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TRG-TRC010-EN iii
Contents
Introduction ........................................................... 1
period one Components .......................................................... 3
Compressor ............................................................ 4
Condenser .............................................................. 7
Expansion Device .................................................... 8
Economizer ............................................................. 9
Evaporator ............................................................ 11
Motor ................................................................... 12
Controls and Starter .............................................. 13
period two Refrigeration Cycle ............................................ 15
Refrigerants .......................................................... 19
Purge System ....................................................... 20
period three Compressor Capacity Control ........................ 22
period four Maintenance Considerations .......................... 30
period five Application Considerations ............................. 36
Condensing Temperature Control .......................... 37
Constant or Variable Evaporator Water Flow .......... 39
Short Evaporator-Water Loops ............................... 40
Heat Recovery ...................................................... 42
Free Cooling .......................................................... 44
Equipment Certification Standards ......................... 46
period six Review ................................................................... 48
Quiz ......................................................................... 52
Answers ................................................................ 54
Glossary ................................................................ 55
trgtrc010_book.book Page iii Wednesday, September 1, 1999 10:39 AM