<div dir="auto">Most modern heat detectors are both rate of rise and fixed temp, so just avoid particle (smoke). (In US, no option in return air other than particle. Am working on a code change to fix that.) I've not formed a strong opinion on the beam detectors. Had one that shot across a catwalk. Move past that point fast and no problem, but stop a second and alarm activates. Another project helium balloons in house set it off. But maybe with thought on placement they'd be OK. </div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Mar 7, 2022, 7:29 PM Riter, Andrew via Stagecraft <<a href="mailto:stagecraft@theatrical.net">stagecraft@theatrical.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal">The university has said our entire fire alarm system needs to be upgraded.<u></u><u></u></p>
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<p class="MsoNormal">When designed in the late 90s (opened in 1997), the designers put heat detectors in the venues, but missed the “shared” areas that look like separate rooms on the drawings but actually share the same air (they put smoke detectors in the
pit, Front of House Cove, venue light locks, and air return system).<u></u><u></u></p>
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<p class="MsoNormal">I’d love to take this opportunity to replace a bunch of the smoke detectors with Heat detectors, but I believe there is a difference between Rate of Rise detectors and “set off at x degree level of heat” detectors.<u></u><u></u></p>
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<p class="MsoNormal">Can anyone give me a quick primer on these types of heat detectors, and advantages / disadvantages of each?<u></u><u></u></p>
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<p class="MsoNormal">Thanks everyone.<u></u><u></u></p>
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<b><span style="font-family:"Arial",sans-serif">Andrew M. Riter</span></b><span style="font-size:9.0pt;font-family:"Times New Roman",serif"> <br>
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Assistant Technical Director, Head Lighting Technician</span><span style="font-size:9.0pt;font-family:"Times New Roman",serif"><br>
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Chan Centre for the Performing Arts</span><span style="font-size:9.0pt;font-family:"Times New Roman",serif"><br>
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">The University of British Columbia | Vancouver Campus</span><span style="font-size:9.0pt;font-family:"Times New Roman",serif"><br>
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">6265 Crescent Road | Vancouver BC | V6T 1Z1 Canada</span><span style="font-size:9.0pt;font-family:"Times New Roman",serif"><br>
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Phone 604 822 2372</span><span style="font-size:9.0pt;font-family:"Times New Roman",serif"><br>
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif"><a href="mailto:andrew.riter@ubc.ca" target="_blank" rel="noreferrer"><span style="color:windowtext">andrew.riter@ubc.ca</span></a></span><span style="font-size:9.0pt;font-family:"Times New Roman",serif"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Times New Roman",serif"><img border="0" width="300" height="50" style="width:3.125in;height:.5208in" id="m_4870267647697723491Picture_x0020_1" src="cid:image001.png@01D8323E.28443730" alt="UBC E-mail Signature"><u></u><u></u></span></p>
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