Re: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation
Jason, It's funny that you bring this up because it is an issue that we constantly face on commercial new construction. Commercial roofers want 8 plus for their lead jacks plus the cricket often takes several inches above the deck. Many folks in the Bay Area are using Hollaender rail fittings with galvanized steel or aluminum pipe. The advantage is that you can cut the pipe as long as needed. The entire setup is very robust but a bit costly. Here's a link to various types of flanges they offer: http://www.hollaender.com/?page=flanges And here's a solar-specific link: http://solar.hollaender.com/ I'm looking forward to seeing if anyone else knows about off the shelf longer stanchions. Unirac used to make custom longer lengths of their steel standoff but no longer offer it. Best, August *August Goers* Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto: re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Jason Szumlanski *Sent:* Tuesday, September 10, 2013 1:27 PM *To:* RE-wrenches *Subject:* [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation Let me start be saying that I'm talking about mechanically attached tilt-mount solutions capable of handling 172 mph design wind speed, ASCE 7-10. Ballasted systems need not apply. We've used a variety of hardware for TPO membrane flat roofs, which is becoming more and more popular around here. We've found that hardware bases that mount on top of the membrane work well when there is a single slope in the array area and the rails can follow the contours of the roof surface. Ecofasten base plates spread the load out enough onto a DeskDeck roof board or similar, and have proven to be pretty versatile. However, when you have center drains or other situations with multiple slopes, it is advantageous to attach to the roof deck directly, typically plywood here, particularly in new construction. Tapered insulation, decking, and membrane can be cut around stand-offs and flashed nicely with 8 TPO boots. This keeps rails parallel to the trusses/ground, and disregards the roof membrane slope. The problem with this is that insulation can easily get to be 6 thick, even on a small residential flat roof, requiring a minimum 14 long stand-off to fit a standard TPO boot above the membrane. Long story short, what mounting systems are others using for this scenario, and who offers long stand-offs? J ason Szumlanski Fafco Solar ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] IronRidge Integrated Grounding System
http://ironridge.com/ig Any first impressions on this new product? WEEBs require replacement after modules are removed for service. I wonder of the IronRidge mid-clamps biting into the same module frame locations after service have been tested and approved. Moving the module to bite into new holes in the frame is impractical, so I hope this has been addressed. Otherwise, this looks like a simplified approach to module and rail grounding. J ason Szumlanski Fafco Solar ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] Who has the best overall solar racking solution?
Greetings Fellow Wrenchies, With all the racking options out there today, are there any stand outs in terms of quality and installation time. We are in the process of evaluating our racking system and with all the options its a little mind boggeling. Mahalo in advance! * James B Rudolph* *Heleakala Solar* ** *Director of Construction* *NABCEP Certified PV Installer * *Licensed ES Electrician * * * * * * *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 ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation
I'm wondering if multiple 7 Unirac 2-piece Stand-Offs cylinders threaded together with all-thread would be a structurally sound solution. I'll pass that option by the engineers... Still hoping for an off-the-shelf solution... J ason On Tue, Sep 10, 2013 at 4:38 PM, August Goers aug...