Follow-up… When first introduced, there was no stipulated max fan width.
What happens at greater than 24 feet? R/ Matt Please rate our customer service<https://survey.medallia.com/?emailsignature&fc=3539&bg=Fire%20and%20Fabrication> Matthew J. Willis, CWBSP, CET Engineering Designer IV FERGUSON FIRE DESIGN, LLC A Wholly Owned Subsidiary of Ferguson Fire & Fabrication, LLC 401 N 5th Street Suite 448 Wausau, WI 54403 C: 307-236-8249 [email protected]<mailto:[email protected]> www.FergusonFire.com<http://www.fergusonfire.com/> From: Steve Leyton <[email protected]> Sent: Tuesday, March 7, 2023 2:42 PM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [Sprinklerforum] Re: HVLS Fans George Church is still missed. I have an FM fire test report regarding sprinkler activation around HVLS fans (somewhere, at least). Bottom line is that the fans create a vortex of moving and thus cooler air over and around the perimeter of the blade diameter; the report has thermographic images of the air temps during the burns. This cold air mass retards sprinkler activation times, which is why the prescriptive requirements are to symmetrically surround the fan with sprinklers in hopes of getting activations in the first, but if not then the second ring around the fan, should there be a fire working more or less under it. George prolly would have talked the customer out of putting up the fans… SL From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Sent: Tuesday, March 07, 2023 1:33 PM To: [email protected]<mailto:[email protected]> Subject: [Sprinklerforum] Re: HVLS Fans Good ole George! You may or may not remember a sprinkler tradition, Next month was pick on George month. We interjected his name for all examples. 😊 Thanks again for the look. R/ Matt Please rate our customer service<https://survey.medallia.com/?emailsignature&fc=3539&bg=Fire%20and%20Fabrication> Matthew J. Willis, CWBSP, CET Engineering Designer IV FERGUSON FIRE DESIGN, LLC A Wholly Owned Subsidiary of Ferguson Fire & Fabrication, LLC 401 N 5th Street Suite 448 Wausau, WI 54403 C: 307-236-8249 [email protected]<mailto:[email protected]> www.FergusonFire.com<http://www.fergusonfire.com/> From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Sent: Tuesday, March 7, 2023 2:18 PM To: [email protected]<mailto:[email protected]> Subject: [Sprinklerforum] Re: HVLS Fans Skyler, Interesting info there. That should be in the commentary in NFPA. Would be most helpful. Thanks, Jeff Normand Fergusen Fire Design From: Skyler Bilbo <[email protected]<mailto:[email protected]>> Sent: Tuesday, March 7, 2023 3:13 PM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]<mailto:[email protected]>> Subject: [Sprinklerforum] Re: HVLS Fans Matt, I barely remember one of the guys I looked up to talking about these fans early on in my career (George Church). The research is eye opening for the importance of the interlock. As far as I remember, the system failed every time (a boat load of heads were activated) when the fan did not shut down. This thread is a good reminder for all of us to insist that the interlock be installed. I see it missing more often than I find one installed out in the real world. It helps to tell the owner that the full scale fire tests showed the fire sprinkler system failed every time without it. They usually take it more seriously when they know there is a very real/serious reason you are telling them about this requirement. Literally as I wrote this, a fitter came in my office to ask about a big a** fan being added at a car dealership we're doing. These things are everywhere. Thanks, Skyler Bilbo [Image removed by sender.] 1700 S. Raney Street Effingham, IL 62401 217-819-6404 Direct 217-347-7315 Fax [email protected]<mailto:[email protected]> www.wenteplumbing.com<http://www.wenteplumbing.com> On Tue, Mar 7, 2023 at 2:45 PM <[email protected]<mailto:[email protected]>> wrote: Hummm. That’s a fair point. I viewed the center SSU as a “non-issue” as @ 36”, the fan/blades are not an obstruction per the book for an SSU. The research seems to deal mainly with the shutdown interlock. I was just curious as to location and impact, or lack thereof, as no numbers are given for the X/Y planes. The EOR’s note could be read a couple ways, so I will work them for a more compliant look. Thanks Skyler! R/ Matt Please rate our customer service<https://survey.medallia.com/?emailsignature&fc=3539&bg=Fire%20and%20Fabrication> Matthew J. Willis, CWBSP, CET Engineering Designer IV FERGUSON FIRE DESIGN, LLC A Wholly Owned Subsidiary of Ferguson Fire & Fabrication, LLC 401 N 5th Street Suite 448 Wausau, WI 54403 C: 307-236-8249 [email protected]<mailto:[email protected]> www.FergusonFire.com<http://www.fergusonfire.com/> From: Skyler Bilbo <[email protected]<mailto:[email protected]>> Sent: Tuesday, March 7, 2023 1:32 PM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]<mailto:[email protected]>> Subject: [Sprinklerforum] Re: HVLS Fans IMHO, you are not meeting the intent of the standard with the layout you described. The standard calls for centering the fan between four adjacent sprinklers. Similar to below. Your layout is approximately centered below a single sprinkler, not the 4 most adjacent. O O X O O Thanks, Skyler Bilbo [Image removed by sender.] 1700 S. Raney Street Effingham, IL 62401 217-819-6404 Direct 217-347-7315 Fax [email protected]<mailto:[email protected]> www.wenteplumbing.com<http://www.wenteplumbing.com> On Tue, Mar 7, 2023 at 1:42 PM <[email protected]<mailto:[email protected]>> wrote: Good afternoon. Regarding centered approximately between 4 adjacent sprinklers, there is no reference as to preferred distance other than the 36” above the blades. I have a light hazard layout that essentially places the fan between 8. You could count the 4 on the corners of the box as the 4. Or, the SSU’s between as 4 also. Distances are 12.17 +/- North to South and East to West of fan. Is closer preferred or more distant? It seems more distant as possibly less disruption. Would this layout then comply? R/ Matt O O O O X O O O O O = SSU X= HVLS fan with SSU more/less directly above Please rate our customer service<https://survey.medallia.com/?emailsignature&fc=3539&bg=Fire%20and%20Fabrication> Matthew J. Willis, CWBSP, CET Engineering Designer IV FERGUSON FIRE DESIGN, LLC A Wholly Owned Subsidiary of Ferguson Fire & Fabrication, LLC 401 N 5th Street Suite 448 Wausau, WI 54403 C: 307-236-8249 [email protected]<mailto:[email protected]> www.FergusonFire.com<http://www.fergusonfire.com/> _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org<https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org> To unsubscribe send an email to [email protected]<mailto:[email protected]> _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org<https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org> To unsubscribe send an email to [email protected]<mailto:[email protected]>
_________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org To unsubscribe send an email to [email protected]
