aware that they
could. Otherwise you have an equipment mismatch problem that can't be
overcome under the listing of the modules and the inverters.

Jeffrey Quackenbush.




*From:* Louis Woofenden 
*To:* RE-wrenches 
*Sent:* Tuesday, August 7, 2012 2:54 PM
*Subject:* [RE-wrenches] Enphase M210-84-208-S12 Inverters Available?


Hi Wrenches,

I'm trying to piece together an SunPower/Enphase job, and looking for up
to 25 Enphase M210-84-208-S12 inverters, which have been discontinued by
Enphase.

If you happen to have any available (or know someone who does), can you
please contact me off-list at lo...@netzerosolar.net
, or 520-237-5040?

Thanks,

Louis Woofenden

Net Zero Solar, LLC
Tucson, AZ

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Re: [RE-wrenches] Thermal storage water stabilizer

[Will White]

Nathan,

We've done a couple of systems with large unpressurized tanks (STSS).  They 
work well but there are a couple of things you need to pay attention to.  We 
use tap water to fill the tank which works fine but you have to make sure the 
PH of the water is in the correct range.  I can't remember what that is off 
hand but the STSS manual has a whole section on correct PH and want to add (I 
think it's baking soda) to correct the PH.  The second tip is make sure all the 
ports and the lid are properly sealed with calk.  The STSS tanks come with the 
calk, I'm not sure if other brands include it.  If you don't seal all the 
openings well when the tank heats up and produces condensation that water will 
leak out the ports and create a mess and reduce the efficiency of the 
insulation.

We used to make our own heat exchangers with K soft copper and trex to hold it 
all together.  That worked well on most systems but we had one where the copper 
eroded where it was in contact with the trex.   We think it was due to improper 
PH of the water in the tank. I'd recommend buying the heat exchangers from the 
manufacture.

Good luck,
Will

__
Will White
Regional Field Operations Manager - New England

Real Goods Solar
64 Main St.
Montpelier, VT 05602
Tel: (802) 223-7804
Cell: (802) 234-3167
www.realgoodssolar.com

[Description: 
RGS12_Q2_MYTH_static_signature_1b]



From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Nathan Stumpff
Sent: Friday, August 10, 2012 3:03 PM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] Thermal storage water stabilizer

Thermal wrenches,

I have a series of upcoming projects involving large (up to 10,000 gallon) 
water storage. They are closed (air-tight) but unpressurized (oversized 
expansion capability) systems, basically just a mass of water. We move heat in 
(solar, masonry heater) and out (DHW, space heating) exclusively via heat 
exchangers, so once we seal up the lid there is no introduction of any new 
material, including air, until bladder replacement or other maintenance, 
hopefully a long time off.

Obviously de-ionized water would be the best choice for initial fill, but it is 
not going to happen. My thought is that with no new source of oxygen, minerals, 
etc., the small amounts that will be present on fill up can't pose a big 
problem.

Anyone with experience here? Any ideas or leads for a stabilizer to add on 
initial fill? What problems am I not seeing?

Many thanks,
-Nathan

--
Nathan J. Stumpff - Arctic Sun, LLC
NABCEP Certified PV Installer #091209-175
NABCEP Certified Solar Heating Installer #032412-14
nat...@arcticsun-llc.com
Office: 907/457-1297
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Re: [RE-wrenches] Thermal storage water stabilizer

[Jeremy Rodriguez- All Solar Inc.]

I've wondered about this as well with our unpressurized drainback systems. My 
HVAC supplier had told me that once you heat the water above 165 or so, that 
you basically have distilled it. Not sure. I thought you would need to boil it. 
Though we have had no issues with corrosion as we have had  some tanks in the 
field for years. 
Jeremy Rodriguez
All Solar
Sent via BlackBerry. Sorry for typos and shorthand!

-Original Message-
From: Will White 
Sender: re-wrenches-boun...@lists.re-wrenches.orgDate: Mon, 13 Aug 2012 
12:29:22 
To: RE-wrenches
Reply-To: RE-wrenches 
Subject: Re: [RE-wrenches] Thermal storage water stabilizer

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Re: [RE-wrenches] Unirac SolarMount rail caps

[Mark Richardson]

We had to find end caps for a ground mount that was used as part of an 
environmental learning center.
I was able to get vinyl end caps that worked online from caplugs 
(http://www.caplugs.com/).
A little silicone to seal the deal...