@luminalt.com wrote: Jason, It's funny that you bring this up because it is an issue that we constantly face on commercial new construction. Commercial roofers want 8 plus for their lead jacks plus the cricket often takes several inches above the deck. Many folks in the Bay Area are using Hollaender rail fittings with galvanized steel or aluminum pipe. The advantage is that you can cut the pipe as long as needed. The entire setup is very robust but a bit costly. Here's a link to various types of flanges they offer: http://www.hollaender.com/?page=flanges And here's a solar-specific link: http://solar.hollaender.com/ I'm looking forward to seeing if anyone else knows about off the shelf longer stanchions. Unirac used to make custom longer lengths of their steel standoff but no longer offer it. Best, August *August Goers* Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto: re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Jason Szumlanski *Sent:* Tuesday, September 10, 2013 1:27 PM *To:* RE-wrenches *Subject:* [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation Let me start be saying that I'm talking about mechanically attached tilt-mount solutions capable of handling 172 mph design wind speed, ASCE 7-10. Ballasted systems need not apply. We've used a variety of hardware for TPO membrane flat roofs, which is becoming more and more popular around here. We've found that hardware bases that mount on top of the membrane work well when there is a single slope in the array area and the rails can follow the contours of the roof surface. Ecofasten base plates spread the load out enough onto a DeskDeck roof board or similar, and have proven to be pretty versatile. However, when you have center drains or other situations with multiple slopes, it is advantageous to attach to the roof deck directly, typically plywood here, particularly in new construction. Tapered insulation, decking, and membrane can be cut around stand-offs and flashed nicely with 8 TPO boots. This keeps rails parallel to the trusses/ground, and disregards the roof membrane slope. The problem with this is that insulation can easily get to be 6 thick, even on a small residential flat roof, requiring a minimum 14 long stand-off to fit a standard TPO boot above the membrane. Long story short, what mounting systems are others using for this scenario, and who offers long stand-offs? J ason Szumlanski Fafco Solar ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Who has the best overall solar racking solution?
Sub question/ Best ballasted flat roof rack? Jay Peltz power Sent from my iPhone On Sep 10, 2013, at 1:04 PM, James Rudolph jamesrudolp...@gmail.com wrote: Greetings Fellow Wrenchies, With all the racking options out there today, are there any stand outs in terms of quality and installation time. We are in the process of evaluating our racking system and with all the options its a little mind boggeling. Mahalo in advance! James B Rudolph Heleakala Solar Director of Construction NABCEP Certified PV Installer Licensed ES Electrician ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Who has the best overall solar racking solution?
September 2013 | Creotecc Solar Mounting Systems I use Ironridge all the time and like the sturdiness but I've always liked the idea of Creotecc and and really want to try it. Anyone have any first-hand experience? The images included in the forwarded email are interesting, especially when looking at the biting effect of Ironridge's IGS. Eric SunHarvest - Original Message - From: Creotecc US To: e...@harvesthesun.com Sent: Wednesday, September 04, 2013 3:45 PM Subject: Reduce Micro-Cracks and Hot Spots September 4, 2013 Clampless Module Mounting Can Reduce Hot Spots Compelling new images show that Creotecc's lay-in rail system can reduce hot spots. These thermal photos from two similar ground-mount arrays reveal vastly different systems. The Creotecc system is devoid of hot spots because mechanical stress from thermal expansion is alleviated by clampless module mounting. In addition, mounting modules from underneath the array eliminates the risk of point loads from bodyweight. Read the entire article Reducing Hot Spots in this month's edition of North American Clean Energy. Read Article Spotlight on Agriculture Farmers are experts at striking that balance between quality and affordability. Many businesses would do well to model what successful farmers have been practicing for decades: selecting the most robust, durable materials while keeping a tight fist on the budget. At Creotecc, we have been delivering strong, affordable ground mount systems to agriculture for years. Give us a call today for support on your next farm project. Contact Creotecc Request A Quote Creotecc quote packages include highly competitive pricing, comprehensive BOM, and preliminary engineering and design. Projects over 500kW receive free custom construction plan sets with P.E. stamps, geotechnical facilitation, in-house engineering support, on-site training, and more. To get started, click on the link below and receive a quote within 48 hours. Request A Quote 11 Janis Way | Scotts Valley, CA | 95066 | Tel: 831.438.9000 | Email: i...