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  1. Replies
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    Thanks to all of you who responded. Dave

    Thanks to all of you who responded.

    Dave
  2. Replies
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    Thanks to the 3 of you who responded so quickly....

    Thanks to the 3 of you who responded so quickly.

    Gib's Son: The ducts seem to be secure to the can. I would like to insulate and just add more insulation over the box if that won't introduce a...
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    Box at Start of Attic Flex Run

    We live in SW Ohio in a 5 year old ranch that wife and I moved to last Oct. Off and on through the cold weather last winter I noticed 2 bedrooms had cold air "falling" from the ceiling grates when...
  4. Replies
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    Genteq, following the dealer tightening of the...

    Genteq, following the dealer tightening of the blower/motor assembly, I sent you an e-mail on March 30th to the address you provided. If you have any other suggestions for what might be done next,...
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    Thank you, Genteq. I will get with the dealer...

    Thank you, Genteq. I will get with the dealer and see if the tightening (assuming something is loose) takes care of the thunder problem.

    As far as not needing to dismount the blower and...
  6. Replies
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    Well, I guess I agree that it makes sense that...

    Well, I guess I agree that it makes sense that the vibration would transmit to the base, but what is the message here? Is there something that can mitigate the base vibration so that the noise does...
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    Genteq, Unless you or someone else has...

    Genteq,

    Unless you or someone else has another suggestion, it appears the only avenue left for me to pursue to deal with the startup "thunder" is having the dealer check everything for...
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    Well, I'm not in a position to fund a redesign of...

    Well, I'm not in a position to fund a redesign of the ECM 2.3, but you bring up some interesting points, and I will presume you are confining your answer, above, to the area of my initial question...
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    The furnace does not touch the walls. The...

    The furnace does not touch the walls. The rumble/thunder sound, when I happen to be in the garage when it occurs, seems to come from the furance cabinet--and I can feel it vibrate--next to where the...
  10. Replies
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    The furnace is in the garage and transmitts the...

    The furnace is in the garage and transmitts the sound though the wall to the kitchen, dining room, and living room--all of which border the garage. When it really "acts up" we can easily hear it...
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    Beenthere, My return plenum goes straight...

    Beenthere,

    My return plenum goes straight above the furnace to the attic where the connected flex returns are spread out to various places in the attic, the shortest of which is more than 10 feet....
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    And has the solution to those noises been to...

    And has the solution to those noises been to tighten everything down as Genteq suggested? "The issues that we typically see with a noisy start is related to the mounting system. So the thing to...
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    You seem to be suggesting that Luxaire (and,...

    You seem to be suggesting that Luxaire (and, presumably) York, Coleman, etc. have an inadequately constructed mounting system that is the source of the problem that I (and, perhaps Jerryd_2008) are...
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    Thanks, Genteq So would it be too difficult,...

    Thanks, Genteq

    So would it be too difficult, expensive, etc. to install sensors so that the rocking did not have to occur and the motor could start in the right direction without the "commotion"...
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    Genteq, I don't know for sure just what motor...

    Genteq,

    I don't know for sure just what motor it is, but it is what came from the factory and is part of the original installation. The model number of the furnace is (Z)FL9C060B12DH11A per the...
  16. Replies
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    Genteq, I have a Luxaire modulating furnace...

    Genteq,

    I have a Luxaire modulating furnace installed in 2007 with, presumably, a GE ECM. One of the things I don't understand about these motors is the way they start up. It is common for mine...
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    OK, Thanks, Dave

    OK, Thanks,
    Dave
  18. Replies
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    Beenthere, would both first and second stages in...

    Beenthere, would both first and second stages in cooling be set the same, i.e., 4 CPH?
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    Beenthere, I am having some difficulty...

    Beenthere, I am having some difficulty convincing the dealer that increasing the CPH on the cooling to 4 would be OK (at least to try) and not cause problems. He is especially reluctant because of...
  20. Replies
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    Would the Honeywell work better because of being...

    Would the Honeywell work better because of being able to set the CPH? Is there another benefit to the Honeywell?

    The dealer had about a year ago switched out the Luxaire stat (which was required...
  21. Replies
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    Beenthere, my stat is a Luxaire model 4DP22U70124...

    Beenthere, my stat is a Luxaire model 4DP22U70124 which, as far as I can tell, does not have a provision for setting Cycles Per Hour. In Step 6 of the Installer/Configuration Menu, it is set for a...
  22. Replies
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    I found that by plugging the hole in the wall...

    I found that by plugging the hole in the wall behind the thermostat (where the wires come through) with rope caulk the thermostat immediately made the furnace not go into a high fire scenario--even...
  23. Replies
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    My mod is a 2007 vintage and is rated 95% AFUE. ...

    My mod is a 2007 vintage and is rated 95% AFUE. So my numbers would be a little different from what you posted, I presume.

    There are some noises at low CFM's but I've pretty well gotten used to...
  24. Replies
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    Well, I am getting mechanical noise. I described...

    Well, I am getting mechanical noise. I described it in Post 20 as roar, howl, whine, and whistle, but some of it is definitely just furnace noises. The intent of putting in the flex was to handle...
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    Unfortunately, I believe the supply plenum for...

    Unfortunately, I believe the supply plenum for this down flow furnace at 10x14 is smaller than the furnace opening. I can't tell from the installation manual what that opening is, but the coil...
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    Thanks, Beenthere. I had expressed concern to...

    Thanks, Beenthere. I had expressed concern to the dealer about the static in flex but got no assurance that it would not be a problem. If they enlarge the trunk to 10x16, I presume I would still...
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    Thanks, Tinner73 I understand there is quite a...