[Description: Description: Description: NYLElogo]
Mark Richardson
mrichard...@newyorklightenergy.com

From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of 
hol...@sbcglobal.net
Sent: Saturday, August 11, 2012 10:05 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Unirac SolarMount rail caps

just throwing this outaluminum angle attached to ends -  run between rail 
ends (each pair)? aluminum flat bar? closes ends and gives a trimmed look? 
Maybe use 24 or 22ga stainless than can be bent to form an angle? ask client to 
cover material cost as that is "custom" work beyond typical scope of build.
Holt E. Kelly
Holtek Fireplace & Solar Products
500 Jewell Dr.
Waco TX. 76712
254-751-9111
www.holteksolar.com
- Original Message -
From: Maverick Brown [Maverick Solar]
To: 'RE-wrenches'
Sent: Friday, August 10, 2012 6:56 PM
Subject: Re: [RE-wrenches] Unirac SolarMount rail caps

For the Bee's sake, just pump some grey silicone caulk into the ends and scrape 
flat.  ??

From: 
re-wrenches-boun...@lists.re-wrenches.org
 
[mailto:re-wrenches-boun...@lists.re-wrenches.org]
 On Behalf Of Dana Brandt
Sent: Friday, August 10, 2012 3:12 PM
To: RE-wrenches
Subject: [RE-wrenches] Unirac SolarMount rail caps

We just finished installing a system on SolarMount and the client is unhappy 
with how the ends of the SolarMount rail look. She says it looks unfinished and 
is concerned about bees nesting in them. I know there are other rail products 
with more finished looking ends but this system is already fully installed. 
Unirac has endcaps for the SunFrame, but those aren't compatible with 
SolarMount. Anyone run into this before? Thoughts on solutions?

Thanks,

Dana

Dana Brandt
Ecotech Energy Systems, LLC
www.ecotechenergy.com
d...@ecotechenergy.com
360.318.7646

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Re: [RE-wrenches] Thermal storage water stabilizer

[matt]

We have used Seltrol 112 as an inhibitor in large unpressurized drainback
systems based on a recommendation from Holocene.

I have previously worked on large unpressurized systems from other
installers and not seen any issues with their tap water-only systems
(though I have seen multiple issues with tank corrosion due to incorrect
tank material specification).

Matt


> Nathan,
>
> We've done a couple of systems with large unpressurized tanks (STSS).
> They work well but there are a couple of things you need to pay attention
> to.  We use tap water to fill the tank which works fine but you have to
> make sure the PH of the water is in the correct range.  I can't remember
> what that is off hand but the STSS manual has a whole section on correct
> PH and want to add (I think it's baking soda) to correct the PH.  The
> second tip is make sure all the ports and the lid are properly sealed with
> calk.  The STSS tanks come with the calk, I'm not sure if other brands
> include it.  If you don't seal all the openings well when the tank heats
> up and produces condensation that water will leak out the ports and create
> a mess and reduce the efficiency of the insulation.
>
> We used to make our own heat exchangers with K soft copper and trex to
> hold it all together.  That worked well on most systems but we had one
> where the copper eroded where it was in contact with the trex.   We think
> it was due to improper PH of the water in the tank. I'd recommend buying
> the heat exchangers from the manufacture.
>
> Good luck,
> Will
>
> __
> Will White
> Regional Field Operations Manager - New England
>
> Real Goods Solar
> 64 Main St.
> Montpelier, VT 05602
> Tel: (802) 223-7804
> Cell: (802) 234-3167
> www.realgoodssolar.com
>
> [Description:
> RGS12_Q2_MYTH_static_signature_1b]
>
>
>
> From: re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Nathan
> Stumpff
> Sent: Friday, August 10, 2012 3:03 PM
> To: re-wrenches@lists.re-wrenches.org
> Subject: [RE-wrenches] Thermal storage water stabilizer
>
> Thermal wrenches,
>
> I have a series of upcoming projects involving large (up to 10,000 gallon)
> water storage. They are closed (air-tight) but unpressurized (oversized
> expansion capability) systems, basically just a mass of water. We move
> heat in (solar, masonry heater) and out (DHW, space heating) exclusively
> via heat exchangers, so once we seal up the lid there is no introduction
> of any new material, including air, until bladder replacement or other
> maintenance, hopefully a long time off.
>
> Obviously de-ionized water would be the best choice for initial fill, but
> it is not going to happen. My thought is that with no new source of
> oxygen, minerals, etc., the small amounts that will be present on fill up
> can't pose a big problem.
>
> Anyone with experience here? Any ideas or leads for a stabilizer to add on
> initial fill? What problems am I not seeing?
>
> Many thanks,
> -Nathan
>
> --
> Nathan J. Stumpff - Arctic Sun, LLC
> NABCEP Certified PV Installer #091209-175
> NABCEP Certified Solar Heating Installer #032412-14
> nat...@arcticsun-llc.com
> Office: 907/457-1297
> ___
> List sponsored by Home Power magazine
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Options & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
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>
>


Matthew Partymiller
Solar Energy Solutions LLC
(859) 312-7456
m...@solar-energy-solutions.com


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Re: [RE-wrenches] Unirac SolarMount rail caps

[Chris Mason]

The SnapNRack ground mount rail system has end caps, we just installed them
on a project and they look great.