@creotecc.us Forward email This email was sent to e...@harvesthesun.com by i...@creotecc.us | Update Profile/Email Address | Instant removal with SafeUnsubscribeT | Privacy Policy. Creotecc | 11 Janis Way | Scotts Valley | CA | 95066 ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] programmable relay board
Hello wrenches, I am swapping out a customer that had an SW 4024. We are going to replace it with a Magnum MS4024. He had been using Relays 9 10 on the SW to control input from a small hydro system, with each one controlling two different hydro turbines. He set this up himself and it seems to work well. I am looking for a suitable replacement programmable relay board that would offer similar or better functionality as Relays 9 10 on the SW. Any suggestions for robust programmable relay boards with good documentation? Thanks -- Mac Lewis * Yo solo sé que no sé nada. -Sócrates * ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] programmable relay board
On 9/11/2013 7:44 AM, Mac Lewis wrote: I am looking for a suitable replacement programmable relay board that would offer similar or better functionality as Relays 9 10 on the SW. Any suggestions for robust programmable relay boards with good documentation? I am not familiar with relay 9 and 10 operation. But I have found the Morningstar Relay Driver to be a good solid unit. http://www.morningstarcorp.com/en/relay-driver Free software on Morningstar's website. Requires 9 pin RS-232 port on PC. Can program voltage thresholds, generator starts, etc. We used to use them extensively at remote sites. We've gone towards more specialized gear now, but that is not due to any shortcoming on the Relay Drivers part. (incidentally and shameless plug, I have some used units available for $50 + shipping) Good luck, -James Jarvis APRS World, LLC http://www.aprsworld.com/ ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] L16 Accident! Damage Questions
Esteemed Wrenches,I need your advice on this most unfortunate situation.I arranged a purchase of 16 Trojan L16 RE-Bs for a client and they went to pick them up. They didn't secure them well on their flatbed tralier and as they climbed their windy mountain driveway they lost 4 of the batteries over the side of the road and several more fell on their side on the trailer.The damage falls in 3 categories:1) Broken or cracked posts, caps and handles,2) Loss of Acid3) Unknown damage due to shock of falling . . . It's the last category that concerns me - I'm recommending they replace the ones that took a tumble enough to break posts. (although experience with fixing posts would be welcomed)And the loss of acid doesn't seem extensive - the voltage is holding fine - perhaps we'll just add water or perhaps acid and water - we'll work that one. (though any input on amount of acid lost before needing to add acid would be welcomed input) (all but one seem to be above the plates still).But I'm seeking advice on whether you can trust an L16 that has violently fallen on its side. Can the force of a fall like that loosen or crack plates and cause problems that show up later?Here's the summary of damage:Battery Voltage Damage Fill Level 1 6.342 2 6.343 3 6.341 4 6.318 5 6.351 6 6.315 7 6.349 8 6.314 9 6.344 Broken Post 10 6.348 Cracked Post 11 6.33 12 6.336 13 6.304 Broken Handle 14 6.346 Broken Handle 15 6.334 2 Broken Posts, Case Cracked, Broken Handle Plate Exposed16 6.34 Thanks!-- Jeff Clearwater Village Power Design Renewable Energy Design InstallationEcovillage Design ConsultantLicensed Solar Contractor in CA - C-46 www.villagepower.com 413-559-9763 ~~ -- Jeff Clearwater Village Power Design Renewable Energy Design InstallationEcovillage Design ConsultantNABCEP Certified Solar PV InstallerLicensed Solar Contractor in CA - C-46 www.villagepower.com 413-559-9763 ~~ ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Who has the best overall solar racking solution?
