Thank you Roland for your response and some background on the topic. Zach
On Wed, May 31, 2017 at 10:37 AM, Roland Huggins <[email protected] > wrote: > Both. WE submitted this after trying to convince an AHJ that with a heat > pump (aka low temp air), there was no need for separation. It was > initiated by the discharge diffuser but the duct itself will not be > radiating a higher temperature so the allowance applies overall. > > Apply the NFPA caveat required for committee members when writing their > own opinions, not a formal interpretation of the NFPA or any of its > technical committees. > > Roland > > > Roland Huggins, PE - Senior VP Engineering > > American Fire Sprinkler Assn. > > Dallas, TX > > http://www.firesprinkler.org > > > Fire Sprinklers Saves Lives > > > > > On May 31, 2017, at 5:27 AM, Zachary Siegrist <[email protected]> > wrote: > > I have a job where the heads ( ordinary temp) are less than 1 ft 0 in from > the edge of a downward discharge diffuser throughout the space. The > contractor has supplied me letter from the HVAC company stating that the > air discharged out of the diffusers are less than 100F and therefore the > heads do not need to be switched out or relocated to meet the specified > distances in Table 8.3.2.5(a). I believe he is trying to use Item 9 > under 8.3.2.5 stating “*ordinary temperature sprinklers located adjacent > to a heating duct that discharges air that is less than 100F are not > required to be separated in accordance with Table 8.3.2.5(a)*.” > > > My question is this: a diffuser is listed under the heating duct > category in the ‘type of heat condition’ column in Table 8.3.2.5 (a). > Are diffusers viewed differently than the ductwork itself? Any thoughts > as to if the previously referenced section applies to sprinklers located > adjacent to diffusers or just sprinklers located adjacent to heating > ducts? Typically heads are just switched out to intermediate temperature > sprinklers but this is the first time someone has taken this approach. > > Zach > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > org > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > org > >
_______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