On Mon, Aug 13, 2012 at 9:24 AM, Mark Richardson <
mrichard...@newyorklightenergy.com> wrote:

>  We had to find end caps for a ground mount that was used as part of an
> environmental learning center.
>
> I was able to get vinyl end caps that worked online from caplugs (
> http://www.caplugs.com/).
>
> A little silicone to seal the deal…
>
> ** **
>
> [image: Description: Description: Description: NYLElogo]
>
> *Mark Richardson*
>
> mrichard...@newyorklightenergy.com
>
> ** **
>
> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *
> hol...@sbcglobal.net
> *Sent:* Saturday, August 11, 2012 10:05 AM
> *To:* RE-wrenches
>
> *Subject:* Re: [RE-wrenches] Unirac SolarMount rail caps
>
>  ** **
>
> just throwing this outaluminum angle attached to ends -  run between
> rail ends (each pair)? aluminum flat bar? closes ends and gives a trimmed
> look? Maybe use 24 or 22ga stainless than can be bent to form an angle? ask
> client to cover material cost as that is "custom" work beyond typical scope
> of build. 
>
> Holt E. Kelly
> Holtek Fireplace & Solar Products
> 500 Jewell Dr.
> Waco TX. 76712
> 254-751-9111
> www.holteksolar.com
>
>  - Original Message - 
>
> *From:* Maverick Brown [Maverick Solar]  
>
> *To:* 'RE-wrenches'  
>
> *Sent:* Friday, August 10, 2012 6:56 PM
>
> *Subject:* Re: [RE-wrenches] Unirac SolarMount rail caps
>
> ** **
>
> For the Bee’s sake, just pump some grey silicone caulk into the ends and
> scrape flat.  ??
>
> ** **
>
> *From:* re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Dana
> Brandt
> *Sent:* Friday, August 10, 2012 3:12 PM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] Unirac SolarMount rail caps
>
> ** **
>
> We just finished installing a system on SolarMount and the client is
> unhappy with how the ends of the SolarMount rail look. She says it looks
> unfinished and is concerned about bees nesting in them. I know there are
> other rail products with more finished looking ends but this system is
> already fully installed. Unirac has endcaps for the SunFrame, but those
> aren't compatible with SolarMount. Anyone run into this before? Thoughts on
> solutions?
>
> Thanks,
>
> Dana
>
> Dana Brandt
> Ecotech Energy Systems, LLC
> www.ecotechenergy.com
> d...@ecotechenergy.com
> 360.318.7646
>  --
>
> ___
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>
>


-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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Re: [RE-wrenches] disabled veteran-owned solar installation firms ?

[Jeff Yago]

We have a team together for a large design-build solar project for a
Veterans Hospital in Virginia.  The design team is solid and has lots of
prior electrical experience working at this specific facility and also has
solar design experience, but we need to include an installation firm on the
team that is certified by Veterans administration as "SDVOSB" - Service
Disabled Veteran-Owned Small Business.   Anybody interested and near
southern Virginia??

Jeff Yago
DTI Solar
804-457-9566
jry...@dtisolar.com



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Re: [RE-wrenches] Thermal storage water stabilizer

[Jeff Yago]

Distilled water is distilled water, not hot water.  Distilled water comes
from water boiled into a gas, then the gas is distilled by passing through a
cooling coil or heat exchanger, and when this gas turns back to a liquid it
is distilled water.

Commercial water distilling systems use either glass or stainless steel
piping because pure distilled water is very "corrosive" to many piping
materials.  If I leave several plastic gallons of distilled water around for
long periods they usually start to leak out.  Not sure if that is eating a
hole in the plastic or cheap plastic, but you will not get distilled water
by just heating, it must turn to dry steam (gas) first.

Jeff Yago


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Re: [RE-wrenches] Unirac SolarMount rail caps

[Jason Szumlanski]

I have put expanding foam inside the ends to prevent insects. As for the
finished look... never had the problem. We just do a clean cut with a sharp
blade and keep the length outside the module to a minimum.

