13 
 
 
1. Interconnecting Compressor Piping (ICP) from 1
st
 stage to 2
nd
 stage 
2. VFD cooling piping 
3. Condenser 
4. Condenser waterbox nozzles 
5. Economizer isolation valve (option) 
6. Economizer 
7. Evaporator waterbox nozzles 
8. Evaporator  
9. PIC5+ HMI touchscreen panel 
10. Suction elbow 
11. Evaporator sightglass 
12. Evaporator charging valve 
13. Evaporator pressure transducer 
14. 1
st
 stage Inlet Guide Vane (IGV) actuator 
15. Compressor  
16. Motor terminal box 
17. Power cables from VFD to compressor motor 
18. 2
nd
 stage Inlet Guide Vane (IGV) actuator 
19. Economizer pipe 
20. Condenser relief valve assy 
21. Evaporator relief valve assy