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Thread: How to twin furnaces

  1. #1
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    How to twin furnaces

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    Sent from my HTC VLE_U using Tapatalk 2

  2. #2
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    Scary!

  3. #3
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    How did this hack get a hold of trane equipment
    The only true knowledge is the pursuit of knowledge

  4. #4
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    Trane will sell to about anyone it seems. I see plenty of hacked in trane stuff.

  5. #5
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    Are those going into masonry chimney? Flues look rusted out.

  6. #6
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    Ive only seen a few twin systems. Is it only the return that is done wrong or am I missing something?

  7. #7
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    the thing looks like a complete disaster
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

  8. #8
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    160,000 btu w 3 ton of airflow? Wonder what esp was on THAT!

    Short cycling, hitting limit, and/or wet basement?

  9. #9
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    3 furnaces run a combined horizontal flue to a chimney. 3.5 ton drives, 100K furnaces 7.5 ton Trane A/C on some ancient coil above both furnaces. Return air comes in the right furnace. 1 small filter. The Tranes are so rusty from the A/C constantly freezing up. Little damp basement room where they store pool chemicals. The techs condemned a 24 year old Ruud 60% that sits to the left of the twins. Cracked, impressive it lasted that long.

  10. #10
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    Are you guys replacing all 3 and fixing everything or just replacing what is inoperable.

  11. #11
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    The energy bills will be your friend here if you need help. You should be able to save 50% even before looking at problems with the building enclosure.

  12. #12
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    Quote Originally Posted by jimmyed View Post
    Trane will sell to about anyone it seems. I see plenty of hacked in trane stuff.
    Around here they wont sell to you unless your a Trane authorized dealer, and they have been known to drop your dealer status if you get to many complaints. Maybe its different where you are.
    The only true knowledge is the pursuit of knowledge

  13. #13
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    At the moment, probably just changing the split open Ruud not in the picture. The Tranes are so rusty, won't be long for them. I think a lot is from coil leaks and freezeups. Both outdoor units are on old coils. The 20 year old Bryant A/C on the single furnace has the original early 70s evap. We'll see if we have any luck getting them to change the A/C. But it never causes any trouble.

  14. #14
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    Ugh, looks like the Tranes where I work. Ours still have their low volt transformers for each unit and a bunch of isolation relays mounted in random places with all the wires the same color. What a PITA when a twinning kit would have worked just fine.

  15. #15
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    The only way to stop a Trane in my parts is to buy it from Home Depot. Their installers are good for a real laugh, how about using lead free solder on a R-410a change out? I was there in the winter, there was so much dripped solder it fell into the furnace and shorted out the Honeywell ignition module. The guy used plumbing flux too, what a nasty mess. The owner called me this spring because the unit didn't seem to be dehumidifying just cooling.

    They kind of screwed up installing a 4 ton Trane where the original unit was a HS18-411 Lennox a 3 ton unit which was oversized for the duct size. The reason I did not get this installation was this long time customer called a plumbing company with the same name who told him they didn't do air conditioning anymore.
    I handed this back to Home Depot as it was under warranty, good luck getting that Trane out of the station.

    Well I know this unit is going to last only a few years, hopefully I get the change out, if not maybe the guy will end up with a 5 ton next time. We have idiots around these parts that put in 3 tons with 90k gas furnace no matter what size the house is. These guys have also standardized their duct sizes to 6 inch flex for all duct runs not matter if they run the duct 3 stories or five feet.

  16. #16
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    Quote Originally Posted by AtticAce View Post
    They kind of screwed up installing a 4 ton Trane where the original unit was a ... 3 ton unit which was oversized for the duct size.

    ...

    Well I know this unit is going to last only a few years, hopefully I get the change out, if not maybe the guy will end up with a 5 ton next time. We have idiots around these parts that put in 3 tons with 90k gas furnace no matter what size the house is. These guys have also standardized their duct sizes to 6 inch flex for all duct runs not matter if they run the duct 3 stories or five feet.
    Imagine a world where you could see everybody's energy use:

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    Imagine a world where people could see independent verification of energy savings by contractor. Where we could have MPG ratings for HOUSES:

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    Think good work would then have a "seeable" compelling, quantifiable argument? That the argument that a small incremental investment in "better" results in long term dividends? Isn't this what people want? Some tangible way to justify spending more on quality?

    Quality needs to become more tangible, more quantifiable.

  17. #17
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    counter

    Quote Originally Posted by 5thRoot View Post
    Around here they wont sell to you unless your a Trane authorized dealer, and they have been known to drop your dealer status if you get to many complaints. Maybe its different where you are.

    The light green doors makes it a counter product. if the doors were dark green they would be a dealer only product.

  18. #18
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    Quote Originally Posted by tedkidd View Post
    Imagine a world where you could see everybody's energy use:

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    Imagine a world where people could see independent verification of energy savings by contractor. Where we could have MPG ratings for HOUSES:

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    Think good work would then have a "seeable" compelling, quantifiable argument? That the argument that a small incremental investment in "better" results in long term dividends? Isn't this what people want? Some tangible way to justify spending more on quality?

    Quality needs to become more tangible, more quantifiable.
    Creepy...and about 3 blocks from my office

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