Trane PRGD series Installation, Operation And Maintenance Manual page 9

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Figure 2. Components of a Trane EarthWise purge system (front view)
1. Purge tank
2. Condensing unit (includes compressor, condenser coil, and fan)
3. Pressure-relief device (fusible plug)
4. Pump-out solenoid valve
5. Automatic expansion valve
6. Carbon tank
7. Carbon tank temperature sensor
8. Carbon tank heater
9. Exhaust solenoid valve
10. Pump-out compressor
11. Float switch
12. Compressor suction temperature sensor
13. Chiller refrigerant return line
14. Filter-drier canister
PRGD-SVX01F-EN 9