Back in the 1980's we used a company called Baird (www.bairdmounts.com) to engineer NPR mounts for satellite communication antennas. I have used many of their products for antennas up to 5 meters and never a failure or problem. I have not used their mounts for PV solar but I expect their quality has endured. Larry On Sep 10, 2013, at 3:11 PM, Jay Peltz j...@asis.com wrote: Sub question/ Best ballasted flat roof rack? Jay Peltz power Sent from my iPhone On Sep 10, 2013, at 1:04 PM, James Rudolph jamesrudolp...@gmail.com wrote: Greetings Fellow Wrenchies, With all the racking options out there today, are there any stand outs in terms of quality and installation time. We are in the process of evaluating our racking system and with all the options its a little mind boggeling. Mahalo in advance! James B Rudolph Heleakala Solar Director of Construction NABCEP Certified PV Installer Licensed ES Electrician ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] Sundanzer questions
Wrenches. We have sold four Sundanzer chest refrigerators or freezers over the last ten years. All have worked without a hitch. Today I got a call from a customer asking about DC refrigerators; when I mentioned Sundanzer, she stopped me. She said the reviews on Amazon convinced her not to buy one. I checked the reviews; of nine (among all four chest models), I read five 5-star, one 4-star, one 3-star, and two 1-star. The 1- and 3-star reviews were about both failure of the units and lack of support from the manufacturer. So I'm curious: who has sold many of these? How have they performed? And what has been your experience with dealer support? Thanks, Allan -- Allan Sindelar al...@positiveenergysolar.com NABCEP Certified PV Installation Professional NABCEP Certified Technical Sales Professional New Mexico EE98J Journeyman Electrician Founder and Chief Technology Officer Positive Energy, Inc., a Certified B CorporationTM 3209 Richards Lane Santa Fe, New Mexico 87507 505 424-1112 office 780-2738 cell www.positiveenergysolar.com ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Sundanzer questions
One out there, now about 7 years. Customers are happy. No problems. Dick Ratico Solarwind Electric You Wrote: Wrenches. We have sold four Sundanzer chest refrigerators or freezers over the last ten years. All have worked without a hitch. Today I got a call from a customer asking about DC refrigerators; when I mentioned Sundanzer, she stopped me. She said the reviews on Amazon convinced her not to buy one. I checked the reviews; of nine (among all four chest models), I read five 5-star, one 4-star, one 3-star, and two 1-star. The 1- and 3-star reviews were about both failure of the units and lack of support from the manufacturer. So I'm curious: who has sold many of these? How have they performed? And what has been your experience with dealer support? Thanks, Allan ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation
We've always had ours made by a local shop to fit the roof. I can't say I've ever looked for an off to shelf solution. Jesse Sent from my iPhone On Sep 11, 2013, at 9:13 AM, Garrison Riegel garri...@solarserviceinc.com wrote: Schletter makes their 2” diameter aluminum stanchions in a variety of sizes, up to 12”. We have done a number of jobs on the exact roof you are describing using the attached version of the Schletter Windsafe. Their stanchion has a pretty small base with 4 holes for attachment, like the UniRac, so we always lag them into structural framing or blocking. Ironridge also has a nice attached tilt up solution for a single module rows, but last time I checked the lead time on their 12” standoff was 6 weeks. When we need heights over 12” we have a local fab shop make them for us. Windsafe spec: http://www.schletter.us/support/Windsafe_Product_Sheet.pdf Stanchions on page 9: http://www.schletter.us/support/I43%20Component_OV.pdf Best Garrison Riegel Project Manager | Solar Service Inc [p] 847-677-0950 | garri...@solarserviceinc.com NABCEP Certified PV Installation Professional™ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason Szumlanski Sent: Tuesday, September 10, 2013 4:03 PM To: RE-wrenches Subject: Re: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation I'm wondering if multiple 7 Unirac 2-piece Stand-Offs cylinders threaded together with all-thread would be a structurally sound solution. I'll pass that option by the engineers... Still hoping for an off-the-shelf solution... J ason On Tue, Sep 10, 2013 at 4:38 PM, August Goers aug...