Building Code and Building Construction - Questions and Answers
Or when you want to know how construction is supposed to be done.

|
AskCodeMan.com
|
The following Codemen are available to answer your questions:
All Codes and Standards - Jerry Peck, Codeman


Q&A Board links
  • REGISTER

  • FAQ

  • LOGIN

  • Q&A BOARD INDEX

  • View New Questions

  • View Unanswered Questions

  • View Active Questions/Answers

  • Mark Questions as read

  • View Your Questions

  • Go To Your User Control Panel




  • Links to:
  • Construction Litigation Consultants


  • Florida Building Commission

  • Florida Building Codes Online


  • International Code Council

  • ICC Codes Free Online


  • Building Officials and Administrators of Florida




  • Product Approvals
  • Florida Product Approval

  • ICC Evaluation Reports Search

  • Miami-Dade NOA Search




  • Inspector and Contractor License Search
  • Search Florida Licenses




  • Technical links
  • Technical Information page


























































  • Contact Codeman



  • Custom Search

    Smoke detector and HVAC return

    Smoke detector and HVAC return

    New postby chris mc on Wed Jan 26, 2011 11:10 pm

    Codeman,
    I was told today by a HVAC contractor that a smoke detector must be 36" from the return (both are on the ceiling and 20" apart). This is the first time I have ever heard of this and I can't find anything in the code book to confirm this.

    So two questions, is this a code violation (2006 IRC) and what would be the issue with this set up?
    chris mc
     
    Posts: 22
    Joined: Mon Mar 22, 2010 10:36 pm

    Re: Smoke detector and HVAC return

    New postby Jerry Peck - Codeman on Wed Jan 26, 2011 11:30 pm

    Hi Chris,

    That is found in the installation instructions for the smoke detectors. The smoke detectors need to be at least 3 feet from an air disturbing source, which would include returns, supplies, and the ends of the blades of ceiling fans. Note that "air disturbing source" is the term I use to describe sources which disturb the air and which the smoke detectors need to be away from, I have forgotten the precise wording in the installation instructions as the various installation instructions used slightly different wording - I just found that "air disturbing source" was descriptive and readily understood as to why it should not be close to the item disturbing the air, you want the smoke to get to the detector, not be sucked or blown away from the detector.

    I have seen some smoke detectors in years past which said 5 feet from the air disturbing source, but recently it seems that 3 feet is the new standard clearance.
    Jerry Peck - CodeMan
    AskCodeMan.com

    Construction and Litigation Consultant
    Construction Litigation Consultants, LLC.
    ConstructionLitigationConsultants.com
    User avatar
    Jerry Peck - Codeman
    Site Admin
     
    Posts: 1103
    Joined: Fri Dec 12, 2008 12:06 pm


    Return to Mechanical: Heating and cooling equipment, duct work, ventilation and exhaust fans



    Who is online

    Users browsing this forum: No registered users and 1 guest



    www.AskCodeMan.com
    cron