![Page 1: Pre Cool Trane Ga Sws Univ Install For Website](https://reader033.vdocument.in/reader033/viewer/2022051515/54d46b314a7959f9428b45b1/html5/thumbnails/1.jpg)
GA Southwestern State University
Pre-Cool System installation
![Page 2: Pre Cool Trane Ga Sws Univ Install For Website](https://reader033.vdocument.in/reader033/viewer/2022051515/54d46b314a7959f9428b45b1/html5/thumbnails/2.jpg)
SUMMARY
Address problems with a Carrier Air Cooled Chiller at Georgia Southwestern State University
Machine has had multiple compressor failures
Extremely high Liquid Line and condensor coil temperatures
Unable to meet setpoints for AC
![Page 3: Pre Cool Trane Ga Sws Univ Install For Website](https://reader033.vdocument.in/reader033/viewer/2022051515/54d46b314a7959f9428b45b1/html5/thumbnails/3.jpg)
EQUIPMENT
Carrier GT 100
![Page 4: Pre Cool Trane Ga Sws Univ Install For Website](https://reader033.vdocument.in/reader033/viewer/2022051515/54d46b314a7959f9428b45b1/html5/thumbnails/4.jpg)
ISSUES Three compressor replacements in 18 months Liquid line temps exceeding 130° Condensor temps over 100° Unable to run more than 3 of the 4 compressors due to
cutting off on high head pressures Recirculation of condensor exhaust through condensor
addressed with sheet metal flashing diverters (pic below)
![Page 5: Pre Cool Trane Ga Sws Univ Install For Website](https://reader033.vdocument.in/reader033/viewer/2022051515/54d46b314a7959f9428b45b1/html5/thumbnails/5.jpg)
Before Installation
![Page 6: Pre Cool Trane Ga Sws Univ Install For Website](https://reader033.vdocument.in/reader033/viewer/2022051515/54d46b314a7959f9428b45b1/html5/thumbnails/6.jpg)
After Installation
![Page 7: Pre Cool Trane Ga Sws Univ Install For Website](https://reader033.vdocument.in/reader033/viewer/2022051515/54d46b314a7959f9428b45b1/html5/thumbnails/7.jpg)
Controls and Water treatment
![Page 8: Pre Cool Trane Ga Sws Univ Install For Website](https://reader033.vdocument.in/reader033/viewer/2022051515/54d46b314a7959f9428b45b1/html5/thumbnails/8.jpg)
RESULTS DAY ONE
Drop of 10° in Supply Chilled Water temp. (From mid 50’s to mid 40’s)
Return Chilled water temps in mid 50’s Prior room temps between 77-80. After install temps
at 68-71. All four compressors running and cycling Drastic reduction in compressor noise due to reduced
head pressures
![Page 9: Pre Cool Trane Ga Sws Univ Install For Website](https://reader033.vdocument.in/reader033/viewer/2022051515/54d46b314a7959f9428b45b1/html5/thumbnails/9.jpg)
ADDITIONAL
Head temps and chilled water supply temps will be trended and monitored
Additional chillers at site will be selected for future installations
Follow-up with customer to address any post installation issues
![Page 10: Pre Cool Trane Ga Sws Univ Install For Website](https://reader033.vdocument.in/reader033/viewer/2022051515/54d46b314a7959f9428b45b1/html5/thumbnails/10.jpg)
CCONTACTONTACT I INFONFO