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  1. #1
    Join Date
    Aug 2006
    Location
    Vancouver , Canada
    Posts
    300

    UV Lights and Acoustic insulation

    Greetings:

    I posted a similar query over a year ago regarding UV Lights and Heresite coating on cooling coils ( the answer, by the way, was the UV light could break down the Heresite and degrade it ).

    So another question - while you must use a baffle if the UV lamp is in line of sight with a ' non - UV rated ' air filter, can anyone answer whether or not you can use a UV lamp in a plenum lined with acoustic insulation. This particular insulation is the traditional one inch of yellow fibreglass insulation with the black ' tar ' like coating on the air side.

    Please advise if you have any info - the installation instructions do not spell it out, and I don't have a return air plenum - there are grilles in the front of the A/C with filters directly behind the grilles.

    Thanks;

    Freonguy
    Superheat and subcooling tell it all !

  2. #2
    Join Date
    May 2005
    Location
    Lubbock Texas
    Posts
    773
    With direct line of sight from the lamp with in 24 inches it will break the glue down that holds the glue together. You are probable looking at 5 plus years before you see any damage. I have had some lights shining on some duct board for about 3.5 years in our shop as an experiment. Currently there is just discolouration so far.

  3. #3
    Join Date
    Aug 2006
    Location
    Vancouver , Canada
    Posts
    300

    UV light response

    Genesis:

    Thanks for that - since I am an ' in house ' HVAC guy - ( pulp and paper mill ), I will do my own experiment for a year or so and see if there are any improvements in IAQ.

    Thanks;

    Freonguy
    Superheat and subcooling tell it all !

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