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  1. #1
    Join Date
    Jun 2006
    Posts
    6

    Unhappy

    We recently received a Carrier "CAPMP" muti-poise evaporator coil. The drain pan has two green wires running from the aluminium frame to the plastic drain pan. I assume it helps prevent static and keep dust from accumulating on the drain pan. Carrier literature only mentioned that the drain pan was made from some sort of polyester, they never mentioned the wires. Does anybody have any ideas about this?

  2. #2
    Join Date
    Aug 2004
    Location
    Los Angeles, CALIFA
    Posts
    1,132
    Is the unit installed yet?
    Do as I say, not as I do

  3. #3
    Join Date
    Jun 2006
    Posts
    6
    Not yet it's still here at the shop

  4. #4
    Join Date
    Aug 2004
    Location
    Los Angeles, CALIFA
    Posts
    1,132
    Do the wires have anything connected to them? Try Ohming them out to see if you gt any resistance. Could be a LAT Sensor.
    Do as I say, not as I do

  5. #5
    Join Date
    Jun 2006
    Posts
    6
    No, the wires have an eyelet on one end that is attached to the drain pan with a coarse-thread screw. The other end of the wires have a female connection that slips on a male adapter that's screwed to the aluminun frame of the coil. It simply looks like two jumpers.

  6. #6
    Join Date
    Nov 2005
    Location
    Northern VA
    Posts
    512
    It's not connected to any electronics at all? Sounds sort of like a condensate overflow sensor..

  7. #7
    Join Date
    Jun 2006
    Posts
    6
    No, nothing like that. No sensors involved. It reminds me of a dust collection system that is piped with PVC pipe. Sometimes a wire will be installed on the pipe someway to prevent the static build up due to the duct rubbing the interior of the pipe.

  8. #8

    Slow corrosion

    The connections are to slow down the corrosion of your AC parts through either cathodic protection or sacrificial anode (depending on forced current).

    What is the drain pan's material?

    [Edited by mjk_na on 06-23-2006 at 07:48 AM]

  9. #9
    Join Date
    Jun 2006
    Posts
    6
    The Carrier literature describes it as some sort of polyester. It's definately no kind of metal.

  10. #10
    Can you post the picture please?

  11. #11

    Hmm...

    If the pan is of non metal material - then the wires are most probably used for preventing static current buildup. However, what is the reason to do so? The pan will be damp (or wet anyway) - which will deter formation of static current.

    Hmm...

  12. #12
    Join Date
    Jun 2006
    Posts
    6
    Yeah, you would think so. I quess the upper part of the pan stays relativly dry. Sorry, no pictures...we've already installed it.

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