Jason Szumlanski
Fafco Solar



On Fri, Aug 10, 2012 at 4:12 PM, Dana Brandt  wrote:

> We just finished installing a system on SolarMount and the client is
> unhappy with how the ends of the SolarMount rail look. She says it looks
> unfinished and is concerned about bees nesting in them. I know there are
> other rail products with more finished looking ends but this system is
> already fully installed. Unirac has endcaps for the SunFrame, but those
> aren't compatible with SolarMount. Anyone run into this before? Thoughts on
> solutions?
>
> Thanks,
>
> Dana
>
> Dana Brandt
> Ecotech Energy Systems, LLC
> www.ecotechenergy.com
> d...@ecotechenergy.com
> 360.318.7646
>
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Re: [RE-wrenches] Enphase M210-84-208-S12 Inverters Available?

[Nick Soleil]

HI Dave,

You are correct.  The Enphase Microinverters bond the DC positive to ground.

This is not an issue.  Most modules will operate normally with either; no
ground bond, the DC negative bonded, or the DC positive bonded.

SunPower modules are the exception, with a requirement for being positively
grounded.

Nick Soleil

On Mon, Aug 13, 2012 at 5:16 AM, Dave Click  wrote:

> Enphase already positive-grounds the module:
>
> http://enphase.com/support/**installation-wiring/
> Q: The Enphase Microinverter manual states that the device is positively
> grounded. Don't most PV modules have negative grounds? Is this a problem
> for Enphase?
> A: Enphase made the decision to positively ground its microinverters to
> minimize corrosion. Because Enphase Microinverters are positively grounded,
> they are compatible with both positively and negatively grounded modules.
>
>
> On 2012/8/12 13:29, JRQ wrote:
>
>> Louis,
>>
>> Can Enphase inverters be positively grounded? I wasn't aware that they
>> could. Otherwise you have an equipment mismatch problem that can't be
>> overcome under the listing of the modules and the inverters.
>>
>> Jeffrey Quackenbush.
>>
>>
>>
>> --**--**
>> 
>> *From:* Louis Woofenden 
>> *To:* RE-wrenches 
>> 
>> >
>> *Sent:* Tuesday, August 7, 2012 2:54 PM
>> *Subject:* [RE-wrenches] Enphase M210-84-208-S12 Inverters Available?
>>
>>
>>
>> Hi Wrenches,
>>
>> I'm trying to piece together an SunPower/Enphase job, and looking for up
>> to 25 Enphase M210-84-208-S12 inverters, which have been discontinued by
>> Enphase.
>>
>> If you happen to have any available (or know someone who does), can you
>> please contact me off-list at lo...@netzerosolar.net
>> , or 520-237-5040?
>>
>>
>> Thanks,
>>
>> Louis Woofenden
>>
>> Net Zero Solar, LLC
>> Tucson, AZ
>>
>> __**_
>> List sponsored by Home Power magazine
>>
>> List Address: 
>> re-wrenc...@lists.re-wrenches.**org
>> > >
>>
>>
>> Options & settings:
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>> wrenches.org
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-- 

Cordially,

*Nick Soleil*

*Field Applications Engineer
*

*Enphase Energy*

Mobile: (707) 321-2937
**


1420 North McDowell

Petaluma, CA 94954

www.enphase.com 

P: (707) 763-4784 x7267

F: (707) 763-0784

E: nsol...@enphaseenergy.com

[image: nabcep logo] Certified Solar PV Installer #03262011-300

“Don’t get me wrong: I love nuclear energy! It’s just that I prefer fusion
to fission. And it just so happens that there’s an enormous fusion reactor
safely banked a few million miles from us. It delivers more than we could
ever use in just about 8 minutes. And it’s wireless! .”

- William McDonough



This email message is for the sole use of the intended recipient(s) and may 
contain confidential and/or privileged information. If you are not an intended 
recipient, you may not review, use, copy, disclose or distribute this message. 
If you received this message in error, please contact the sender by reply email 
and destroy all copies of the origin

Re: [RE-wrenches] Enphase M210-84-208-S12 Inverters Available?

[Will White]

All SunPower modules with NE in the model number are specifically listed to be 
positive or negative ground or ungrounded with transformerless inverters.

Thanks,
Will

__
Will White
Regional Field Operations Manager - New England

Real Goods Solar
64 Main St.
Montpelier, VT 05602
Tel: (802) 223-7804
Cell: (802) 234-3167
www.realgoodssolar.com

[Description: 
RGS12_Q2_MYTH_static_signature_1b]



From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Nick Soleil
Sent: Monday, August 13, 2012 12:38 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Enphase M210-84-208-S12 Inverters Available?

HI Dave,

You are correct.  The Enphase Microinverters bond the DC positive to ground.

This is not an issue.  Most modules will operate normally with either; no 
ground bond, the DC negative bonded, or the DC positive bonded.

SunPower modules are the exception, with a requirement for being positively 
grounded.

