Trane air handlers leaking water
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Are these air handlers horizontal or vertical ? I know on some carrier units in vertical applications the pan can be pitched by removing two screws allowing the pan to be slightly pitched. If horizontal are the unit level or slightly pitched towards the drain. How is the air flow ? As other have stated in the past it may be a small layer of manufacturing oils on the coil not lettting the condensate adhere to the coil and drop off . Are these single or two stage units if 2 stage where the coils piped correctly 1 stage lower coil 2 Nd stage top I ve seen in the past where they where set up oppisite and had this issues more so w vertical units then horizontal set units but have seen it happen . Peace and good luck clammy
R.A. Calmbacher L.L.C. HVAC
NJ Master HVAC Lic.
Mahwah, NJ
Specializing in steam and hydronic heating0 -
Thanks for all the responses. The air handlers are all horizontal. Yes we have checked the traps both by eye and static pressure. They each go into their own condensate pump which you can see the water level in the pump rising fast while the unit is running, and also see water leaving the drain pan. It’s just that some of the condensate falls directly down off the coil. I have a video of the condition, but for some reason I can not upload to this post. Thanks to all0
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Brake clean?ChrisJ said:When they say clean the coil it means of oil left behind from manufacturing. Not really dirt from use.
I would try cleaning them really well.Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England1 -
I'd use foaming evaporator cleaner made for aluminum evaporators assuming that's what it is.Jamie Hall said:
Brake clean?ChrisJ said:When they say clean the coil it means of oil left behind from manufacturing. Not really dirt from use.
I would try cleaning them really well.
I suspect brake clean wouldn't smell very good indoors.Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.
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Thanks to all that responded. The 10 ton units are two stage with intertwined copper coils, first stage piped to the bottom. The 7.5 are single stage, one circuit0
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This is the one I used.ratio said:I use one of these, aerosol for a small job, pump sprayer for a larger job.
Seemed ok.....
https://www.nucalgon.com/products/coil-cleaners-sprayers/evaporator-cleaners/evap-foam-no-rinse/
Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.
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That one's closer to the door at Johnstone, so I end up with that one pretty often, too.0
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I had a problem last year with these ahu's doing this as well. They do make a drain pan " accessory " for this but we found that they would drain correctly if we increased the fan speed. Heck of a way to to balance a system ... increase airflow until water stops falling out of the unit.hvacfreak
Mechanical Enthusiast
Burnham MST 396 , 60 oz gauge , Tigerloop , Firomatic Check Valve , Mcdonnell Miller 67 lwco , Danfoss RA2k TRV'sEasyio FG20 Controller
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Thanks, I'll keep this in mind, as we install Tranes from time to time.hvacfreak2 said:I had a problem last year with these ahu's doing this as well. They do make a drain pan " accessory " for this but we found that they would drain correctly if we increased the fan speed. Heck of a way to to balance a system ... increase airflow until water stops falling out of the unit.
@zepfan, was an air balance done? Is the unit at design airflow, or under?
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Thanks again for all the responses. No a certified balance was not done, this is a replacement job, but we own a balance cone and I think I need to go back to the job with it.0
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Did you ever solve this issue? We had a Trane installed and have the exact same problem. We even had the coils replaced recently because cleaning them didn’t work, and it’s still dripping water. We hear it every time it happens and it’s driving us crazy. We are even getting irritated with the installer because nobody wants to take responsibility for this either faulty unit, or know how to actually fix this problem.0
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Can you post some pics showing the air handler and as much of the duct system as possible?0
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have a have any Static Pressure Readings been taken?
TESP will tell you where the duct issues are.0 -
Mix some diluted water and Borax into a pump up sprayer and wash down the impact side of the coil. Works every time as long as proper airflow, total external static and blower curves are observed.
43 years experience is the voice of reason!0 -
What's diluted water?
Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.
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Stop blaming the air handler. All air handlers which cool air will produce water in varying amounts (look under your car on a hot day if you have A/C). The trick is what is done with it. And that, as has been said, involves low enough face velocities to keep it from being entrained and, usually, a drip catcher and drain arrangement.eancelet said:Did you ever solve this issue? We had a Trane installed and have the exact same problem. We even had the coils replaced recently because cleaning them didn’t work, and it’s still dripping water. We hear it every time it happens and it’s driving us crazy. We are even getting irritated with the installer because nobody wants to take responsibility for this either faulty unit, or know how to actually fix this problem.
Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0 -
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Have you contacted Trane as to if there if a Baffle and or a deflector shield to divert the over spray into the lower drain pan? Be sure. sometimes they do NOT ship with the unit and it is not your fault. They can help or at least tell you is it is needed. MPT... Please let me know how you make out.zepfan said:We are having an issue with the Trane TWE (the odyssey model) air handler. 7.5 and 10 ton models. The issue is the water is falling directly down off of the evaporator coil, rather then following
the coil down and into the drain pan. I know this Normally means that the coil needs to be cleaned, but the units are less then 6 months old, and the coils are spotless they were installed over the winter and now that it is summer, they are leaking water. We installed six of these, and three are leaking. The drain lines are clear, and the traps are primed and deep enough. You can see water flowing through the condensate line. The unit is draining, it’s just that the water is falling off the coil. Any assistance would be much appreciated. Thanks to all.0 -
Thanks for everyone that responded to this. We ended up installing the factory made accessory drip kit for these air handlers and that resolved the issue. I don't know why they do not ship the unit with this already installed, but it has to be purchased separately0
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And it only takes 2 years to get it right!zepfan said:Thanks for everyone that responded to this. We ended up installing the factory made accessory drip kit for these air handlers and that resolved the issue. I don't know why they do not ship the unit with this already installed, but it has to be purchased separately
Edward Young Retired
After you make that expensive repair and you still have the same problem, What will you check next?
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No it did not take two years to get it right. We corrected the issue two years ago, and have installed the same kit on each of these air handlers since then, with no issues. When I saw someone had asked about this unit earlier this month, September 2022. I simply passed along how we resolved the issue, two years ago.1
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zepfan said:No it did not take two years to get it right. We corrected the issue two years ago, and have installed the same kit on each of these air handlers since then, with no issues. When I saw someone had asked about this unit earlier this month, September 2022. I simply passed along how we resolved the issue, two years ago.
Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.
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so I just had this same question yesterday. Perfectly good coil brand new system install. Customer kept complaining about a wet filter. I took a video of the water coming most of the way down the coil and then just falling off. I was stumped. I found this question on Google and cleaned the coil and it worked. Water went straight to the pan. This was a Trane Tem6 it happened on. Glad I found this site cuz I was going crazy0
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