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  1. #14
    Join Date
    Jul 2006
    Posts
    47

    other side of coil

    Name:  115_1597.jpg
Views: 104
Size:  45.5 KBThis is a picture of the other side of the coil,no changes were made to it.That run just goes to 1st. floor living room.

  2. #15
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Quote Originally Posted by jdm2447 View Post
    Name:  115_1597.jpg
Views: 104
Size:  45.5 KBThis is a picture of the other side of the coil,no changes were made to it.That run just goes to 1st. floor living room.
    that's coming out o the plenum,the coil is a cased coil,painted the same as the furnace.

    BTW,those fittings equal over 200 equivalent feet of duct,very restrictive,it may turn out that your supply static is much greater than the return.

  3. #16
    Join Date
    Jan 2008
    Location
    Hells Kitchen, Phoenix Arizona
    Posts
    345
    its hard to see exactly whats going on but at first glance that looks like a really bad design...I'm sure there were space issues but it seems really restrictive...
    "If history repeats itself I am so getting a dinosaur"

  4. #17
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,801
    Post #5, pic #4, you'll see what I was refering to.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  5. #18
    Join Date
    Jul 2006
    Posts
    47
    Typical boot on top of supply,due to location of main beam and where supplies go through floor there were not alot of options for installer.The boot rolls 90 then into another 90 out of the top of the main trunk.Hard to get a good picture.Do I have to live with this or are there any options with less restrictive takeoffs?
    Attached Images Attached Images   

  6. #19
    Join Date
    Jul 2006
    Posts
    47
    ?

  7. #20
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Quote Originally Posted by jdm2447 View Post
    Typical boot on top of supply,due to location of main beam and where supplies go through floor there were not alot of options for installer.The boot rolls 90 then into another 90 out of the top of the main trunk.Hard to get a good picture.Do I have to live with this or are there any options with less restrictive takeoffs?
    Can't tell from the picture ,if they could be changed or not.

    However there are many things that can be done to reduce the static.Best to reduce it in the main plenum/trunkline as that effects all the duct system,changing a branch fitting will have more effect on just that branch,changing the static of the trunk effects the entire system.

  8. #21
    Join Date
    Jul 2006
    Posts
    47
    Dash , Are you talking about the short trunk with the take off in post #14 coming out of the plenum ,that only feeds 1 branch to 1 register?

  9. #22
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Quote Originally Posted by jdm2447 View Post
    Dash , Are you talking about the short trunk with the take off in post #14 coming out of the plenum ,that only feeds 1 branch to 1 register?
    Yes ,that but I think there are others as well.

    Here's a link to pics you posted before insulating the ducts.


    http://www.hvac-talk.com/vbb/showthr...=117964&page=2

  10. #23
    Join Date
    Jul 2006
    Posts
    47
    The only thing that was not changed was the plenum, top takeoffs and the short trunk at the right side of plenum.Everthing else is new including main trunk,return trunk,return drop and the 2 old pan bay returns that are now metal ducts.All duct work was sealed and insulated.Under my breeze way I had the 6" flex removed and replaced with metal 26ga.6" round sealed and insulated.

  11. #24
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Do they have a plan to reduce the static,after the changes??

  12. #25
    Join Date
    Jul 2006
    Posts
    47
    What should be changed and what are my options?

  13. #26
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    They should test the return static separately ,as well as the supply,this will help determine which to reduce ,or possibly both.

    Reducing the return is the usually the easist.

    Increase return drop drop size and possiblely the return trunks too.

    Turning vanes in the "fitting/box" attached to the filter will help also.

    Could add another return trunk,and return grill.

    Supply side is too difficult to see from here,as to what could be done.

    Testing the static in several places helps indentify where the large pressure drops are.

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