Nick Soleil
On Mon, Aug 13, 2012 at 5:16 AM, Dave Click 
mailto:davecl...@fsec.ucf.edu>> wrote:
Enphase already positive-grounds the module:

http://enphase.com/support/installation-wiring/
Q: The Enphase Microinverter manual states that the device is positively 
grounded. Don't most PV modules have negative grounds? Is this a problem for 
Enphase?
A: Enphase made the decision to positively ground its microinverters to 
minimize corrosion. Because Enphase Microinverters are positively grounded, 
they are compatible with both positively and negatively grounded modules.


On 2012/8/12 13:29, JRQ wrote:
Louis,

Can Enphase inverters be positively grounded? I wasn't aware that they
could. Otherwise you have an equipment mismatch problem that can't be
overcome under the listing of the modules and the inverters.

Jeffrey Quackenbush.



*From:* Louis Woofenden mailto:lo...@woofenden.net>>
*To:* RE-wrenches 
mailto:re-wrenches@lists.re-wrenches.org>>
*Sent:* Tuesday, August 7, 2012 2:54 PM
*Subject:* [RE-wrenches] Enphase M210-84-208-S12 Inverters Available?



Hi Wrenches,

I'm trying to piece together an SunPower/Enphase job, and looking for up
to 25 Enphase M210-84-208-S12 inverters, which have been discontinued by
Enphase.

If you happen to have any available (or know someone who does), can you
please contact me off-list at 
lo...@netzerosolar.net
>, or 
520-237-5040?


Thanks,

Louis Woofenden

Net Zero Solar, LLC
Tucson, AZ

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--

Cordially,

Nick Soleil

Field Applications Engineer

Enphase Energy

Mobile: (707) 321-2937



1420 North McDowell

Petaluma, CA 94954

www.enphase.com

P: (707) 763-4784 x7267

F: (707) 763-0784

E: nsol...@enphaseenergy.com

[nabcep logo] Certified Solar PV Installer #03262011-300

"Don't get me wrong: I love nuclear energy! It's just that I prefer fusion to 
fission. And it just so happens that there's an enormous fusion reactor safely 
bank

Re: [RE-wrenches] Thermal storage water stabilizer

[Nathan Stumpff]

Thanks for the responses, all.

Matt, I am coming up short with an internet search for 'Seltrol 112' and 
'Seltrol 112 inhibitor.' Do you have a data sheet and/or a lead where to buy it 
and find out more?

Thanks,
-Nathan

--
Nathan J. Stumpff - Arctic Sun, LLC
NABCEP Certified PV Installer #091209-175
NABCEP Certified Solar Heating Installer #032412-14
nat...@arcticsun-llc.com
Office: 907/457-1297

-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of 
m...@solar-energy-solutions.com
Sent: Monday, August 13, 2012 5:35 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Thermal storage water stabilizer

We have used Seltrol 112 as an inhibitor in large unpressurized drainback 
systems based on a recommendation from Holocene.

I have previously worked on large unpressurized systems from other installers 
and not seen any issues with their tap water-only systems (though I have seen 
multiple issues with tank corrosion due to incorrect tank material 
specification).

Matt


> Nathan,
>
> We've done a couple of systems with large unpressurized tanks (STSS).
> They work well but there are a couple of things you need to pay 
> attention to.  We use tap water to fill the tank which works fine but 
> you have to make sure the PH of the water is in the correct range.  I 
> can't remember what that is off hand but the STSS manual has a whole 
> section on correct PH and want to add (I think it's baking soda) to 
> correct the PH.  The second tip is make sure all the ports and the lid 
> are properly sealed with calk.  The STSS tanks come with the calk, I'm 
> not sure if other brands include it.  If you don't seal all the 
> openings well when the tank heats up and produces condensation that 
> water will leak out the ports and create a mess and reduce the efficiency of 
> the insulation.
>
> We used to make our own heat exchangers with K soft copper and trex to 
> hold it all together.  That worked well on most systems but we had one
> where the copper eroded where it was in contact with the trex.   We think
> it was due to improper PH of the water in the tank. I'd recommend 
> buying the heat exchangers from the manufacture.
>
> Good luck,
> Will
>
> __
> 
> Will White
> Regional Field Operations Manager - New England
>
> Real Goods Solar
> 64 Main St.
> Montpelier, VT 05602
> Tel: (802) 223-7804
> Cell: (802) 234-3167
> www.realgoodssolar.com
>
> [Description:
> RGS12_Q2_MYTH_static_signature_1b] 7_solar_myths.php>
>
>
>
> From: re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Nathan 
> Stumpff
> Sent: Friday, August 10, 2012 3:03 PM
> To: re-wrenches@lists.re-wrenches.org
> Subject: [RE-wrenches] Thermal storage water stabilizer
>
> Thermal wrenches,
>
> I have a series of upcoming projects involving large (up to 10,000 
> gallon) water storage. They are closed (air-tight) but unpressurized 
> (oversized expansion capability) systems, basically just a mass of 
> water. We move heat in (solar, masonry heater) and out (DHW, space 
> heating) exclusively via heat exchangers, so once we seal up the lid 
> there is no introduction of any new material, including air, until 
> bladder replacement or other maintenance, hopefully a long time off.
>
> Obviously de-ionized water would be the best choice for initial fill, 
> but it is not going to happen. My thought is that with no new source 
> of oxygen, minerals, etc., the small amounts that will be present on 
> fill up can't pose a big problem.
>
> Anyone with experience here? Any ideas or leads for a stabilizer to 
> add on initial fill? What problems am I not seeing?
>
> Many thanks,
> -Nathan
>
> --
> Nathan J. Stumpff - Arctic Sun, LLC
> NABCEP Certified PV Installer #091209-175 NABCEP Certified Solar 
> Heating Installer #032412-14 
> nat...@arcticsun-llc.com
> Office: 907/457-1297
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Matthew Partymiller
Solar Energy Solutions LLC
(859) 312-7456
m...@solar-energy-solutions.com