    Thanks, Tinner73

    I understand there is quite a bit of controvery over the use of flex in crawl spaces. Some comments I've read say only use 3 to 5 feet at the end of the branch; some say it is OK...
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    Benthere?, Dash?, others? What I am...

    Benthere?, Dash?, others?

    What I am particularly interested in is your response to the position by the dealer/distributor that the problem resolution lies in the replacement of the branch ducts...
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    Advanced Response, thanks for the reply. I...

    Advanced Response, thanks for the reply.

    I presume you are referring to the square with a diagonal line through it when you say they have an 8" going to the garage. When I saw that I initially...
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    Well, it has taken some time, but the dealer and...

    Well, it has taken some time, but the dealer and the distributor were here in December and took measurements. The distributor took the measurements and loaded them into his Wrightsoft program. Lots...
  31. Replies
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    I had similar problem with my Luxaire FL9C during...

    I had similar problem with my Luxaire FL9C during November and again in December last year. Dealer had called February 19th (this year) to say that a new tech bulletin had just been issued. Here is...
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    In summary, then, it sounds like what I need is a...

    In summary, then, it sounds like what I need is a flex duct connector at the outlet of the coil, larger supply plenum, larger trunk, and larger take-offs, (and maybe larger supply grilles), plus more...
  33. Replies
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    It appears there are no saved measurements for...

    It appears there are no saved measurements for the individual static readings (between the filter and furnace, and between the furnace and coil).

    beenthere indicated earlier that 6" supplies are...
  34. Replies
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    OK, beenthere. What is your view of the...

    OK, beenthere. What is your view of the following:

    1) The supply takeoff to the utility room, which is one of the 2 that come straight from the plenum, is between the garage and kitchen and has a...
  35. Replies
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    The bedroom doors are undercut. How much...

    The bedroom doors are undercut. How much undersized are the living room and dining room?
  36. Replies
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    I don't know the individual statics but will try...

    I don't know the individual statics but will try to find out.

    The supply returns are indiviually run to the plenum which is made of fiberglass board. This is a one story condo and there is a...
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    Thanks, again, beenthere. And what about the...

    Thanks, again, beenthere. And what about the diameter of the take-offs: is 6" OK for this situation?

    Maybe I didn't sufficiently digest your comment on the four 8" return air ducts. Even @ 900...
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    beenthere, And, I presume, that will mean the...

    beenthere,

    And, I presume, that will mean the furnace will have to be uninstalled, along with opening the AC lines, etc, in order to get to the current plenum and replace it?

    Since there will...
  39. Replies
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    Thanks, beenthere, I watched this spring when...

    Thanks, beenthere,

    I watched this spring when dealer was checking CFM on A/C, which is a 2 ton, 15 SEER, 2-stage Luxaire AL5B with a matching FC36B3XN1A coil. Second stage was at 800 CFM. So,...
  40. Replies
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    Still Working on Noise Issues

    Back in January this year I posted about performance issues with my 2007-installed Luxaire 60K downflow modulating furnace located in garage. Since then, another new inducer assembly has been...
  41. Thread: AC Adequate?

    by Dave66
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    Thanks Willserve and Green Jumper, I plan to...

    Thanks Willserve and Green Jumper,

    I plan to have the HVAC inspection done by a (hopefully) qualified tech who will also evauate the overall condition of the equipment. Now all I have to do is...
  42. Thread: AC Adequate?

    by Dave66
    Replies
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    597

    WildBill99 wrote: Lots of variables that have...

    WildBill99 wrote:

    Lots of variables that have nothing to do with capacity of the system.

    If the house was unoccupied the AC might have been off upto 1/2 hour before the open house.

    And I...
  43. Thread: AC Adequate?

    by Dave66
    Replies
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    597

    Udarrel wrote: I am not a fan of ducts in or...

    Udarrel wrote:

    I am not a fan of ducts in or under the slab.
    I've seen those ducts fill with water, also potential mold problems.
    Always have that situation checked for mold & moisture problems....
  44. Thread: AC Adequate?

    by Dave66
    Replies
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    597

    Thanks HVAC ears, I should have mentioned...

    Thanks HVAC ears,

    I should have mentioned that the house in question is a 2000 square foot ranch with awnings on the west facing windows. From your 600 square feet per ton rule of thumb, the AC...
  45. Thread: AC Adequate?

    by Dave66
    Replies
    9
    Views
    597

    AC Adequate?

    My wife and I toured a home for sale in the Dayton, OH area yesterday. It has all electric heating and cooling with a heat pump and electric backup (I think). It was sunny with a temperature about...
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    Late in the cooling season last year, the dealer...

    Late in the cooling season last year, the dealer apparently found the real problem: a factory wired bundle in the outside unit that had a wire not tighltly connected within the bundle. I did not...
  47. Replies
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    Freezeking2000 wrote: "...I have been...

    Freezeking2000 wrote:

    "...I have been installing Luxaire Mods all this winter and not even a call except to point out how much they love them..."

    I guess I should have had someone like...
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    Yorkguy, Replying to the following (I haven't...

    Yorkguy,

    Replying to the following (I haven't figured out how to put a box around the quoted passage):

    "Also, I've seen pieces of the blower wheel actully come apart which would further explain...
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    Beenthere, The vent (for intake air) goes...

    Beenthere,

    The vent (for intake air) goes straight up to the attic above the garage and terminates there (with 2 90 degree bends) about 18" above the insulation, so about 5 feet total above the...
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    Thanks, yorkguy. If you are referring to the...

    Thanks, yorkguy.

    If you are referring to the air distribution blower, I have seen the dealer check the alignment on the shaft about 3 times, now. The first time was before he installed the...
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