@luminalt.com wrote: Jason, It's funny that you bring this up because it is an issue that we constantly face on commercial new construction. Commercial roofers want 8 plus for their lead jacks plus the cricket often takes several inches above the deck. Many folks in the Bay Area are using Hollaender rail fittings with galvanized steel or aluminum pipe. The advantage is that you can cut the pipe as long as needed. The entire setup is very robust but a bit costly. Here's a link to various types of flanges they offer: http://www.hollaender.com/?page=flanges And here's a solar-specific link: http://solar.hollaender.com/ I'm looking forward to seeing if anyone else knows about off the shelf longer stanchions. Unirac used to make custom longer lengths of their steel standoff but no longer offer it. Best, August August Goers Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason Szumlanski Sent: Tuesday, September 10, 2013 1:27 PM To: RE-wrenches Subject: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation Let me start be saying that I'm talking about mechanically attached tilt-mount solutions capable of handling 172 mph design wind speed, ASCE 7-10. Ballasted systems need not apply. We've used a variety of hardware for TPO membrane flat roofs, which is becoming more and more popular around here. We've found that hardware bases that mount on top of the membrane work well when there is a single slope in the array area and the rails can follow the contours of the roof surface. Ecofasten base plates spread the load out enough onto a DeskDeck roof board or similar, and have proven to be pretty versatile. However, when you have center drains or other situations with multiple slopes, it is advantageous to attach to the roof deck directly, typically plywood here, particularly in new construction. Tapered insulation, decking, and membrane can be cut around stand-offs and flashed nicely with 8 TPO boots. This keeps rails parallel to the trusses/ground, and disregards the roof membrane slope. The problem with this is that insulation can easily get to be 6 thick, even on a small residential flat roof, requiring a minimum 14 long stand-off to fit a standard TPO boot above the membrane. Long story short, what mounting systems are others using for this scenario, and who offers long stand-offs? J ason Szumlanski Fafco Solar ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings:
Re: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation
This is a similar solution to the Hollaender foot but from Unirac: http://www.civicsolar.com/product/unirac-403216s Cutting pipe isn't that big of a deal, but you need to have threaded pipe for this product compared to the Hollaender fitting which uses set screws. More food for thought. Best, August *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto: re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Jesse Dahl *Sent:* Wednesday, September 11, 2013 3:25 PM *To:* RE-wrenches *Subject:* Re: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation We've always had ours made by a local shop to fit the roof. I can't say I've ever looked for an off to shelf solution. Jesse Sent from my iPhone On Sep 11, 2013, at 9:13 AM, Garrison Riegel garri...@solarserviceinc.com wrote: Schletter makes their 2” diameter aluminum stanchions in a variety of sizes, up to 12”. We have done a number of jobs on the exact roof you are describing using the attached version of the Schletter Windsafe. Their stanchion has a pretty small base with 4 holes for attachment, like the UniRac, so we always lag them into structural framing or blocking. Ironridge also has a nice attached tilt up solution for a single module rows, but last time I checked the lead time on their 12” standoff was 6 weeks. When we need heights over 12” we have a local fab shop make them for us. Windsafe spec: http://www.schletter.us/support/Windsafe_Product_Sheet.pdf Stanchions on page 9: http://www.schletter.us/support/I43%20Component_OV.pdf Best Garrison Riegel Project Manager | *Solar Service Inc* http://www.solarserviceinc.com/ [p] 847-677-0950 | garri...@solarserviceinc.com NABCEP Certified PV Installation Professional™ *From:* re-wrenches-boun...@lists.re-wrenches.org [ mailto:re-wrenches-boun...@lists.re-wrenches.orgre-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Jason Szumlanski *Sent:* Tuesday, September 10, 2013 4:03 PM *To:* RE-wrenches *Subject:* Re: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation I'm wondering if multiple 7 Unirac 2-piece Stand-Offs cylinders threaded together with all-thread would be a structurally sound solution. I'll pass that option by the engineers... Still hoping for an off-the-shelf solution... J ason On Tue, Sep 10, 2013 at 4:38 PM, August Goers aug...