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Re: [RE-wrenches] Unirac SolarMount rail caps

[Dana Brandt]

Thanks for the thoughts, everyone.

I suggested filing the ends with grey caulk, but the homeowner didn't like
that idea.

I think I'm leaning toward finding some aluminum channel or angle to fit
over the end and either glue or screw it on.

Mark - Did you find rectangular vinyl caps? I checked out caplugs, but
couldn't find anything that looked like it would work.

Thanks,

Dana

Dana Brandt
Ecotech Energy Systems, LLC
www.ecotechenergy.com
d...@ecotechenergy.com
360.318.7646


On Mon, Aug 13, 2012 at 6:24 AM, Mark Richardson <
mrichard...@newyorklightenergy.com> wrote:

>  We had to find end caps for a ground mount that was used as part of an
> environmental learning center.
>
> I was able to get vinyl end caps that worked online from caplugs (
> http://www.caplugs.com/).
>
> A little silicone to seal the deal…
>
> ** **
>
> [image: Description: Description: Description: NYLElogo]
>
> *Mark Richardson*
>
> mrichard...@newyorklightenergy.com
>
> ** **
>
> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *
> hol...@sbcglobal.net
> *Sent:* Saturday, August 11, 2012 10:05 AM
> *To:* RE-wrenches
>
> *Subject:* Re: [RE-wrenches] Unirac SolarMount rail caps
>
>  ** **
>
> just throwing this outaluminum angle attached to ends -  run between
> rail ends (each pair)? aluminum flat bar? closes ends and gives a trimmed
> look? Maybe use 24 or 22ga stainless than can be bent to form an angle? ask
> client to cover material cost as that is "custom" work beyond typical scope
> of build. 
>
> Holt E. Kelly
> Holtek Fireplace & Solar Products
> 500 Jewell Dr.
> Waco TX. 76712
> 254-751-9111
> www.holteksolar.com
>
>  - Original Message - 
>
> *From:* Maverick Brown [Maverick Solar]  
>
> *To:* 'RE-wrenches'  
>
> *Sent:* Friday, August 10, 2012 6:56 PM
>
> *Subject:* Re: [RE-wrenches] Unirac SolarMount rail caps
>
> ** **
>
> For the Bee’s sake, just pump some grey silicone caulk into the ends and
> scrape flat.  ??
>
> ** **
>
> *From:* re-wrenches-boun...@lists.re-wrenches.org
> [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Dana
> Brandt
> *Sent:* Friday, August 10, 2012 3:12 PM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] Unirac SolarMount rail caps
>
> ** **
>
> We just finished installing a system on SolarMount and the client is
> unhappy with how the ends of the SolarMount rail look. She says it looks
> unfinished and is concerned about bees nesting in them. I know there are
> other rail products with more finished looking ends but this system is
> already fully installed. Unirac has endcaps for the SunFrame, but those
> aren't compatible with SolarMount. Anyone run into this before? Thoughts on
> solutions?
>
> Thanks,
>
> Dana
>
> Dana Brandt
> Ecotech Energy Systems, LLC
> www.ecotechenergy.com
> d...@ecotechenergy.com
> 360.318.7646
>  --
>
> ___
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Re: [RE-wrenches] Unirac SolarMount rail caps

[Mark Richardson]

Dana,
We were looking for a square cap, but I think I remember some rectangular ones?
Their site isn't very navigable, so maybe a call to C.S.?

