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Trane ac air handler
I have a Trane air handler TWH039P 150C1 from ‘92 that just handles AC and the fan continuously runs but the compressor will cycle off. If I hit the relay I can get it to turn off so I think it’s just the relay and not the timer board. Problem is I can’t find this relay and would greatly appreciate some advice on what a replacement would be. I’ve attached photos of the original relay.
Thank you!
brion182
Re: air handler needed
@zepfan check out Majic Aire. They can make most anything even if it is not off the shelf.
Re: Trane Air Handler Fan Constantly Running
Success!! Just wanted to thank you guys for the awesome help and advice. While at times frustrating, this whole experience was educational and rewarding.
After spraying the condenser with soap, I found a good sized leak at the bottom corner of the condenser. I removed the fins to better identify the leak and noticed a pinhole leak on the top of the microchannel tubing. After a few failed attempts of not getting the solder to adhere, I was finally able to get a good repair. It was a fine balance of getting the aluminum hot enough to melt the solder vs melting the aluminum away.
Pressure tested the system with nitrogen at 100 PSI and it held for 30 minutes without any loss in pressure.
I then removed the old liquid and suction filter driers. Replaced the suction line filter with copper tubing and placed a new larger liquid line filter drier. Once again pressure tested the system successfully.
Performed an oil blowout test and then pulled a vacuum. I was able to pull down to 240 microns which held for 10 minutes.
Filled the system up with 407c, this time it required a little over 8 pounds before getting appropriate superheat and subcooling numbers (though my system has a fixed orifice so superheat was the main priority).
System is back up and cooling! While it definitely is kicking the can down the road, at least I can hold off until supply chain and pricing issues stabilize. Thanks again!
Re: Air vent Requirement on Steam Main Line
The first picture looks to me like a feeder pump to return cond water to the boiler.
The second picture looks like a drop header with the drip F&T trap going into the feeder pump tank.
You may have a one pipe system and are the traps you refer to the ones at the tank?
I would call them end of main float & thermostat (F&T) traps going into the tank also.
JUGHNE
Re: Air vent Requirement on Steam Main Line
Yes, I have a one-pipe steam system and the traps are near the tanks only.
Air vent Requirement on Steam Main Line
Hello,
I am working on this building (one-pipe system) where I came across this piping arrangement located in the boiler room itself. So the steam header is branched into many main steam lines and one of the lines is shown in the pictures attached.
We can clearly see the steam pipe coming from the right side of one viewing the picture. it separates into two risers and then we can see the condensate lines pitching downwards towards the left. Do we need an air vent on this location? Because I was not able to see one.
Fyi, this building has steam drum in it's distribution system which has steam trap feeding to feedwater tank.
Thank you.
Regards,
Re: Unrecognized return vent
they have another thread with this system. that is what they have.
mattmia2
Re: Unrecognized return vent
If each radiators return is piped individually to a wet return then you need no traps. You should have an air vent large enough to vent the air from the supply run out through the radiator and the return line and the air vent should be located at the top of the riser where the return drops into the wet return
Re: Unrecognized return vent
early vents used a carbon rod that would expand in the steam, you might have some form of that.
mattmia2