@luminalt.com wrote: Jason, It's funny that you bring this up because it is an issue that we constantly face on commercial new construction. Commercial roofers want 8 plus for their lead jacks plus the cricket often takes several inches above the deck. Many folks in the Bay Area are using Hollaender rail fittings with galvanized steel or aluminum pipe. The advantage is that you can cut the pipe as long as needed. The entire setup is very robust but a bit costly. Here's a link to various types of flanges they offer: http://www.hollaender.com/?page=flanges And here's a solar-specific link: http://solar.hollaender.com/ I'm looking forward to seeing if anyone else knows about off the shelf longer stanchions. Unirac used to make custom longer lengths of their steel standoff but no longer offer it. Best, August *August Goers* Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto: re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Jason Szumlanski *Sent:* Tuesday, September 10, 2013 1:27 PM *To:* RE-wrenches *Subject:* [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation Let me start be saying that I'm talking about mechanically attached tilt-mount solutions capable of handling 172 mph design wind speed, ASCE 7-10. Ballasted systems need not apply. We've used a variety of hardware for TPO membrane flat roofs, which is becoming more and more popular around here. We've found that hardware bases that mount on top of the membrane work well when there is a single slope in the array area and the rails can follow the contours of the roof surface. Ecofasten base plates spread the load out enough onto a DeskDeck roof board or similar, and have proven to be pretty versatile. However, when you have center drains or other situations with multiple slopes, it is advantageous to attach to the roof deck directly, typically plywood here, particularly in new construction. Tapered insulation, decking, and membrane can be cut around stand-offs and flashed nicely with 8 TPO boots. This keeps rails parallel to the trusses/ground, and disregards the roof membrane slope. The problem with this is that insulation can easily get to be 6 thick, even on a small residential flat roof, requiring a minimum 14 long stand-off to fit a standard TPO boot above the membrane. Long story short, what mounting systems are others using for this scenario, and who offers long stand-offs? J ason Szumlanski Fafco Solar ___ List
Re: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation
Schletter makes their 2 diameter aluminum stanchions in a variety of sizes, up to 12. We have done a number of jobs on the exact roof you are describing using the attached version of the Schletter Windsafe. Their stanchion has a pretty small base with 4 holes for attachment, like the UniRac, so we always lag them into structural framing or blocking. Ironridge also has a nice attached tilt up solution for a single module rows, but last time I checked the lead time on their 12 standoff was 6 weeks. When we need heights over 12 we have a local fab shop make them for us. Windsafe spec: http://www.schletter.us/support/Windsafe_Product_Sheet.pdf Stanchions on page 9: http://www.schletter.us/support/I43%20Component_OV.pdf Best Garrison Riegel Project Manager | http://www.solarserviceinc.com/ Solar Service Inc [p] 847-677-0950 | mailto:garri...@solarserviceinc.com garri...@solarserviceinc.com NABCEP Certified PV Installation ProfessionalT From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason Szumlanski Sent: Tuesday, September 10, 2013 4:03 PM To: RE-wrenches Subject: Re: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation I'm wondering if multiple 7 Unirac 2-piece Stand-Offs cylinders threaded together with all-thread would be a structurally sound solution. I'll pass that option by the engineers... Still hoping for an off-the-shelf solution... J ason On Tue, Sep 10, 2013 at 4:38 PM, August Goers aug...@luminalt.com wrote: Jason, It's funny that you bring this up because it is an issue that we constantly face on commercial new construction. Commercial roofers want 8 plus for their lead jacks plus the cricket often takes several inches above the deck. Many folks in the Bay Area are using Hollaender rail fittings with galvanized steel or aluminum pipe. The advantage is that you can cut the pipe as long as needed. The entire setup is very robust but a bit costly. Here's a link to various types of flanges they offer: http://www.hollaender.com/?page=flanges And here's a solar-specific link: http://solar.hollaender.com/ I'm looking forward to seeing if anyone else knows about off the shelf longer stanchions. Unirac used to make custom longer lengths of their steel standoff but no longer offer it. Best, August August Goers Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason Szumlanski Sent: Tuesday, September 10, 2013 1:27 PM To: RE-wrenches