[Description: Description: Description: NYLElogo]
Mark Richardson
mrichard...@newyorklightenergy.com

From: re-wrenches-boun...@lists.re-wrenches.org 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dana Brandt
Sent: Monday, August 13, 2012 2:37 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Unirac SolarMount rail caps

Thanks for the thoughts, everyone.

I suggested filing the ends with grey caulk, but the homeowner didn't like that 
idea.

I think I'm leaning toward finding some aluminum channel or angle to fit over 
the end and either glue or screw it on.

Mark - Did you find rectangular vinyl caps? I checked out caplugs, but couldn't 
find anything that looked like it would work.

Thanks,

Dana

Dana Brandt
Ecotech Energy Systems, LLC
www.ecotechenergy.com
d...@ecotechenergy.com
360.318.7646

On Mon, Aug 13, 2012 at 6:24 AM, Mark Richardson 
mailto:mrichard...@newyorklightenergy.com>> 
wrote:
We had to find end caps for a ground mount that was used as part of an 
environmental learning center.
I was able to get vinyl end caps that worked online from caplugs 
(http://www.caplugs.com/).
A little silicone to seal the deal...

Mark Richardson
mrichard...@newyorklightenergy.com

From: 
re-wrenches-boun...@lists.re-wrenches.org
 
[mailto:re-wrenches-boun...@lists.re-wrenches.org]
 On Behalf Of hol...@sbcglobal.net
Sent: Saturday, August 11, 2012 10:05 AM
To: RE-wrenches

Subject: Re: [RE-wrenches] Unirac SolarMount rail caps

just throwing this outaluminum angle attached to ends -  run between rail 
ends (each pair)? aluminum flat bar? closes ends and gives a trimmed look? 
Maybe use 24 or 22ga stainless than can be bent to form an angle? ask client to 
cover material cost as that is "custom" work beyond typical scope of build.
Holt E. Kelly
Holtek Fireplace & Solar Products
500 Jewell Dr.
Waco TX. 76712
254-751-9111
www.holteksolar.com
- Original Message -
From: Maverick Brown [Maverick Solar]
To: 'RE-wrenches'
Sent: Friday, August 10, 2012 6:56 PM
Subject: Re: [RE-wrenches] Unirac SolarMount rail caps

For the Bee's sake, just pump some grey silicone caulk into the ends and scrape 
flat.  ??

From: 
re-wrenches-boun...@lists.re-wrenches.org
 
[mailto:re-wrenches-boun...@lists.re-wrenches.org]
 On Behalf Of Dana Brandt
Sent: Friday, August 10, 2012 3:12 PM
To: RE-wrenches
Subject: [RE-wrenches] Unirac SolarMount rail caps

We just finished installing a system on SolarMount and the client is unhappy 
with how the ends of the SolarMount rail look. She says it looks unfinished and 
is concerned about bees nesting in them. I know there are other rail products 
with more finished looking ends but this system is already fully installed. 
Unirac has endcaps for the SunFrame, but those aren't compatible with 
SolarMount. Anyone run into this before? Thoughts on solutions?

Thanks,

Dana

Dana Brandt
Ecotech Energy Systems, LLC
www.ecotechenergy.com
d...@ecotechenergy.com
360.318.7646

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Re: [RE-wrenches] Murphy Gen Control Oopsies

[dan]

Turns out to be a grounding issue.. the solenoid uses a common ground wire for suck in and run. It also shares a circuit with the starter solenoid. so when it sees no/ bad ground, the next best path is thru the starter solenoid.. which can energize the start circuit (sorta). They told us similar stories in E3. i.e. houses can do the same kinda thing when the ground / neutral gets disturbed..   been known to cause fires in an adjacent house with no power (No meter). Thanks Guys. dbDan BrownFoxfire Energy Corp.Renewable Energy Systems(802)-483-2564www.Foxfire-Energy.comNABCEP #092907-44


 Original Message 
Subject: [RE-wrenches] Murphy Gen Control Oopsies
From: 
Date: Sun, August 12, 2012 7:19 pm
To: "RE-wrenches" 

