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  1. #1
    Join Date
    Aug 2011
    Location
    Victoria
    Posts
    24

    Default Smoke Detectors Inside HVAC Returns

    Is there an easy was to determine if this smoke detector is specifically listed for installation inside a return air chase?

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    Last edited by Al Roden; 08-20-2013 at 01:39 PM.
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  2. #2
    Join Date
    Mar 2007
    Location
    Columbus GA
    Posts
    3,746

    Default Re: Smoke Detectors Inside HVAC Returns

    Quote Originally Posted by Al Roden View Post
    Is there an easy was to determine if this smoke detector is specifically listed for installation inside a return air chase?
    That is not a smoke detector, it is a siren for an alarm system.
    Should not be in the ducts.
    I think this is the siren in the picture.
    http://intellahome.com/alarmpdfs/wave2.pdf

    Plastic smokes when burned.
    Even duct mounted smoke detectors are mounted outside the ducts and have a sampling tube going into the duct.

    Last edited by Rick Cantrell; 08-21-2013 at 12:34 AM.
    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  3. #3
    Join Date
    Mar 2012
    Location
    Lansdale, PA
    Posts
    876

    Default Re: Smoke Detectors Inside HVAC Returns

    Quote Originally Posted by Al Roden View Post
    Is there an easy was to determine if this smoke detector is specifically listed for installation inside a return air chase?
    It does appear to be a siren. I assume it is right next to a return-air grille. I see no harm in having it there, unless is interferes with the volume of the alarm, or the manufacturer does not permit it.


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