Subject: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation Let me start be saying that I'm talking about mechanically attached tilt-mount solutions capable of handling 172 mph design wind speed, ASCE 7-10. Ballasted systems need not apply. We've used a variety of hardware for TPO membrane flat roofs, which is becoming more and more popular around here. We've found that hardware bases that mount on top of the membrane work well when there is a single slope in the array area and the rails can follow the contours of the roof surface. Ecofasten base plates spread the load out enough onto a DeskDeck roof board or similar, and have proven to be pretty versatile. However, when you have center drains or other situations with multiple slopes, it is advantageous to attach to the roof deck directly, typically plywood here, particularly in new construction. Tapered insulation, decking, and membrane can be cut around stand-offs and flashed nicely with 8 TPO boots. This keeps rails parallel to the trusses/ground, and disregards the roof membrane slope. The problem with this is that insulation can easily get to be 6 thick, even on a small residential flat roof, requiring a minimum 14 long stand-off to fit a standard TPO boot above the membrane. Long story short, what mounting systems are others using for this scenario, and who offers long stand-offs? J ason Szumlanski Fafco Solar ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Sundanzer questions
I don't think allowing every crazy out there to post a review on everything is really forwarding civilization at all Kind regards Tom Duffy Systems Design Engineer [cid:133065820@02122011-32D5] t...@thesolar.bizmailto:t...@thesolar.biz USA Toll Free 888-503-6772 Bocas del Toro, Panama 6126-1253 Although no trees were killed in the sending of this message, a large number of electrons were terribly inconvenienced. Confidentiality Notice: This message including any attachments is for the sole use of the intended recipient and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender and delete any copies of this message. From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Allan Sindelar Sent: Wednesday, September 11, 2013 2:28 PM To: RE-wrenches Subject: [RE-wrenches] Sundanzer questions Wrenches. We have sold four Sundanzer chest refrigerators or freezers over the last ten years. All have worked without a hitch. Today I got a call from a customer asking about DC refrigerators; when I mentioned Sundanzer, she stopped me. She said the reviews on Amazon convinced her not to buy one. I checked the reviews; of nine (among all four chest models), I read five 5-star, one 4-star, one 3-star, and two 1-star. The 1- and 3-star reviews were about both failure of the units and lack of support from the manufacturer. So I'm curious: who has sold many of these? How have they performed? And what has been your experience with dealer support? Thanks, Allan -- Allan Sindelar al...@positiveenergysolar.commailto:al...@positiveenergysolar.com NABCEP Certified PV Installation Professional NABCEP Certified Technical Sales Professional New Mexico EE98J Journeyman Electrician Founder and Chief Technology Officer Positive Energy, Inc., a Certified B CorporationTM 3209 Richards Lane Santa Fe, New Mexico 87507 505 424-1112 office 780-2738 cell www.positiveenergysolar.comhttp://www.positiveenergysolar.com/ inline: image001.jpg___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] programmable relay board
Mac, Have you investigated the voltage controlled switch by Solar Converters? http://www.solarconverters.com/index.php/products/92-voltage-controlled-switch/126-vcs-1ah-or-vcs-1al Good luck, Bill Loesch Solar 1 - Saint Louis Solar 314 631 1094 On 11-Sep-13 7:44 AM, Mac Lewis wrote: Hello wrenches, I am swapping out a customer that had an SW 4024. We are going to replace it with a Magnum MS4024. He had been using Relays 9 10 on the SW to control input from a small hydro system, with each one controlling two different hydro turbines. He set this up himself and it seems to work well. I am looking for a suitable replacement programmable relay board that would offer similar or better functionality as Relays 9 10 on the SW. Any suggestions for robust programmable relay boards with good documentation? Thanks -- Mac Lewis * Yo solo sé que no sé nada. -Sócrates * ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org No virus found in this message. Checked by AVG - www.avg.com http://www.avg.com Version: 2013.0.3392 / Virus Database: 3222/6654 - Release Date: 09/10/13 - No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3392 / Virus Database: 3222/6655 - Release Date: 09/11/13___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
