On 6/13/2015 9:28 PM, Jeff Liebermann wrote:
On Sat, 13 Jun 2015 20:26:02 -0400, rickman wrote:

What spec would that be? Do brand new units work to this nebulous spec?

The performance specs are in UL 217.
http://ul.com/code-authorities/fire-code/smoke-alarms-and-smoke-detectors/
I couldn't find a current copy online. The best I can do is a 22 year
old copy. Obviously, things have changed but it's still interesting
reading. Section 38 starts the sensitivity testing section.
ftp://law.resource.org/pub/us/cfr/ibr/006/ul.217.1993.pdf

Installation requirements and testing are under NFPA 72.
http://www.nfpa.org/codes-and-standards/document-information-pages?mode=code&code=72&tab=questions
You should be able to read NPFA-72 for free.

If you can't test it, then why swap one untested unit for another
untested unit?

Dunno.

Exactly!

--

Rick