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Thread: UV light hookup

  1. #1
    Join Date
    Aug 2003
    Posts
    49
    I need some advise on how to hookup a UV light to a furnace/air-handler in a way on which when the unit is not running deenrgize the light (summer or winter).
    Please be specific and with no or minimum cost to do so.
    Thanks

  2. #2
    Join Date
    Apr 2004
    Location
    Palmdale, CA
    Posts
    199
    None that I have ever seen. It is hooked up to a 120 Volt source. There is a constant 120 V going to your air handler so unless you install a switch next to your thermostat that you yourself turn on and off is the only way I can see this happening. Just my 2 cents.

  3. #3
    put "RIB" relay in the fan circuit - you should be able to handle from there.

  4. #4
    Join Date
    Jun 2004
    Location
    British Columbia, Canada
    Posts
    105
    If it is a newer furnace you will have an EAC terminal on the circuit board which is for an electronic air cleaner. This terminal is energized with the indoor blower.

  5. #5
    Join Date
    Aug 2005
    Location
    Navarre Florida
    Posts
    131

    uv light hook up

    You may also use a sail switch so when the blower syarts running the sail switch located in the return air is spring loaded air movement closes switch no air movement opens switch the work great

  6. #6

    Thumbs up

    the easy way would be to use a relay or use eac terminal on the control board.. that way you are sure it works all the time when the blower is on,, it would be easy to forget to turn on a switch every time..

  7. #7
    Join Date
    Feb 2004
    Posts
    2,597
    is this a supply or return mount? if a return do not use a sail switch in the return duct. it will probably only last a month.

    i'm guessing it is a return mount due to the fact you want it to only come on with the blower. if it is a supply mount then power continuously.(for coil irradiation.)

  8. #8
    Join Date
    Feb 2004
    Posts
    2,597
    also, if there is a media filter in the path of light, or any older plastic humidifiers/ coil pans, the uv will deteriorate these quickly.

    good luck

  9. #9
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,765
    if no eac connection use a pressure switch, sail switch would deteriorate.

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