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    Bathroom fan code? (3 Posts)

  • ChrisJ ChrisJ @ 1:41 PM
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    Bathroom fan code?

    This feels like a dumb post but I like to do things the right way.  I'm installing a fan in our main bathroom as it doesn't have one.

    Are there any codes I should be aware of?  8x10 bathroom with a tub\shower and I'm planning on a 110CFM fan vented via 4" flexduct via a damper on the roof.  Fan will be controlled by a 3 switch control for light, fan, night light installed by the door and out of reach from the tub.
    Weil-McLain EG-45 connected to 392sqft of radiation via two 2" risers into a 3" drop header and 2" equalizer. Using Rectorseal Steamaster water treatment to greatly reduce corrosion in the boiler.

    Steam system pictures updated 6/5/14.
    https://picasaweb.google.com/thetube0a3/Boiler?authkey=Gv1sRgCImUxIqv9436MQ#
  • Bob Harper Bob Harper @ 11:51 PM
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    bathroom ventilation considerations

    Based upon the 2009 IRC:
    min. 50 cfm intermittent ventilation or 20 cfm continuous
    must discharge directly to outdoors--not attics, garages or crawlspaces
    flex duct flame spread 200 or less
    joints sealed with UL181 B-FX tape or 181 f-M mastic
    three screws equidistantly spaced at connection to flanges
    seal penetrations per energy code
    fireblocking per R302.11
    corrosion resistant screen, grilles, or louvers
    outlet protected from direct weather
    one wall switch controlled light-may be occupancy controlled

    HTH,
  • ChrisJ ChrisJ @ 3:50 AM
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    Thanks

    Thanks for the reply Bob I appreciate it.
    Weil-McLain EG-45 connected to 392sqft of radiation via two 2" risers into a 3" drop header and 2" equalizer. Using Rectorseal Steamaster water treatment to greatly reduce corrosion in the boiler.

    Steam system pictures updated 6/5/14.
    https://picasaweb.google.com/thetube0a3/Boiler?authkey=Gv1sRgCImUxIqv9436MQ#
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