Anyone else having issues with Murphy Controls and Off Grid Systems? I have two installs w/ GPP Isuzu diesels on Mecca Alti Gen sets built by Mack Boring and Parts as primary power units. one is a 12K unit, the other a 20. both use Murphy controls, and both are toasting their fuel solenoid at random. the smaller one (Customer purchased/ we installed to back up an OB 7224 system). it's been in for a few years, but spits it's fuel solenoid twice a year like clock work (the first two times it took out the starter as well.. we think something caused the starter to suck in while running ). the second one (the 20K), has only been in since last fall and just spit the same solenoid for the first time. this one is backing up an OB14,400 system. Both use make or break (dry) contact for gen run, and both use OB AGS from the Master. Since Sandy left Mack Boring I can't seem to get a straight answer from anyone.. (other than they're very sorry, the gensets are out of warranty). I can almost see messing up one somehow.. but both? apparently the solenoids use two coils -- one to suck in, the other to hold. Sandy was thinking something was causing the suck in coil to overwork which made the thing over heat and  fail.  I have dozens of other off grid systems with generator back up of one flavor or other and have never seen this kind of problem with any of them. I'm stumped. Suggestions? Thanks dbDan BrownFoxfire Energy Corp.Renewable Energy Systems(802)-483-2564www.Foxfire-Energy.comNABCEP #092907-44   ___
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Re: [RE-wrenches] Unirac SolarMount rail caps

[Howie Michaelson]

Haven't looked at how different the profiles are,  but IronRidge's light rail 
is fairly similar and they make black plastic end caps that you might be able 
to make work...

Howie Michaelson
NABCEP Certified PV Installer
Catamount Solar 
www.catamountsolar.com
802.272.0004

Sent from my cellphone

Dana Brandt  wrote:

>Thanks for the thoughts, everyone.
>
>I suggested filing the ends with grey caulk, but the homeowner didn't like
>that idea.
>
>I think I'm leaning toward finding some aluminum channel or angle to fit
>over the end and either glue or screw it on.
>
>Mark - Did you find rectangular vinyl caps? I checked out caplugs, but
>couldn't find anything that looked like it would work.
>
>Thanks,
>
>Dana
>
>Dana Brandt
>Ecotech Energy Systems, LLC
>www.ecotechenergy.com
>d...@ecotechenergy.com
>360.318.7646
>
>
>On Mon, Aug 13, 2012 at 6:24 AM, Mark Richardson <
>mrichard...@newyorklightenergy.com> wrote:
>
>>  We had to find end caps for a ground mount that was used as part of an
>> environmental learning center.
>>
>> I was able to get vinyl end caps that worked online from caplugs (
>> http://www.caplugs.com/).
>>
>> A little silicone to seal the deal…
>>
>> ** **
>>
>> [image: Description: Description: Description: NYLElogo]
>>
>> *Mark Richardson*
>>
>> mrichard...@newyorklightenergy.com
>>
>> ** **
>>
>> *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto:
>> re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *
>> hol...@sbcglobal.net
>> *Sent:* Saturday, August 11, 2012 10:05 AM
>> *To:* RE-wrenches
>>
>> *Subject:* Re: [RE-wrenches] Unirac SolarMount rail caps
>>
>>  ** **
>>
>> just throwing this outaluminum angle attached to ends -  run between
>> rail ends (each pair)? aluminum flat bar? closes ends and gives a trimmed
>> look? Maybe use 24 or 22ga stainless than can be bent to form an angle? ask
>> client to cover material cost as that is "custom" work beyond typical scope
>> of build. 
>>
>> Holt E. Kelly
>> Holtek Fireplace & Solar Products
>> 500 Jewell Dr.
>> Waco TX. 76712
>> 254-751-9111
>> www.holteksolar.com
>>
>>  - Original Message - 
>>
>> *From:* Maverick Brown [Maverick Solar]  
>>
>> *To:* 'RE-wrenches'  
>>
>> *Sent:* Friday, August 10, 2012 6:56 PM
>>
>> *Subject:* Re: [RE-wrenches] Unirac SolarMount rail caps
>>
>> ** **
>>
>> For the Bee’s sake, just pump some grey silicone caulk into the ends and
>> scrape flat.  ??
>>
>> ** **
>>
>> *From:* re-wrenches-boun...@lists.re-wrenches.org
>> [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Dana
>> Brandt
>> *Sent:* Friday, August 10, 2012 3:12 PM
>> *To:* RE-wrenches
>> *Subject:* [RE-wrenches] Unirac SolarMount rail caps
>>
>> ** **
>>
>> We just finished installing a system on SolarMount and the client is
>> unhappy with how the ends of the SolarMount rail look. She says it looks
>> unfinished and is concerned about bees nesting in them. I know there are
>> other rail products with more finished looking ends but this system is
>> already fully installed. Unirac has endcaps for the SunFrame, but those
>> aren't compatible with SolarMount. Anyone run into this before? Thoughts on
>> solutions?
>>
>> Thanks,
>>
>> Dana
>>
>> Dana Brandt
>> Ecotech Energy Systems, LLC
>> www.ecotechenergy.com
>> d...@ecotechenergy.com
>> 360.318.7646
>>  --
>>
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