If the head never actuates the glass won't fail? I am amazed that with all of the belt and suspenders stuff in NFPA and UL that it was "assumed" the head would operate in a timely manner. If the information in this thread is accurate it proves the WS works well as an open deluge nozzle, not necessarily as an "automatic" sprinkler. The articulate criteria for placement appears to be solely driven by the need to fully wet the entire surface of the glass.
Ron Fletcher Aero Automatic Sprinkler Phoenix, AZ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Steve Leyton Sent: Wednesday, October 01, 2008 10:08 AM To: sprinklerforum@firesprinkler.org Subject: RE: Window Sprinklers The obvious answer would be heat that directly threatens the glass; a sprinkler could react directly to heat on the same side or to heat radiated from the other side. If it's not hot enough at the window to operate the sprinkler, the presumption is that it's not hot enough to threaten the integrity of the glass, hence the requirement for tempered glass. Check the data sheet for dimensional criteria for placement - it's pretty articulate. Distances toward/away from the glass and deflector position from top of glazing are all clearly shown in elevation and plan views. Steve Leyton Protection Design & Consulting San Diego, CA -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Russell Sent: Wednesday, October 01, 2008 9:50 AM To: sprinklerforum@firesprinkler.org Subject: RE: Window Sprinklers Just a note about the mentioning of "sprinkler activation". The data sheet states that the advantages are its ability to wet the entire glass and the quick activation time. Well, that quick activation time is a mystery to me because the data states that there is no specific distance below the ceiling, just below the mullion. I put this question of ceiling to defector distance to the Tyco representive that phoned me yesterday and he had no info on what is the max. or min. distance. So, activation time due to heat build up from the ceiling down is not an issue. What's so different about the fusible element that makes its activation time so different from the standard glass bulb I wonder? Russell Rewis Brown Automatic Sprinklers, Inc. 107C Hemlock Street Valdosta, Georgia 31601 229-244-8130 [EMAIL PROTECTED] _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [EMAIL PROTECTED] To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) __________ Information from ESET NOD32 Antivirus, version of virus signature database 3486 (20081001) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 3486 (20081001) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [EMAIL PROTECTED] To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [EMAIL PROTECTED] To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
