Ul 217

[chris kennedy]

Anyone got a link to UL 217?

Thanks

 

[jumper]

This is all I got:

http://ulstandardsinfonet.ul.com/scopes/scopes.asp?fn=0217.html

http://forums.mikeholt.com/showthread.php/121598-UL-Whitebook

How did you get caught up in resi smokes?

 

[chris kennedy]

How did you get caught up in resi smokes?

Thanks Derek, I'm in because I'm the company code guy. Got a call yesterday that the city of Boca Raton AHJ is telling our resi guy that smokes need to be 120V powered. This is a McMansion, way too many devices to be interconnected at 120V, SOP for these to be connected to and powered by the alarm systems in other jurisdictions in which he has worked. I sent the shop an E-mail quoting NFPA 101 9.6.2.10.2 (thanks Ken), IRC 314.4 (thanks Chris), and FBC 907.2.10.2. Building dept responded with R313 and NFPA 72. None of the codes specify a voltage requirement. R313 references the UL 217, the last missing link to educate said BD.

 

[jumper]

You must be good, at the moment I cannot even find a 240v resi smoke in the US.

What is the make or model, do you know?

 

[chris kennedy]

You must be good, at the moment I cannot even find a 240v resi smoke in the US.

What is the make or model, do you know?

I'm talking about 12 or 24V smokes powered by the alarm system. I'm pouring over the White Book now and can only find requirements for smokes in hazardous locations. Getting a shower and cooking, need to walk away from this for a few.

 

[norcal]

Isn't the resi smokes requirements a building code issue?

 

[renosteinke]

The building code requires the alarms be hard-wired, have back-up power, and that all the horns sound if one sensor detects fire. It does NOT require they be all on one circuit, or even that they be 'smoke alarms' at all.

So, first off, you can install a proper central-panel fire alarm system, rather than the usual 'smokes.' That's one alternative.

The inspector has a point; manufacturers' instructions give an amp load, and limit the quantity of detectors on any one circuit. However, that yellow 'communication' wire is quite capable of being used to tie together alarms on different circuits. (I'd double check with the manufacturer to make sure; I think some also want you to have an 'interconnection module')